Two-stage MVR (Mechanical Vapor Recompression) scraper dryer
The dual-stage MVR scraper dryer solves the parameter adjustment problem of traditional drying equipment through the design of primary drying components and rolling drying components, realizing a highly efficient and stable material drying process, and improving production efficiency and energy utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-10
Smart Images
Figure CN223985507U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present disclosure relate to the technical field of drying equipment, and in particular, to a double-stage MVR scraper dryer. BACKGROUND
[0002] In the fields of industrial production and environmental protection, drying various materials is a very common and critical operation. With the continuous development of technology and the increasing demand for production, traditional drying equipment and technology gradually reveal many limitations, especially in the scenario of requiring double-stage drying.
[0003] In the chemical, food, pharmaceutical and other industries, the drying process of many materials not only requires the removal of moisture, but also has strict requirements on the quality of the dried materials. For example, in the production of chemical products, if some fine chemical raw materials are not dried uniformly or are over-dried during drying, it may cause changes in the chemical properties of the products, affecting the quality and performance of the products.
[0004] For some materials with high humidity and high viscosity, the drying efficiency of traditional drying equipment is low. These materials have high moisture content at the beginning of drying, and require a large amount of heat to quickly evaporate the water. In the later stage of drying, the moisture content in the material gradually decreases, and if high-power heating continues, it is easy to cause local overheating of the material, affecting the product quality. Traditional single-stage drying equipment is difficult to flexibly adjust the drying parameters, resulting in long drying time, large energy consumption, and increased production cost. CONTENT OF THE INVENTION
[0005] To overcome the above-mentioned defects, embodiments of the present disclosure provide a double-stage MVR scraper dryer, which solves the technical problem that the traditional single-stage drying equipment in the prior art is difficult to flexibly adjust the drying parameters, resulting in long drying time, large energy consumption, and increased production cost.
[0006] According to one aspect, at least one embodiment of the present disclosure provides a double-stage MVR scraper dryer, comprising:
[0007] a chassis, a drying roller, and a material box, the drying roller being rotatably connected in the chassis, and the material box being fixed to the surface of the chassis;
[0008] a primary drying assembly, the primary drying assembly being arranged inside the material box;
[0009] a rolling drying assembly, the rolling drying assembly being arranged between the drying roller and the material box;
[0010] a scraping assembly, the scraping assembly being arranged on the surface of the chassis;
[0011] The rolling drying assembly includes a cavity formed inside the drying roller. A fixed plate is provided on the inner surface of the base frame. The fixed plate is rotatably connected to one end of the drying roller. A partition plate is provided on the surface of the fixed plate. A pair of steam pipes are connected between the surface of the fixed plate and the base frame.
[0012] As a further technical solution, the steam pipe is connected to the inside of the drying roller, an external gear is provided on the side surface of the drying roller, a drive motor is provided on the surface of the base frame, and a drive gear is provided at the output end of the drive motor.
[0013] As a further technical solution, the drive gear meshes with the external gear, the bottom of the material box is provided with a bonding cover, the bonding cover slides against the surface of the drying roller, and the upper end face of the bonding cover is provided with an extrusion port.
[0014] As a further technical solution, the primary drying assembly includes several heat-conducting chamber plates, which are respectively fixed on both sides inside the material box, with one end of each heat-conducting chamber plate located outside the material box.
[0015] As a further technical solution, a connecting pipe is provided between adjacent heat-conducting cavity plates, wherein an access pipe is provided on the side end face of a pair of heat-conducting cavity plates, and a dispersion cover is provided on the top of the material box.
[0016] As a further technical solution, the scraping assembly includes a blade holder, which is fixed to the inner surface of the base frame. A scraper is inserted into the blade holder and fixedly connected to the blade holder by bolts.
[0017] As a further technical solution, both opposite ends of the partition plate are slidably fitted to the inner wall of the cavity, and a large gap is left between one end of the partition plate and the inner surface of the cavity.
[0018] As a further technical solution, the heat-conducting cavity plate is fixedly connected at an inclined angle.
