Four-effect falling-film low-temperature heat pump evaporator

Abstract

The utility model discloses a four -effect falling film low temperature heat pump evaporimeter, including four -effect falling film evaporimeter main part, four -effect falling film evaporimeter main part bottom is connected with processing spare, the processing spare includes: support plate, fixedly connected in four -effect falling film evaporimeter main part bottom, adjusting spare, install on support plate with four -effect falling film evaporimeter main part connection, adjusting spare includes fixedly connected in the conduit of four -effect falling film evaporimeter main part front side, the utility model relates to low temperature heat pump evaporimeter technical field. This four -effect falling film low temperature heat pump evaporimeter, liquid is led into four -effect falling film evaporimeter main part through feed pipe, second three -way valve, second elbow, shell, first elbow, first three -way valve, conduit, and the filter plate in the shell filters solid impurities in the liquid, and the first three -way valve and second three -way valve are reversed, at this moment, liquid is led into another group of shell through another group of second elbow and is led out from first elbow, first three -way valve and conduit.

Description

Technical Field

[0001] This utility model relates to the field of low-temperature heat pump evaporator technology, specifically a four-effect falling film type low-temperature heat pump evaporator. Background Technology

[0002] Multi-effect falling film evaporators are widely used in material concentration due to their high heat transfer efficiency. Referring to the patented announcement CN213931551U, a falling film low-temperature heat pump unit with an energy saver includes a falling film evaporator, a condenser, an energy saver, and a screw compressor. The falling film evaporator is connected to the energy saver and the screw compressor. This design is relatively practical and has certain application and promotional value. However, as described in the aforementioned patent, currently effective falling film low-temperature heat pump evaporators often struggle to continuously filter the liquid before liquid introduction, without requiring terminal liquid introduction, and also cannot effectively clear the filter end and remove impurities. This affects subsequent filtration operations and the quality of the liquid introduced into the evaporator. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a four-effect falling film low-temperature heat pump evaporator, which solves the problems of poor filtration effect of the introduced liquid at the filter end of the device, affecting the practical efficiency of the device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a four-effect falling film evaporator, comprising a four-effect falling film evaporator body with a built-in low-temperature heat pump, wherein a processing component for introducing liquid pretreatment is connected to the bottom of the four-effect falling film evaporator body, the processing component comprising:

[0005] The support plate is fixedly connected to the bottom of the main body of the four-effect falling film evaporator;

[0006] An adjusting component, mounted on a support plate and connected to the main body of a four-effect falling film evaporator, is used for liquid filtration and switching adjustment. The adjusting component includes a conduit fixedly connected to the front side of the main body of the four-effect falling film evaporator. A first three-way valve is fixedly connected to the lower end of the front side of the conduit. A set of filter elements for filtration is connected to each side of the first three-way valve. A second three-way valve is connected to the front side of both sets of filter elements. A feed pipe is fixedly connected to the upper end of the second three-way valve. The filter element includes a first bent pipe fixedly connected to the first three-way valve. A housing is fixedly connected to the upper end of the first bent pipe. A filter plate is fixedly connected to the middle of the inner side of the housing. A second bent pipe fixedly connected to the second three-way valve is fixedly connected to the front side of the housing. A discharge valve is fixedly connected to the bottom of the housing near the filter plate and the second bent pipe. A cylinder is fixedly connected to the rear side of the housing. A movable plate that is slidably connected to the inside of the housing is fixedly connected to the extended end of the front side of the cylinder. Several unblocking rods are fixedly connected to the front side of the movable plate.

[0007] Preferably, the adjusting component further includes a first ultrasonic sensor fixedly connected to the first bend, and a second ultrasonic sensor fixedly connected to the outside of the second bend.

[0008] Preferably, the discharge valve is a solenoid valve and has a discharge pipe at the bottom. The first three-way valve, the second three-way valve, the cylinder, and the discharge valve are all electrically connected to an external controller.

[0009] Preferably, the top of the first bend is located between the movable plate and the filter plate, and the movable plate is a circular plate with its edge fitting into the interior of the housing.

[0010] Preferably, the filter plate surface is provided with a plurality of filter holes, and a plurality of the unblocking rods are fixedly connected to the movable plate corresponding to the plurality of filter holes.

[0011] Preferably, the movable plate, the unblocking rod, and the filter plate are all made of stainless steel, and the housing is fixedly connected to the support plate.

[0012] Beneficial effects

[0013] This invention provides a four-effect falling film low-temperature heat pump evaporator. Compared with the prior art, it has the following advantages:

[0014] (1) The four-effect falling film low-temperature heat pump evaporator is equipped with an adjusting component. During the process of liquid being introduced into the main body of the four-effect falling film evaporator through the adjusting component, the liquid is introduced into the main body of the four-effect falling film evaporator through the feed pipe, the second three-way valve, the second bend pipe, the shell, the first bend pipe, the first three-way valve, and the conduit. The filter plate in the shell filters the solid impurities in the liquid. When it is necessary to clear the filter plate, the first three-way valve and the second three-way valve are reversed. At this time, the liquid is introduced into another set of shells through another set of second bend pipes and discharged from the first bend pipe, the first three-way valve, and the conduit. The discharge valve at the lower end of the original filter element is opened. The horizontal position of the movable plate and several clearing rods is adjusted by the cylinder, so that the several clearing rods push out the material blocking the several filter holes in the filter plate. The material is discharged to the appropriate position through the discharge valve and the discharge pipe. When it is necessary to clear the filter end, the filter components are switched to achieve uninterrupted filtration and clear the original filter end and discharge impurities.

