Discharging anti-blocking device of crystallization evaporator and evaporation system

Abstract

The utility model discloses a crystallization evaporator discharge anti-blocking device and an evaporation system, comprising: a discharge pipe, the discharge pipe comprising a discharge pipe inlet and a discharge pipe outlet; the scraper mechanism is arranged at an inlet of the discharging pipe, and part of the scraper mechanism extends into the discharging pipe; and the discharging valve is arranged at one end of an outlet of the discharging pipe. According to the utility model, crystals or scales attached to the inner wall of the discharge pipe can be scraped, so that blockage is prevented; under the continuous action of the scraper mechanism, crystal deposition and scaling at the inlet of the discharge pipe and in the nearby area can be effectively prevented, so that the risk of blockage is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline anti -blocking technical field especially, relates to a crystallization evaporimeter discharge anti -blocking device and evaporation system. BACKGROUND

[0002] In the industrial production process, as an important operation unit, evaporation technology is widely used in solution concentration, purification, solid crystalline product preparation and solvent recovery etc. links. Evaporation process through heating improves the temperature of solution to boiling point, promotes solvent vaporization and separates, so as to realize the above-mentioned purpose. This technology is favored because of mature process and wide application.

[0003] However, in actual operation, the evaporation system often faces a thorny problem: after the concentration of feed liquid, part of solute is easy to crystallize and precipitate during discharging, which leads to frequent blockage of the system, affecting production efficiency and stability of system operation. Especially in the short section position before the discharge valve of the discharge circulating main pipe, due to high concentration of material and low flow rate, crystal deposition or scaling phenomenon is particularly serious, becoming the " disaster area " of blockage.

[0004] To solve this problem, a variety of evaporation system anti-blocking measures have appeared in the market, such as backflushing, vibration, impact, etc. But these methods have deficiencies in practical application. Although the backflushing measure of tap water has a certain effect on the removal of crystals with strong solubility and loose structure, but the effect is limited for the treatment of stubborn scale formed by calcium, magnesium and other ions. While the vibration and impact measures may have the opposite effect, which can compress the originally loose crystals or scale, thus increasing the difficulty of removal. In addition, these anti-blocking facilities are mostly opened intermittently, which cannot be operated continuously for a long time, resulting in unstable anti-blocking effect and difficulty in meeting production requirements. CONTENT OF THE UTILITY MODEL

[0005] In order to overcome at least one of the defects of the prior art described above, the utility model provides a crystallization evaporimeter discharge anti-blocking device and evaporation system. The problem of pipeline blockage can be solved.

[0006] The utility model employs the technical scheme that:

[0007] A crystallization evaporimeter discharge anti-blocking device, comprising: a discharge pipe, the discharge pipe comprising a discharge pipe inlet and a discharge pipe outlet; a scraper mechanism, the scraper mechanism being arranged at the discharge pipe inlet and partially extending into the discharge pipe; and a discharge valve, the discharge valve being arranged at one end of the discharge pipe outlet.

[0008] By adopting the above scheme, the crystals or scale adhering to the inner wall of the discharge pipe can be scraped off, thereby preventing blockage. Through the continuous action of the scraper mechanism, the deposition and scaling of crystals at the discharge pipe inlet and the surrounding area can be effectively prevented, thereby significantly reducing the risk of blockage.

[0009] Further, the scraper mechanism comprises a scraper motor fixed outside the discharge pipe inlet, and the output end of the scraper motor is coaxial with the discharge pipe; a driving shaft drivingly connected with the output end of the scraper motor; and a spiral scraper spirally arranged on the driving shaft.

[0010] By adopting the above scheme, the overall design of the scraper mechanism is compact, occupies less space, and does not greatly affect the overall structure of the evaporator, so that the scraper mechanism is easier to install and maintain, and the operation difficulty and cost are reduced; by connecting the driving shaft with the spiral scraper, continuous operation of the scraper mechanism is realized without manual intervention, greatly improving the production efficiency and automation degree.

[0011] Further, the scraper radius of the spiral scraper is consistent with the radius of the discharge pipe.

