Novel evaporator and feeding distributor

Abstract

The utility model provides a novel feeding distributor which comprises a tube box cylinder, the tube box cylinder is fixedly arranged on an upper tube plate through a flange and is sealed by a tube box sealing head, a feeding tube is fixedly arranged on the tube box sealing head, and a heat exchange tube penetrates through the upper tube plate and is in interference fit with the upper tube plate; a first-stage feeding distribution barrel, a second-stage feeding distribution disc and a third-stage feeding distribution head are arranged in the tube box barrel, the first-stage feeding distribution barrel and the second-stage feeding distribution disc are sequentially fixed in the tube box barrel from top to bottom, and the third-stage feeding distribution head is fixedly arranged on the heat exchange tube in a sleeving mode. And the output end of the feeding pipe penetrates through the pipe box sealing head and is fixed above the first-stage feeding distribution cylinder. The novel feeding distributor is arranged in the evaporator, three-stage distribution is applied, the first-stage feeding distribution barrel, the second-stage feeding distribution disc and the first-stage and third-stage feeding distribution heads are arranged, liquid materials are evenly distributed through the three-stage distribution and then enter each heat exchange pipe, and therefore the evaporation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporation equipment, in particular to a novel evaporator and a feed distributor. Background Art

[0002] Evaporator: Evaporator is a common equipment, widely used in various fields, such as food, chemical industry, pharmaceutical, etc. Its main working principle is: the material goes inside the tube, and the steam goes outside the tube. The material in the tube is heated by steam, and the low-boiling point components in the material are vaporized and removed by the evaporation process, thereby increasing the concentration of the remaining solute in the material and achieving the concentration of the solution. The quality of the evaporation effect depends on whether the material can enter each heat exchange tube evenly after entering the evaporator, the liquid goes down along the tube wall, and the vaporized gas rises in the center of the tube. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes a new evaporator and a feed distributor to achieve uniform distribution of liquid materials and improve the evaporation effect.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new feed distributor, including a tube box cylinder, the tube box cylinder is fixedly arranged on the upper tube plate with a flange, the tube box cylinder is closed with a tube box head, a feed pipe is fixedly arranged on the tube box head, and a heat exchange tube passes through the upper tube plate and is interference fit with the upper tube plate;

[0005] A primary feed distribution cylinder, a secondary feed distribution plate and a tertiary feed distribution head are arranged in the pipe box cylinder. The primary feed distribution cylinder and the secondary feed distribution plate are fixed in the pipe box cylinder from top to bottom in sequence, and the tertiary feed distribution head is fixedly sleeved on the heat exchange tube. The secondary feed distribution plate receives the liquid material flowing out of the primary feed distribution cylinder and evenly distributes it into each of the heat exchange tubes. The output end of the feed pipe passes through the pipe box head and is fixed above the primary feed distribution cylinder.

[0006] Furthermore, a plurality of distribution holes are provided on the secondary feed distribution plate, and a line connecting the centers of adjacent distribution holes passes through the geometric center of the heat exchange tube on the other side of the distribution hole.

[0007] Furthermore, an even number of adjusting bolts are arranged on the secondary feed distribution plate, and the adjusting bolts are symmetrically distributed on the secondary feed distribution plate.

[0008] Furthermore, a plurality of overflow notches are provided on the outer edge surface of the first-level feed distribution tube, and the plurality of overflow notches are evenly distributed on the outer edge surface of the first-level feed distribution tube.

[0009] Furthermore, an overflow notch is fixedly provided at the upper end of the three-stage feed distribution head, and a skirt notch is provided at the lower section of the three-stage feed distribution head, and the skirt notch is spaced 1-2 mm from the heat exchange tube.

[0010] Furthermore, a new type of evaporator includes a heat exchange cylinder, an upper tube plate and a lower tube plate are fixedly arranged on the upper and lower ends of the heat exchange cylinder respectively, a new type of feed distributor is fixedly arranged on the upper tube plate, a conical shell is fixedly arranged on the lower tube plate, a plurality of heat exchange tubes are arranged in the heat exchange cylinder, and the two ends of the heat exchange tubes are respectively interference fit with the upper tube plate and the lower tube plate.

[0011] Furthermore, a tie rod and a baffle are provided in the heat exchange cylinder. The baffle is evenly arranged based on the axial direction of the heat exchange cylinder. The baffle is vertically fixed on the inner wall of the heat exchange cylinder. The tie rod is fixed in the heat exchange cylinder along the axial direction of the heat exchange cylinder. One end of the tie rod is embedded and fixed in the lower surface of the upper tube plate, and the other end of the tie rod is vertically fixed to the baffle.

[0012] Furthermore, there are multiple tie rods, which are evenly arranged based on the heat exchange cylinder, and the angle between adjacent tie rods is 60°. An anti-collision baffle is also provided in the heat exchange cylinder, and the anti-collision baffle is horizontally fixed in the heat exchange cylinder based on the adjacent tie rods.

