CN105004167A - Heat pump type counter-flow dryer utilizing tail gas heat - Google Patents
Heat pump type counter-flow dryer utilizing tail gas heat Download PDFInfo
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- CN105004167A CN105004167A CN201510496278.7A CN201510496278A CN105004167A CN 105004167 A CN105004167 A CN 105004167A CN 201510496278 A CN201510496278 A CN 201510496278A CN 105004167 A CN105004167 A CN 105004167A
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- 239000000428 dust Substances 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract description 11
- 230000000149 penetrating effect Effects 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
本发明公开了一种热泵式尾热利用逆流烘干机，烘干机的抽风罩连接引风机，引风机经旋风除尘器连接热泵系统的蒸发器后排空；热泵系统的蒸发器经冷媒管连接主机，主机经冷媒管连接冷凝器；鼓风机的出气端经冷凝器连接入风罩；所述引风机叶轮具有叶片为中空楔形的结构；引风机外形轮廓线是渐开线。本发明通过引风机、换热器以及在筛板钢带下方设置封闭的锥斗，锥斗内设置轴流风扇，实现了物料的穿透式逆流低温烘干且热泵系统特别适合低温尾气的热量回收；叶片为中空楔形的结构实现了引风机叶轮上灰尘的实时清理并增大了风机的叶轮强度，增强了稳定性并有效杜绝灰尘积累引发的安全事故，应用前景广阔。
The invention discloses a heat pump type tail heat utilization countercurrent dryer. The exhaust hood of the dryer is connected to an induced draft fan, and the induced draft fan is connected to the evaporator of the heat pump system through a cyclone dust collector and then emptied; the evaporator of the heat pump system passes through a refrigerant pipe Connected to the host, the host is connected to the condenser through the refrigerant pipe; the air outlet end of the blower is connected to the air inlet hood through the condenser; the impeller of the induced draft fan has a hollow wedge-shaped structure; the contour line of the induced draft fan is an involute. The invention realizes the penetrating countercurrent low-temperature drying of the material through the induced draft fan, the heat exchanger and the closed cone bucket under the steel belt of the sieve plate, and the axial flow fan is arranged in the cone bucket, and the heat pump system is especially suitable for the heat of the low-temperature exhaust gas Recycling; the blade is a hollow wedge-shaped structure, which realizes the real-time cleaning of dust on the impeller of the induced draft fan, increases the strength of the impeller of the fan, enhances the stability and effectively prevents safety accidents caused by dust accumulation, and has broad application prospects.
Description
技术领域 technical field
本发明涉及一种烘干机，具体指引风机不会积尘的热泵式尾热利用逆流烘干机。 The invention relates to a dryer, in particular to a heat pump tail heat utilization countercurrent dryer which does not accumulate dust in a fan.
背景技术 Background technique
人们一般将干燥温度低于60摄氏度的干燥成为低温干燥，低温干燥广泛应用于作物种子、中药材、生物制品等热敏性物料的干燥。热风式烘干机由于技术成熟、适应能力强、运行费用低、可靠性强，仍然是低温干燥的首选设备之一。低温干燥由于尾气排放温度较低，因而更不容易进行尾热利用。如果能在热风式低温干燥过程中实现对物料的穿透和逆流烘干，并对尾热进行有效回收，则对于提高干燥效率和实现节能减排都具有特别重要的意义。 People generally refer to drying with a drying temperature below 60 degrees Celsius as low-temperature drying. Low-temperature drying is widely used in the drying of heat-sensitive materials such as crop seeds, Chinese medicinal materials, and biological products. Due to its mature technology, strong adaptability, low operating cost and high reliability, hot air dryer is still one of the first choice equipment for low temperature drying. Low-temperature drying is less likely to utilize tail heat due to the lower temperature of exhaust gas. If the penetration and countercurrent drying of materials can be realized in the hot-air low-temperature drying process, and the tail heat can be effectively recovered, it will be of great significance for improving drying efficiency and realizing energy saving and emission reduction.
引风机是热风式干燥机的关键设备，引风机一般为离心风机，引风机的连续、稳定、可靠工作对烘干机十分关键，由于烘干机使用的场合大多都含有一定的粉尘，引风机工作时，气流通过高速旋转的风机叶轮时由于离心分离作用，灰尘颗粒会脱离气流相而沉积附着在风机叶轮上。 The induced draft fan is the key equipment of the hot air dryer. The induced draft fan is generally a centrifugal fan. The continuous, stable and reliable operation of the induced draft fan is very important for the dryer. Since most of the occasions where the dryer is used contain a certain amount of dust, the induced draft fan When working, when the airflow passes through the high-speed rotating fan impeller, due to the centrifugal separation, the dust particles will separate from the airflow phase and deposit on the fan impeller.