[0015] (2) The four-effect falling film low-temperature heat pump evaporator is equipped with two sets of ultrasonic sensors. During the process of introducing liquid into the regulating component, the second ultrasonic sensor and the first ultrasonic sensor detect the liquid flow rate before and after passing through the shell. The degree of blockage at the filter end is determined by the difference in liquid flow rate, and it is determined whether unblocking treatment is required based on the degree of blockage. Attached Figure Description

[0016] Figure 1 This is a frontal perspective view of the present invention;

[0017] Figure 2 This is an enlarged view of the adjusting component of this utility model;

[0018] Figure 3 This is an enlarged cross-sectional view of the filter element of this utility model;

[0019] Figure 4 This is an enlarged view of the filter plate of this utility model.

[0020] In the diagram: 1. Main body of the four-effect falling film evaporator; 2. Support plate; 3. Adjusting component; 31. Guide tube; 32. First three-way valve; 33. First ultrasonic sensor; 34. Filter element; 341. First bend; 342. Shell; 343. Filter plate; 344. Second bend; 345. Discharge valve; 346. Cylinder; 347. Movable plate; 348. Unblocking rod; 35. Second ultrasonic sensor; 36. Second three-way valve; 37. Feed pipe. Detailed Implementation

[0021] 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.

[0022] refer to Figures 1-4 This utility model provides the following two technical solutions:

[0023] First embodiment: A four-effect falling film low-temperature heat pump evaporator includes a four-effect falling film evaporator body 1 with a built-in low-temperature heat pump. The bottom of the four-effect falling film evaporator body 1 is connected to a processing component for introducing liquid pretreatment. The processing component includes: a support plate 2, which is fixedly connected to the bottom of the four-effect falling film evaporator body 1; and an adjusting component 3, which is installed on the support plate 2 and connected to the four-effect falling film evaporator body 1 for liquid filtration and switching adjustment. The adjusting component 3 includes a conduit 31 fixedly connected to the front side of the four-effect falling film evaporator body 1. The lower end of the front side of the conduit 31 is fixedly connected to a first three-way valve 32. A set of filter elements 34 for filtration are respectively connected to both sides of the first three-way valve 32.

[0024] The front sides of the two sets of filter elements 34 are connected to a second three-way valve 36. The upper end of the second three-way valve 36 is fixedly connected to a feed pipe 37. The filter element 34 includes a first bent pipe 341 fixedly connected to the first three-way valve 32. The upper end of the first bent pipe 341 is fixedly connected to a housing 342. The middle of the inner side of the housing 342 is fixedly connected to a filter plate 343. The front side of the housing 342 is fixedly connected to a second bent pipe 344 fixedly connected to the second three-way valve 36. The bottom of the housing 342 is fixedly connected to a discharge valve 345 near the filter plate 343 and the second bent pipe 344. The rear side of the housing 342 is fixedly connected to a cylinder 346. The extended front end of the cylinder 346 is fixedly connected to a movable plate 347 that is slidably connected to the inside of the housing 342. The front side of the movable plate 347 is fixedly connected to several unblocking rods 348.

[0025] The discharge valve 345 is a solenoid valve and has a discharge pipe at the bottom. The first three-way valve 32, the second three-way valve 36, the cylinder 346, and the discharge valve 345 are all electrically connected to an external controller. The top of the first bend 341 is located between the movable plate 347 and the filter plate 343. The movable plate 347 is a circular plate and its edge fits into the inside of the housing 342. The surface of the filter plate 343 has several filter holes, and several unblocking rods 348 are fixedly connected to the movable plate 347 corresponding to several filter holes. The movable plate 347, the unblocking rods 348, and the filter plate 343 are all made of stainless steel. The housing 342 is fixedly connected to the support plate 2.

[0026] During the process of liquid being introduced into the main body 1 of the four-effect falling film evaporator via the regulating component 3, the liquid is introduced into the main body 1 of the four-effect falling film evaporator via the feed pipe 37, the second three-way valve 36, the second bend pipe 344, the shell 342, the first bend pipe 341, the first three-way valve 32, and the conduit 31. The filter plate 343 in the shell 342 filters the solid impurities in the liquid. When it is necessary to clear the filter plate 343, the first three-way valve 32 and the second three-way valve 36 are reversed. At this time, the liquid is introduced into another set of shells 342 via another set of second bend pipes 344 and discharged from the first bend pipe 341, the first three-way valve 32, and the conduit 31. The discharge valve 345 at the lower end of the original filter element 34 is opened. The horizontal position of the movable plate 347 and several clearing rods 348 is adjusted by the cylinder 346, so that the several clearing rods 348 push out the material blocking the several filter holes in the filter plate 343. The material is discharged to the appropriate position via the discharge valve 345 and the discharge pipe.