[0012] By adopting the above scheme, the design of the spiral scraper enables it to closely fit the inner wall of the discharge pipe, and as the driving shaft rotates, the spiral scraper can efficiently scrape and clean along the axial direction of the discharge pipe, effectively removing the crystals and scale attached to the pipe wall, and preventing new crystals from depositing on the pipe wall, thereby significantly reducing the risk of blockage.

[0013] Further, a pipeline heating mechanism is arranged outside the discharge pipe, and the pipeline heating mechanism is used to heat the discharge pipe.

[0014] By adopting the above scheme, the pipeline heating mechanism can provide the necessary heat for the discharge pipe, keep the material in the pipe within a suitable temperature range, reduce the viscosity of the material, and reduce the tendency of crystallization, thereby effectively preventing blockage.

[0015] Further, the pipeline heating mechanism comprises a fan comprising an air inlet and an air outlet; a fan motor drivingly connected with the fan; a pipeline wrapping shell wrapping the discharge pipe, and a heat dissipation fin being arranged on the side of the pipeline wrapping shell abutting the discharge pipe; the pipeline wrapping shell is in communication with the air inlet; and a heating element is arranged inside the pipeline wrapping shell.

[0016] By adopting the above scheme, the floor area of the equipment can be reduced, and the overall layout efficiency of the production line can be improved.

[0017] Further, the pipeline wrapping shell comprises an upper shell body, a lower shell body, an air inlet arranged on the lower shell body and in communication with the air inlet of the fan, and an exhaust hole arranged on the upper shell body.

[0018] Through the above scheme, the structure of the pipeline wrapping shell is more stable, can withstand certain external force and pressure, and ensures the stability of the heating mechanism during operation.

[0019] Further, the side wall of the discharge pipe is connected with a cleaning pipeline, and the cleaning pipeline is connected with a steam blowing mechanism for cleaning the discharge pipeline and the scraper mechanism.

[0020] Through the above scheme, the steam blowing mechanism uses high-temperature and high-pressure steam to clean the discharge pipeline and the scraper mechanism, which can quickly flush away the dirt, deposits and crystals on the inner wall of the pipeline and the scraper, ensuring the smoothness of the pipeline, improving the cleanliness of the equipment, and helping to maintain the stable operation of the system.

[0021] Further, the steam blowing mechanism comprises a steam blowing valve, and the outlet end of the steam blowing valve is fitted to the inlet of the cleaning pipeline; and a steam source in communication with the inlet end of the steam blowing valve.

[0022] Through the above scheme, the outlet end of the steam blowing valve is directly fitted to the inlet of the cleaning pipeline, which reduces the intermediate links and improves the efficiency of steam transmission.

[0023] Further, the length of the spiral scraper of the scraper mechanism is not less than the length between the inlet of the discharge pipe and the cleaning pipeline.

[0024] Through the above scheme, the entire area from the inlet of the discharge pipe to the cleaning pipeline can be effectively cleaned.

[0025] An evaporation system comprises a separator, a heater, a crystallizer, a steam circulating pump and a crystallization evaporator discharge anti-blocking device.

[0026] Through the above scheme, through the joint action of the heater and the steam circulating pump, the system can realize efficient evaporation process, improve the evaporation rate and efficiency of the material, and the design of the crystallization evaporator discharge anti-blocking device effectively prevents the blocking problem of the material, ensures the smoothness of the discharge and the stable operation of the system.

[0027] In summary, the crystallization evaporator discharge anti-blocking device and the evaporation system have the following technical effects:

[0028] 1. By setting a scraper mechanism at the inlet of the discharge pipe and partially extending into the discharge pipe, the mechanical scraping action of the scraper effectively removes crystals or scale attached to the inner wall of the discharge pipe. This design significantly reduces the risk of blockage at the inlet and nearby area of the discharge pipe due to crystal deposition and scale, ensuring smooth operation of the system;

