Evaporation experiment device

Abstract

The utility model discloses an evaporation experiment device which comprises an evaporation tank body, the bottom of the evaporation tank body is fixedly connected with supporting legs, an inner cavity of the evaporation tank body is provided with a plurality of electric heating pipes, the bottom of each electric heating pipe is fixed on a horizontal bearing plate, and the center of the bottom of the horizontal bearing plate is fixedly connected with a supporting rod. The lower end of the supporting rod penetrates through the center of the bottom wall of the evaporation tank and is fixedly connected with a lifting driving plate; a screw rod is screwed in a screw hole in the lifting driving plate, and the lower end of the screw rod penetrates through a through hole in the supporting bottom plate, is axially fixed and can rotate; the periphery of the supporting bottom plate is fixedly connected to the supporting legs, a worm gear is fixed to the lower end of the screw and meshed with a worm, the worm is fixedly installed at the output end of a gear motor, and the gear motor is fixed to the lower portion of the supporting bottom plate; a guide rod is fixedly connected between the supporting bottom plate and the bottom wall of the evaporation tank body and penetrates through a guide hole of the lifting driving plate. The height of the heating unit can be adjusted according to the height of the liquid level, and the heating effect and the safety of equipment are improved.

Description

Technical Field

[0001] The utility model relates to an experimental device, in particular to an evaporation experimental device, belonging to the technical field of evaporators. Background Art

[0002] The evaporator is a crucial component in a refrigeration system. Low-temperature condensed liquid passes through the evaporator, exchanging heat with the outside air, absorbing heat through vaporization and achieving the cooling effect. The evaporator primarily consists of two parts: a heating chamber and an evaporation chamber. The heating chamber provides the liquid with the heat needed for evaporation, causing it to boil and vaporize; the evaporation chamber completely separates the gas and liquid phases.

[0003] Chinese patent publication number CN 214714398U discloses an energy-saving evaporator comprising an evaporation tank body, a rotating shaft rotatably connected to the evaporation tank body, a fixed frame built into the evaporation tank body and fixedly connected to the rotating shaft, an electric heating rod disposed on the fixed frame, and a driving member for driving the rotating shaft to rotate about its own axis. The evaporation tank body is connected to an exhaust pipe, a liquid inlet pipe, and a liquid discharge pipe. The driving member drives the rotating shaft to rotate about its own axis, thereby driving the fixed frame to rotate, and further driving the electric heating rod to rotate, thereby heating different positions of the evaporation tank body.

[0004] However, this technical solution and the existing technology have the following defects: 1. Since the evaporator uses a driving part and a fixing frame to drive the electric heating rod to rotate, this structure may cause the wires connected to the electric heating rod to entangle and break during actual use, so it is not suitable for actual application scenarios.

[0005] 2. The electric heating rod inside the evaporator is fixed in height. As the liquid is continuously heated and evaporated, the liquid inside the evaporation tank will gradually drop. However, the electric heating rod with a fixed height cannot heat the liquid at a low position inside the evaporation tank well, resulting in poor heating effect. In addition, the electric heating rod is easy to burn out.

[0006] 3. The outer surface of the evaporator is not provided with a corresponding insulation structure, which causes the heat inside the evaporator to be lost very quickly. At this time, the electric heating rod needs to work continuously to maintain the required heat inside the evaporator. The energy saving performance needs to be improved. Utility Model Content

[0007] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and utility model title of this application, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0008] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0009] The purpose of the utility model is to overcome the problems existing in the prior art and provide an evaporation experimental device, in which the height of the heating unit can be adjusted according to the height of the liquid level, thereby improving the heating effect and the safety of the equipment.

[0010] In order to solve the above technical problems, the utility model provides an evaporation experimental device, including an evaporation tank body, the upper port of the evaporation tank body is covered with a tank cover, the top center of the tank cover is provided with an exhaust pipe, the upper part of the side wall of the evaporation tank body is provided with a liquid inlet and a liquid inlet valve is installed, the lower part of the side wall of the evaporation tank body is provided with a discharge port and a discharge valve is installed, the bottom of the evaporation tank body is fixedly connected to a support leg, the inner cavity of the evaporation tank body is provided with a plurality of electric heating tubes, the bottom of each electric heating tube is fixed to a horizontal support plate, the bottom center of the horizontal support plate is fixedly connected to a support rod extending downward, the lower end of the support rod extends from the bottom wall of the evaporation tank body The center passes through and the lower end is fixedly connected to a lifting drive plate; the lifting drive plate is provided with a screw hole and a guide hole, a screw is screwed in the screw hole, the lower end of the screw passes through the through hole of the support base plate, is axially fixed and can rotate; the outer periphery of the support base plate is fixedly connected to the support leg, and the lower end of the screw is fixed with a worm gear, the worm gear is meshed with the worm, and the worm is fixedly installed at the output end of the reduction motor, and the reduction motor is fixed under the support base plate; a vertically extending guide rod is fixed between the support base plate and the bottom wall of the evaporation tank body, and the guide rod passes through the guide hole of the lifting drive plate.