[0019] As a further technical solution, the connection between the fixed disk and the drying roller is a sealed and fitted connection.
[0020] The beneficial effects of the embodiments disclosed herein are as follows:
[0021] 1. In this disclosure, the primary drying component, the heat-conducting chamber plate, together with the connecting pipe and the inlet pipe, uses steam to generate heat. The inclined heat-conducting chamber plate design facilitates the material to slide down, and the dispersion hood makes the material evenly distributed on the heat-conducting chamber plate to achieve preliminary drying. It can effectively remove most of the moisture from the material, reduce the burden on subsequent drying, improve the overall drying efficiency, and also prevent the material from deteriorating due to local overheating in the initial drying stage.
[0022] 2. In this disclosure, a rolling drying assembly is provided. Steam circulates and heats the drying roller inside the cavity. The drive motor drives the drying roller to rotate, so that the material forms a thin film on the surface of the drying roller, which increases the contact area between the material and the hot air, accelerates the drying process, and the sealed connection between the fixed plate and the drying roller prevents steam leakage, ensuring the stability of the drying process and the effective use of energy, thereby improving the drying effect and energy utilization rate.
[0023] 3. In this disclosure, a scraping component is provided. The combination structure of the blade holder and the scraper is simple and easy to install and replace. After the material is dried, the material on the surface of the drying roller can be scraped off in time, avoiding material residue from affecting the subsequent operation of the equipment, ensuring the continuous and stable operation of the equipment, and improving production efficiency. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0025] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;
[0026] Figure 2 This is an isometric drawing of the present disclosure;
[0027] Figure 3 This is an isometric sectional view of the present disclosure;
[0028] Figure 4 This is another isometric sectional view of this disclosure;
[0029] Figure 5 This is a cross-sectional view of the present disclosure;
[0030] In the diagram: 1. Base frame; 2. Drying roller; 3. Material box; 4. Rolling drying assembly; 4-1. Cavity; 4-2. Fixed plate; 4-3. Divider plate; 4-4. Steam pipe; 4-5. External gear; 4-6. Drive motor; 4-7. Drive gear; 4-8. Adhesion cover; 4-9. Extrusion port; 5. Primary drying assembly; 5-1. Heat-conducting chamber plate; 5-2. Inlet pipe; 5-3. Dispersion cover; 5-4. Connecting pipe; 6. Scraping assembly; 6-1. Knife holder; 6-2. Scraper. Detailed Implementation
[0031] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0032] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0033] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0034] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0037] like Figures 1-5 As shown, it illustrates a two-stage MVR scraper dryer according to an embodiment of the present disclosure, comprising:
[0038] The base frame 1, the drying roller 2, and the material box 3 are rotatably connected in the base frame 1, and the material box 3 is fixed on the surface of the base frame 1.
[0039] Primary drying component 5 is located inside the material box 3;
[0040] The rolling drying assembly 4 is disposed between the drying roller 2 and the material box 3;
[0041] Scraping component 6 is disposed on the surface of the base frame 1;
[0042] The rolling drying assembly 4 includes a cavity 4-1, which is located inside the drying roller 2. A fixed plate 4-2 is provided on the inner surface of the base frame 1. The fixed plate 4-2 is rotatably connected to one end of the drying roller 2. A partition plate 4-3 is provided on the surface of the fixed plate 4-2. A pair of steam pipes 4-4 are connected between the surface of the fixed plate 4-2 and the base frame 1. The two steam pipes 4-4 are used for steam inlet and steam outlet, respectively. The steam pipes 4-4 are connected to the inside of the drying roller 2. An external gear 4-5 is provided on the side surface of the drying roller 2. A drive motor 4-6 is provided on the surface of the base frame 1. A drive gear 4-7 is provided at the output end of the drive motor 4-6. The drive gear 4-7 meshes with the external gear 4-5. A bonding cover 4-8 is provided at the bottom of the material box 3. The bonding cover 4-8 slides and adheres to the surface of the drying roller 2. An extrusion port 4-9 is provided on the upper surface of the bonding cover 4-8.