[0029] 2. Due to the effective solution to the blockage problem, the discharge process of the evaporation system is more smooth, reducing the downtime and cleaning cost caused by blockage. This helps to improve production efficiency, so that the production line can run continuously and stably, thereby increasing the economic benefit of the enterprise;

[0030] 3. The continuous action of the scraper mechanism not only prevents blockage, but also reduces the erosion and wear of the inner wall of the discharge pipe by the material. This helps to prolong the service life of the discharge pipe and other related equipment, reduces the replacement and maintenance frequency of the equipment, and further reduces the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the evaporation system of the embodiment of the present utility model;

[0032] Figure 2 is a plane structural schematic diagram of the anti-blocking structure of the embodiment of the present utility model;

[0033] Figure 3 is a plane structural schematic diagram of the anti-blocking structure of the embodiment of the present utility model;

[0034] Figure 4 is a structural schematic diagram of the spiral scraper of the embodiment of the present utility model;

[0035] Figure 5 is a three-dimensional structural schematic diagram of the pipeline heating mechanism of the embodiment of the present utility model;

[0036] Figure 6 is a cross-sectional structural schematic diagram of the pipeline heating mechanism of the embodiment of the present utility model.

[0037] Among them, the meaning of the reference signs is as follows: 1, discharge pipe; 11, discharge pipe inlet; 12, discharge pipe outlet; 13, discharge valve; 2, scraper mechanism; 21, scraper motor; 22, driving shaft; 23, spiral scraper; 24, material passage; 3, pipeline heating mechanism; 31, fan; 311, air inlet; 312, air outlet; 32, fan motor; 33, pipeline wrapping shell; 331, upper shell; 332, lower shell; 333, air inlet; 334, exhaust hole; 4, cleaning pipeline; 5, steam purging mechanism; 51, steam purging valve; 6, separator; 7, heater; 8, crystallizer; 9, steam circulating pump; 10, discharge pump. DETAILED DESCRIPTION

[0038] In order to better understand and implement, the following will be combined with the drawings of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described and discussed, obviously, only part of the examples of the utility model is described here, and not all examples, based on the examples in the utility model, all other examples obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.

[0039] In order to facilitate the understanding of the embodiments of the utility model, the following will be combined with the drawings to further explain and describe specific embodiments, and each embodiment does not constitute the limitation of the embodiments of the utility model.

[0040] In the description of the utility model, it is necessary to explain that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the utility model.

[0042] Embodiment 1 of the utility model refers to Figures 1-6 As shown in the figure, a kind of crystallization evaporator discharge anti-blocking device is disclosed, including discharge pipe 1, scraper mechanism 2 and discharge valve 13, the discharge pipe 1 includes discharge pipe inlet 11, discharge pipe outlet 12, the scraper mechanism 2 is arranged at the discharge pipe inlet 11, and part is inserted into the discharge pipe 1, the discharge valve 13 is arranged at one end of the discharge pipe outlet 12, scraper mechanism 2 is arranged at discharge pipe inlet 11, and part is inserted into discharge pipe 1, this design aims at the mechanical action of scraper, and the crystal or scale adhered to the inner wall of discharge pipe 1 is scraped, to prevent blockage;Through the continuous action of scraper mechanism 2, the crystal deposition and scale formation at discharge pipe inlet 11 and nearby area can be effectively prevented, thereby the risk of blockage is significantly reduced.