[0013] Furthermore, an ear-type support is fixedly provided on the outer edge surface of the heat exchange cylinder, a grounding plate is fixedly provided on the side of the ear-type support facing the ground, and the grounding plate is fixedly provided close to the ear-type support and away from the end of the heat exchange cylinder.

[0014] Furthermore, adjacent baffles are staggered and fixed in the heat exchange cylinder.

[0015] Compared with the prior art, the beneficial effects of the utility model include: through the new feed distributor set in the evaporator, the three-level distribution is applied, and the first-level feed distribution cylinder, the second-level feed distribution plate and the third-level feed distribution head are set. Through the three-level distribution, the liquid material is evenly distributed into each heat exchange tube, thereby improving the evaporation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0017] Figure 1 The cross-sectional structure of the novel evaporator is schematically shown;

[0018] Figure 2 Schematically shows Figure 1 Cross-sectional structure at position B;

[0019] Figure 3 The schematic diagram shows the cross-sectional structure of the novel feed distributor;

[0020] Figure 4 The cross-sectional structure of the first-stage feed distribution cylinder is schematically shown;

[0021] Figure 5 Schematically shows Figure 3 The cross-sectional structure at position A in the middle shows the distribution of the secondary feed distribution plate and heat exchange tubes;

[0022] Figure 6 The cross-sectional structure of the three-stage feed distribution header is schematically shown.

[0023] Numbers in the figure: 1-feed distributor, 11-feed pipe, 12-tube box head, 13-tube box cylinder, 14-first-stage feed distribution cylinder, 141-overflow notch, 15-second-stage feed distribution plate, 151-distribution small hole, 152-adjusting bolt, 16-third-stage feed distribution head, 161-skirt notch, 2-upper tube sheet, 3-heat exchange cylinder, 4-lower tube sheet, 5-conical shell, 6-heat exchange tube, 7-pull rod, 8-baffle, 9-anti-impact baffle, 10-ear support. DETAILED DESCRIPTION

[0024] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0025] Figure 1 The schematic diagram shows the cross-sectional structure of a novel evaporator. Figure 1 As shown, it includes a heat exchange cylinder 3, an upper tube sheet 2 and a lower tube sheet 4 are fixedly arranged on the upper and lower ends of the heat exchange cylinder 3, a new feed distributor 1 is fixedly arranged on the upper tube sheet 2, and a cone shell 5 is fixedly arranged on the lower tube sheet 4. A plurality of heat exchange tubes 6 are arranged in the heat exchange cylinder 3, and the two ends of the heat exchange tubes 6 are respectively embedded in the upper tube sheet 2 and the lower tube sheet 4, and the heat exchange tubes 6 are fixed to the upper tube sheet 2 and the lower tube sheet 4 by interference fit. An ear-type support 10 is fixedly arranged on the outer edge surface of the heat exchange cylinder 3, and a grounding plate is fixedly arranged on the side of the ear-type support 10 facing the ground, and the grounding plate is fixedly arranged close to the ear-type support 10 and away from the end of the heat exchange cylinder 3.

[0026] Tie rods 7 and baffles 8 are also provided in the heat exchange cylinder 3. The baffles 8 are evenly arranged based on the axial direction of the heat exchange cylinder 3. The spacing between adjacent baffles 8 is the same, and adjacent baffles 8 are fixed in the heat exchange cylinder 3 in a staggered manner, that is, if the baffle 8 located on the upper side is fixed based on one side of the heat exchange cylinder 3, the baffle 8 located below it is fixed on the other side of the heat exchange cylinder 3, thus completing the staggered fixation of adjacent baffles 8. Tie rods 7 are fixed in the heat exchange cylinder 3 along the axial direction of the heat exchange cylinder 3, one end of the tie rod 7 is embedded in the lower surface of the upper tube sheet 2, and the other end of the tie rod 7 is vertically fixed to the baffle 8 through a nut.

[0027] Figure 2 Schematically shows Figure 1 The cross-sectional structure at position B is as follows: Figure 2 As shown, there are multiple tie rods 7, which are evenly arranged based on the heat exchange cylinder 3. The angle between adjacent tie rods 7 is 60°. An anti-collision baffle 9 is also provided in the heat exchange cylinder 3. The anti-collision baffle 9 is horizontally fixed in the heat exchange cylinder 3 based on adjacent tie rods 7. The anti-collision baffle 9 and tie rods 7 are symmetrical based on a symmetry axis perpendicular to the anti-collision baffle 9.

