Evaporator for producing lyocell fibers

Abstract

The utility model discloses an evaporator for producing lyocell fibers. The evaporator comprises an evaporation assembly and a defoaming assembly, the defoaming assembly comprises a shell and a demister; the shell comprises a bottom plate and a plurality of side walls; the plurality of side walls are vertically arranged on the periphery of the bottom plate so as to form an accommodating space together with the bottom plate; the bottom plate is provided with a mounting position, and the demister can be detachably mounted at the mounting position; after the demister is mounted, the defoaming surface of the demister faces the evaporation assembly; at least one side wall of the plurality of side walls is provided with a first side plate, a second side plate and a third side plate from top to bottom; the first side plate is fixedly connected with the adjacent side wall, the third side plate is fixedly connected with the adjacent side wall, the top side of the second side plate is detachably connected with the bottom side of the first side plate, and the bottom side of the second side plate is hinged to the top side of the third side plate. According to the technical scheme, through the arrangement of the bottom plate and the second side plate, the demister can be taken out of the evaporator, and the demister is convenient to overhaul, replace and clean.

Description

Technical Field

[0001] The utility model relates to the technical field of lyocell fiber preparation equipment, in particular to an evaporator for producing lyocell fibers. Background Art

[0002] The production of traditional Lyocell fiber is inseparable from the evaporator. The demister and evaporation assembly inside the traditional evaporator used for Lyocell fiber production are fixed by welding to form an integrated and non-detachable one, which brings a lot of inconvenience to the inspection, replacement and cleaning of the demister. Utility Model Content

[0003] In view of this, the utility model provides an evaporator for producing lyocell fiber. By arranging the bottom plate and the second side plate, the demister can be taken out of the evaporator, which is convenient for inspection, replacement and cleaning of the demister.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An evaporator for producing lyocell fiber, comprising: an evaporation component and a defoaming component;

[0006] The defoaming assembly comprises: a shell and a defoamer;

[0007] The housing includes: a bottom plate and a plurality of side walls; the plurality of side walls are vertically arranged on the periphery of the bottom plate to form a receiving space together with the bottom plate;

[0008] The bottom plate has an installation position, and the installation position can be detachably installed with the demister; and after the demister is installed, the demister surface faces the evaporation component;

[0009] At least one of the plurality of side walls comprises a first side plate, a second side plate and a third side plate arranged from top to bottom;

[0010] The first side panel is fixedly connected to the adjacent side wall, the third side panel is fixedly connected to the adjacent side wall, the top side of the second side panel is detachably connected to the bottom side of the first side panel, and the bottom side of the second side panel is hinged to the top side of the third side panel.

[0011] Preferably, the top side of the second side panel is detachably connected to the bottom side of the first side panel by bolts.

[0012] Preferably, the bottom side of the second side panel and the top side of the third side panel are hingedly connected via a hinge.

[0013] Preferably, the defoaming assembly further comprises: a first cross member and a first stainless steel filter screen, wherein the first end and the third end of the first cross member are respectively detachably mounted on an opposite side wall, and the third end and the fourth end of the first cross member are respectively detachably mounted on the other opposite side wall;

[0014] The top of the shell is an open surface, and the first stainless steel filter screen covers the open surface; the middle part of the first stainless steel filter screen is connected to the middle part of the first cross member through a fastener.

[0015] Preferably, the invention further comprises: a distributor arranged between the evaporation component and the demister.

[0016] Preferably, it further comprises: a second stainless steel filter screen; the second stainless steel filter screen is arranged between the distributor and the demister.

[0017] Preferably, there are multiple demisters, and there are multiple installation positions, and the multiple demisters can be detachably installed in the installation positions in a one-to-one correspondence.

[0018] Preferably, the demister is clamped in the installation position.

[0019] Preferably, it further comprises: a flushing assembly disposed on the top of the housing;

[0020] The flushing assembly includes a nozzle for flushing the demister.

[0021] Preferably, the number of the nozzles is three groups.