[0043] In some embodiments, the scraper mechanism 2 includes a scraper motor 21, a driving shaft 22 and a spiral scraper 23. The scraper motor 21 is fixed outside the discharge pipe inlet 11, and the output end of the scraper motor 21 is coaxial with the discharge pipe 1. The driving shaft 22 is drivingly connected to the output end of the scraper motor 21. The spiral scraper 23 is spirally arranged on the driving shaft 22. In the present embodiment 1, the driving shaft 22 is hollow, and the output end of the scraper motor 21 is inserted into the interior of the driving shaft 22, and the two are synchronously driven, so that the output end of the scraper motor 21, the driving shaft 22 and the spiral scraper 23 are synchronously rotated. The scraper radius of the spiral scraper 23 is consistent with the radius of the discharge pipe 1, so that it can tightly fit the inner wall of the discharge pipe 1. With the rotation of the driving shaft 22, the edges and centers of the spiral scraper 23 are provided with material passing holes 24 for the scraped crystals to pass through. The spiral scraper 23 can efficiently scrape and clean along the axial direction of the discharge pipe 1, which not only effectively removes the crystals and scale attached to the pipe wall, but also prevents new crystals from depositing on the pipe wall, thereby significantly reducing the risk of blockage. The overall design of the scraper mechanism 2 is compact, occupies less space, and does not greatly affect the overall structure of the evaporator, so that the scraper mechanism 2 is easier to install and maintain, and the operation difficulty and cost are reduced. Through the connection of the driving shaft 22 and the spiral scraper 23, the continuous operation of the scraper mechanism 2 is realized without manual intervention, which greatly improves the production efficiency and automation degree.

[0044] In use, when there is improper operation of the system, the closed crystals inside the discharge pipe 1 will increase, the current of the scraper motor 21 will be too large, and faults will easily occur. Therefore, in some embodiments, a pipe heating mechanism 3 is further provided outside the discharge pipe 1. The pipe heating mechanism 3 is used to heat the discharge pipe 1. The pipe heating mechanism 3 can provide the necessary heat for the discharge pipe 1, keep the material in the pipe at a suitable temperature range, reduce the viscosity of the material, and reduce the tendency of crystallization, thereby effectively preventing blockage.

[0045] Specifically, in some embodiments, the pipe heating mechanism 3 comprises a fan 31, a fan motor 32, a pipe wrapping shell 33 and a heating element, the fan 31 comprises an air inlet 311 and an air outlet 312, the fan motor 32 is drivingly connected with the fan 31, the pipe wrapping shell 33 wraps the discharge pipe 1, and the side of the pipe wrapping shell 33 is provided with a heat dissipation fin, the inside of the pipe wrapping shell 33 is communicated with the air inlet 311, and the heating element is arranged in the inside of the pipe wrapping shell 33, the fan 31 realizes the flow of air through the air inlet 311 and the air outlet 312, provides necessary cooling air for the heating element, and ensures the effective emission of heat, the setting of the heat dissipation fin further enhances the heat dissipation effect, so that the heat can be transferred to the discharge pipe 1 more quickly, thereby improving the heating speed, the driving connection of the fan motor 32 and the fan 31 enables the wind speed to be adjustable, so that the heating power and the heat dissipation effect can be adjusted according to actual needs; the pipe wrapping shell 33 tightly wraps the discharge pipe 1, which not only saves space, but also makes the whole heating mechanism more compact and beautiful. This design helps to reduce the floor area of the equipment and improve the overall layout efficiency of the production line.

[0046] Preferably, the pipe wrapping shell 33 comprises an upper shell 331, a lower shell 332, an air inlet 333 and an exhaust hole 334, the lower shell 332 is hingedly connected with the upper shell 331, preferably, one end of the upper shell 331 is hingedly connected with the lower shell 332, and the other end is fixed by a bolt, so that the structure of the pipe wrapping shell 33 is more stable and can withstand certain external force and pressure, ensuring the stability of the heating mechanism during work; the air inlet 333 is arranged on the lower shell 332 and is communicated with the air inlet 311 of the fan 31; the exhaust hole 334 is arranged on the upper shell 331, and the fan 31 can uniformly blow cooling air onto the heating element through the clear air flow channel, improving the heating efficiency. This helps to speed up the heat transfer speed, so that the discharge pipe 1 can reach the required temperature more quickly. At the same time, the setting of the exhaust hole 334 also reduces the accumulation of internal heat, avoiding damage or performance degradation of the equipment due to excessive temperature.

