CN214742312U

CN214742312U - Drying circulating fan for sludge treatment

Info

Publication number: CN214742312U
Application number: CN202023108703.6U
Authority: CN
Inventors: 邢晓仁; 周林强; 张德华; 孟骁君; 汪浩; 石明祥
Original assignee: Suzhou High Tech Vein Industrial Park Development Co ltd
Current assignee: Suzhou High Tech Vein Industrial Park Development Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-11-16
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a be used for mud to deal with mummification circulating fan, including impeller, the outer motor of box in box, the box and cross-under connect the pivot of impeller and motor respectively inside and outside the box, and the box communicates with the air-supply line and the sealed meeting of play tuber pipe on two directions. This pivot is being hugged closely box outer wall department cover very much and is being equipped with integrative along with the wind pressure sealing ring that changes, and this wind pressure sealing ring is close to the inside end and the box surface clearance matching of box, keeps away from the outside end of box and establishes to the uncovered of loudspeaker form, distributes on the rampart of this uncovered inboard ring wall and is equipped with independent vortex blade more than three separately, and this vortex blade shaping is the cambered surface along with pivot direction of rotation outside-in drainage, and inside end peripheral distribution is equipped with a plurality of bleeder vents. Use the utility model discloses a fan improvement structure utilizes the wind pressure sealing ring that cup joints in the pivot, and the anti-overflow smelly rate reaches more than 97%, has improved the peripheral factory environment of fan conscientiously, has promoted human comfort level and safety guarantee.

Description

Drying circulating fan for sludge treatment

Technical Field

The utility model relates to a power is external, move fan that carries high-pressure draught especially relates to a fan construction improvement that can restrain high-pressure high temperature foul smell and spill over along with the pivot gap, belongs to fan equipment field.

Background

Sewage treatment plants are important unit mechanisms for treating municipal wastewater, and with the long-term technical accumulation of sewage treatment, the existing sewage treatment process flow is mature, but the final treatment of sludge generated in the sewage treatment process is relatively more complicated and difficult.

The layout structures of the pipeline facilities of different sewage and sludge treatment (disposal) units are different, but are different. The air flow power is increased at different positions of the pipeline, so that a fan needs to be introduced to increase the power. The general structure of the fan comprises a box body, an impeller in the box body, a motor outside the box body and a rotating shaft which is connected with the impeller and the motor inside and outside the box body in a penetrating manner respectively, and the box body is communicated with an air inlet pipe and an air outlet pipe in a sealing manner in two directions. Therefore, under the drive of high output torque of the variable frequency motor, the rotating shaft can drive the impeller in the box body to rotate, and flowing power is added to gas in the pipeline. Because the power part of fan is external, and is in the high rotational speed state in the overwhelming majority of time quantum of pivot, consequently inevitably need keep certain gap between pivot and the box.

According to the process flow, at the moment, the malodorous gas in the pipeline is in a high-temperature high-pressure high-humidity state, and a part of the methane which is not negligible overflows from the gap. The actual treatment field environment is very severe. But the odor can not be breathed normally and is hard to bear, the moisture is easy to cause the corrosion of the outer surface of equipment outside the pipeline, and the high-temperature gas is easy to cause accidents such as scalding and the like.

Due to the inherent structural limitation of the fan, the environmental management of the process section of the sewage (sludge) treatment plant cannot achieve a happy result for a long time. The optimization and improvement of the fan structure are one of the problems that needs to be solved at present.

Disclosure of Invention

The utility model aims at providing a be used for mud to deal with mummification circulating fan, solve the problem that prevents that foul gas is excessive, factory (workshop) environment improves.

The utility model discloses realize above-mentioned purpose technical solution is for sludge disposal mummification circulating fan, including impeller, the outer motor of box in box, the box and cross-under connect the pivot of impeller and motor respectively inside and outside the box, and the box communicates its characterized in that with the air-supply line and the sealed meeting of play tuber pipe on two directions: the pivot is being hugged closely box outer wall department cover and is being equipped with integrative wind pressure sealing ring along with the commentaries on classics, the wind pressure sealing ring is close to the inward end and the box surface clearance matching of box, keeps away from the outside-in end of box and establishes to the uncovered of loudspeaker form, it is equipped with independent vortex blade separately more than three to distribute on the uncovered inboard rampart, the vortex blade shaping is the cambered surface along with pivot rotation direction outside-in drainage, and inward end periphery distributes and is equipped with a plurality of bleeder vents.