[0028] Figure 3 The schematic diagram shows the cross-sectional structure of the new feed distributor, combined with Figure 3 The structure of the feed distributor 1 is described in detail. The feed distributor 1 includes a tube box cylinder 13, which is fixedly arranged on the upper tube sheet 2 with a flange, and the tube box cylinder 13 is closed with a tube box head 12. A feed pipe 11 is fixedly arranged on the tube box head 12, and the heat exchange tube 6 passes through the upper tube sheet 2 and is fixed to the upper tube sheet 2 by interference fit; a first-level feed distribution cylinder 14, a second-level feed distribution plate 15, and a first-level and third-level feed distribution head 16 are arranged in the tube box cylinder 13, and the first-level feed distribution cylinder 14 and the second-level feed distribution plate 15 are arranged in order from top to bottom. Fixed in the tube box cylinder 13, the three-stage feed distribution head 16 is fixedly sleeved on the heat exchange tube 6. The aforementioned feed pipe 11 is directly opposite to the primary feed distribution tube 14. The liquid material first enters the primary feed distribution tube 14 from the feed pipe 11 located on the tube box head 12, and enters the secondary distribution plate after primary distribution by the primary feed distribution tube 14, and then enters the three-stage feed distribution head 16. Through the aforementioned three-stage distribution, a uniform distribution effect is achieved, so that the liquid material evenly enters each heat exchange tube 6.

[0029] The primary feed distribution cylinder 14 , the secondary feed distribution plate 15 and the tertiary feed distribution head 16 are described in detail below.

[0030] Figure 4The cross-sectional structure of the first-stage feed distribution cylinder is schematically shown. Figure 4 As shown, the primary feed distribution cylinder 14 is a cylinder, and a plurality of overflow notches 141 are provided on the outer edge of the primary feed distribution cylinder 14, and the overflow notches 141 are evenly distributed on the outer edge of the primary feed distribution cylinder 14. In order to ensure the above-mentioned uniformity and reduce the difficulty of processing, when the width of the aforementioned overflow notches 141 and the width of the blocking area between adjacent overflow notches 141 are consistent, the width of the overflow notches 141 provided on the outer edge of the primary feed distribution cylinder 14 can be 1 / 24 of the circumference of the primary feed distribution cylinder 14; when the width of the aforementioned overflow notches 141 and the width of the blocking area between adjacent overflow notches 141 are inconsistent, the width of the overflow notches 141 provided on the outer edge of the primary feed distribution cylinder 14 can be 1 / 12 or 1 / 36 of the circumference of the primary feed distribution cylinder 14. The aforementioned embodiments are only a few embodiments for the convenience of implementation. The position and number of the overflow notches 141 opened on the cylinder body of the primary feed distribution cylinder 14 in the present invention do not only include the aforementioned embodiments. Any implementation of the overflow notches 141 evenly opened on the primary feed distribution cylinder 14 should fall within the protection scope of the present invention, and the present invention will not be described one by one here. In order to facilitate the aforementioned liquid material to enter the secondary feed distribution plate 15, the aforementioned overflow notches 141 should be set in the contact area between the outer edge surface and the bottom surface of the primary feed distribution cylinder 14, and the liquid material can flow out along the overflow notches 141 to achieve primary distribution, and the liquid material will not be left in the primary feed distribution cylinder 14.

[0031] Figure 5 Schematically shows Figure 3 The cross-sectional structure at position A is as follows: Figure 5 As shown, a plurality of distribution holes 151 are provided on the secondary feed distribution plate 15, and a line connecting the centers of adjacent distribution holes 151 passes through the geometric center of the heat exchange tube 6 on the other side of the distribution hole 151, that is, the distribution holes 151 provided on the secondary feed distribution plate 15 are actually provided in the gap area between the plurality of heat exchange tubes 6, and the distribution holes 151 are actually provided around the heat exchange tube 6, so that an extension line of a line connecting the centers of any two adjacent distribution holes 151 can pass through the geometric center of the heat exchange tube 6, and such an arrangement can ensure that the material directly enters the center of the heat exchange tube 6. An even number of adjusting bolts 152 are also arranged on the secondary feed distribution plate 15, and the adjusting bolts 152 are symmetrically distributed on the secondary feed distribution plate 15. In some embodiments, the adjusting bolts 152 and the aforementioned pull rod 7 can be arranged on the same axis. The horizontality of the secondary feed distribution plate 15 can be adjusted by the symmetrically arranged even number of adjusting bolts 152 to ensure that there is no deviation in the flow, so that the liquid material is evenly transferred to the tertiary feed distribution head 16 for distribution. The secondary feed distribution plate 15 is fixed above the upper tube plate 2 with a support rod and adjusting bolts.

