阅读说明：本技术 一种刮板式换热器 (Scraper type heat exchanger ) 是由 黎泽荣 于 2020-07-15 设计创作，主要内容包括：一种刮板式换热器,包括机架、物料筒、夹层、由动力带动转动的转轴、由转轴带动的数块刮板,其特征在于物料筒竖向垂直设置,物料筒上部两边对称设置有轴,对应轴的机架上设置有带有轴承的轴承座,物料筒内的转轴上下两端固定有架子,沿转轴四周设置有数根固定在架子上的细轴,刮板摆动连接在细轴上。本发明与已有技术相比,具有换热顺畅的同时,维护方便,且刮板即使在使用过程中磨损,也能保证其紧靠物料筒壁,以保证顺畅地刮落粘附在物料筒内侧壁上物料的优点。(The utility model provides a scrape board-like heat exchanger, includes frame, material section of thick bamboo, intermediate layer, drives pivoted pivot, several scrapers by the pivot drive, the vertical perpendicular setting of its characterized in that material section of thick bamboo, material section of thick bamboo upper portion both sides symmetry is provided with the axle, is provided with the bearing frame that has the bearing in the frame of corresponding axle, and both ends are fixed with the shelf about the pivot in the material section of thick bamboo, are provided with several thin axles of fixing on the shelf all around along the pivot, and the scraper blade swing is connected on thin epaxially. Compared with the prior art, the invention has the advantages of smooth heat exchange and convenient maintenance, and the scraper can ensure that the scraper is close to the wall of the material barrel even if the scraper is worn in the use process, so as to ensure that the material adhered on the inner side wall of the material barrel is smoothly scraped.)

1. A scraper type heat exchanger comprises a frame, a material cylinder arranged on the frame, an interlayer arranged on the outer side wall of the material cylinder, a rotating shaft driven by power to rotate and penetrate through the axis of the material cylinder, and a plurality of scrapers driven by the rotating shaft, and is characterized in that the material cylinder is vertically arranged, shafts are symmetrically arranged on two sides of the upper part of the material cylinder, a bearing seat with a bearing is arranged on the frame corresponding to the shafts, the shafts are rotatably connected in the bearings on the bearing seat of the frame, frames are fixed at the upper end and the lower end of the rotating shaft in the material cylinder, a plurality of thin shafts fixed on the frames are arranged around the rotating shaft, the scrapers are connected on the thin shafts in a swinging manner, the distance from the swinging axis of the scraper to the scraping edge of the scraper is larger than the shortest distance from the rotating axis of the scraper to the wall of the material cylinder, the scraper leans against the wall of the material cylinder, the position of, the scraper is abutted against the wall of the material cylinder under the action of the material.

2. The scraped surface heat exchanger of claim 1 wherein there are several scraper groups along the axis of the rotating shaft, each scraper group consisting of several scrapers threaded onto the corresponding thin shaft.

3. The scraped surface heat exchanger of claim 1 or 2, characterized in that the scraping edge of each scraper is provided with square notches at intervals, the square notches of adjacent scrapers of the same scraper group are staggered, and the width of each scraping edge is greater than the width of the square notch.

4. The scraped-surface heat exchanger according to claim 1 or 2, wherein the free end surface of the scraper is a bevel, one end of the bevel is a scraping edge, and the other end of the bevel is spaced from the axis of rotation of the scraper by a distance not less than the distance between the axes of rotation of two adjacent scrapers.

5. The scraped-surface heat exchanger of claim 3, wherein the free end surfaces of the scrapers are beveled surfaces, one end of the beveled surface is a scraping edge, and the other end of the beveled surface is spaced from the axis of rotation of the scraper by a distance not less than the distance between the axes of rotation of two adjacent scrapers.

The technical field is as follows:

the present invention relates to a heat exchange technique.

Background art:

as shown in fig. 7, the existing scraper heat exchanger includes a material cylinder 1, an interlayer 2 disposed on the outer side wall of the material cylinder 1, a rotating shaft 6 driven by power to rotate and connected to the axis of the material cylinder 1 through a shaft seal 3, and a plurality of scrapers 5 fixed on the rotating shaft 6 through a fixed connection structure 4, wherein the plurality of scrapers are distributed along the axis of the rotating shaft and lean against the wall of the material cylinder. During operation, the material is imported into from one end of the material barrel and is exported from the other end of the material barrel, and the heat exchange medium is imported from one end of the interlayer and is exported from the other end of the interlayer to exchange heat with the material in the material barrel. The heat exchanger is generally large in size, and if the heat exchanger is horizontally arranged, the heat exchanger is prone to uneven heat exchange due to the fact that materials are accumulated below a material barrel under the action of gravity; if the vertical type heat exchanger is arranged vertically, the problem of uniform heat exchange is solved, but the rotating shaft and the scraper are not easy to take out, so that the daily maintenance is inconvenient. In addition, after the scraper blade is used for a period of time, the function of the scraper blade is obviously reduced due to abrasion, so that the material adhered to the inner side wall of the material barrel is effectively scraped, and the smooth proceeding of heat exchange is influenced.