[0047] In some embodiments, to solve the problem of excessive current of the scraper motor 21, a cleaning pipe 4 can be additionally arranged on the side wall of the discharge pipe 1, and the cleaning pipe 4 is connected with a steam blowing mechanism 5 for cleaning the discharge pipe 1 and the scraper mechanism 2. The steam blowing mechanism 5 uses high-temperature and high-pressure steam to clean the discharge pipe 1 and the scraper mechanism 2, which can quickly flush away dirt, deposits and crystals on the inner wall of the pipe and the scraper, ensuring the smoothness of the pipe. Not only improves the cleanliness of the equipment, but also helps to maintain the stable operation of the system. Through regular cleaning, the blockage problem of the discharge pipe 1 and the scraper mechanism 2 can be effectively prevented.

[0048] Specifically, in some embodiments, the steam purging mechanism 5 comprises a steam purging valve 51 and a steam source, the outlet end of the steam purging valve 51 is fitted to the inlet of the cleaning pipe 4, and the steam source is in communication with the inlet end of the steam purging valve 51. Optionally, the steam source includes but is not limited to a steam generator, a steam boiler or a steam engine. The outlet end of the steam purging valve 51 is directly fitted to the inlet of the cleaning pipe 4, and this direct connection reduces intermediate links and improves the efficiency of steam transmission. By controlling the opening and closing of the steam purging valve 51, the operator can easily start and stop the steam purging process.

[0049] It should be noted that the length of the spiral scraper 23 of the scraper mechanism 2 is not less than the length between the inlet 11 of the discharge pipe and the cleaning pipe 4. This ensures that the entire area between the inlet of the discharge pipe and the cleaning pipe 4 can be effectively cleaned. This means that during the rotation of the scraper, all material residues, deposits and crystals in this area can be removed to prevent them from accumulating and causing blockage.

[0050] The utility model also relates to a kind of evaporation systems, including separator 6, heater 7, crystallization kettle 8, steam circulating pump 9 and crystallization evaporator discharge anti-blocking device, the separator 6, heater 7 and steam circulating pump 9 closed connection form steam circulation pipeline, steam circulation pipeline with the discharge pipe inlet 11 between being provided with conveying pipe, discharge pump 10 is provided on the conveying pipe, the discharge pipe outlet 12 is connected with crystallization kettle 8, by the joint action of heater 7 and steam circulating pump 9, system can realize efficient evaporation process, improve the evaporation rate and efficiency of material, the design of crystallization evaporator discharge anti-blocking device effectively prevents the plugging problem of material, ensure that the smoothness of discharge and the stable operation of system;Separator 6 is used to separate steam and liquid.In evaporation process, the mixture of steam and un-evaporated liquid enters separator 6, by separation, steam is led out for subsequent heating or circulation, and liquid is returned to system or is further processed, heater 7 is one of core components of evaporation system, for heating steam to required high temperature, to provide enough energy to evaporate liquid. The steam after heating circulates through steam circulation pipeline, to provide continuous heat for system, steam circulating pump 9 is responsible for driving steam to flow in steam circulation pipeline, to ensure that steam can be continuously heated through heater 7, and maintain the stable operation of system, conveying pipe connects steam circulation pipeline and the inlet of crystallization evaporator discharge anti-blocking device, for conveying material after heating and evaporation to discharge device.

[0051] It should be noted that in the above structure, the steam blowing mechanism 5 and the pipeline heating mechanism 3 are optional installation mechanisms, if the scraper mechanism 2 can meet the daily demand, it is not necessary to install, when it is needed, one of the two can be selected for optional installation, of course, both can be installed, better cleaning and anti-blocking effect.

[0052] In summary, the crystallization evaporator discharge anti-blocking device and the evaporation system have the following technical effects:

[0053] 1. By setting the scraper mechanism 2 at the inlet 11 of the discharge pipe 1 and partially extending into the discharge pipe 1, the mechanical scraping action of the scraper effectively removes the crystals or scale attached to the inner wall of the discharge pipe 1. This design significantly reduces the risk of blockage at the inlet 11 of the discharge pipe and the surrounding area due to crystal deposition and scale formation, ensuring smooth operation of the system;

[0054] 2. Since the blockage problem is effectively solved, the discharge process of the evaporation system is more smooth, reducing the downtime and cleaning cost caused by blockage. This helps to improve production efficiency, so that the production line can run continuously and stably, thereby increasing the economic benefits of enterprises;

[0055] 3. The continuous action of the scraper mechanism 2 not only prevents blockage, but also reduces the erosion and wear of the inner wall of the discharge pipe 1. This helps to prolong the service life of the discharge pipe 1 and other related equipment, reducing the replacement and maintenance frequency of the equipment, further reducing the production cost.