[0011] As an improvement of the present invention, the lower polished rod end of the screw is fixedly connected to a limiting ring, which is embedded in a countersunk hole on the lower end surface of the bottom wall of the evaporator body. A limiting cover for axially limiting the limiting ring is provided below the limiting ring. The limiting cover is in a circular shape, and the outer periphery is fixed to the lower end surface of the bottom wall of the evaporator body by screws. The lower polished rod section of the screw passes through the center hole of the limiting cover.

[0012] As a further improvement of the present invention, a through wire hole is provided along the center line of the support rod, and a wire through cavity is opened inside the horizontal support plate. Each wire through cavity extends radially along the horizontal support plate, and one end of each wire through cavity is communicated with the bottom center of the electric heating tube, and the other end of each wire through cavity is communicated with the upper port of the wire through hole. The power cord of each electric heating tube passes through the wire through cavity and then passes through the wire through hole.

[0013] As a further improvement of the present invention, a sealing ring is embedded in the bottom of the flange of the electric heating tube and pressed against the upper end surface of the horizontal supporting plate.

[0014] As a further improvement of the present invention, an observation window is provided on the upper portion of the side wall of the evaporation tank body.

[0015] As a further improvement of the present invention, a sealing ring is embedded in the central hole of the bottom wall of the evaporation tank body to achieve sealing with the outer periphery of the support rod.

[0016] Compared with the prior art, the present invention has achieved the following beneficial effects: 1. In actual use, the power cords will not be entangled with each other. By controlling the reduction motor to rotate forward, the reduction motor can drive the screw to rotate forward through the worm and worm gear, and the screw will drive the horizontal support plate to descend through the lifting drive plate and the support rod, thereby causing the horizontal support plate to drive multiple electric heating tubes to descend together, so that the staff can adjust the use height of the electric heating tube to the required height according to the gradually decreasing liquid level, thereby improving the heating effect of the electric heating tube and avoiding burning;

[0017] 2. By providing the first thermal insulation layer and the first heat insulation layer, the annular side of the evaporation tank body is better insulated and heat-insulated, while the third thermal insulation layer and the third heat insulation layer are provided to improve the thermal insulation and heat-insulating properties of the bottom of the evaporation tank body. At the same time, the second thermal insulation layer and the second heat insulation layer are provided to improve the thermal insulation and heat-insulating properties of the tank cover. This not only prevents the heat inside the evaporation tank body from being lost to the outside quickly, but also reduces the continuous working time of the electric heating tube, making the electric heating tube more energy-saving and power-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. The drawings are only provided for reference and explanation, and are not intended to limit the present invention. Among them:

[0019] Figure 1 This is a schematic diagram of the main structure of the evaporation experimental device of the utility model;

[0020] Figure 2 This is a three-dimensional diagram of the heating component and the heat-insulating component after being covered in the present invention;

[0021] Figure 3 This is a cross-sectional view of the evaporation experimental device in the present utility model;

[0022] Figure 4 This is a structural diagram of the heating component in the present utility model;

[0023] Figure 5 for Figure 3 A magnified view of middle A;

[0024] Figure 6 for Figure 3 Magnified view of B.

[0025] In the figure: 1, evaporation tank; 11, observation window; 12, discharge valve; 13, liquid inlet valve;

[0026] 2. Tank cover; 3. Exhaust pipe; 4. Support legs; 5. Support base; 51. Limit cover;

[0027] 61. Guide rod; 62. Screw; 621. Limiting ring; 63. Reducer motor; 64. Support rod; 641. Threading hole; 65. Horizontal support plate; 651. Threading cavity; 66. Electric heating tube; 661. Sealing ring; 67. Lifting drive plate; 68. Worm; 69. Worm gear; 610. Sealing retaining ring; 611. Annular sealing cover;

[0028] 71. First thermal insulation layer; 72. First thermal insulation layer; 73. Second thermal insulation layer; 74. Second thermal insulation layer; 75. Third thermal insulation layer; 76. Third thermal insulation layer. DETAILED DESCRIPTION

[0029] In the following description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device must have a specific direction.

