Multi-section preheating plate type evaporator

Abstract

The utility model provides a multi-section preheating plate type evaporator which comprises a supporting frame, a containing cavity is formed in the middle of the supporting frame, and the upper side and the lower side of the interior of the containing cavity are each provided with a set of guide rods. Compared with the prior art, the device has the advantages that through the design of the limiting mechanism, the moving plate can be pulled to vertically move through the electric push rod, the moving plate vertically moves to extrude the end blocks on the two side edges of the outer surface, the end blocks can drive the movable rod to rotate with the installation base as the fulcrum, and the movable rod can extrude and push the sliding sleeve when rotating; the sliding sleeve can slide on the movable rod, then the sliding sleeve can descend along with rotation of the movable rod, the sliding sleeve can push the clamping plates to descend, the clamping plates can be inserted into the containing cavity, and the clamping plates inserted into the two sides can be clamped to the side edges of the first side edge plate and the second side edge plate correspondingly. And then the first side plate, the second side plate, the first plate bundle and the second plate bundle between the first side plate and the second side plate are clamped and fixed.

Description

Technical Field

[0001] This utility model is a multi-stage preheating plate evaporator, belonging to the field of evaporators. Background Technology

[0002] High-efficiency multi-stage preheating plate evaporators, as advanced preheating evaporation and concentration equipment, are mainly used to preheat materials and evaporate moisture from dilute materials through the transfer of high-temperature enthalpy of steam, thereby obtaining concentrated materials. They are widely used in the chemical and pharmaceutical industries, such as for the purification of organic acids, amines, and alcohols. They are also used in the food and beverage industry, such as for the concentration of dairy products, fruit juices, and sugars. Furthermore, they are used in the natural organic product industry, such as in fermentation, gum making, and the evaporation of viscous water. They are also used in the evaporation and concentration of black water in the paper industry. With the continuous development of modern industrial technology, the application fields of plate evaporators will become increasingly widespread.

[0003] Existing technologies, such as the multi-stage preheating plate evaporator disclosed in 201410588113.8, increase the saturated steam flow rate and the amount of unconcentrated material processed per unit time by providing two steam channels and a material inlet channel in each plate bundle of the evaporator, thereby improving production efficiency and saving energy. At the same time, by combining the plate preheater and the plate evaporator into one, the heat loss in the process of connecting the traditional external preheater to the evaporator can be effectively reduced, and the material and steam can be quickly brought to the evaporation temperature or close to the evaporation temperature through heat exchange. Furthermore, the saturated steam is shared, saving saturated steam resources and reducing economic costs.

[0004] However, using bolts to fix the structure can lead to problems. During long-term use of the evaporator, the evaporator generates a lot of heat, and thermal expansion and contraction can cause changes in the structure of the device. This can damage and interfere with the threaded holes and bolts on the device, affecting the service life of the bolt connection and easily causing structural instability. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-stage preheating plate evaporator.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A multi-stage preheating plate evaporator includes a support frame with a placement cavity in the middle. A set of guide rods is provided on the upper and lower sides of the placement cavity. A first plate bundle and a second plate bundle stacked together are placed on the upper and lower sets of guide rods. A material preheating system is provided on the first plate bundle, and an evaporation and condensation system is provided on the second plate bundle. A partition is provided between the first and second plate bundles, with an opening communicating with the material preheating system and the evaporation and condensation system. Side plates one and two are provided on the sides of the first and second plate bundles, respectively. A set of limiting mechanisms that cooperate with side plates one and two are provided on the upper and lower sides of the placement cavity.

[0008] Furthermore, the limiting mechanism includes an inner cavity formed in the inner wall of the support frame, with two inlets and outlets communicating with the placement cavity on the inner cavity, and an electric push rod provided on the inner wall of the inner cavity. The telescopic end of the electric push rod is connected to a movable plate, and the movable plate is slidably connected in the inner cavity.

[0009] Furthermore, the limiting mechanism also includes mounting seats fixed on both sides of the inner wall of the inner cavity. A movable rod is rotatably connected to the mounting seat. An end block that cooperates with the movable plate is fixed to the end of the movable rod. A sliding sleeve is slidably connected to the movable rod. A snap-fit ​​plate is movably connected to the sliding sleeve. The end of the snap-fit ​​plate passes through the inlet and outlet into the placement cavity. The snap-fit ​​plates on both sides are pressed together with the outer surface ends of the first side plate and the second side plate, respectively. A reset assembly that cooperates with the movable rod is also provided on the inner wall of the inner cavity.