[0043] In some examples, to achieve the effect of rolling drying, a rolling drying assembly 4 is designed, including a cavity 4-1, which is opened inside the drying roller 2. A fixed plate 4-2 is provided on the inner surface of the base frame 1. The fixed plate 4-2 is rotatably connected to one end of the drying roller 2. A partition plate 4-3 is provided on the surface of the fixed plate 4-2 and is located in the cavity 4-1, which can divide the interior into two areas. A pair of steam pipes 4-4 connected to the interior of the drying roller 2 are connected between the surface of the fixed plate 4-2 and the base frame 1. An external gear 4-5 is provided on the side surface of the drying roller 2. The output end of the drive motor 4-6 on the surface of the base frame 1 is provided with a drive gear 4-7 that meshes with the external gear 4-5 and can control the rotation of the drying roller 2. A bonding cover 4-8 is provided at the bottom of the material box 3 and slides against the surface of the drying roller 2. An extrusion port 4-9 is opened on the upper surface of the bonding cover 4-8. The material at the extrusion port 4-9 can be carried out with the rolling of the drying roller 2 to form a film.
[0044] like Figures 1-5 As shown, this embodiment proposes a primary drying assembly 5, which includes several heat-conducting chamber plates 5-1. The heat-conducting chamber plates 5-1 are fixed on both sides inside the material box 3. One end of the heat-conducting chamber plate 5-1 is located outside the material box 3. A connecting pipe 5-4 connects adjacent heat-conducting chamber plates 5-1. An access pipe 5-2 is provided on the side end face of a pair of heat-conducting chamber plates 5-1. A dispersion cover 5-3 is provided on the top of the material box 3.
[0045] In some examples, a primary drying assembly 5 is designed to achieve the effect of primary drying, including several heat-conducting chamber plates 5-1. The heat-conducting chamber plates 5-1 are fixed on both sides inside the material box 3, and one end of the heat-conducting chamber plate 5-1 extends to the outside of the material box 3. Adjacent heat-conducting chamber plates 5-1 are connected to each other through connecting pipes 5-4. One pair of heat-conducting chamber plates 5-1 is provided with an inlet pipe 5-2 on its side end face for introducing steam, which can generate heat in the heat-conducting chamber plates 5-1. A dispersion cover 5-3 is also provided on the top of the material box 3. The dispersion cover 5-3 can let the material fall onto the surface of the heat-conducting chamber plates 5-1 and perform preliminary drying during the downward flow.
[0046] like Figures 1-5 As shown, this embodiment proposes a scraping assembly 6 including a blade holder 6-1, which is fixed on the inner surface of the base frame 1. A scraper 6-2 is inserted into the blade holder 6-1 and is fixedly connected to the blade holder 6-1 by bolts.
[0047] In some examples, a scraping assembly 6 is designed to facilitate the replacement of the scraper 6-2. A blade holder 6-1 is provided on the surface of the base frame 1, and the scraper 6-2 is mounted on the blade holder 6-1 and fixedly connected by bolts.
[0048] For example, such as Figure 3 As shown, both ends of the partition plate 4-3 are slidably attached to the inner wall of the cavity 4-1, and a large gap is left between one end of the partition plate 4-3 and the inner surface of the cavity 4-1.
[0049] In some examples, by dividing the area into two regions with a larger interval, a loop can be formed inside.
[0050] For example, such as Figure 4 As shown, the heat-conducting cavity plate 5-1 is fixedly connected at an inclined angle.
[0051] In some examples, by tilting the angle, the material can be slid outwards on the surface.
[0052] For example, such as Figure 3 As shown, the connection between the fixed disk 4-2 and the drying roller 2 is a sealed and fitted connection.
[0053] In some examples, a sealed fit is used to prevent steam leakage during rotation.