[0022] It can be seen from the above technical solution that the evaporator for producing lyocell fiber provided by the utility model can take the demister out of the shell through the arrangement of the bottom plate and the second side plate, thereby reducing the maintenance personnel's stay time inside the evaporator during maintenance (avoiding personnel working in a confined space and improving safety), making maintenance and cleaning safer; and facilitating the maintenance, replacement and cleaning of the demister, which is beneficial to extending the service life of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of an evaporator provided in an embodiment of the present utility model;

[0025] Figure 2 A schematic structural diagram of a base plate provided in an embodiment of the present utility model;

[0026] Figure 3 A diagram showing the coordination structure of the first cross member and other components provided in an embodiment of the present utility model;

[0027] Figure 4 A side view of an evaporator provided in an embodiment of the present invention (including a flushing assembly).

[0028] The meanings of the reference numerals in the figures are as follows:

[0029] 1 is a defoamer assembly, 11 is a housing, 111 is a bottom plate, 112 is a side wall, 113 is a mounting position, 114 is a first side plate, 115 is a second side plate, 116 is a third side plate, 117 is a first cross member, 118 is a first rod, 119 is a second rod, and 12 is a defoamer;

[0030] 2 is the distributor;

[0031] 3 is a flushing component and 31 is a nozzle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The evaporator for producing lyocell fiber provided in the embodiment of the present invention is as follows: Figures 1-4 As shown, it includes: an evaporation component and a defoaming component 1;

[0034] The defoamer assembly 1 includes a housing 11 and a defoamer 12. The housing 11 includes a bottom plate 111 and a plurality of side walls 112. The plurality of side walls 112 are perpendicularly disposed around the periphery of the bottom plate 111 to form a storage space together with the bottom plate 111. The storage space can accommodate items including, but not limited to, the defoamer 12, and has a large space within it for maintenance personnel to enter.

[0035] The bottom plate 111 has an installation position 113, and the installation position 113 can be detachably installed with the demister 12; and after the demister 12 is installed, the demister surface of the demister 12 faces the evaporation assembly;

[0036] The first side panel 114 is fixedly connected to the adjacent side wall 112 , the third side panel 116 is fixedly connected to the adjacent side wall 112 , the top side of the second side panel 115 is detachably connected to the bottom side of the first side panel 114 , and the bottom side of the second side panel 115 is hinged to the top side of the third side panel 116 .

[0037] In the above technical solution, when the demister 12 needs to be inspected, replaced and cleaned, the connection between the top side of the second side panel 115 and the first side panel 114 is removed, and the bottom side of the second side panel 115 is hingedly rotated around the top side of the third side panel 116 to form a passage between the first side panel 114 and the third side panel 116 for the demister 12 and maintenance personnel to pass through. Personnel can enter the shell 11 through this passage and take the demister 12 to be inspected and cleaned out of the shell 11, and then inspect, replace and clean the demister 12.

[0038] Compared with the existing technology, the demister 12 can be taken outside the evaporator through the arrangement of the bottom plate and the second side plate 115, which reduces the maintenance personnel's stay time inside the evaporator during maintenance (avoiding personnel working in a confined space and improving safety), making maintenance and cleaning safer; and the demister can be inspected, replaced and cleaned, which is beneficial to extending the service life of the evaporator.

[0039] In one embodiment, at least two side walls 112 among the plurality of side walls 112 include a first side plate 114 , a second side plate 115 , a third side plate 116 and related structures (as described in the above solution), and the two side walls 112 are symmetrically arranged.

[0040] Optimize the above technical solutions, such as Figure 1 As shown, the top side of the second side panel 115 is detachably connected to the bottom side of the first side panel 114 by bolts. In the present technical solution, the second side panel 115 and the first side panel 114 are detachably connected by bolts. With such an arrangement, the second side panel 115 and the first side panel 114 can be quickly disassembled, and the bolts are industrial products, which is conducive to cost reduction.