[0027] The main difference between the second implementation method and the first implementation method is that:

[0028] The regulating component 3 also includes a first ultrasonic sensor 33 fixedly connected to the first bend 341, and a second ultrasonic sensor 35 fixedly connected to the outside of the second bend 344. During the process of introducing liquid into the regulating component 3, the second ultrasonic sensor 35 and the first ultrasonic sensor 33 detect the liquid flow rate before and after passing through the housing 342, and determine the degree of blockage at the end of the filter element 34 by the difference in liquid flow rate.

[0029] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0030] In use, the user draws the liquid to be processed through the regulating element 3 into the main body 1 of the four-effect falling film evaporator for falling film evaporation and concentration. The main body 1 of the four-effect falling film evaporator is existing technology, so its internal structure and working principle will not be described in detail. During this process, the liquid is introduced into the main body 1 of the four-effect falling film evaporator via the feed pipe 37, the second three-way valve 36, the second bend 344, the shell 342, the first bend 341, the first three-way valve 32, and the conduit 31. The filter plate 343 inside the shell 342 filters solid impurities in the liquid. The second ultrasonic sensor 35 and the first ultrasonic sensor... 33 detects the liquid flow rate before and after passing through the housing 342. When the liquid flow rate difference reaches the critical value, the first three-way valve 32 and the second three-way valve 36 are reversed. At this time, the liquid is introduced into another housing 342 through another set of second bends 344 and discharged from the first bend 341, the first three-way valve 32 and the conduit 31. The discharge valve 345 at the lower end of the original filter element 34 is opened. The horizontal position of the movable plate 347 and several unblocking rods 348 is adjusted by the cylinder 346, so that several unblocking rods 348 are inserted into several filter holes in the filter plate 343. The material in the filter holes is pushed out and discharged to a suitable position through the discharge valve 345.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-effect falling film low-temperature heat pump evaporator, comprising a four-effect falling film evaporator body (1) with a built-in low-temperature heat pump, characterized in that: The bottom of the main body (1) of the four-effect falling film evaporator is connected to a processing unit for introducing liquid pretreatment, the processing unit including: Support plate (2) is fixedly connected to the bottom of the main body (1) of the four-effect falling film evaporator; An adjusting component (3), mounted on a support plate (2) and connected to the main body (1) of a four-effect falling film evaporator, is used for liquid filtration and switching adjustment. The adjusting component (3) includes a conduit (31) fixedly connected to the front side of the main body (1) of the four-effect falling film evaporator. A first three-way valve (32) is fixedly connected to the lower front end of the conduit (31). A set of filter elements (34) for filtration is connected to both sides of the first three-way valve (32). A second three-way valve (36) is connected to the front side of both sets of filter elements (34). A feed pipe (37) is fixedly connected to the upper end of the second three-way valve (36). The filter element (34) includes a first bent pipe (341) fixedly connected to the first three-way valve (32). A housing (342) is fixedly connected to the upper end of the first bend (341). A filter plate (343) is fixedly connected to the middle of the inner side of the housing (342). A second bend (344) is fixedly connected to the front side of the housing (342) and is fixedly connected to the second three-way valve (36). A discharge valve (345) is fixedly connected between the bottom of the housing (342) and the filter plate (343) and the second bend (344). A cylinder (346) is fixedly connected to the rear side of the housing (342). A movable plate (347) that is slidably connected to the front extension end of the cylinder (346) is fixedly connected to the front extension end of the housing (342). Several unblocking rods (348) are fixedly connected to the front side of the movable plate (347).

2. The four-effect falling film low-temperature heat pump evaporator according to claim 1, characterized in that: The adjusting component (3) also includes a first ultrasonic sensor (33) fixedly connected to the first bend (341), and a second ultrasonic sensor (35) fixedly connected to the outside of the second bend (344).

3. The four-effect falling film low-temperature heat pump evaporator according to claim 1, characterized in that: The discharge valve (345) is a solenoid valve and has a discharge pipe at the bottom. The first three-way valve (32), the second three-way valve (36), the cylinder (346), and the discharge valve (345) are all electrically connected to an external controller.

4. A four-effect falling film low-temperature heat pump evaporator according to claim 1, characterized in that: The top of the first bend (341) is located between the movable plate (347) and the filter plate (343). The movable plate (347) is a circular plate and its edge is attached to the inside of the shell (342).

5. A four-effect falling film low-temperature heat pump evaporator according to claim 1, characterized in that: The filter plate (343) has a plurality of filter holes on its surface, and a plurality of the unblocking rods (348) are fixedly connected to the movable plate (347) corresponding to the plurality of filter holes.

6. A four-effect falling film low-temperature heat pump evaporator according to claim 1, characterized in that: The movable plate (347), the unblocking rod (348), and the filter plate (343) are all made of stainless steel, and the housing (342) is fixedly connected to the support plate (2).

Images