[0054] In actual use: The material to be dried is fed into the material box 3 through the dispersion cover 5-3, and steam is connected through the connection pipe 5-2. The steam flows between the heat-conducting chamber plates 5-1 through the connecting pipe 5-4, so that the heat-conducting chamber plates 5-1 generate heat to preliminarily dry the material. The material slides down on the inclined heat-conducting chamber plates 5-1. At the same time, the drive motor 4-6 starts, and the drive gear 4-7 drives the external gear 4-5 of the drying roller 2 to rotate the drying roller 2. The steam enters the internal cavity 4-1 of the drying roller 2 through the steam pipe 4-4 and forms a circulation in the cavity 4-1 under the action of the partition plate 4-3, further drying the material on the surface of the drying roller 2. The material at the extrusion port 4-9 of the bottom of the material box 3, which is attached to the cover 4-8, forms a film as the drying roller 2 rotates, which accelerates the drying. After drying, the material on the surface of the drying roller 2 is scraped off by the scraper 6-2 of the scraping component 6.
[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A two-stage MVR flighted dryer characterized by, Include: The chassis (1), drying roller (2) and material box (3), the drying roller (2) is rotatably connected in the chassis (1), the material box (3) is fixed on the surface of the chassis (1); Primary drying assembly (5), the primary drying assembly (5) is arranged inside the material box (3); Rolling drying assembly (4), the rolling drying assembly (4) is arranged between the drying roller (2) and the material box (3); Scraping assembly (6), the scraping assembly (6) is arranged on the surface of the chassis (1); The rolling drying assembly (4) includes a cavity (4-1), the cavity (4-1) is opened in the drying roller (2), the inside surface of the chassis (1) is provided with a fixed disc (4-2), the fixed disc (4-2) is rotatably connected at one end of the drying roller (2), the surface of the fixed disc (4-2) is provided with a partition plate (4-3), a pair of steam pipes (4-4) is connected between the surface of the fixed disc (4-2) and the chassis (1).
2. A two-stage MVR scraped surface dryer according to claim 1, wherein, The steam pipe (4-4) is communicated with the inside of the drying roller (2), the side surface of the drying roller (2) is provided with an external gear (4-5), the surface of the chassis (1) is provided with a driving motor (4-6), the output end of the driving motor (4-6) is provided with a driving gear (4-7).
3. A two-stage MVR scraped surface dryer according to claim 2, wherein, The driving gear (4-7) is engaged with the external gear (4-5), the bottom of the material box (3) is provided with a fitting cover (4-8), the fitting cover (4-8) is slidingly fitted on the surface of the drying roller (2), the upper end surface of the fitting cover (4-8) is provided with an extrusion port (4-9).
4. A two-stage MVR scraped surface dryer according to claim 1, wherein, The primary drying assembly (5) includes a plurality of heat-conducting cavity plates (5-1), the heat-conducting cavity plates (5-1) are respectively fixed on the inside of the material box (3), one end of the heat-conducting cavity plate (5-1) is located outside the material box (3).
5. A two-stage MVR scraped surface dryer according to claim 4, wherein, The adjacent heat-conducting cavity plates (5-1) are connected with a communication pipe (5-4), one pair of side end surfaces of the heat-conducting cavity plates (5-1) are provided with an access pipe (5-2), the top of the material box (3) is provided with a dispersion cover (5-3).
6. A two-stage MVR scraped surface dryer according to claim 1, wherein, The scraping assembly (6) includes a knife holder (6-1), the knife holder (6-1) is fixed on the inner surface of the chassis (1), a scraper (6-2) is connected in the knife holder (6-1), the scraper (6-2) is fixedly connected with the knife holder (6-1) through bolts.
7. A two-stage MVR scraped surface dryer according to claim 1, wherein, The opposite end surfaces of the partition plate (4-3) are slidingly fitted with the inner wall of the cavity (4-1), and a gap is left between one end of the partition plate (4-3) and the inside surface of the cavity (4-1).
8. A two-stage MVR scraped surface dryer according to claim 4, wherein, The heat-conducting cavity plate (5-1) is fixedly connected at an inclined angle.
9. A two-stage MVR scraped surface dryer according to claim 1, wherein, The fixed disc (4-2) is sealingly and fittingly connected with the drying roller (2).