[0010] Furthermore, the reset assembly includes a spring groove formed in the inner wall of the inner cavity. A reset spring and a sliding block are provided inside the spring groove. The two ends of the reset spring are respectively connected to the inner wall of the spring groove and the sliding block. A fixing member is fixed to the outer surface of the sliding block away from the reset spring, and the end of the fixing member extends into the inner cavity.

[0011] Furthermore, the reset assembly also includes a sliding hole formed on the movable rod, and the end of the fixing member is slidably connected in the sliding hole.

[0012] Furthermore, both the snap-fit ​​plate and the fixing member have grooves on their tops, and rotating shafts are provided on both sides of the opening of the grooves. The two sets of rotating shafts are respectively movably connected to the outer surface of the sliding sleeve and the inside of the sliding hole.

[0013] The beneficial effects of this utility model are:

[0014] Through the design of the limiting mechanism, when it is necessary to limit and fix the side plates 1 and 2 located on both sides of the first and second plate bundles, the moving plate can be moved vertically by the electric push rod. The vertical movement of the moving plate can squeeze the end blocks on both sides of the outer surface. The end blocks will rotate with the movable rod as the fulcrum. When the movable rod rotates, it will squeeze and push the sliding sleeve, so that the sliding sleeve can slide on the movable rod. Then, as the movable rod rotates, the sliding sleeve will descend, and the sliding sleeve will push the snap-fit ​​plate to descend. The snap-fit ​​plate will be inserted into the placement cavity. The snap-fit ​​plates inserted on both sides will respectively snap onto the sides of the side plates 1 and 2, thereby clamping and fixing the side plates 1 and 2, as well as the first and second plate bundles between them.

[0015] Through the design of the reset assembly, when it is necessary to release the limiting fixation of the snap-fit ​​plate on side plate one and side plate two, the electric push rod is activated. The electric push rod pushes the moving plate to reset, and the resetting movement of the moving plate will release the compression on the two end blocks. At this time, under the action of the reset spring, the reset spring pushes the sliding block to reset, and the resetting movement of the sliding block will push the fixing component to reset. The resetting movement of the fixing component will push the inner wall of the sliding hole through the shaft, and then push the movable rod to reset into the inner cavity to release the limiting fixation of side plate one and side plate two. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a multi-section preheating plate evaporator according to the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of a multi-section preheating plate evaporator according to the present invention;

[0019] Figure 3 This is a schematic diagram of the limiting mechanism structure of a multi-segment preheating plate evaporator according to the present invention. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the limiting mechanism structure of a multi-segment preheating plate evaporator according to the present invention. Figure 2 .

[0021] In the diagram, 1. Support frame; 2. Placement cavity; 3. First plate bundle; 4. Second plate bundle; 5. Partition; 6. Side plate one; 7. Side plate two; 8. Inner cavity; 9. Electric push rod; 10. Moving plate; 11. Mounting base; 12. Movable rod; 13. End block; 14. Sliding sleeve; 15. Snap-fit ​​plate; 16. Sliding hole; 17. Spring groove; 18. Return spring; 19. Sliding block; 20. Fixing component; 21. Guide rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a multi-stage preheating plate evaporator technical solution, including a support frame 1. The support frame 1 has a placement cavity 2 in its middle. Inside the placement cavity 2, a set of guide rods 21 are respectively provided on the upper and lower sides. A first plate bundle 3 and a second plate bundle 4, stacked together, are placed on the upper and lower sets of guide rods 21. The first plate bundle 3 is equipped with a material preheating system, and the second plate bundle 4 is equipped with an evaporation and condensation system. A partition 5 is provided between the first plate bundle 3 and the second plate bundle 4. The partition 5 is equipped with a connection to the material preheating system. The opening is connected to the evaporation and condensation system. The sides of the first plate bundle 3 and the second plate bundle 4 are respectively provided with side plate 6 and side plate 7. The upper and lower sides of the placement cavity 2 are respectively provided with a set of limiting mechanisms that cooperate with the side plate 6 and side plate 7. The first plate bundle 3, the second plate bundle 4, the material preheating system and the evaporation and condensation system mentioned above are all publicly disclosed structures in the prior art, such as the multi-stage preheating plate evaporator disclosed in 201410588113.8. Therefore, this utility model does not need to be described in detail.

