WO2021253449A1

WO2021253449A1 - Environmentally friendly sealing apparatus for body of centrifugal blower

Info

Publication number: WO2021253449A1
Application number: PCT/CN2020/097258
Authority: WO
Inventors: 宋大山
Original assignee: 南京千里行测控技术有限公司
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-12-23

Abstract

An environmentally friendly sealing apparatus for the body of a centrifugal blower, the apparatus comprising a sealing shaft sleeve device (1) and a push-fastening sleeve (2). The sealing shaft sleeve device (1) comprises a plate pressing sleeve (11), through-pipes (12), a threaded pipe (13), and a shaft sleeve ring (14); the through-pipes (12), which communicate with one another, are fixedly mounted on the plate pressing sleeve (11), and the threaded pipe (13) is fixedly mounted on the top parts of the through-pipes (12); the sleeve ring (14) is fixedly mounted on the top part of the threaded pipe (13); and the push-fastening sleeve (2), which is used for improving the sealing effect of a rotating shaft, is elastically connected, by means of an elastic connector (4), to a threaded push pipe (3). The elastic connector (4) comprises a strong spring (41) and rotational connection rings (42), the rotational connection rings (42) are fixedly mounted at both heads of the strong spring (41), and the two rotational connection rings (42) are each inserted into rotational connection cavities, which are provided on the push-fastening sleeve (2) and the threaded push pipe (3), and are rotatingly connected to the rotational connection cavities. The environmentally friendly sealing apparatus for the body of a centrifugal blower is used for sealing a rotating shaft of a centrifugal blower.

Description

Environmental protection centrifugal blower body sealing device

Technical field

The invention relates to the technical field of blower equipment, in particular to an environmental protection centrifugal blower body sealing device.

Background technique

The centrifugal blower is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Centrifugal blowers are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced air for boilers and industrial furnaces; cooling and cooling in air conditioning equipment and household appliances Ventilation; drying and selective delivery of grains; air source of wind tunnel and inflation and propulsion of hovercraft, etc.

During the normal operation of the centrifugal blower, when the gas sucked into the blower flows in the flow passages of the blower, the unnecessary loss of the air flow inside the blower due to poor sealing should be avoided to the greatest extent. The precise shaft sleeve sealing design can improve the working efficiency of the fan and reduce the waste of energy. The shaft sleeve seal currently used on the market adopts the common concave-convex groove bayonet design. It is necessary to use the extra 2 screws to fasten the shaft sleeve seal at the split ends of the casing. It is inconvenient to install and disassemble. It is inconvenient to use the screws to fasten the process. , Due to product manufacturing deviations and improper installation operations, it is easy to cause the sleeve seal roundness deformation, the assembly gap cannot be effectively controlled, and the concentricity tolerance increases and other adverse consequences, which will directly affect the sealing effect of the sleeve seal.

Therefore, it is necessary to provide an environmentally friendly centrifugal blower body sealing device to solve the above technical problems.

Summary of the invention

The technical problem solved by the present invention is to provide an environmentally friendly centrifugal blower body sealing device for sealing the rotating shaft of a centrifugal blower.

In order to solve the above technical problems, the environmental protection centrifugal blower body sealing device provided by the present invention includes: a sealed shaft sleeve device, the sealed shaft sleeve device includes a pressure plate sleeve, a through pipe, a threaded tube and a shaft sleeve ring, and the pressure plate sleeve is fixedly installed with each other A connected through pipe, and a threaded pipe is fixedly installed on the top of the through pipe, and a shaft sleeve ring is fixedly installed on the top of the threaded pipe; a push fastener sleeve, which is used to improve the sealing effect of the rotating shaft, is connected to the thread through an elastic connector Push tube elastic connection.

Preferably, the elastic connector includes a strong spring and a rotating connecting ring, both ends of the strong spring are fixedly installed with rotating connecting rings, and the two rotating connecting rings are respectively inserted in the rotating connecting cavity opened by the pushing fastening sleeve and the threaded pushing tube The two rotating connecting rings are respectively inserted into the rotating connecting cavity opened by the pushing fastening sleeve and the threaded pushing tube and are connected to the rotating connecting cavity in rotation, so that the threaded pushing tube is tightly connected to the pushing and pushing tube. When the sleeve is fixed, the strong spring will not be twisted.

Preferably, the threaded push tube and the threaded tube are matched with each other.