The aforesaid is used for sludge treatment mummification circulating fan, be equipped with the Teflon oxidation resistant plate of fixed dress between box outer wall and the wind pressure sealing ring, the inboard plane laminating box outer wall of Teflon oxidation resistant plate, outside plane are equipped with the heavy groove of corresponding inside end external diameter in pivot perforation periphery, the inside end matches with heavy groove clearance, and the outside plane clearance of inside end periphery and Teflon oxidation resistant plate matches.

The drying circulating fan for sludge treatment is characterized in that the outer plane of the Teflon oxidation-resistant plate is provided with an annular groove which is opposite to the air hole and used for returning air flow.

The above-mentioned be used for sludge treatment mummification circulating fan, the wind pressure sealing ring is the axial to the concatenation body of half-separating, and assembles into complete wind pressure sealing ring through multiple optional mode an organic whole.

The above-mentioned be used for sludge treatment mummification circulating fan, be equipped with more than one bearing frame and inscribed bearing between wind pressure sealing ring and the motor, the pivot cross-under is in the bearing axial positioning and driven the rotation.

Use the utility model discloses a fan improvement structure possesses the progressive nature that is showing: the wind pressure sealing ring sleeved on the rotating shaft is utilized to form an inward and adjustable air pressure closed loop along with rotation and seal a methane overflow channel, the anti-overflow odor rate reaches more than 97%, the factory environment around the fan is practically improved, and the comfort level and safety guarantee of a human body are improved.

Drawings

Fig. 1 is a schematic view of the general structure of the anti-overflow fan of the present invention.

Fig. 2 is an enlarged schematic view of a portion of the structure of fig. 1.

Fig. 3 is a structural view illustrating an outward view of a wind pressure sealing ring in the anti-foul fan shown in fig. 1.

Detailed Description

The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and grasp, and thus make a clearer definition of the protection scope of the present invention.

To mud processing (sewage treatment) factory, because the external foul gas that causes of traditional fan power is excessive, the abominable objective of factory environment has the phenomenon, the utility model discloses the designer is based on the experience and the relevant knowledge of machine-building that the long-term mud processing (sewage treatment) equipment maintenance work accumulated, strives for to improve the fan structure, on not influencing pivot speed normal rotation basis adjustablely, to the peripheral intangible air current protective screen of constructing one of the excessive space of foul gas to keep marsh gas inside the fan box and transport to air-out pipe high efficiency by the air-supply line greatly. The improved structure of the fan can be widely applied to fans with gas overflow in various industries except sludge treatment (sewage treatment), and the fan which is assembled by complete equipment is easy to install and use, thereby realizing the function of preventing gas overflow.

Fig. 1 to 3 are schematic views of the improved structure and partial detailed structure of the blower. In order to introduce innovative characteristics, the basic structure of the air conditioner needs to be repeated, namely the air conditioner comprises a box body 1, an impeller (not shown) in the box body, a motor (not shown) outside the box body and a rotating shaft 2 which is connected with the impeller and the motor in a penetrating way inside and outside the box body respectively, and the box body is connected and communicated with an air inlet pipe and an air outlet pipe in a sealing way in two directions. The fan has the function of directly communicating the air inlet pipe and the air outlet pipe, and the external motor drives the rotating shaft and the internal impeller to rotate, so that the airflow power is increased. It is understood that the rotating shaft penetrates through the side wall of the box body, flexible rotation needs to be guaranteed, and the rotating shaft is not influenced by external resistance to rotating power, so that the rotating shaft needs to be in clearance fit with the side wall of the box body on the basis of axial positioning of the external bearing. The device also provides an overflow way for odor with high pressure, high heat and high humidity in the fan box body, and methane overflows under the action of pressure difference, so that the surrounding environment is deteriorated. The technical means summary of solving this problem sees that this pivot 2 is equipped with integrative wind pressure sealing ring 3 along with the commentaries on classics closely in box 1 outer wall department cover, and this wind pressure sealing ring 3 is close to the inside end 31 and the box surface clearance matching of box, and the outside end 32 of keeping away from the box establishes to the uncovered of loudspeaker form, distributes on the rampart of this uncovered inboard and is equipped with three above independent vortex blades 33 separately, and this vortex blade shaping is the camber of following the pivot direction of rotation outside-in drainage, and inside end 31 periphery distributes and is equipped with a plurality of bleeder vents 34.