由于引风机叶轮转速一般都较高，只要气流中有微量灰尘存在，长时间工作后都会积累较多灰尘，从而改变引风机叶轮旋转的平衡，如果引风机叶轮对灰尘没有自净作用也没有及时清理，就会越积越多并逐步改变引风机叶轮的静态和动态平衡，从而产生振动。一旦遇到有部分板结的灰尘被振动脱落，就会立即远离引风机的动态旋转平衡，继而产生强烈振动，这可能会引发严重的人员和设备安全事故。 Since the impeller speed of the induced draft fan is generally high, as long as there is a small amount of dust in the airflow, more dust will accumulate after a long time of work, thereby changing the balance of the impeller rotation of the induced draft fan. , it will accumulate more and gradually change the static and dynamic balance of the induced draft fan impeller, resulting in vibration. Once the partly hardened dust is shaken off, it will immediately leave the dynamic rotation balance of the induced draft fan, and then generate strong vibration, which may cause serious personnel and equipment safety accidents.
因此，如果能设计一种离心式引风机叶轮，使其能进行自动清理就不用担心造成灰尘积累，对于保持引风机的稳定可靠工作和杜绝安全事故都具有特别重要的意义。 Therefore, if a centrifugal induced draft fan impeller can be designed so that it can be cleaned automatically, there is no need to worry about dust accumulation, which is of great significance for maintaining the stable and reliable operation of the induced draft fan and preventing safety accidents.
发明内容 Contents of the invention
本发明要解决的技术问题就是克服现有技术的不足，提供一种结构简单实用，能自动清理引风机叶轮上灰尘的热泵式尾热利用逆流烘干机。 The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a heat pump tail heat utilization countercurrent dryer with a simple and practical structure that can automatically clean the dust on the impeller of the induced draft fan.
为克服现有技术的不足，本发明采取以下技术方案： In order to overcome the deficiencies in the prior art, the present invention takes the following technical solutions:
一种热泵式尾热利用逆流烘干机，包括烘干机和引风机，其特征在于；烘干机两端分别设有抽风罩和入风罩，抽风罩连接引风机，引风机经旋风除尘器连接热泵系统的蒸发器后排空；热泵系统的蒸发器经冷媒管连接主机，主机经冷媒管连接冷凝器；鼓风机的出气端经冷凝器连接入风罩；所述引风机包括风机叶轮和机壳，风机叶轮包括叶轮背板、叶轮面板和叶片，叶片布置成叶轮轴径向、中心对称的中空楔形；中空楔形叶片连接叶轮面板并与叶轮背板焊接组成叶轮主体；叶轮面板设有进风口、叶轮背板通过铆钉固定并连接轴座，轴座通过轴孔与风机轴进行配合连接；机壳设有进风口和出风口，机壳外形轮廓线是渐开线，渐开线圆圆心与风机轴心重合，渐开线从机壳出风口内侧开始，划线半径随渐开线圆逐渐加大，到机壳出风口外侧结束，机壳出风口宽度等于渐开线圆周长；机壳进风口设有盖板，盖板上也有进风口便于连接管道，且轴心和叶轮轴心重合。 A heat pump type tail heat utilization countercurrent dryer, comprising a dryer and an induced draft fan, characterized in that: the two ends of the dryer are respectively provided with an exhaust hood and an air inlet hood, the exhaust hood is connected to the induced draft fan, and the induced draft fan is dedusted by cyclone The evaporator of the heat pump system is connected to the evaporator and then emptied; the evaporator of the heat pump system is connected to the main engine through the refrigerant pipe, and the main engine is connected to the condenser through the refrigerant pipe; the air outlet end of the blower is connected to the air inlet hood through the condenser; the induced draft fan includes fan impeller and The casing and the fan impeller include the impeller back plate, impeller panel and blades. The blades are arranged in a hollow wedge shape that is radial to the impeller axis and symmetrical to the center; the hollow wedge-shaped blades are connected to the impeller panel and welded with the impeller back plate to form the impeller body; The tuyere and the back plate of the impeller are fixed by rivets and connected to the shaft seat, and the shaft seat is connected with the fan shaft through the shaft hole; the casing is equipped with an air inlet and an air outlet, and the outline of the casing is an involute, and the center of the involute circle Coincident with the axis of the fan, the involute starts from the inner side of the air outlet of the casing, the radius of the line increases gradually with the involute circle, and ends outside the air outlet of the casing, and the width of the air outlet of the casing is equal to the circumference of the involute circle; The shell air inlet is provided with a cover plate, and there is also an air inlet on the cover plate to facilitate the connection of pipes, and the axis coincides with the axis of the impeller.
