A heater structure for a forced circulation evaporative crystallizer

Abstract

This invention belongs to the field of heater technology and discloses a heater structure for a forced circulation evaporation crystallizer, including a housing. The housing has an inlet on its lower side and an outlet on its upper side. Two heating mechanisms are longitudinally installed inside the housing, and a surrounding plate connects the two heating mechanisms. A partition plate is connected to the output end of the upper heating mechanism, and the partition plate has through holes. In this invention, when one of the two heating mechanisms needs maintenance, the other can be used as a substitute. Moreover, the heating mechanisms can be directly disassembled, and after disassembly, there is no need to worry about leakage of liquid inside the housing, thus ensuring working efficiency.

Description

Technical Field

[0001] This invention belongs to the field of heater technology, and specifically relates to a heater structure for a forced circulation evaporation crystallizer. Background Technology

[0002] Forced circulation evaporator crystallizers mainly consist of two parts: a heating chamber and an evaporation chamber. The heating chamber provides the heat required for evaporation, causing the liquid to boil and vaporize; the evaporation chamber completely separates the gas and liquid phases. The vapor generated in the heating chamber carries a large amount of liquid droplets. Upon reaching the larger evaporation chamber, these liquid droplets are separated from the vapor through self-condensation or the action of a demister. The demister is usually located at the top of the evaporation chamber. Evaporators are classified into three types according to operating pressure: atmospheric pressure, pressurized, and depressurized. They are also classified according to the movement of the solution within the evaporator: ① Circulating type: The boiling solution passes through the heating surface multiple times in the heating chamber, such as central circulation tube type, suspended basket type, external heating type, Levin type, and forced circulation type. ② Single-pass type: The boiling solution passes through the heating surface once in the heating chamber without circulation, and the concentrate is immediately discharged, such as rising film type, falling film type, stirred film type, and centrifugal film type. ③ Direct contact type: The heating medium directly contacts the solution for heat transfer, such as the submerged combustion evaporator. Evaporation devices consume a large amount of heating steam during operation. To save heating steam, multi-effect evaporators and vapor recompression evaporators can be used. Evaporators are widely used in chemical, light industry, and other sectors.

[0003] Due to the operational requirements of the heater, maintenance is necessary after the heater has been used for a period of time. Common maintenance includes the removal and replacement of spark plugs. However, during heater maintenance, the entire equipment cannot be used, resulting in downtime and reduced efficiency. Therefore, based on production efficiency, this application proposes a structure that does not require the heater to be replaced and will not be shut down. Summary of the Invention

[0004] In view of the problems mentioned in the background art above, the object of the present invention is to provide a heater structure for a forced circulation evaporation crystallizer.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A heater structure for a forced circulation evaporation crystallizer includes a housing, an inlet on the lower side of the housing, an outlet on the upper side of the housing, two heating mechanisms longitudinally installed inside the housing, a surrounding plate connecting the two heating mechanisms, and a partition plate connected to the output end of the upper heating mechanism, the partition plate having through holes;

[0007] The heating mechanism includes a base plate, a first outlet pipe connected to the base plate, a second outlet pipe connected to the side of the first outlet pipe, the second outlet pipe being L-shaped, and the horizontal plane of the outlet end of the second outlet pipe being at the same horizontal plane as the horizontal plane of the outlet end of the first outlet pipe.

[0008] The heating mechanism includes a first slide rail disposed inside the housing, a baffle is slidably mounted on the first slide rail, a first spring is connected between the tail end of the baffle and the housing, and the lower surface of the baffle is at the same level as the horizontal plane of the outlet end of the second outlet pipe and the horizontal plane of the outlet end of the first outlet pipe.

[0009] A water transfer chamber is connected between the base plate and the housing. The water transfer chamber encloses all space including the outlet end of the first outlet pipe and the first slide rail. The water transfer chamber is provided with a water outlet. After water enters the water transfer chamber, only the water outlet can discharge water.

[0010] The heating mechanism includes a heating body, and a top box is installed on the outside of the heating end of the heating body. The top box is a six-sided rectangular box with the side closest to the heating body as the left surface. The entire right surface, the right half of the upper surface, the right half of the lower surface, the right half of the front surface, and the right half of the rear surface of the top box are all provided with water passage holes. The top box is located above the outlet end of the first outlet pipe, and the lower surface of the top box blocks the outlet end of the first outlet pipe.

[0011] The heating mechanism includes a second slide rail disposed on the enclosure, the second slide rail being connected to a backing plate, a slider slidably mounted on the second slide rail, the slider being a right trapezoid, a second spring connecting the slider and the backing plate, the inclined surface of the slider facing the mounting opening of the heating body, the inclined surface of the slider tilting downwards, and the end of the slider contacting the upper surface of the top box;

[0012] When there is liquid on the right side of the enclosure, the liquid does not flow to the left side of the enclosure.

