Extraction tank with tube array heating device at bottom

Abstract

The utility model discloses an extraction tank with a tube array heating device at the bottom, which comprises a tank body and a slag outlet door hermetically matched with the bottom of the tank body, lifting cylinder mechanisms are arranged on the outer side wall of the tank body at intervals, a heating cavity is arranged on the inner side of the slag outlet door, and a straight-through steam distribution plate is arranged in the heating cavity. A tubular heater is arranged at the position, located above the straight-through steam distribution disc, of the heating containing cavity and comprises a shell pass outer barrel, an upper tube plate, a lower tube plate and a plurality of heat exchange tubes, the upper end of each heat exchange tube is fixedly connected with the upper tube plate, and the lower end of each heat exchange tube is fixedly connected with the lower tube plate. The upper tube plate is fixedly connected with the upper end of the shell pass outer cylinder, the lower tube plate is fixedly connected with the lower end of the shell pass outer cylinder, the upper tube plate, the lower tube plate and the shell pass outer cylinder are assembled and fixed to form a shell pass heating cavity, and the heat exchange tubes are all located in the shell pass heating cavity. According to the technical scheme, the structural design is reasonable, the medicinal material heating speed is high, fluidity is good, heating is uniform, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical machinery and equipment, and particularly relates to an extraction tank with a tube heating device at the bottom. Background Art

[0002] An extraction tank is a commonly used leaching and extraction device in pharmaceutical and chemical industries, and is particularly suitable for the leaching and extraction of components contained in plant products; in order to facilitate slag discharging operation after the extraction of extracts, a split slag discharging door is arranged at the bottom of the extraction tank body; the slag discharging door generally adopts jacket heating, and the existing conventional slag discharging door generally adopts integral or honeycomb jacket for heating; both of these two jackets have the following problems:

[0003] (1) Since the switch connecting piece of the slag discharging door is connected to the jacket, a large force will be generated on the jacket when the slag discharging door is switched, causing the jacket to deform.

[0004] (2) After steam is introduced into the jacket, the slag discharging door is a pressurized device here, and there are multiple openings on the head, which brings a lot of inconvenience to the strength calculation of the equipment and the stress analysis of the slag discharging door.

[0005] The heating area of the integral jacket or honeycomb jacket is limited by aspects such as the cylinder diameter, the bottom liquid outlet, and the welding of related components of the slag discharging device, and it is difficult to adjust according to the actual situation. The uniformity of heating during the extraction process has a certain impact on the extraction rate of the product and the uniformity of the medicine. Since the heat is transferred from bottom to top, the medicinal materials are heated unevenly, and the medicinal materials are prone to being undercooked or locally boiling violently, with poor practicability. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an extraction tank with a tube heating device at the bottom, which has reasonable structural design, fast heating speed of medicinal materials, good fluidity, uniform heating and good practicability.

[0007] To achieve the above purpose, the utility model provides the following technical solution: an extraction tank with a tube heating device at the bottom, comprising a tank body and a slag discharging door hermetically matched with the bottom of the tank body. A plurality of lifting cylinder mechanisms for lifting the slag discharging door are arranged at intervals on the outer side wall of the tank body, and the slag discharging door is driven to move up or down through the lifting cylinder mechanisms; a heating cavity is arranged inside the slag discharging door, and a direct-through steam distribution plate is arranged in the heating cavity, and the direct-through steam distribution plate is located at the middle position of the heating cavity.

[0008] The heating cavity is provided with a shell-and-tube heater above the direct-through steam distribution plate. The shell-and-tube heater includes a shell-side outer cylinder, an upper tube sheet, a lower tube sheet, and a plurality of heat exchange tubes. The upper end of each heat exchange tube is fixedly connected to the upper tube sheet, and the lower end of each heat exchange tube is fixedly connected to the lower tube sheet. The upper tube sheet is fixedly connected to the upper end of the shell-side outer cylinder, and the lower tube sheet is fixedly connected to the lower end of the shell-side outer cylinder. After the upper tube sheet, the lower tube sheet, and the shell-side outer cylinder are assembled and fixed together, they form a shell-side heating cavity, and the heat exchange tubes are all located in the shell-side heating cavity.