The invention content is as follows:

the invention aims to provide a scraper type heat exchanger which is smooth in heat exchange and convenient to maintain, and can ensure that a scraper can be tightly close to the wall of a material barrel even if the scraper is worn in the using process so as to ensure that materials adhered to the inner side wall of the material barrel are smoothly scraped.

The invention is realized by the following steps that the device comprises a frame, a material cylinder arranged on the frame, an interlayer arranged on the outer side wall of the material cylinder, a rotating shaft which is driven by power to rotate and is connected with the axis of the material cylinder in a penetrating way, and a plurality of scraping plates driven by the rotating shaft, and is characterized in that the material cylinder is vertically arranged, two sides of the upper part of the material cylinder are symmetrically provided with shafts, a bearing seat with a bearing is arranged on the frame corresponding to the shafts, the shafts are rotatably connected in the bearings on the bearing seat of the frame, frames are fixed at the upper end and the lower end of the rotating shaft in the material cylinder, a plurality of thin shafts fixed on the frames are arranged along the periphery of the rotating shaft, the scraping plates are connected on the thin shafts in a swinging way, the distance from the swinging axis of the scraping plates to the scraping edges of the scraping plates is larger than the shortest distance from the rotating axis of the scraping plates to the wall, the scraper is abutted against the wall of the material cylinder under the action of the material.

During heat exchange, a material enters from a feed inlet at the lower part of the material barrel and flows out from an outlet at the upper part of the material barrel, a heat exchange heating medium enters from the upper part of the interlayer and flows out from the lower part of the interlayer to heat or cool the material, in the process, the rotating shaft rotates under the driving of power to drive the scraper to continuously scrape and clean the material barrel wall, because the scraper rotates against the material, the scraper is close to the material barrel wall under the pushing of the material, thereby ensuring that the scraper effectively scrapes and cleans the material attached to the material barrel wall, because the distance between the swinging axis of the scraper and the scraping edge of the scraper is greater than the shortest distance between the rotating axis of the scraper and the material barrel wall, in the long-time use process, even if the scraping edge of the scraper is abraded, the abrasion of the scraping edge is generally synchronous and uniform, and the scraper keeps close to the material barrel wall under the action of the material, therefore, the scraper can continuously maintain the efficiency; the material barrel adopts vertical setting, guarantees that the material heat transfer is even, and then guarantees the quality of material heat transfer, adopts axle and bearing frame cooperation to set up in the frame, like this, when maintaining, can follow the whole swing material barrel of bearing, makes the material barrel be the level and places, like this, maintainer just takes out the pivot from the material barrel together with components such as scraper blade very conveniently to the maintenance has been made things convenient for.

Compared with the prior art, the invention has the advantages of smooth heat exchange and convenient maintenance, and the scraper can ensure that the scraper is close to the wall of the material barrel even if the scraper is worn in the use process, so as to ensure that the material adhered on the inner side wall of the material barrel is smoothly scraped.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

figure 2 is a cross-sectional view of a portion of the material cartridge of the present invention;

FIG. 3 is a schematic view of the structure of the material barrel of the present invention swinging horizontally;

FIG. 4 is a cross-sectional view of FIG. 2D-D;

FIG. 5 is a schematic view of the construction of the blade b of FIG. 4;

FIG. 6 is a schematic view of the construction of the d blade of FIG. 4;

fig. 7 is a schematic structural diagram of the prior art.