所述烘干机内有主动辊和从动辊带动筛板钢带穿过，筛板钢带下方设有封闭的锥斗，锥斗内设有轴流风扇。开启轴流风扇后，气流能强制穿过筛板钢带及其上方的物料，实现穿透式逆流干燥。 There are driving rollers and driven rollers in the dryer to drive the steel belt of the sieve plate to pass through, and a closed cone bucket is arranged under the steel belt of the screen plate, and an axial flow fan is arranged in the cone bucket. After the axial flow fan is turned on, the airflow can be forced to pass through the steel belt of the sieve plate and the material above it to realize penetrating countercurrent drying.
所述筛板钢带两端分别设有进料斗和出料斗，实现连续化的进料干燥。 The two ends of the sieve plate steel belt are respectively provided with a feed hopper and a discharge hopper to realize continuous feed drying.
所述机壳固定在机座上。机壳起到封闭作用，进风口进气通过叶轮旋转获得动能，并在机壳内进行能量转换，一部分动能转换为气体的静压能，这样使输出气流具有速度动压头还有静压头，两者之和就是风机全压。 The casing is fixed on the base. The casing acts as a seal, and the intake air at the air inlet obtains kinetic energy through the rotation of the impeller, and the energy is converted in the casing, and a part of the kinetic energy is converted into the static pressure energy of the gas, so that the output airflow has a velocity dynamic pressure head and a static pressure head , the sum of the two is the total pressure of the fan.
机壳进风口可以依需要连接风管，进风口盖板可拆卸，通过螺栓固定连接机壳，机壳的蜗壳形渐开廓线满足风机壳密闭、输送气体同时实现能量高效转换的需要，使输出气流可以达到所需流量与全压。 The air inlet of the casing can be connected to the air duct as required, and the cover plate of the air inlet is detachable, and is connected to the casing by bolts. The volute-shaped involute profile of the casing meets the needs of airtight fan casing and efficient energy conversion while transporting gas. , so that the output airflow can reach the required flow rate and full pressure.
所述机壳进风口盖板通过螺栓固定连接机壳，并且可以拆卸。 The casing air inlet cover plate is fixedly connected to the casing by bolts and can be disassembled.
设备工作时，由进料斗进行均匀供料，随筛板钢带穿过烘干机内部，开启轴流风扇后，由于锥斗的封闭作用，气流能够强制穿过筛板钢带及其上方的物料，进行穿透式逆流干燥；抽风罩连接引风机进气口，将湿热尾气旋风除尘后引入翅片蒸发器完成尾热利用，经过热泵主机工作，通过冷媒管输送冷媒在翅片冷凝器内释放热量，鼓风机鼓入的空气在翅片冷凝器上换热升温后，通过入风罩进入烘干机，完成穿透式逆流烘干与尾热利用。 When the equipment is working, the material is fed evenly by the feeding hopper, and the steel belt of the sieve plate passes through the inside of the dryer. After the axial flow fan is turned on, due to the sealing effect of the cone bucket, the airflow can be forced to pass through the steel belt of the sieve plate and above it. The raw materials are dried through penetrating countercurrent; the exhaust hood is connected to the air inlet of the induced draft fan, and the hot and humid tail gas is cyclone-dusted and introduced into the fin evaporator to complete the tail heat utilization. After the heat pump host works, the refrigerant is transported through the refrigerant pipe to the fin condenser The heat is released inside, and the air blown in by the blower exchanges heat on the finned condenser and then enters the dryer through the air inlet hood to complete the penetrating countercurrent drying and tail heat utilization.