[0041] Optimize the above technical solutions, such as Figure 1 As shown, the bottom side of the second side panel 115 and the top side of the third side panel 116 are hinged by a hinge, and the hinge and the second side panel 115 and the third side panel 116 are fixed by a pin. In the present technical solution, the second side panel 115 and the third side panel 116 are hinged by a hinge. With such an arrangement, the second side panel 115 can be quickly rotated around the third side panel 116 to form a passage for the demister 12 and maintenance personnel to pass through, and the hinge is an industrial product, which is conducive to cost reduction. It should also be noted that there are multiple hinges, and the multiple hinges are evenly spaced.

[0042] In this technical solution, if Figure 3 As shown, the defoaming assembly 1 further includes: a first cross member 117 and a first stainless steel filter screen, wherein the first end and the third end of the first cross member 117 are respectively detachably mounted on one opposite side wall 112, and the third end and the fourth end of the first cross member are respectively detachably mounted on the other opposite side wall 112;

[0043] The top of the housing 11 is an open surface, and the first stainless steel filter screen covers the open surface; the middle portion of the first stainless steel filter screen is connected to the middle part of the first cross member 117 via a fastener.

[0044] In the above technical solution, the first cross member 117 is mounted on the opening surface to facilitate the installation of the first stainless steel filter. Preferably, the fastener is a bolt, which is easy to disassemble. The first stainless steel filter can block the black residue that enters the steam condensate with the secondary steam, reduce the black residue in the steam condensate, and improve the operation rate of the evaporator. It should be noted that in Figure 3 The structure of the first stainless steel filter is hidden in the middle.

[0045] Optimize the above technical solutions, such as Figure 4 As shown, it also includes: a distributor 2 arranged between the evaporation component and the demister 12.

[0046] In the above technical solution, the distributor 2 can evenly distribute the liquid, thereby ensuring the stable operation of the evaporator; preferably, a distribution pipe is provided at the bottom of the distributor 2.

[0047] The above technical solution is optimized, further comprising: a second stainless steel filter screen; the second stainless steel filter screen is arranged between the distributor 2 and the defoamer 12; in the above technical solution, the stainless steel screen can prevent the black residue from falling into the solvent, thereby reducing the black residue in the solvent; in one embodiment, when the evaporator is shut down for maintenance, the black residue on the second stainless steel filter screen is first removed; in another embodiment, a second cross piece is included, and the second cross piece is fixed to the second stainless steel filter screen by a fastener; it should be noted that in Figure 3 The structure of the second stainless steel filter and the structure of the second cross member are hidden in the middle.

[0048] In this technical solution, if Figure 1 and Figure 3 As shown, there are multiple demisters 12 and multiple mounting positions 113. Multiple demisters 12 can be detachably installed in the mounting positions 113 one by one. In this technical solution, the evaporator has a better defoaming effect by setting multiple demisters 12.

[0049] In this technical solution, the demister 12 is snap-fitted into the installation position 113 . The snap-fitting makes the installation between the demister 12 and the installation position 113 more convenient and quick, and is conducive to the rapid disassembly and installation of the demister 12 .

[0050] In this technical solution, it also includes: a flushing assembly 3 arranged on the top of the shell 11; the flushing assembly 3 can be mounted on the top of the shell 11 through a third cross;

[0051] The flushing assembly includes a nozzle 31 for flushing the demister 12 .

[0052] In this technical solution, adding a nozzle 31 above the demister can better flush the demister. During normal operation, the nozzle is opened to flush the demister for minutes every day; this can improve the efficiency of the evaporator; if the nozzle is blocked, the nozzle can be replaced when the machine is shut down for maintenance.

[0053] The above technical solution is optimized, and the number of the nozzles 31 is three groups. The arrangement of the three groups of nozzles 31 is beneficial to a better flushing effect.

[0054] In one embodiment, the first stainless steel filter screen and the second stainless steel filter screen are made of 316L.

[0055] The technical features mentioned above, the technical features described below, and the technical features shown individually in the accompanying drawings may be combined arbitrarily, as long as the combined technical features do not conflict with each other. All possible feature combinations are technical contents explicitly described in this document. Any of the multiple sub-features included in the same statement can be applied independently and does not necessarily have to be applied in conjunction with the other sub-features.