[0032] Figure 6 The schematic diagram shows the cross-sectional structure of the three-stage feed distribution head. Figure 6 As shown, the tertiary feed distribution head 16 is installed on the inner hole of the head of the heat exchange tube 6, the upper end of the tertiary feed distribution head 16 is the overflow area, and the lower section is provided with a skirt notch 161, which is actually a plurality of vertical holes vertically opened along the tertiary feed distribution head 16, and the vertical holes are evenly distributed on the outer edge surface of the lower section of the tertiary feed distribution head 16; a gap of 1-2 mm is reserved between the skirt notch 161 and the heat exchange tube 6, and after the liquid material flows out from the overflow notch 141 at the upper end, the liquid material forms a thin film on the skirt notch 161 of the tertiary feed distribution head 16 and the wall of the heat exchange tube 6, and the liquid is evenly distributed. At the same time, it is isolated from the center of the heat exchange tube 6, which can reduce the entrainment of the liquid material by the evaporating gas.

[0033] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A new feed distributor, characterized in that: The heat exchange tube (6) is inserted through the upper tube plate (2) and is fixedly mounted on the upper tube plate (2) by a flange. The heat exchange tube (6) is inserted through the upper tube plate (2) and is interference fit with the upper tube plate (2). A primary feed distribution cylinder (14), a secondary feed distribution plate (15) and a tertiary feed distribution head (16) are arranged in the pipe box cylinder (13); the primary feed distribution cylinder (14) and the secondary feed distribution plate (15) are fixed in the pipe box cylinder (13) from top to bottom in sequence; the tertiary feed distribution head (16) is fixedly sleeved on the heat exchange tube (6); the secondary feed distribution plate (15) receives the liquid material flowing out of the primary feed distribution cylinder (14) and evenly distributes it into each of the heat exchange tubes (6); the output end of the feed pipe (11) passes through the pipe box head (12) and is fixed above the primary feed distribution cylinder (14).

2. The novel feed distributor according to claim 1 is characterized in that: A plurality of distribution holes (151) are provided on the secondary feed distribution plate (15), and a line connecting the centers of adjacent distribution holes (151) passes through the geometric center of the heat exchange tube (6) on the other side of the distribution hole (151).

3. The novel feed distributor according to claim 2 is characterized in that: An even number of adjusting bolts (152) are also provided on the secondary feed distribution plate (15), and the adjusting bolts (152) are symmetrically distributed on the secondary feed distribution plate (15).

4. The novel feed distributor according to claim 1 is characterized in that: A plurality of overflow notches (141) are provided on the outer edge surface of the primary feed distribution cylinder (14), and the plurality of overflow notches (141) are evenly distributed on the outer edge surface of the primary feed distribution cylinder (14).

5. The novel feed distributor according to claim 1 is characterized in that: An overflow notch (141) is fixedly provided at the upper end of the three-stage feed distribution head (16), and a skirt notch (161) is provided at the lower section of the three-stage feed distribution head (16), with a spacing of 1-2 mm between the skirt notch (161) and the heat exchange tube (6).

6. A novel evaporator, characterized in that: It comprises a heat exchange cylinder (3), an upper tube sheet (2) and a lower tube sheet (4) are fixedly arranged at the upper and lower ends of the heat exchange cylinder (3), a new feed distributor (1) as claimed in any one of claims 1 to 5 is fixedly arranged on the upper tube sheet (2), a cone shell (5) is fixedly arranged on the lower tube sheet (4), a plurality of heat exchange tubes (6) are arranged in the heat exchange cylinder (3), and the two ends of the heat exchange tubes (6) are respectively interference fit with the upper tube sheet (2) and the lower tube sheet (4).

7. The novel evaporator according to claim 6 is characterized in that: A tie rod (7) and a baffle (8) are also provided in the heat exchange cylinder (3). The baffle (8) is evenly arranged based on the axial direction of the heat exchange cylinder (3). The baffle (8) is vertically fixed on the inner wall of the heat exchange cylinder (3). The tie rod (7) is fixed in the heat exchange cylinder (3) along the axial direction of the heat exchange cylinder (3). One end of the tie rod (7) is embedded and fixed in the lower surface of the upper tube plate (2), and the other end of the tie rod (7) is vertically fixed to the baffle (8).

8. The novel evaporator according to claim 7 is characterized in that: There are multiple tie rods (7), which are evenly arranged based on the heat exchange cylinder (3), and the angle between adjacent tie rods (7) is 60°. An anti-collision baffle (9) is also provided in the heat exchange cylinder (3), and the anti-collision baffle (9) is horizontally fixed in the heat exchange cylinder (3) based on the adjacent tie rods (7).

9. The novel evaporator according to claim 6, characterized in that: An ear-type support (10) is fixedly arranged on the outer edge surface of the heat exchange cylinder (3), and a grounding plate is fixedly arranged on the side of the ear-type support (10) facing the ground. The grounding plate is fixedly arranged close to the ear-type support (10) and away from the end of the heat exchange cylinder (3).

10. The novel evaporator according to claim 7, characterized in that: Adjacent baffles (8) are fixed in the heat exchange cylinder (3) in an offset manner.

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