本发明的引风机叶轮使用时，由于叶片设计成中空楔形，且叶片轴径向中心对称，因而高速旋转时，叶片表面在离心力作用下具有离心自净作用，使灰尘受到离心力作用而无法附着，这样就不会影响叶轮的动态、静态平衡，更不会积累灰尘；这种叶片结构的技术方案，特别适合输送气流量大的宽叶轮引风机采用。 When the induced draft fan impeller of the present invention is used, because the blade is designed to be hollow wedge-shaped, and the blade shaft is symmetrical to the center of the radial direction, when rotating at high speed, the surface of the blade has a centrifugal self-cleaning effect under the centrifugal force, so that the dust cannot be attached due to the centrifugal force. It will not affect the dynamic and static balance of the impeller, and will not accumulate dust; this technical scheme of the blade structure is especially suitable for the wide-impeller induced draft fan with a large air flow.
与现有技术相比，本发明的有益效果还在于： Compared with prior art, the beneficial effect of the present invention also lies in:
通过引风机、换热器以及在筛板钢带下方设置封闭的锥斗，锥斗内设置轴流风扇，实现了物料的穿透式逆流低温烘干，提高了烘干效率和速度，也降低了能耗；热泵式尾热利用适合尾气温度较低的热量回收，特别高效便捷。 Through the induced draft fan, heat exchanger and the closed cone bucket under the steel belt of the sieve plate, the axial flow fan is installed in the cone bucket to realize the penetrating countercurrent low-temperature drying of the material, which improves the drying efficiency and speed, and reduces the drying time. Reduce energy consumption; heat pump tail heat utilization is suitable for heat recovery with low tail gas temperature, which is particularly efficient and convenient.
叶片设计成中空楔形，且叶片轴径向中心对称，使其所连接的风机背板与面板抗相对扭转、挤压刚性极强，可以杜绝长时间使用造成的风机叶片连接背板根部的断裂。 The blades are designed to be hollow wedge-shaped, and the blade axis is radially and center-symmetrical, so that the fan backboard and panel connected to it can resist relative torsion and have strong extrusion rigidity, which can prevent the fan blade from being broken at the root of the fan blade connection backplane caused by long-term use.
叶片设计成中空楔形，且叶片轴径向中心对称，即使是用较薄的板材制作风机叶轮也能获得较高的强度，保证稳定、可靠使用，既能节省材料，便于制作，也有利于设备的轻巧化。 The blade is designed as a hollow wedge, and the blade axis is symmetrical to the radial center. Even if the fan impeller is made of thinner plates, it can obtain higher strength, ensure stable and reliable use, save materials, facilitate production, and benefit equipment. of lightness.
本发明将引风机叶片巧妙设计成中空楔形，且叶片轴径向中心对称的形状，实现了叶片上灰尘的实时清理，延长了设备的使用寿命并能有效杜绝灰尘积累引发的安全事故，应用前景广阔。 The invention cleverly designs the blade of the induced draft fan into a hollow wedge shape, and the radial center of the blade axis is symmetrical, which realizes the real-time cleaning of the dust on the blade, prolongs the service life of the equipment and can effectively prevent safety accidents caused by dust accumulation. The application prospect broad.
附图说明 Description of drawings
图1是本发明的平面结构示意图 Fig. 1 is the plane structure schematic diagram of the present invention
图2是引风机叶轮的平面结构示意图。 Fig. 2 is a schematic plan view of the impeller of the induced draft fan.
图3是引风机叶轮的剖面结构示意图。 Fig. 3 is a schematic cross-sectional structure diagram of an induced draft fan impeller.
图4是引风机的平面结构示意图。 Fig. 4 is a schematic plan view of the induced draft fan.
图中各标号表示： Each label in the figure means:
A、引风机；1、主动辊；2、进料斗；3、筛板钢带；4、锥斗；5、轴流风扇；6、抽风罩；11、烘干机；12、入风罩；13、从动辊；14、出料斗；21、旋风除尘器；22蒸发器；23、排气管；24、冷媒管；25、热泵主机；26、冷凝器；27、鼓风机；31、楔形叶片；32、叶轮外圆；33、叶轮进风口；34、轴座；35、铆钉；36、轴孔；37、叶轮背板；38、叶轮面板；41、叶轮；42、机壳进风口；43、渐开线圆；44、机座；45、机壳；46、机壳进风口盖板；47、机壳出风口；B、机壳出风口宽度。 A. Induced fan; 1. Driving roller; 2. Feed hopper; 3. Sieve plate steel belt; 4. Cone bucket; 5. Axial flow fan; 6. Exhaust hood; 11. Dryer; 12. Inlet hood ;13, driven roller; 14, discharge hopper; 21, cyclone dust collector; 22 evaporator; 23, exhaust pipe; 24, refrigerant pipe; 25, heat pump host; 26, condenser; 27, blower; 31, wedge Blade; 32, impeller outer circle; 33, impeller air inlet; 34, shaft seat; 35, rivet; 36, shaft hole; 37, impeller back plate; 38, impeller panel; 41, impeller; 42, casing air inlet; 43. Involute circle; 44. Machine base; 45. Case; 46. Cover plate of air inlet of case; 47. Air outlet of case; B. Width of air outlet of case.