[0013] Furthermore, both the baffle and the outer side of the top box are covered with sealant. This design ensures airtightness, guarantees the baffle's sealing of the outlet ends of the first and second outlet pipes, and guarantees the top box's sealing of the outlet end of the first outlet pipe.

[0014] Furthermore, both the input port and the output port are equipped with one-way valves to prevent backflow.

[0015] Furthermore, the outer side of the housing is equipped with wing plates and mounting posts. This design ensures the installation strength and adaptability of the housing.

[0016] Furthermore, the heating element is mounted to the housing with at least four screws, a design that ensures installation strength.

[0017] Furthermore, both the first and second springs are covered with corrosion-resistant rubber sleeves on their outer sides. This design ensures service life and the duration of elasticity.

[0018] Furthermore, both the first and second slide rails are electroplated with a coating. This design not only prevents rust but also reduces friction, thereby ensuring the smooth sliding effect of the first and second slide rails.

[0019] Furthermore, a guide groove is installed between the enclosure and the housing to ensure the accuracy of the placement of the heating element.

[0020] The beneficial effects of using the present invention are as follows:

[0021] In this invention, the installation of two heating mechanisms allows for the use of the other to replace one when maintenance is required. Furthermore, the heating mechanisms can be directly disassembled, eliminating concerns about leakage of liquid inside the housing and ensuring work efficiency.

[0022] The installation of two heating mechanisms in this invention improves heating efficiency, expands the heating temperature range, and enhances the performance. Attached Figure Description

[0023] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0024] Figure 1 This is a schematic diagram of the overall connection structure of a heater for a forced circulation evaporation crystallizer according to an embodiment of the present invention during use;

[0025] Figure 2 This is a schematic diagram of the structure of a heater for a forced circulation evaporation crystallizer according to the present invention, when two heating bodies are installed.

[0026] Figure 3 This is a schematic diagram of the structure of a heater for a forced circulation evaporation crystallizer according to an embodiment of the present invention, when a heating body is installed;

[0027] Figure 4 This is a schematic diagram of the structure of a heater for a forced circulation evaporation crystallizer according to an embodiment of the present invention when the heating body is not installed;

[0028] Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle;

[0029] Figure 6 for Figure 4 Enlarged structural diagram at point B;

[0030] The symbols for the main components are explained below:

[0031] 1. Housing; 2. Inlet; 3. Outlet; 4. Heating mechanism; 5. Enclosure; 6. Partition; 7. Through hole; 8. Wing plate; 9. Mounting post; 10. Guide groove;

[0032] Base plate 41; First outlet pipe 42; Second outlet pipe 43; First slide rail 44; Baffle 45; First spring 46; Rotating water chamber 47; Water outlet 48; Heating body 49; Top box 410; Water passage hole 411; Second slide rail 412; Support plate 413; Slider 414; Second spring 415. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] like Figure 1 As shown, a heater structure for a forced circulation evaporation crystallizer according to the present invention includes a housing 1, an inlet 2 on the lower side of the housing 1, an outlet 3 on the upper side of the housing 1, two heating mechanisms 4 are longitudinally installed inside the housing 1, a surrounding plate 5 is connected between the two heating mechanisms 4, a partition plate 6 is connected to the output end of the upper heating mechanism 4, and the partition plate 6 is provided with a through hole 7.

[0035] The heating mechanism 4 includes a base plate 41, a first outlet pipe 42 connected to the base plate 41, a second outlet pipe 43 connected to the side of the first outlet pipe 42, the second outlet pipe 43 being L-shaped, and the horizontal plane of the outlet end of the second outlet pipe 43 being at the same horizontal plane as the horizontal plane of the outlet end of the first outlet pipe 42.

[0036] The heating mechanism 4 includes a first slide rail 44 disposed inside the housing 1. A baffle 45 is slidably mounted on the first slide rail 44. A first spring 46 is connected between the tail end of the baffle 45 and the housing 1. The lower surface of the baffle 45 is at the same level as the horizontal plane of the outlet end of the second outlet pipe 43 and the horizontal plane of the outlet end of the first outlet pipe 42.

[0037] A water-turning chamber 47 is connected between the base plate 41 and the housing 1. The water-turning chamber 47 encloses all the space including the outlet end of the first outlet pipe 42 and the first slide rail 44. The water-turning chamber 47 is provided with a water outlet 48. After water enters the water-turning chamber 47, only the water outlet 48 can discharge water.

[0038] The heating mechanism 4 includes a heating body 49. A top box 410 is installed on the outside of the heating end of the heating body 49. The top box 410 is a six-sided rectangular box with the side closest to the heating body 49 as the left surface. The right surface of the top box 410, the right half of the upper surface of the top box 410, the right half of the lower surface of the top box 410, the right half of the front surface of the top box 410, and the right half of the rear surface of the top box 410 are all provided with water passage holes 411. The top box 410 is located above the outlet end of the first outlet pipe 42, and the lower surface of the top box 410 blocks the outlet end of the first outlet pipe 42.