[0030] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific figures. Obviously, the embodiments described are only a part of the present invention, not all of the embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Example

[0032] like Figures 1 to 6As shown, the evaporation experimental device of the present invention includes an evaporation tank body 1, a tank cover 2, an exhaust pipe 3, support legs 4, and a support base 5. The upper end of the evaporation tank body 1 is mounted with the tank cover 2, which is a separately removable structure and can seal the upper end of the evaporation tank body 1. The exhaust pipe 3 is connected to the top center of the tank cover 2. The exhaust pipe 3 is connected to an external shell-and-tube heat exchanger and can guide the secondary steam evaporated from the evaporation tank body 1 into the external shell-and-tube heat exchanger for cooling. The bottom of the evaporation tank body 1 is fixedly connected to the support legs 4. The bottom of the support legs 4 is fixed to a designated position on the ground by external expansion bolts. The support legs 4 can support and fix the evaporation tank body 1. The support base 5 is fixedly connected between each support leg 4. The support base 5 can support the guide rod 61 and the reduction motor 63. The upper side wall of the evaporation tank body 1 is provided with an observation window 11, which allows staff to observe the internal conditions of the evaporation tank body 1 in real time.

[0033] A liquid inlet is provided on the upper portion of one side of the evaporation tank 1, and a liquid inlet valve 13 is installed. The inlet of the liquid inlet valve 13 is connected to the outlet of the external liquid material storage tank via a pipe. When the liquid inlet valve 13 is opened, it facilitates the entry of the liquid material to be evaporated into the interior of the evaporation tank 1. A discharge outlet is provided on the lower portion of the other side of the evaporation tank 1, and a discharge valve 12 is installed. The outlet of the discharge valve 12 is connected to the inlet of the external waste material treatment tank via a pipe. When the discharge valve 12 is opened, it facilitates the outflow of liquid material remaining at the bottom of the evaporation tank 1. A heating assembly is provided inside the evaporation tank 1 for heating and evaporating the liquid material inside the evaporation tank 1. Insulation assemblies are provided on the outer surfaces of the evaporation tank 1 and the tank cover 2. These insulation assemblies are used to improve the thermal insulation capacity of the evaporation tank 1 and the tank cover 2, preventing the rapid loss of heat from the evaporation tank 1.

[0034] The heating assembly includes a support rod 64, a horizontal support plate 65 and an electric heating tube 66. The support rod 64 extends along the axis of the evaporation tank body 1. A horizontal support plate 65 is provided on the top of the support rod 64 and is connected to the center of the horizontal support plate 65 by welding to support the horizontal support plate 65. The lower end of the support rod 64 passes through the center of the bottom wall of the evaporation tank body 1 and is sealed with each other.

[0035] A plurality of electric heating tubes 66 are installed on the upper end surface of the horizontal support plate 65 . Each electric heating tube 66 extends vertically upward. The horizontal support plate 65 supports the bottom of each electric heating tube 66 . The bottom flange of each electric heating tube 66 is fixed on the horizontal support plate 65 .

[0036] Each electric heating tube 66 is connected to an external temperature controller via a wire. When working, the multiple electric heating tubes 66 can heat the liquid material inside the evaporation tank body 1 to evaporate it.

[0037] The lifting drive plate 67 is located below the bottom wall of the evaporation tank body 1. The lower end of the support rod 64 is connected to the lifting drive plate 67 by welding. The lifting drive plate 67 is used to drive the support rod 64 to move up and down, thereby driving each electric heating tube 66 to move downward as the liquid level decreases.

[0038] The lift drive plate 67 is provided with a screw hole into which a downwardly extending screw rod 62 is screwed. The lift drive plate 67 is raised and lowered by the screw rod 62. A vertically extending guide rod 61 is connected between the bottom wall of the evaporator body 1 and the support base plate 5. The guide rod 61 is welded to the bottom wall of the evaporator body 1 and the support base plate 5. A guide hole is provided in the lift drive plate 67 for the guide rod 61 to pass through. The guide rod 61 guides the lift drive plate 67 and prevents it from swinging or deviating during use.