[0024] See Figures 2-4The limiting mechanism includes an inner cavity 8 formed in the inner wall of the support frame 1. The inner cavity 8 has two inlets and outlets communicating with the placement cavity 2. An electric push rod 9 is provided on the inner wall of the inner cavity 8. The telescopic end of the electric push rod 9 is connected to a movable plate 10, which is slidably connected in the inner cavity 8. The limiting mechanism also includes mounting seats 11 fixed on both sides of the inner wall of the inner cavity 8. A movable rod 12 is rotatably connected to the mounting seat 11. An end block 13 cooperating with the movable plate 10 is fixed to the end of the movable rod 12. A sliding sleeve 14 is slidably connected to the movable rod 12. A snap-fit ​​plate 15 is movably connected to the sliding sleeve 14. The end of the snap-fit ​​plate 15 penetrates into the placement cavity 2 through the inlets and outlets. The snap-fit ​​plates 15 on both sides are pressed together with the outer surfaces of the first side plate 6 and the second side plate 7, respectively. The inner wall of the inner cavity 8 also has... A reset assembly that cooperates with the movable rod 12; through the design of the limiting mechanism, when it is necessary to limit and fix the side plate 6 and side plate 7 located on both sides of the first plate bundle 3 and the second plate bundle 4, the moving plate 10 can be moved vertically by the electric push rod 9. The vertical movement of the moving plate 10 can squeeze the end blocks 13 on both sides of the outer surface. The end blocks 13 will rotate with the movable rod 12 around the mounting base 11. When the movable rod 12 rotates, it will squeeze and push the sliding sleeve 14, so that the sliding sleeve 14 can slide on the movable rod 12. Then, as the movable rod 12 rotates, the sliding sleeve 14 will descend, and the sliding sleeve 14 will push the snap-fit ​​plate 15 to descend. The snap-fit ​​plate 15 will be inserted into the placement cavity 2. The snap-fit ​​plates 15 inserted on both sides will respectively snap onto the sides of the side plate 6 and the side plate 7, thereby clamping and fixing the side plate 6 and the side plate 7, as well as the first plate bundle 3 and the second plate bundle 4 between them.

[0025] See Figures 2-4The reset assembly includes a spring groove 17 formed in the inner wall of the inner cavity 8. A reset spring 18 and a sliding block 19 are disposed inside the spring groove 17. Both ends of the reset spring 18 are connected to the inner wall of the spring groove 17 and the sliding block 19, respectively. A fixing member 20 is fixed to the outer surface of the sliding block 19 away from the reset spring 18. The end of the fixing member 20 extends into the inner cavity 8. The reset assembly also includes a sliding hole 16 formed in the movable rod 12. The end of the fixing member 20 is slidably connected to the sliding hole 16. Through the design of the reset assembly, when needed... To release the limiting fixation of the snap-fit ​​plate 15 on the side plate 6 and the side plate 7, the electric push rod 9 is activated. The electric push rod 9 pushes the moving plate 10 to reset and move. The reset and movement of the moving plate 10 will release the pressure on the two end blocks 13. At this time, under the action of the reset spring 18, the reset spring 18 pushes the sliding block 19 to reset and move. The reset and movement of the sliding block 19 will push the fixing member 20 to reset and move. The reset and movement of the fixing member 20 will push the inner wall of the sliding hole 16 through the shaft, thereby pushing the movable rod 12 to reset and move into the inner cavity 8 to release the limiting fixation of the side plate 6 and the side plate 7.

[0026] See Figure 3 Both the snap-fit ​​plate 15 and the fixing member 20 have grooves on their tops. The openings of the grooves are provided with rotating shafts on both sides. The two sets of rotating shafts are movably connected to the outer surface of the sliding sleeve 14 and the inside of the sliding hole 16, respectively. Through the setting of the rotating shafts, the end of the snap-fit ​​plate 15 and the outer surface of the sliding sleeve 14, as well as the fixing member 20 and the inner wall of the sliding hole 16, can be movably connected.