具体实施方式 Detailed ways
现结合附图，对本发明进一步具体说明。 Now in conjunction with accompanying drawing, the present invention is described in further detail.
如图1、图2、图3和图4所示热泵式尾热利用逆流烘干机，包括烘干机11和引风机A，烘干机11两端分别设有抽风罩6和入风罩12，抽风罩6连接引风机A，引风机A经旋风除尘器21连接热泵系统的蒸发器22后排空；热泵系统的蒸发器22经冷媒管24连接主机25，主机25经冷媒管24连接冷凝器26；鼓风机27的出气端经冷凝器26连接入风罩12；所述引风机包括风机叶轮41和机壳45，风机叶轮41包括叶轮背板37、叶轮面板38和叶片31，叶片31布置成叶轮轴径向、中心对称的中空楔形；中空楔形叶片31连接叶轮面板38并与叶轮背板37焊接组成叶轮主体；叶轮面板38设有进风口33、叶轮背板37通过铆钉35固定并连接轴座34，轴座34通过轴孔36与风机轴进行配合连接；机壳45设有进风口42和出风口47，机壳外形轮廓线是渐开线，渐开线圆圆心与风机轴心重合，渐开线从机壳出风口47内侧开始，划线半径随渐开线圆逐渐加大，到机壳出风口47外侧结束，机壳出风口宽度B等于渐开线圆43周长；机壳进风口42设有盖板46，盖板上也有进风口便于连接管道，且轴心和叶轮轴心重合。 As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the heat pump tail heat utilization countercurrent dryer includes a dryer 11 and an induced draft fan A, and the two ends of the dryer 11 are respectively provided with an exhaust hood 6 and an air inlet hood 12. The exhaust hood 6 is connected to the induced draft fan A, and the induced draft fan A is evacuated after being connected to the evaporator 22 of the heat pump system through the cyclone dust collector 21; Condenser 26; The air outlet end of blower 27 is connected to air inlet hood 12 through condenser 26; Described induced draft fan comprises fan impeller 41 and casing 45, and fan impeller 41 comprises impeller back plate 37, impeller panel 38 and blade 31, and blade 31 Arranged in a hollow wedge shape that is radial to the impeller axis and symmetrical to the center; the hollow wedge-shaped blade 31 is connected to the impeller panel 38 and welded with the impeller back plate 37 to form the main body of the impeller; Connect the shaft seat 34, the shaft seat 34 is connected with the fan shaft through the shaft hole 36; the casing 45 is provided with an air inlet 42 and an air outlet 47, the outline of the casing is an involute, and the center of the involute circle is aligned with the fan shaft The center coincides, the involute starts from the inner side of the air outlet 47 of the casing, the radius of the line increases gradually with the involute circle, and ends at the outer side of the air outlet 47 of the casing, and the width B of the air outlet of the casing is equal to the circumference of the involute circle 43 ; The casing air inlet 42 is provided with a cover plate 46, and there is also an air inlet on the cover plate to facilitate the connection of the pipeline, and the axis coincides with the axis of the impeller.
所述烘干机11内有主动辊1和从动辊13带动筛板钢带3穿过，筛板钢带3下方设有封闭的锥斗4，锥斗4内设有轴流风扇5。开启轴流风扇5后，气流能强制穿过筛板钢带3及其上方的物料，实现穿透式逆流干燥。 The dryer 11 has a driving roller 1 and a driven roller 13 to drive the sieve plate steel belt 3 to pass through, and a closed cone bucket 4 is arranged under the sieve plate steel belt 3, and an axial flow fan 5 is arranged inside the cone bucket 4. After the axial flow fan 5 is turned on, the airflow can be forced to pass through the sieve plate steel belt 3 and the materials above it, realizing penetrating countercurrent drying.
所述筛板钢带3两端分别设有进料斗2和出料斗14，实现连续化的进料干燥。 Both ends of the sieve plate steel belt 3 are respectively provided with a feed hopper 2 and a discharge hopper 14 to realize continuous feed drying.