[0009] The present invention is further provided that: a filter screen is provided above the upper tube sheet, and the filter screen is detachably connected to the upper tube sheet or the upper end of the slag discharge door.

[0010] The present invention is also further provided that: the lower end of the slag discharge door is fixedly provided with a shell-side steam inlet extension pipe, a shell-side condensate outlet extension pipe, a direct-through steam inlet extension pipe, and a material outlet extension pipe. The inner port of the shell-side steam inlet extension pipe is communicated with the side surface of the shell-side heating cavity, the inner port of the shell-side condensate outlet extension pipe is communicated with the side surface or the bottom of the shell-side heating cavity, the inner port of the direct-through steam inlet extension pipe is communicated with the direct-through steam distribution plate, and the inner port of the material outlet extension pipe is communicated with the bottom of the heating cavity.

[0011] The present invention is also further provided that: a vertical upper through hole is provided at the position of the upper port of each heat exchange tube on the upper tube sheet, and the upper end of each heat exchange tube is inserted into the aligned upper through hole; a vertical lower through hole is provided at the position of the lower port of each heat exchange tube on the lower tube sheet, and the lower end of each heat exchange tube is inserted into the aligned lower through hole.

[0012] The present invention is also further provided that: a plurality of support round steel bars are provided between the lower tube sheet and the inner wall surface of the slag discharge door. The lower end of the support round steel bar is fixedly connected to the inner wall surface of the slag discharge door, and the upper end of the support round steel bar is fixedly connected to the lower tube sheet.

[0013] The present invention is also further provided that: a plurality of positioning brackets are provided between the direct-through steam distribution plate and the inner wall surface of the slag discharge door, and the direct-through steam distribution plate is fixed by the positioning brackets.

[0014] The present invention is also further provided that: connecting flanges are integrally provided at the lower ends of the shell-side steam inlet extension pipe, the shell-side condensate outlet extension pipe, the direct-through steam inlet extension pipe, and the material outlet extension pipe.

[0015] The present invention is also further provided that: the upper tube sheet and the upper end of the inner wall surface of the slag discharge door are fixedly connected by bolts.

[0016] The utility model is further configured as follows: a rotating ring for locking the slag discharge door is rotatably provided at the lower end of the tank body. A plurality of locking grooves are circumferentially provided on the rotating ring, and locking rods matching with the plurality of locking grooves are provided on the slag discharge door. The slag discharge door is locked in the rotating ring through the locking rods and is hermetically fitted with the bottom of the tank body through the rotating ring. Two locking cylinders for locking the rotating ring on the tank body are symmetrically provided on the tank body.

[0017] The beneficial effects of the utility model are as follows: compared with the prior art, the structure of the utility model is reasonably designed. The heating area of the shell-and-tube heater in the slag discharge door is larger than that of the traditional coil or jacket. The shell-and-tube heat exchange is combined with direct steam, so that the medicinal materials are heated more evenly, and there will be no undercooked or local boiling phenomenon. During the extraction process of the extraction tank, this structure can truly realize the micro-boiling state of the extraction tank by passing steam. Moreover, adopting the shell-and-tube structure, the medicinal materials are in a rising film state during heating, which can accelerate the fluidity of the liquid medicine, thereby improving the extraction rate of the medicinal materials. The medicinal materials are heated quickly, have good fluidity, are heated evenly and have good practicability.