Preferably, a tapered rubber ring is fixedly sleeved at the connection between the pressure plate sleeve and the through pipe.

Preferably, the outer wall of the propelling fastening sleeve close to the bottom is fixedly fitted with a sealing connecting ring, because the tapered rubber ring and the sealing connecting ring are in corresponding elastic contact, thereby also enhancing the sealing effect.

Preferably, a chamfered groove is provided on the top of the shaft sleeve ring to facilitate the sleeve connection of the fastening sleeve.

Compared with related technologies, the environmental protection centrifugal blower body sealing device provided by the present invention has the following beneficial effects:

The invention provides an environmentally-friendly centrifugal blower body sealing device. Both a propulsion fastening sleeve and a threaded propelling tube are sleeved on a threaded tube, and the threaded propelling tube is rotated to slide along the threaded tube, thereby pushing the propelling fastening sleeve to contact the through tube , And the strong spring is compressed, and the structure of the push fastening sleeve under the push of the strong spring eliminates the hidden danger of seal failure caused by the vibration of the centrifugal blower, and also ensures the sealing effect and the long-term effectiveness of the seal.

Description of the drawings

Figure 1 is a schematic structural diagram of a preferred embodiment of the environmental protection centrifugal blower body sealing device provided by the present invention;

Figure 2 is a schematic diagram of the structure of the sealed bushing shown in Figure 1;

Fig. 3 is a schematic diagram of the connection structure of the advancing fastening sleeve and the threaded advancing tube shown in Fig. 1;

Fig. 4 is a schematic diagram of the structure of the elastic connector shown in Fig. 3.

Numbers in the figure: 1. Sealed shaft sleeve, 11, pressure plate sleeve, 12, through pipe, 13, threaded tube, 14, shaft sleeve ring, 2. Pushing fastening sleeve, 3. Threaded push tube, 4. Elastic connection Device, 41, strong spring, 42, rotating connection ring, 5, tapered rubber ring, 6, sealing connection ring, 7, chamfered groove, 8, rotating shaft.

detailed description

The present invention will be further described below in conjunction with the drawings and embodiments.

Please refer to Figure 1, Figure 2, Figure 3 and Figure 4, in which Figure 1 is a schematic structural diagram of a preferred embodiment of the environmental protection centrifugal blower body sealing device provided by the present invention; Figure 2 is the sealing shaft shown in Figure 1 The schematic diagram of the structure of the sleeve; FIG. 3 is a schematic diagram of the connection structure of the push fastening sleeve and the threaded push tube shown in FIG. 1; FIG. 4 is a schematic diagram of the structure of the elastic connector shown in FIG. 3. The environmental protection centrifugal blower body sealing device includes: a sealing shaft sleeve 1 and a propelling fastening sleeve 2.

In the specific implementation process, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the sealing sleeve 1 includes a pressure plate sleeve 11, a through pipe 12, a threaded tube 13, and a shaft sleeve ring 14, on the pressure plate sleeve 11 The through pipe 12 communicating with each other is fixedly installed, and the top of the through pipe 12 is fixedly installed with a threaded tube 13, and the top of the threaded tube 13 is fixedly installed with a shaft sleeve ring 14 to improve the sealing effect of the rotating shaft. The elastic connector 4 is elastically connected to the threaded push tube 3, and the elastic connector 4 includes a strong spring 41 and a rotating connecting ring 42. Both ends of the strong spring 41 are fixedly installed with a rotating connecting ring 42, and the two rotating connecting rings 42 are respectively It is inserted into the rotating connection cavity opened by the pushing fastening sleeve 2 and the threaded pushing tube 3 and is connected to the rotating connection cavity in rotation.

It should be noted that the sealing sleeve 1 is inserted from the shaft hole on the output rotating shaft 8 of the centrifugal blower, and the holding rotating shaft 8 is inserted into the sealing sleeve 1 and extends out of the sealing sleeve 1 , Set the push-fastening sleeve 2 and the threaded push tube 3 on the threaded tube 13, rotate the threaded push tube 3 to slide along the threaded tube 13, so push the push-pushing sleeve 2 to contact the through tube 12 until the thread advances The tube 3 and the threaded tube 13 are threadedly fixedly connected, and the strong spring 41 is compressed. Since the two rotating connecting rings 42 are respectively inserted into the rotating connecting cavity opened by the pushing fastening sleeve 2 and the threaded pushing tube 3 and are rotatingly connected with the rotating connecting cavity, Therefore, the strong spring 41 will not twist when the threaded push tube 3 is pushed and the tightening sleeve 2 is pushed, and the structure of the push tightening sleeve 2 under the push of the strong spring 41 eliminates the sealing failure caused by the vibration of the centrifugal blower. The hidden danger of the invention also ensures the sealing effect and the long-term effectiveness of the sealing, and also solves the shortcomings of difficulty in sealing construction and difficulty in ensuring the sealing effect and aesthetics. In addition, the present invention has a simple structure and convenient installation, which is beneficial to popularization.