As the preferred embodiment shown in the figure, a Teflon oxidation resistant plate which is fixedly connected and provided with a hole at the center is arranged between the outer wall of the box body 1 and the wind pressure sealing ring 3, and a rotating shaft is penetrated and connected in the Teflon oxidation resistant plate. The inner side plane of the Teflon oxidation resistant plate is attached to the outer wall of the box body. The Teflon oxidation resistant plate is integrally and fixedly connected with the outer wall of the box body by using a fastening screw 6 to penetrate through the Teflon oxidation resistant plate from outside to inside. And the outer plane is provided with a sink 51 corresponding to the outer diameter of the inward end at the periphery of the through hole of the rotating shaft. As can be seen from the thick line shown in FIG. 2, the outer wall of the box and the hole wall of the Teflon oxidation resistant plate are fitted with the rotating shaft 2 in the gap X1, the inward end 31 and the sinking groove 51 are fitted in the gap X2, and the periphery of the inward end is fitted with the outer side plane of the Teflon oxidation resistant plate and the gap X3. The gap width of each clearance fit has no strict requirement of consistency, and the basic value is 0.5-1 mm. It can be seen that the high pressure air flow in the tank will overflow therefrom in the absence of external pressure.

The fan is also provided with more than one bearing seat 4 and a bearing 41 which is internally connected between the wind pressure sealing ring 3 and the motor, and the rotating shaft 2 is penetrated in the bearing to be axially positioned with high strength and high linearity.

To clearly understand how the above-outlined technical features are implemented to solve the problem of overflow prevention, before showing the structural features of each part in detail, a simple principle is explained as follows. The wind pressure sealing ring sleeved on the rotating shaft has a sealing effect formed by high-pressure airflow in a specific direction formed by the wind pressure sealing ring. Mainly relates to the following characteristics: 1. is sleeved with the rotating shaft integrally and rotates along with the rotating shaft; 2. the inner part of the baffle plate is provided with a turbulent flow blade which can rotate along with the rotating shaft to form airflow from an outward end to an inward end; 3. the periphery of the inward end is provided with air holes, so that the formed air flow can be blown towards the outer wall of the box body and is turned at the gap X3 to form centripetal and centrifugal flow distribution air pressure. This forms a barrier against overflow at the gap X3. However, as can be seen from the foregoing, the biogas inside the box body is delivered in a high pressure state, and therefore it is necessary to ensure that the air pressure of the barrier formed by the wind pressure sealing ring is greater than the overflow air pressure, and for this purpose, the increase or decrease of the air pressure of the formed airflow, that is, the strength of the barrier, can be achieved only by regulating and controlling the output rotation speed of the motor. As the optimal design of the operation control angle of the fan, an air pressure sensor can be arranged near a rotating shaft in the box body, a detection result is fed back to a controller of the fan in real time, and the controller adjusts the output rotating speed of the motor. On one hand, the air supply speed from the air inlet pipe to the air outlet pipe is favorably improved or reduced, and on the other hand, the strength of the barrier outside the box body is favorably adjusted, and the odor is prevented from overflowing; and simultaneously, reasonable energy consumption utilization rate is obtained. Of course, the realization mode of realizing the operation regulation and control of the fan through the controller belongs to the common function realization, so the detailed description is omitted.

From the further refinement of the characteristics, as shown in fig. 3, six turbulence blades 33 are equally distributed in the circumferential direction in the wind pressure sealing ring 3, and an air hole 34 with a diameter of 6-8 mm is respectively formed in an area between two adjacent turbulence blades corresponding to the periphery of the inward end. As shown in the lower half of fig. 2, the outer plane of the teflon antioxidant plate 5 is provided with a circular groove 52 facing the air hole 34 for returning the air flow. The air flow formed by any turbulence blade is blown out of the adjacent air holes to the box body, the ring groove can better prolong the power of the air flow blown out of the air holes, the formed air flow is prevented from being solidified at the air holes, and the returned air flow collides with the air flow blown out from the head-on side, so that the air flow is better deflected and diffused in the gap X3 and forms a barrier with an isolation effect.

From the view of the attachment of the wind pressure sealing ring to the rotating shaft, as can be seen from the embodiment shown in fig. 2 and 3, the wind pressure sealing ring 3 is a split body with half split in the axial direction. Namely, the upper half splicing body A and the lower half splicing body B, and the implementation of the left-right half separation can be also carried out. And each splicing body is inwards bent and formed with an assembly plate 35 at the butt joint edge, more than one through screw hole is arranged on the assembly plate overlapped in the butt joint, and the upper half splicing body A and the lower half splicing body B are fixed into a whole through the screw holes by screws 7.