[0039] The heating mechanism 4 includes a second slide rail 412 disposed on the enclosure 5. The second slide rail 412 is connected to a back plate 413. A slider 414 is slidably mounted on the second slide rail 412. The slider 414 is a right trapezoid. A second spring 415 is connected between the slider 414 and the back plate 413. The inclined surface of the slider 414 faces the mounting opening of the heating body 49 and the inclined surface of the slider 414 is inclined downward. The end of the slider 414 contacts the upper surface of the top box 410.

[0040] When there is liquid on the right side of the enclosure 5, the liquid does not flow to the left side of the enclosure 5.

[0041] In this embodiment, when using a heater structure for a forced circulation evaporation crystallizer, the liquid enters the heating chamber under the effect of the pump, then enters the evaporation chamber for gas-liquid separation, and then flows back into the pump, thereby achieving forced circulation evaporation crystallization.

[0042] When the liquid enters the heating chamber:

[0043] like Figure 2 Two heating elements 49 are installed. Under the effect of the pump, the liquid flows through the first outlet pipe 42, through the water passage hole 411 on the top box 410, and is heated by the lower heating element 49. After entering the right side of the enclosure 5, it is stored and continuously heated by the lower heating element 49. When the liquid enters the upper heating mechanism 4, the upper heating mechanism 4 can be selected to work for auxiliary heating or heat preservation to ensure the heating effect. After passing through the upper heating mechanism 4, it is discharged from the through hole 7 of the partition 6, flows out of the outlet 3 and enters the evaporation chamber.

[0044] like Figure 3Only one heating element 49 is installed, shown in the diagram as installed on the lower side, but it can also be installed on the upper side as needed. Because the heating element 49 is installed on the lower side, the lower heating mechanism 4 operates normally. That is, under the effect of the pump, the liquid flows through the first outlet pipe 42, passes through the water passage hole 411 on the top box 410, is heated by the lower heating element 49, and then enters the right side of the enclosure 5 for accumulation, where it is continuously heated by the lower heating element 49. When the liquid enters the installation area of ​​the upper heating mechanism 4, because the upper heating mechanism 4 is not installed, under the effect of the first spring 46, the baffle 45 moves towards the outlet end of the first outlet pipe 42 and seals the outlet end of the first outlet pipe 42. Under the effect of the second spring 415, the slider 414 moves vertically downward toward the outlet end of the first outlet pipe 42, thus blocking the inlet of the top box 410. Due to the movement of the baffle 45, the outlet end of the first outlet pipe 42 is blocked, and the outlet end of the second outlet pipe 43 is opened. Therefore, the liquid is discharged from the outlet end of the second outlet pipe 43 and accumulates in the water transfer chamber 47. It flows out from the outlet 48 and continues to accumulate. After it is full, it is discharged from the through hole 7 of the partition 6 and flows out of the outlet 3 and enters the evaporation chamber. The water transfer chamber 47 is mainly used to assist in the addition of packing and to prevent the packing from moving with the liquid. It also supports the first slide rail 44. The water transfer chamber 47 can be removed as needed.

[0045] like Figure 4 Since the heating element 49 is not installed, under the effect of the first spring 46, the baffle 45 moves toward the outlet end of the first outlet pipe 42 and blocks the outlet end of the first outlet pipe 42. Under the effect of the second spring 415, the slider 414 moves vertically downward toward the outlet end of the first outlet pipe 42 to block the inlet of the top box 410. Because the movement of the baffle 45 blocks the outlet end of the first outlet pipe 42, the outlet end of the second outlet pipe 43 is opened. Therefore, the liquid is discharged from the outlet end of the second outlet pipe 43 and accumulates in the water transfer chamber 47. It flows out from the outlet 48 and continues to accumulate. After it is full, it is discharged from the through hole 7 of the partition 6 and flows out of the outlet 3 and enters the evaporation chamber. That is, at this time, the flow of liquid is not affected, but the heating function is no longer available.

[0046] like Figures 1-6When the heating body 49 is installed, the top box 410 installed at the end of the heating body 49 will first push the inclined surface of the slider 414, forcing the top block 414 to move towards the direction of the second spring 415 under the limit of the second slide rail 412. When the slider 414 rises completely and no longer obstructs the movement of the top box 410, under the effect of the second spring 415, the end of the slider 414 contacts the upper side of the top box 410, thus sealing the insertion port of the heating body 49. The top box 410 then pushes the end face of the baffle 45, forcing the baffle 45 to be subjected to force. The first slide rail 44 moves towards the first spring 46 under its limit until the baffle 45 moves and opens the outlet end of the first outlet pipe 42, while blocking the outlet end of the second outlet pipe 43. At this time, the liquid can only be discharged from the first outlet pipe 42 and pass through the heating end of the heating body 49 to achieve the heating purpose. It should be noted that it is not difficult for those skilled in the art to understand that when the heating body 49 is installed while the equipment is in operation, the faster the heating body 49 is inserted, the less liquid will flow out from the insertion port of the heating body 49.