Among them, the threaded pushing tube 3 and the threaded tube 13 are matched with each other, and the top of the sleeve ring 14 is provided with a chamfered groove 7 to facilitate the sleeve connection of the fastening sleeve 2.

Wherein, the connection between the pressure plate sleeve 11 and the through pipe 12 is fixedly sleeved with a tapered rubber ring 5, and the outer wall of the propelling fastening sleeve 2 near the bottom is fixedly fitted with a sealing connecting ring 6, because the tapered rubber ring 5 is connected to the sealing The ring 6 corresponds to elastic contact, thereby also enhancing the sealing effect.

The working principle of the environmental protection centrifugal blower body sealing device provided by the present invention is as follows:

Insert the sealed bushing device 1 from the shaft hole on the output rotating shaft 8 of the centrifugal blower, and insert the rotating shaft 8 into the sealed bushing device 1 and extend the sealed bushing device 1, and tighten it. The sleeve 2 and the threaded push tube 3 are both sleeved on the threaded tube 13, and the threaded push tube 3 is rotated to slide along the threaded tube 13, so that the push-pushing fastening sleeve 2 is in contact with the through tube 12 until the threaded push tube 3 and the threaded tube 13 The screw is fixedly connected, and the strong spring 41 is compressed. Because the two rotating connecting rings 42 are respectively inserted into the rotating connecting cavity opened by the pushing fastening sleeve 2 and the threaded pushing tube 3 and are connected to the rotating connecting cavity in rotation, the threaded pushing tube 3 When pushing the advancing fastening sleeve 2, the strong spring 41 will not be twisted. Because the advancing fastening sleeve 2 is pushed by the strong spring 41, the structural form eliminates the hidden danger of seal failure caused by the vibration of the centrifugal blower, and also guarantees The sealing effect and long-term sealing effect are improved.

The above are only the embodiments of the present invention and do not limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, The same reasoning is included in the scope of patent protection of the present invention.

Claims

An environmentally-friendly centrifugal blower body sealing device, which is characterized in that it comprises:

Sealed bushing device (1), said sealing bushing device (1) includes a pressure plate sleeve (11), a through pipe (12), a threaded tube (13) and a shaft sleeve ring (14), the pressure plate sleeve ( 11) A through pipe (12) communicating with each other is fixedly installed on the through pipe (12), and a threaded pipe (13) is fixedly installed on the top of the through pipe (12), and a shaft collar (14) is fixedly installed on the top of the threaded pipe (13) ；

The pushing fastening sleeve (2) is used for improving the sealing effect of the rotating shaft, and the pushing fastening sleeve (2) is elastically connected with the threaded pushing tube (3) through an elastic connector (4).
The environmental protection centrifugal blower body sealing device according to claim 1, wherein the elastic connector (4) includes a strong spring (41) and a rotating connecting ring (42), and both ends of the strong spring (41) are The rotating connecting ring (42) is fixedly installed, and the two rotating connecting rings (42) are respectively inserted in the rotating connecting cavity opened by the pushing fastening sleeve (2) and the threaded pushing tube (3) and rotating with the rotating connecting cavity connect.
The environmental protection centrifugal blower body sealing device according to claim 1, characterized in that the threaded advancing tube (3) and the threaded tube (13) are matched with each other.
The environmental protection centrifugal blower body sealing device according to claim 1, characterized in that, a tapered rubber ring (5) is fixedly sleeved at the connection between the pressure plate sleeve (11) and the through pipe (12).
The environmental protection centrifugal blower body sealing device according to claim 1, characterized in that the outer wall of the propulsion fastening sleeve (2) near the bottom is fixedly fitted with a sealing connection ring (6).
The environmental protection centrifugal blower body sealing device according to claim 1, wherein the top of the shaft collar (14) is provided with a chamfered groove (7).