Of course, the splicing body has other optional and more convenient mounting and fixing embodiments due to the greater inconvenience of operating screw fastening in the opening. For example, for a pair of splicing bodies shown in fig. 2 or fig. 3, the difference is that the screw holes on the assembling plates are replaced by magnetic blocks, and the polarities of the magnetic blocks on the assembling plates on two opposite sides are different. Therefore, when the two spliced parts are close to each other, the two spliced parts can be magnetically adsorbed into a whole, and when the two spliced parts are required to be disassembled, the two spliced parts can be separated as long as one part is axially translated under the drive of external force to enable the two spliced parts to be dislocated to a certain degree. Of course, the two parts can be aligned and connected into a whole directly by the hoop in a surrounding manner on the premise of not forming the assembling plate, and the disassembly convenience is very good.

To sum up about the utility model discloses a fan improvement structural scheme introduces and embodiment details can be seen, and this scheme possesses outstanding substantive characteristics and the progressive nature that is showing: the wind pressure sealing ring sleeved on the rotating shaft is utilized to form an inward and adjustable air pressure closed loop along with rotation and seal a methane overflow channel, the anti-overflow odor rate reaches more than 97%, the factory environment around the fan is practically improved, and the comfort level and safety guarantee of a human body are improved.

In addition to the above embodiments, the present invention may have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of the present invention.

Claims

1. A be used for sludge treatment mummification circulating fan, including the pivot of impeller, the outer motor of box in box, cross-under in the box outer respectively connecting impeller and motor, and the box communicates its characterized in that with the air-supply line and the sealed meeting of air-out pipe on two directions: the pivot is being hugged closely box outer wall department cover and is being equipped with integrative wind pressure sealing ring along with the commentaries on classics, the wind pressure sealing ring is close to the inward end and the box surface clearance matching of box, keeps away from the outside-in end of box and establishes to the uncovered of loudspeaker form, it is equipped with independent vortex blade separately more than three to distribute on the uncovered inboard rampart, the vortex blade shaping is the cambered surface along with pivot rotation direction outside-in drainage, and inward end periphery distributes and is equipped with a plurality of bleeder vents.

2. The drying circulating fan for sludge disposal according to claim 1, characterized in that: be equipped with the teflon anti-oxidation board of fixed connection dress between box outer wall and the wind pressure sealing ring, inboard plane laminating box outer wall, the outside plane of teflon anti-oxidation board are equipped with the heavy groove that corresponds inside end external diameter at pivot perforation periphery, the inside end matches with heavy groove clearance, and the outside plane clearance of inside end periphery and teflon anti-oxidation board matches.

3. The drying circulating fan for sludge disposal according to claim 2, characterized in that: and the outer side plane of the Teflon anti-oxidation plate is provided with a ring groove which is opposite to the air hole and used for returning air flow.

4. The drying circulating fan for sludge disposal according to claim 1 or 2, characterized in that: the clearance of clearance fit is 0.5-1 mm.

5. The drying circulating fan for sludge disposal according to claim 1, characterized in that: the wind pressure sealing ring is internally provided with six turbulence blades which are distributed in a circumferential and equal distribution mode, and the periphery of the inward end corresponds to the area between two adjacent turbulence blades and is respectively provided with an air hole with the diameter of 6-8 mm.

6. The drying circulating fan for sludge disposal according to claim 1, characterized in that: the wind pressure sealing ring is a splicing body which is axially split into two halves, and an assembling plate is formed by inwards bending each splicing body at the butt joint edge.

7. The drying circulating fan for sludge disposal according to claim 6, characterized in that: more than one through screw hole is arranged on the assembly plates which are overlapped in an alignment way, and a pair of splicing bodies are screwed and fixed into a whole.

8. The drying circulating fan for sludge disposal according to claim 6, characterized in that: the first magnetic block is embedded in the assembling plate of the splicing body at one side, the second magnetic block is embedded in the assembling plate of the splicing body at the other side, the polarities of the first magnetic block and the second magnetic block are different, and the splicing bodies are fixed into a whole in a magnetic attraction mode.

9. The drying circulating fan for sludge disposal according to claim 1, characterized in that: the wind pressure sealing ring is a splicing body which is axially split into two halves, and the splicing bodies are clamped into a whole by a hoop sleeve.

10. The drying circulating fan for sludge disposal according to claim 1, characterized in that: more than one bearing seat and an internally connected bearing are arranged between the wind pressure sealing ring and the motor, and the rotating shaft is penetrated in the bearing to be axially positioned and driven to rotate.