所述机壳45固定在机座44上。机壳45起到封闭作用，进风口42进气通过叶轮41旋转获得动能，并在机壳45内进行能量转换，一部分动能转换为气体的静压能，这样使输出气流具有速度动压头还有静压头，两者之和就是风机全压。 The casing 45 is fixed on the base 44 . The casing 45 acts as a seal, and the air inlet 42 obtains kinetic energy through the rotation of the impeller 41, and the energy is converted in the casing 45, and a part of the kinetic energy is converted into the static pressure energy of the gas, so that the output airflow has a velocity and a dynamic pressure head. There is a static pressure head, and the sum of the two is the total pressure of the fan.
机壳进风口42可以依需要连接风管，进风口盖板46可拆卸，通过螺栓固定连接机壳45，机壳45的蜗壳形渐开廓线满足风机壳密闭、输送气体同时实现能量高效转换的需要，使输出气流可以达到所需流量与全压。 The air inlet 42 of the casing can be connected to the air duct as required. The air inlet cover 46 is detachable and connected to the casing 45 by bolts. The volute-shaped involute profile of the casing 45 satisfies the airtightness of the fan casing and realizes energy delivery at the same time. The need for high-efficiency conversion enables the output airflow to reach the required flow and full pressure.
所述机壳进风口盖板46通过螺栓固定连接机壳15，并且可以拆卸。 The casing air inlet cover plate 46 is fixedly connected to the casing 15 by bolts, and can be disassembled.
设备工作时，由进料斗2进行均匀供料，随筛板钢带3穿过烘干机11内部，开启轴流风扇5后，由于锥斗4的封闭作用，气流能够强制穿过筛板钢带3及其上方的物料，进行穿透式逆流干燥；抽风罩6连接引风机A进气口，将湿热尾气旋风除尘后引入翅片蒸发器22完成尾热利用，经过热泵主机25工作，通过冷媒管24输送冷媒在翅片冷凝器26内释放热量，鼓风机27鼓入的空气在翅片冷凝器26上换热升温后，通过入风罩12进入烘干机11，完成穿透式逆流烘干与尾热利用。 When the equipment is working, the material is fed evenly by the feed hopper 2, and the sieve plate steel belt 3 passes through the inside of the dryer 11. After the axial flow fan 5 is turned on, due to the sealing effect of the cone bucket 4, the airflow can be forced to pass through the sieve plate The steel belt 3 and the material above it are subjected to penetrating countercurrent drying; the exhaust hood 6 is connected to the air inlet of the induced draft fan A, and the damp and hot tail gas is cyclone-dusted and introduced into the fin evaporator 22 to complete tail heat utilization, and the heat pump host 25 works, The refrigerant is transported through the refrigerant pipe 24 to release heat in the finned condenser 26, and the air blown in by the blower 27 exchanges heat on the finned condenser 26 and then enters the dryer 11 through the air inlet hood 12 to complete the penetrating reverse flow Drying and tail heat utilization.
本发明的引风机叶轮使用时，由于叶片设计成中空楔形，且叶片轴径向中心对称，因而高速旋转时，叶片表面在离心力作用下具有离心自净作用，使灰尘受到离心力作用而无法附着，这样就不会影响叶轮的动态、静态平衡，更不会积累灰尘；这种叶片结构的技术方案，特别适合输送气流量大的宽叶轮引风机采用。 When the induced draft fan impeller of the present invention is used, because the blade is designed to be hollow wedge-shaped, and the blade shaft is symmetrical to the center of the radial direction, when rotating at high speed, the surface of the blade has a centrifugal self-cleaning effect under the centrifugal force, so that the dust cannot be attached due to the centrifugal force. It will not affect the dynamic and static balance of the impeller, and will not accumulate dust; this technical scheme of the blade structure is especially suitable for the wide-impeller induced draft fan with a large air flow.
上述只是本发明的较佳实施例，并非对本发明作任何形式上的限制。任何熟悉本领域的技术人员，在不脱离本发明技术方案范围的情况下，都可利用上述揭示的技术内容对本发明技术方案做出许多可能的变动和修饰，或修改为等同变化的等效实施例。因此，凡是未脱离本发明技术方案的内容，依据本发明技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均应落在本发明技术方案保护的范围内。 The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.
Claims (5)
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Denomination of invention: Heat pump type tail heat utilization counter current dryer Granted publication date: 20180323 Pledgee: Guangfa Bank Co.,Ltd. Taishan Branch Pledgor: TAISHAN YOURONG PACKAGING PRODUCT CO.,LTD. Registration number: Y2024980018354 |