[0056] The present invention will be further described below with reference to specific embodiments:

[0057] like Figures 1-4As shown, in addition to the mounting position 113, the bottom plate 111 also has a first rod 118 and a second rod 119. The first rod 118 is used to fix the demister 12 in the mounting position 113, and its two ends are detachably fixed to the side wall 112 of the shell 11. The second rod 119 is used to fix to the bottom of the shell 11. When the evaporator is shut down for maintenance, the maintenance personnel enter the interior of the evaporator, remove the connection between the first rod 118 and the side wall 112, remove the demister 12, and take it to the outside of the evaporator for thorough cleaning. At the same time, the maintenance personnel can quickly install a new demister 12 immediately, greatly reducing the maintenance and cleaning time, and can also shorten the maintenance time. During maintenance, the maintenance personnel's stay time in the evaporator is reduced, making maintenance and cleaning safer. The disassembled demister 12 can be thoroughly cleaned by soaking it in acid to remove the black residue attached to the surface of the demister. The cleaned demister 12 can be restored to the efficiency at the time of leaving the factory, maintaining the high-efficiency operation of the evaporator. A cleaned demister can reduce the amount of black residue entering the product, thereby improving product quality.

[0058] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0059] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An evaporator for producing lyocell fiber, characterized in that: include: Evaporation assembly and defoaming assembly (1); The defoaming assembly (1) comprises: a housing (11) and a defoamer (12); The housing (11) comprises: a bottom plate (111) and a plurality of side walls (112); the plurality of side walls (112) are vertically arranged on the periphery of the bottom plate (111) to form a receiving space together with the bottom plate (111); The bottom plate (111) has an installation position (113), and the installation position (113) can detachably install the demister (12); and after the demister (12) is installed, the demister surface of the demister (12) faces the evaporation component; At least one side wall (112) among the plurality of side walls (112) comprises a first side plate (114), a second side plate (115) and a third side plate (116) arranged from top to bottom; The first side panel (114) is fixedly connected to the adjacent side wall (112), the third side panel (116) is fixedly connected to the adjacent side wall (112), the top side of the second side panel (115) is detachably connected to the bottom side of the first side panel (114), and the bottom side of the second side panel (115) is hinged to the top side of the third side panel (116).

2. The evaporator according to claim 1, characterized in that The top side of the second side plate (115) and the bottom side of the first side plate (114) are detachably connected via bolts.

3. The evaporator according to claim 1, characterized in that The bottom side of the second side panel (115) and the top side of the third side panel (116) are hingedly connected via a hinge.

4. The evaporator according to claim 1, characterized in that The defoaming assembly (1) further comprises: a first cross member (117) and a first stainless steel filter screen, wherein the first end and the third end of the first cross member (117) are respectively detachably mounted on an opposite side wall (112), and the third end and the fourth end of the first cross member are respectively detachably mounted on another opposite side wall (112); The top of the shell (11) is an open surface, and the first stainless steel filter screen covers the open surface; the middle part of the first stainless steel filter screen is connected to the middle part of the first cross member (117) through a fastener.

5. The evaporator according to claim 1, characterized in that Also includes: A distributor (2) is provided between the evaporation assembly and the demister (12).

6. The evaporator according to claim 5, characterized in that Also includes: A second stainless steel filter screen; the second stainless steel filter screen is arranged between the distributor (2) and the defoamer (12).

7. The evaporator according to claim 1, characterized in that There are multiple demisters (12), and there are multiple installation positions (113). The multiple demisters (12) are detachably installed in the installation positions (113) in a one-to-one correspondence.

8. The evaporator according to claim 1, characterized in that The demister (12) is clamped in the installation position (113).

9. The evaporator according to any one of claims 1 to 8, characterized in that: Also includes: a flushing assembly (3) disposed on the top of the housing (11); The flushing assembly comprises a nozzle (31) for flushing the demister (12).

10. The evaporator according to claim 9, characterized in that The number of the nozzles (31) is three groups.

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