[0018] The following further illustrates the utility model in conjunction with the accompanying drawings of the specification and specific embodiments. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0020] Figure 2 is a schematic partial structural diagram of an embodiment of the utility model;

[0021] Figure 3 is a schematic partial explosion diagram of an embodiment of the utility model;

[0022] Figure 4 is a schematic partial bottom view of an embodiment of the utility model;

[0023] Figure 5 is a schematic structural diagram of the shell-and-tube heater of an embodiment of the utility model Figure 1 ;

[0024] Figure 6 is a schematic structural diagram of the shell-and-tube heater of an embodiment of the utility model Figure 2 ;

[0025] Figure 7 is an explosion diagram of the shell-and-tube heater of an embodiment of the utility model. Detailed Embodiments

[0026] In the description of this embodiment, it should be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, when terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] See Figures 1 to 7 , an extraction tank with a tube bundle heating device at the bottom disclosed by the present utility model includes a tank body 100 and a slag discharge door 1 that is hermetically fitted with the bottom of the tank body. A number of lifting cylinder mechanisms 200 for lifting the slag discharge door are spacedly arranged on the outer side wall of the tank body 100, and the slag discharge door 1 is driven to move up or down by the lifting cylinder mechanism 200; a heating cavity 11 is arranged inside the slag discharge door 1, and a direct-through steam distribution plate 2 is arranged in the heating cavity 11, and the direct-through steam distribution plate 2 is located at the middle position of the heating cavity 11;

[0028] A tube bundle heater 3 is arranged at a position above the direct-through steam distribution plate 2 in the heating cavity 11. The tube bundle heater 3 includes a shell-side outer cylinder 31, an upper tube sheet 32, a lower tube sheet 33, and a plurality of heat exchange tubes 34. The upper end of each heat exchange tube 34 is fixedly connected to the upper tube sheet 32, and the lower end of each heat exchange tube 34 is fixedly connected to the lower tube sheet 33. The upper tube sheet 32 is fixedly connected to the upper end of the shell-side outer cylinder 31, and the lower tube sheet 33 is fixedly connected to the lower end of the shell-side outer cylinder 31. After the upper tube sheet 32, the lower tube sheet 33, and the shell-side outer cylinder 31 are assembled and fixed together, a shell-side heating cavity is formed, and all the heat exchange tubes 34 are located in the shell-side heating cavity;

[0029] Preferably, the lifting cylinder mechanism 200 includes two lifting cylinders, and the two lifting cylinders are symmetrically installed on the outer side walls on the left and right sides of the tank body 100. The two lifting cylinders are fixedly connected to the outer side wall of the tank body 100 by bolts or welded to the outer side wall of the tank body 100 through a cylinder frame; the head of the piston rod of each lifting cylinder is connected to one side of the slag discharge door 1 through a joint.

[0030] A filter screen is arranged above the upper tube sheet 32, and the filter screen is detachably connected to the upper tube sheet 32 or the upper end of the slag discharge door 1. Preferably, the filter screen is fixedly connected to the upper tube sheet 32 or the upper end of the slag discharge door 1 by bolts.

[0031] To make the structural design of the present utility model more reasonable, preferably, a shell-side steam inlet extension pipe 4, a shell-side condensate outlet extension pipe 5, a direct-through steam inlet extension pipe 6, and a material outlet extension pipe 7 are fixedly arranged at the lower end of the slag discharge door 1. The inner port of the shell-side steam inlet extension pipe 4 communicates with the side surface of the shell-side heating cavity, and the inner port of the shell-side condensate outlet extension pipe 5 communicates with the side surface or the bottom of the shell-side heating cavity. The inner port of the direct-through steam inlet extension pipe 6 communicates with the direct-through steam distribution plate 2, and the inner port of the material outlet extension pipe 7 communicates with the bottom of the heating cavity 11.

[0032] Preferably, the shell-side outer cylinder 31, the upper tube sheet 32, and the lower tube sheet 33 are fixedly connected by welding or bolt connection.

[0033] An upper through hole is vertically arranged at the position of the upper port of each heat exchange tube 34 aligned with the upper tube sheet 32, and the upper end of each heat exchange tube 34 is inserted into the aligned upper through hole; a lower through hole is vertically arranged at the position of the lower port of each heat exchange tube 34 aligned with the lower tube sheet 33, and the lower end of each heat exchange tube 34 is inserted into the aligned lower through hole.

[0034] Preferably, the upper port of the heat exchange tube 34 exposes the upper orifice of the aligned upper through hole, and the lower port of the heat exchange tube 34 exposes the lower orifice of the aligned lower through hole.