[0039] A reduction motor 63 is mounted below the support base plate 5. This motor is connected to an external controller via a control line. A worm 68 is mounted on the output end of the reduction motor 63. This worm 68 meshes with a worm gear 69, which is fixed to the lower end of the screw 62. The lower, polished end of the screw 62 is fixedly connected to a limit ring 621, which is rotatably inserted into a countersunk hole in the lower end surface of the bottom wall of the evaporator. Below the limit ring 621 is a limit cap 51, which limits the axial position of the screw 62. The limit cap 51 is annular, with its outer periphery fixed to the lower end surface of the bottom wall of the evaporator 1 by screws. The lower, polished end of the screw 62 extends through the center hole of the limit cap 51. The limit ring 621 and the limit cap 51 prevent the screw 62 from axial displacement or shaking during use.

[0040] After the reduction motor 63 is started, it drives the worm 68 to rotate at a low speed. The worm 68 drives the screw 62 to rotate through the worm gear 69, thereby driving the lifting drive plate 67 to rise and fall along the guide rod 61. The lifting drive plate 67 drives the support rod 64, the horizontal support plate 65, and each electric heating tube 66 to rise and fall. The meshing of the worm gear 69 and the worm 68 has a self-locking function. Once the electric heating tube 66 reaches the desired height, the reduction motor 63 can be stopped to maintain the height.

[0041] A through hole 641 is provided along the centerline of the support rod 64, and a through cavity 651 is provided within the horizontal support plate 65. Each through cavity 651 extends radially along the horizontal support plate 65. One end of each through cavity 651 communicates with the bottom center of the electric heating tube 66, and the other end of each through cavity 651 communicates with the upper end of the through hole 641. The power cord of each electric heating tube 66 passes through the through cavity 651 and then exits through the through hole 641. The central through cavity 651 directly communicates with the upper end of the through hole 641.

[0042] A sealing ring is embedded in the bottom of the flange of the electric heating tube 66 and pressed against the upper end surface of the horizontal support plate 65. The sealing ring makes the sealing between the electric heating tube 66 and the horizontal support plate 65 better, preventing liquid material from penetrating into the threading cavity 651.

[0043] A sealing ring 610 is embedded in the center hole of the bottom wall of the evaporator body 1. Two sets of sealing rings 610 are installed to ensure a reliable seal with the outer periphery of the support rod 64. An annular sealing cover 611 is fixed above the center hole of the bottom wall of the evaporator body 1, and the support rod 64 passes through the center hole of the annular sealing cover 611. Example

[0044] On the basis of the first embodiment, in this embodiment, a first thermal insulation layer 71 and a first heat insulating layer 72 are provided to improve the heat insulation performance of the annular outer wall of the evaporation tank body 1. The outer periphery of the annular outer wall of the evaporation tank body 1 is first covered with the first heat insulating layer 72 and then with the first heat insulating layer 71.

[0045] The bottom wall of the evaporation tank body 1 is first covered with a third insulation layer 76, and then the third insulation layer 75 is covered on the outside of the third insulation layer 76. The third insulation layer 75 and the third insulation layer 76 make the bottom of the evaporation tank body 1 more thermally insulated.

[0046] The outer wall of the tank cover 2 is first covered with a second thermal insulation layer 74, and then a second thermal insulation layer 73 is included on the outer side of the second thermal insulation layer 74. The second thermal insulation layer 73 and the second thermal insulation layer 74 make the tank cover 2 better insulated and heat-preserving. The above insulation measures can not only prevent the heat inside the evaporation tank body 1 from being quickly lost to the outside, but also can reduce the continuous working time of the electric heating tube 66, making the electric heating tube 66 more energy-saving and energy-efficient.

[0047] The first heat insulation layer 72 , the second heat insulation layer 74 , and the third heat insulation layer 76 are heat insulation cotton, and the first heat insulation layer 71 , the second heat insulation layer 73 , and the third heat insulation layer 75 are heat insulation XPS extruded boards.

[0048] Working principle: The staff first opens the liquid inlet valve 13 to allow an appropriate amount of liquid material to be evaporated to enter the evaporation tank body 1. During this process, the liquid level is controlled to exceed the highest liquid level line. When the liquid material entering the evaporation tank body 1 reaches the required height, the liquid inlet valve 13 can be closed. At this time, the external temperature controller makes the multiple electric heating tubes 66 work according to the preset temperature value, so that the multiple electric heating tubes 66 heat the liquid material inside the evaporation tank body 1 to evaporate it. In this process, the heated and evaporated gas will be discharged upward through the exhaust pipe 3 to the next process. As the liquid material is continuously As the liquid material evaporates, the liquid level will gradually decrease. At this time, the staff only needs to control the reduction motor 63 to rotate forward, so that the reduction motor 63 can drive the screw 62 to rotate forward through the worm 68 and the worm wheel 69, and the screw 62 will drive the horizontal support plate 65 to descend through the lifting drive plate 67 and the support rod 64, and then the horizontal support plate 65 will drive multiple electric heating tubes 66 to descend together, so that the staff can adjust the use height of the electric heating tube 66 to the required height according to the gradually decreasing liquid material, thereby improving the heating effect of the electric heating tube 66 and avoiding dry burning and damage to the top of the electric heating tube 66.