[0056] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above embodiments, but also includes technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, which are also considered within the scope of protection of the utility model.

Claims

1. A device for preventing material blockage at the discharge of a crystallization evaporator, characterized in that, include: The discharge pipe (1) includes a discharge pipe inlet (11) and a discharge pipe outlet (12); Scraper mechanism (2), the scraper mechanism (2) is located at the inlet (11) of the discharge pipe and extends partially into the discharge pipe (1); The discharge valve (13) is located at one end of the discharge pipe outlet (12).

2. The anti-blocking device for the discharge of a crystallizing evaporator according to claim 1, characterized in that, The scraper mechanism (2) includes: The scraper motor (21) is fixed outside the inlet (11) of the discharge pipe, and the output end of the scraper motor (21) is coaxial with the discharge pipe (1). A drive shaft (22) is driven and connected to the output end of the scraper motor (21); Spiral scraper (23) is spirally wound around the drive shaft (22).

3. The anti-blocking device for the discharge of a crystallizing evaporator according to claim 2, characterized in that, The radius of the spiral scraper (23) is the same as the radius of the discharge pipe (1).

4. The anti-blocking device for the discharge of a crystallizing evaporator according to claim 1, characterized in that, The discharge pipe (1) is fitted with a pipe heating mechanism (3), which is used to heat the discharge pipe (1).

5. The anti-blocking device for the discharge of a crystallizing evaporator according to claim 4, characterized in that, The pipeline heating mechanism (3) includes: A fan (31) includes an air inlet (311) and an air outlet (312); A fan motor (32) is driven and connected to the fan (31); The pipe is encased in a shell (33), which is wrapped around the discharge pipe (1) and has heat dissipation fins on one side of the discharge pipe (1). The interior of the pipe is encased in a shell (33) and is connected to the air inlet (311). A heating element is assembled inside the outer casing (33) of the pipe.

6. The anti-blocking device for the discharge of a crystallizing evaporator according to claim 5, characterized in that, The outer casing (33) of the pipe includes: Upper shell (331); The lower housing (332) is fastened to the upper housing (331); An air inlet (333) is provided on the lower housing (332) and is used to communicate with the air inlet (311) of the fan (31); An exhaust port (334) is provided on the upper housing (331).

7. A device for preventing material blockage at the discharge of a crystallizing evaporator according to any one of claims 1-6, characterized in that, The side wall of the discharge pipe (1) is connected to a cleaning pipe (4), and the cleaning pipe (4) is connected to a steam purging mechanism (5) for cleaning the discharge pipe (1) and the scraper mechanism (2).

8. The anti-blocking device for the discharge of a crystallizing evaporator according to claim 7, characterized in that, The steam purging mechanism (5) includes: A steam purge valve (51) is provided, the outlet end of which is fitted to the inlet of the cleaning pipe (4); A steam source is connected to the inlet end of the steam purge valve (51).

9. The anti-blocking device for the discharge of a crystallizing evaporator according to claim 7, characterized in that, The length of the spiral scraper (23) of the scraper mechanism (2) is not less than the length between the discharge pipe inlet (11) and the cleaning pipe (4).

10. An evaporation system, comprising a separator (6), a heater (7), a crystallizer (8), a steam circulation pump (9), and a discharge anti-blocking device for a crystallizer evaporator as described in any one of claims 1-9, characterized in that, The separator (6), heater (7) and steam circulation pump (9) are connected in a closed loop to form a steam circulation pipeline. A conveying pipe is provided between the steam circulation pipeline and the discharge pipe inlet (11). A discharge pump (10) is provided on the conveying pipe. The discharge pipe outlet (12) is connected to the crystallizer (8).

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