[0035] A number of support round steel bars are arranged between the lower tube sheet 33 and the inner wall surface of the slag discharge door 1. The lower ends of the support round steel bars are fixedly connected to the inner wall surface of the slag discharge door 1, and the upper ends of the support round steel bars are fixedly connected to the lower tube sheet 33.

[0036] A number of positioning brackets are arranged between the direct-through steam distribution plate 2 and the inner wall surface of the slag discharge door 1, and the direct-through steam distribution plate 2 is fixed by the positioning brackets. Preferably, the number of the positioning brackets is 1-3, and the positioning brackets are fixedly connected by welding or bolt connection.

[0037] Connection flanges are integrally arranged at the lower ends of the shell-side steam inlet extension pipe 4, the shell-side condensate outlet extension pipe 5, the direct-through steam inlet extension pipe 6, and the material outlet extension pipe 7. Preferably, the upper ends of the shell-side steam inlet extension pipe 4, the shell-side condensate outlet extension pipe 5, the direct-through steam inlet extension pipe 6, and the material outlet extension pipe 7 are fixedly connected to the aligned interfaces by welding or threaded connection.

[0038] The upper tube sheet 32 and the upper end of the inner wall surface of the slag discharge door 1 are fixedly connected by bolt connection.

[0039] A rotating ring 300 for locking the slag discharge door is rotatably provided at the lower end of the tank body 100. A plurality of locking grooves are circumferentially provided on the rotating ring 300. Locking rods matching the plurality of locking grooves are provided on the slag discharge door 1. The slag discharge door 1 is locked in the rotating ring 300 through the locking rods and is hermetically fitted with the bottom of the tank body 100 through the rotating ring 300. Two locking cylinders 400 for locking the rotating ring 300 on the tank body 100 are symmetrically provided on the tank body 100. Preferably, a ratchet wheel is fixed on the rotating ring, and a locking mechanism matching the ratchet wheel is fixed on the tank body 100. Each locking cylinder 400 is locked and fixed to the tank body 100 through a cylinder bracket and bolts, and the front end of the piston rod of each locking cylinder 400 is connected to a partial position of the rotating ring 300 through a pin shaft.

[0040] During actual application, the slag discharge door is driven to move up or down by the lifting cylinder mechanism 200. The heating area of the tube-in-tube heater in the slag discharge door is larger than that of the traditional coil or jacket. The tube-in-tube heat exchange is combined with direct steam, so that the medicinal materials are heated more evenly, and there will be no phenomenon of undercooking or local boiling over. During the extraction process of the extraction tank, this structure can truly keep the extraction tank in a slightly boiling state by passing steam; moreover, with the tube-in-tube structure, the medicinal materials are in a rising film state during heating, which can accelerate the fluidity of the medicinal liquid, thereby improving the extraction rate of the medicinal materials.

[0041] In summary, the structure of the present utility model is reasonably designed, the medicinal materials are heated quickly, have good fluidity, are heated evenly and have good practicability.

[0042] The above embodiments are specific descriptions of the present utility model, which are only used to further illustrate the present utility model and cannot be understood as limiting the protection scope of the present utility model. Any non-essential improvements and adjustments made by those skilled in the art based on the content of the above utility model fall within the protection scope of the present utility model.

Claims

1. An extraction tank with a tube bundle heating device at the bottom, comprising a tank body (100) and a slag discharge door (1) that is hermetically fitted to the bottom of the tank body. A number of lifting cylinder mechanisms (200) for lifting the slag discharge door are arranged at intervals on the outer side wall of the tank body (100), and the slag discharge door (1) is driven to move up or down by the lifting cylinder mechanisms (200); it is characterized in that: Inside the slag discharge door (1), a heating cavity (11) is provided, and a direct-through steam distribution plate (2) is arranged inside the heating cavity (11), and the direct-through steam distribution plate (2) is located at the middle position of the heating cavity (11); At the position above the direct-through steam distribution plate (2) in the heating cavity (11), a shell-and-tube heater (3) is provided. The shell-and-tube heater (3) includes a shell-side outer cylinder (31), an upper tube sheet (32), a lower tube sheet (33) and a plurality of heat exchange tubes (34). The upper end of each heat exchange tube (34) is fixedly connected to the upper tube sheet (32), and the lower end of each heat exchange tube (34) is fixedly connected to the lower tube sheet (33). The upper tube sheet (32) is fixedly connected to the upper end of the shell-side outer cylinder (31), and the lower tube sheet (33) is fixedly connected to the lower end of the shell-side outer cylinder (31). After the upper tube sheet (32), the lower tube sheet (33) and the shell-side outer cylinder (31) are assembled and fixed together, a shell-side heating cavity is formed, and all the heat exchange tubes (34) are located in the shell-side heating cavity.