[0049] At the same time, the first thermal insulation layer 71 and the first thermal insulation layer 72 provide better thermal insulation and heat preservation of the annular side of the evaporation tank body 1, while the third thermal insulation layer 75 and the third thermal insulation layer 76 provide better thermal insulation and heat preservation of the bottom of the evaporation tank body 1, and the second thermal insulation layer 73 and the second thermal insulation layer 74 provide better thermal insulation and heat preservation of the tank cover 2, which can not only prevent the heat inside the evaporation tank body 1 from being quickly lost to the outside, but also reduce the continuous working time of the electric heating tube 66, making the electric heating tube 66 more energy-saving.

[0050] The above description is only a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention, but does not limit the scope of patent protection of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. In addition to the above embodiments, the present invention may have other implementation methods without departing from the spirit and scope of the present invention. The present invention may also have various changes and improvements, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the attached claims and their equivalents. Technical features not described in the present invention can be achieved by or using existing technologies, and will not be described here.

Claims

1. An evaporation experimental device, comprising an evaporation tank, an upper end of the evaporation tank covered with a tank cover, a top center of the tank cover provided with an exhaust pipe, an upper side wall of the evaporation tank provided with a liquid inlet and a liquid inlet valve, a lower side wall of the evaporation tank provided with a discharge port and a discharge valve, and a support leg fixedly connected to the bottom of the evaporation tank, characterized in that: The inner cavity of the evaporation tank body is provided with a plurality of electric heating tubes, the bottom of each electric heating tube is fixed on a horizontal support plate, the bottom center of the horizontal support plate is fixedly connected to a support rod extending downward, the lower end of the support rod passes through the center of the bottom wall of the evaporation tank body and the lower end is fixedly connected to a lifting drive plate; The lifting drive plate is provided with a screw hole and a guide hole, a screw is screwed in the screw hole, the lower end of the screw passes through the through hole of the support base plate, is axially fixed and can rotate; the outer periphery of the support base plate is fixedly connected to the support leg, and the lower end of the screw is fixed with a worm gear, the worm gear is meshed with the worm, and the worm is fixedly installed at the output end of the reduction motor, and the reduction motor is fixed under the support base plate; a vertically extending guide rod is fixed between the support base plate and the bottom wall of the evaporation tank body, and the guide rod passes through the guide hole of the lifting drive plate.

2. The evaporation experimental device according to claim 1, characterized in that: The lower polished rod end of the screw is fixedly connected to a limit ring, which is embedded in a countersunk hole on the lower end surface of the bottom wall of the evaporator body. A limit cover for axially limiting the limit ring is provided below the limit ring. The limit cover is annular, and the outer circumference is fixed to the lower end surface of the bottom wall of the evaporator body by screws. The lower polished rod section of the screw passes through the center hole of the limit cover.

3. The evaporation experimental device according to claim 1, characterized in that: A through-hole for threading is provided along the center line of the support rod, and a through-hole for threading is provided inside the horizontal support plate. Each through-hole for threading extends radially along the horizontal support plate, and one end of each through-hole for threading is communicated with the bottom center of the electric heating tube, and the other end of each through-hole for threading is communicated with the upper port of the through-hole for threading. The power cord of each electric heating tube passes through the through-hole for threading and then passes through the through-hole for threading.

4. The evaporation experimental device according to claim 3, characterized in that: A sealing ring is embedded in the bottom of the flange of the electric heating pipe and pressed against the upper end surface of the horizontal supporting plate.

5. The evaporation experimental device according to claim 1, characterized in that: An observation window is provided on the upper portion of the side wall of the evaporation tank body.

6. The evaporation experimental device according to any one of claims 1 to 5, characterized in that: A sealing ring is embedded in the center hole of the bottom wall of the evaporation tank body to achieve sealing with the outer periphery of the support rod.

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