[0047] In summary, with the installation of the two heating mechanisms 4, when one of the heating mechanisms 4 needs maintenance, it can be directly removed. Under the effect of the structure, the flow of liquid is not affected, and the problem of liquid leakage from the removal port of the heating mechanism 4 is not likely to occur. Then, the other heating mechanism 4 can be turned on to achieve the purpose of maintenance without stopping the machine. Moreover, the installation of the heating body 49 does not require stopping the machine.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A heater structure for a forced circulation evaporation crystallizer, comprising a housing (1), characterized in that: The housing (1) has an input port (2) on its lower side and an output port (3) on its upper side. Two heating mechanisms (4) are installed longitudinally inside the housing (1). A partition plate (5) is connected between the two heating mechanisms (4). The output end of the upper heating mechanism (4) is connected to a partition plate (6). The partition plate (6) has a through hole (7). The heating mechanism (4) includes a base plate (41), the base plate (41) is connected to a first outlet pipe (42), the side of the first outlet pipe (42) is connected to a second outlet pipe (43), the second outlet pipe (43) is L-shaped, and the horizontal plane of the outlet end of the second outlet pipe (43) is at the same horizontal plane as the horizontal plane of the outlet end of the first outlet pipe (42). The heating mechanism (4) includes a first slide rail (44) disposed inside the housing (1), a baffle (45) is slidably mounted on the first slide rail (44), a first spring (46) is connected between the tail end of the baffle (45) and the housing (1), and the lower surface of the baffle (45) is at the same level as the horizontal plane of the outlet end of the second outlet pipe (43) and the horizontal plane of the outlet end of the first outlet pipe (42); A water transfer chamber (47) is connected between the base plate (41) and the shell (1). The water transfer chamber (47) encloses all the space including the outlet end of the first outlet pipe (42) and the first slide rail (44). The water transfer chamber (47) is provided with a water outlet (48). After water enters the water transfer chamber (47), only the water outlet (48) can discharge water. The heating mechanism (4) includes a heating body (49). A top box (410) is installed on the outer side of the heating end of the heating body (49). The top box (410) is a six-sided rectangular box with the side closest to the heating body (49) as the left surface. The entire right surface of the top box (410), the right half of the upper surface of the top box (410), the right half of the lower surface of the top box (410), the right half of the front surface of the top box (410), and the right half of the rear surface of the top box (410) are all provided with water passage holes (411). The top box (410) is located above the outlet end of the first outlet pipe (42). The lower surface of the top box (410) blocks the outlet end of the first outlet pipe (42). The heating mechanism (4) includes a second slide rail (412) disposed on the enclosure (5), the second slide rail (412) is connected to a backing plate (413), a slider (414) is slidably mounted on the second slide rail (412), the slider (414) is a right trapezoid, a second spring (415) is connected between the slider (414) and the backing plate (413), the inclined surface of the slider (414) faces the mounting port direction of the heating body (49), the inclined surface of the slider (414) is inclined downward, and the end of the slider (414) contacts the upper surface of the top box (410); When there is liquid on the right side of the enclosure (5), the liquid does not flow to the left side of the enclosure (5).

2. The heater structure for a forced circulation evaporation crystallizer according to claim 1, characterized in that: Both the baffle (45) and the top box (410) are covered with sealant on the outside.

3. The heater structure for a forced circulation evaporation crystallizer according to claim 2, characterized in that: Both the input port (2) and the output port (3) are equipped with one-way valves.

4. The heater structure for a forced circulation evaporation crystallizer according to claim 3, characterized in that: The outer side of the housing (1) is fitted with a wing plate (8) and a mounting post (9).

5. The heater structure for a forced circulation evaporation crystallizer according to claim 4, characterized in that: The heating element (49) is mounted to the housing (1) by at least four screws.

6. The heater structure for a forced circulation evaporation crystallizer according to claim 5, characterized in that: Both the first spring (46) and the second spring (415) are covered with corrosion-resistant rubber sleeves on their outer sides.

7. The heater structure for a forced circulation evaporation crystallizer according to claim 6, characterized in that: Both the first slide rail (44) and the second slide rail (412) are electroplated with a coating.

8. The heater structure for a forced circulation evaporation crystallizer according to claim 7, characterized in that: A guide groove (10) is installed between the enclosure (5) and the shell (1).

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