2. The extraction tank with a tube bundle heating device at the bottom according to claim 1, characterized in that: Above the upper tube sheet (32), a filter screen is provided, and the filter screen is detachably connected to the upper tube sheet (32) or the upper end of the slag discharge door (1).

3. The extraction tank with a bottom tube bundle heating device according to claim 1 or 2, characterized in that: At the lower end of the slag discharge door (1), a shell-side steam inlet extension pipe (4), a shell-side condensate outlet extension pipe (5), a direct-through steam inlet extension pipe (6) and a material outlet extension pipe (7) are fixedly provided. The inner port of the shell-side steam inlet extension pipe (4) communicates with the side surface of the shell-side heating cavity, the inner port of the shell-side condensate outlet extension pipe (5) communicates with the side surface or the bottom of the shell-side heating cavity, the inner port of the direct-through steam inlet extension pipe (6) communicates with the direct-through steam distribution plate (2), and the inner port of the material outlet extension pipe (7) communicates with the bottom of the heating cavity (11).

4. The extraction tank with a tube bundle heating device at the bottom according to claim 3, characterized in that: At the position corresponding to the upper port of each heat exchange tube (34) on the upper tube sheet (32), a vertical upper through hole is provided, and the upper end of each heat exchange tube (34) is inserted into the aligned upper through hole; at the position corresponding to the lower port of each heat exchange tube (34) on the lower tube sheet (33), a vertical lower through hole is provided, and the lower end of each heat exchange tube (34) is inserted into the aligned lower through hole.

5. The extraction tank with a tube heating device at the bottom according to claim 4, characterized in that: Between the lower tube sheet (33) and the inner wall surface of the slag discharge door (1), a number of support round steel bars are provided. The lower ends of the support round steel bars are fixedly connected to the inner wall surface of the slag discharge door (1), and the upper ends of the support round steel bars are fixedly connected to the lower tube sheet (33).

6. The extraction tank with a tube heating device at the bottom according to claim 5, characterized in that: Between the direct-through steam distribution plate (2) and the inner wall surface of the slag discharge door (1), a number of positioning brackets are provided, and the direct-through steam distribution plate (2) is fixed by the positioning brackets.

7. An extraction tank with a tube bundle heating device at the bottom according to claim 6, characterized in that: At the lower ends of the shell-side steam inlet extension pipe (4), the shell-side condensate outlet extension pipe (5), the direct-through steam inlet extension pipe (6) and the material outlet extension pipe (7), connecting flanges are integrally provided.

8. The extraction tank with a tube heating device at the bottom according to claim 7, characterized in that: The upper tube sheet (32) and the upper end of the inner wall surface of the slag discharge door (1) are fixedly connected by bolts.

9. The extraction tank with a tube heating device at the bottom according to claim 1, characterized in that: A rotating ring (300) for locking the slag discharge door is rotatably provided at the lower end of the tank body (100). A plurality of locking grooves are circumferentially provided on the rotating ring (300). Locking rods are provided on the slag discharge door (1) and are matched with the plurality of locking grooves. The slag discharge door (1) is locked within the rotating ring (300) through the locking rods and is in sealing cooperation with the bottom of the tank body (100) through the rotating ring (300). Two locking cylinders (400) for locking the rotating ring (300) on the tank body are symmetrically provided on the tank body (100).

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