[0027] When it is necessary to limit and fix the side plates 6 and 7 located on both sides of the first plate bundle 3 and the second plate bundle 4, the moving plate 10 can be moved vertically by the electric push rod 9. The vertical movement of the moving plate 10 can squeeze the end blocks 13 on both sides of the outer surface. The end blocks 13 will rotate with the movable rod 12 around the mounting base 11. When the movable rod 12 rotates, it will squeeze and push the sliding sleeve 14, so that the sliding sleeve 14 can slide on the movable rod 12. As the movable rod 12 rotates, the sliding sleeve 14 will descend, and the sliding sleeve 14 will push the snap-fit ​​plate 15 to descend. The snap-fit ​​plate 15 will be inserted into the placement cavity 2. The snap-fit ​​plates 15 inserted on both sides will respectively snap onto the sides of the side plates 6 and 7, thereby clamping and fixing the side plates 6 and 7, as well as the first plate bundle 3 and the second plate bundle 4 between them.

[0028] When it is necessary to release the limiting fixation of the snap-fit ​​plate 15 on the side plate 6 and the side plate 7, the electric push rod 9 is activated. The electric push rod 9 pushes the moving plate 10 to reset and move. The reset and movement of the moving plate 10 will release the pressure on the two end blocks 13. At this time, under the action of the reset spring 18, the reset spring 18 pushes the sliding block 19 to reset and move. The reset and movement of the sliding block 19 will push the fixing member 20 to reset and move. The reset and movement of the fixing member 20 will push the inner wall of the sliding hole 16 through the shaft, and then push the movable rod 12 to reset and move into the inner cavity 8 to release the limiting fixation of the side plate 6 and the side plate 7.

[0029] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-stage preheating plate evaporator, characterized in that, The device includes a support frame (1), a placement cavity (2) in the middle of the support frame (1), a set of guide rods (21) on the upper and lower sides of the placement cavity (2), a first plate bundle (3) and a second plate bundle (4) stacked together are placed on the upper and lower sets of guide rods (21), a material preheating system is provided on the first plate bundle (3), an evaporation and condensation system is provided on the second plate bundle (4), a partition (5) is provided between the first plate bundle (3) and the second plate bundle (4), an opening connected to the material preheating system and the evaporation and condensation system is provided on the partition (5), a side plate one (6) and a side plate two (7) are provided on the sides of the first plate bundle (3) and the second plate bundle (4), and a set of limiting mechanisms that cooperate with the side plate one (6) and the side plate two (7) are provided on the upper and lower sides of the placement cavity (2).

2. The multi-stage preheating plate evaporator according to claim 1, characterized in that, The limiting mechanism includes an inner cavity (8) formed in the inner wall of the support frame (1). The inner cavity (8) has two inlets and outlets that communicate with the placement cavity (2). An electric push rod (9) is provided on the inner wall of the inner cavity (8). The telescopic end of the electric push rod (9) is connected to a moving plate (10). The moving plate (10) is slidably connected in the inner cavity (8).

3. A multi-stage preheating plate evaporator according to claim 2, characterized in that, The limiting mechanism also includes mounting seats (11) fixed on both sides of the inner wall of the inner cavity (8). A movable rod (12) is rotatably connected to the mounting seat (11). An end block (13) that cooperates with the movable plate (10) is fixed to the end of the movable rod (12). A sliding sleeve (14) is slidably connected to the movable rod (12). A snap-fit ​​plate (15) is movably connected to the sliding sleeve (14). The end of the snap-fit ​​plate (15) passes through the inlet and outlet into the placement cavity (2). The snap-fit ​​plates (15) on both sides are pressed together with the outer surface ends of the side plate one (6) and the side plate two (7), respectively. A reset assembly that cooperates with the movable rod (12) is also provided on the inner wall of the inner cavity (8).

4. A multi-stage preheating plate evaporator according to claim 3, characterized in that, The reset assembly includes a spring groove (17) formed in the inner wall of the inner cavity (8). The spring groove (17) is provided with a reset spring (18) and a sliding block (19). The two ends of the reset spring (18) are respectively connected to the inner wall of the spring groove (17) and the sliding block (19). A fixing member (20) is fixed on the outer surface of the sliding block (19) away from the reset spring (18). The end of the fixing member (20) extends into the inner cavity (8).

5. A multi-stage preheating plate evaporator according to claim 4, characterized in that, The reset assembly also includes a sliding hole (16) formed on the movable rod (12), and the end of the fixing member (20) is slidably connected in the sliding hole (16).

6. A multi-stage preheating plate evaporator according to claim 5, characterized in that, Both the snap-fit ​​plate (15) and the fixing member (20) have grooves on their tops. The openings of the grooves are provided with rotating shafts on both sides. The two sets of rotating shafts are respectively movably connected to the outer surface of the sliding sleeve (14) and the inside of the sliding hole (16).

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