The specific implementation mode is as follows:

the invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in figures 1, 2 and 4, the invention is realized by the following steps that the device comprises a frame 1, a material cylinder 2 arranged on the frame 1, an interlayer 3 arranged on the outer side wall of the material cylinder 2, a rotating shaft 5 driven by a power 4 (comprising a motor, a gear box and a coupling) and rotatably connected on the axis of the material cylinder 2 in a penetrating way, and a plurality of scraping plates 6 driven by the rotating shaft 5, wherein the interlayer 3 is externally wrapped by a heat insulation layer 7, the device is characterized in that the material cylinder 2 is vertically arranged, shafts 8 are symmetrically arranged on two sides of the upper part of the material cylinder 2, the shafts 8 are fixedly connected on the outer side wall of the interlayer 3, a bearing seat 9 with a bearing is arranged on the frame 1 corresponding to the shafts 8, the shafts 8 are rotatably connected in the bearing on the bearing seat 9 of the frame 1, frames 10 are fixed at the upper end and the lower end of the rotating shaft 5 in the material cylinder, as shown in fig. 4, the distance B between the swing axis a of the scraper 6 and the scraping edge 6a of the scraper 6 is greater than the shortest distance C (i.e. the vertical distance) between the rotation axis a of the scraper 6 and the material cylinder wall 2a, so that the scraper 6 is inclined against the material cylinder wall 2a, and the position of the scraper 6 is set such that the scraper 6 abuts against the material cylinder wall 2a under the action of the material when the scraper 6 rotates along with the rotation shaft 5 against the material in the material cylinder 2.

As shown in fig. 4, 5 and 6, a plurality of scraper groups a are arranged along the axis of the rotating shaft, and each scraper group a is composed of a plurality of scrapers 6 which are connected on the corresponding thin shaft 11 in a penetrating way. Adopt several layers of scraping plate group a, existing the making of being favorable to, simultaneously, owing to scrape the length of sword 6a and shorten to avoid leading to whole section to scrape sword 6a and can not all tightly lean on material section of thick bamboo wall 2a effectively because of scraping the sword 6a deformation of scraper blade 6, in order to guarantee to scrape the effect of getting the material. The scraping edges 6a of each scraper 6 are provided with square notches 6b at intervals, the square notches 6b of the adjacent scrapers 6 of the same scraper group a are arranged in a staggered mode, and the width of each section of the scraping edge 6a is larger than that of each square notch 6 b. Because the width of each section of scraping edge 6a is small, the scraping edges 6a are easy to be ensured to be tightly close to the material cylinder wall 2a, and the square notches 6b of the adjacent scraping plates 6 are arranged in a staggered mode, so that the material cylinder wall 2a can be scraped by the scraping plates 6.

During heat exchange, a material enters from a feed inlet 12 at the lower part of the material barrel 2 and flows out from an outlet 13 at the upper part of the material barrel 2, a heat exchange heat medium enters from an inlet 14 at the upper part of the interlayer 3 and flows out from an outlet 15 at the lower part of the interlayer 3 to heat or cool the material, in the process, the rotating shaft 5 is driven by the power 4 to rotate to drive the scraper 6 to continuously scrape and clean the material barrel wall 2a, and the scraper 6 rotates against the material, so that the scraper 6 is tightly close to the material barrel wall 2a under the pushing of the material, thereby ensuring that the scraper 6 effectively scrapes and cleans the material attached to the material barrel wall 2a, and as the distance B between the swing axis A of the scraper 6 and the scraping edge 6a of the scraper 6 is greater than the shortest distance C between the rotation axis A of the scraper 6 and the material barrel wall 2a, even if the scraping edge 6a of the scraper 6 is worn out in the long, because the abrasion of the scraping edge 6a is synchronous and uniform, and the scraping plate 6 keeps close to the material cylinder wall 2a under the action of the material, the efficiency of the scraping plate 6 can be continuously maintained; the material barrel 2 is vertically arranged, so that the material heat exchange is uniform, the quality of the material heat exchange is further guaranteed, the shaft 8 and the bearing seat 9 are arranged on the rack 1 in a matched mode, and therefore, as shown in figure 3, the material barrel 2 can be swung integrally along the bearing during maintenance, the material barrel 2 is horizontally placed, and therefore maintenance personnel can conveniently take out the rotating shaft 5 together with components such as the scraper 6 from the material barrel 2, and maintenance is facilitated.

As shown in fig. 2, partitions 16 are provided at intervals in the direction of the axis in the heat exchanger 3 to divide the heat exchanger 3 into serpentine channels, so as to improve the heat exchange effect of the heat exchange medium.

Here, the free end surface of the scraper 6 is a slope, one end of the slope is a scraping edge 6a, and the distance E from the other end of the slope to the rotation axis a of the scraper 6 is not less than the distance F between the rotation axes a of two adjacent scrapers 6. Therefore, the rotating shaft 5 is driven by the power 4 to rotate, when the scraper 6 rotates towards the material in the material barrel 2, the free end face of the scraper 6 always faces the material, so that the free end face of the scraper 6 is always close to the inner side wall of the material barrel 2 under the pushing of the material, and the material attached to the inner side wall of the material barrel 2 is hung down.