CN221063255U - Mounting structure of mechanical seal of fog gun and fog gun - Google Patents

Abstract

The utility model relates to the technical field of spraying devices, in particular to a mounting structure of a mechanical seal of a fog gun and the fog gun, wherein the mounting structure is used for realizing the connection of the mechanical seal and a rotating shaft of the fog gun, and comprises the mechanical seal, the mechanical seal comprises a rotating shaft body for being in butt joint with the rotating shaft, and further comprises a bracket assembly, the rotating shaft is supported in a wind barrel of the fog gun by the bracket assembly, and the rotating shaft can circumferentially rotate relative to the bracket assembly; the rotating shaft at least partially axially extends out of the outer side of the bracket assembly to form an extension part, the rotating shaft body is arranged on the extension part and can rotate relative to the extension part, and the rotating shaft body is suspended in the wind barrel; the problem that some parts (such as the bearing) in the rotating shaft body are damaged rapidly due to the weight of the rotating shaft and the fan blades can be avoided, and the service life of the whole mechanical seal is prolonged.

Description

Mounting structure of mechanical seal of fog gun and fog gun

Technical Field

The utility model relates to the technical field of spraying devices, in particular to a mounting structure of a mechanical seal of a fog gun and the fog gun.

Background

The fog gun is also called an air-assisted atomizing device, and mainly comprises a device for spraying out water mist by wind power.

In the related art, some fog guns adopt high-pressure water flow as power to drive fan blades to rotate and form water fog, and mainly comprise a wind barrel, a rotating shaft, the fan blades, a spray pipe, a spray head and a mechanical seal, wherein the rotating shaft is internally of a hollow structure, one end of the rotating shaft is connected with the spray pipe capable of freely rotating, the other end of the rotating shaft is communicated with the high-pressure water flow through the mechanical seal, the fan blades are arranged on the rotating shaft,

The mechanical seal mainly comprises a rotating shaft body, an internal bearing and other parts, is connected with the rotating shaft and can rotate relative to the rotating shaft, and is mainly used for injecting high-pressure water flow sprayed by a high-pressure pump and the like into the rotating shaft.

During operation, high-pressure water flow is led into the rotating shaft through the mechanical seal, then is led into the spray pipe through the rotating shaft, and finally is sprayed out from the spray head of the spray pipe to form water mist, in the process, the spray head generates recoil force when spraying out the water mist so as to drive the spray pipe to rotate, the spray pipe rotates to drive the rotating shaft to rotate, and then the fan blades are driven to rotate to form wind power, so that the water mist sprayed out of the spray pipe is sprayed out from the air outlet end of the air barrel under the action of the wind power; for the fog gun, reference is specifically made to an air-assisted atomizing device disclosed in publication number CN 212702538U.

However, the above-mentioned fog gun has drawbacks when in use, mainly in that the rotating shaft body in the mechanical seal is generally directly mounted on the air grid or the air barrel by using the bearing, so that the bearing in the rotating shaft body needs to bear the weight of the rotating shaft, the fan blades on the rotating shaft and other parts when in actual use, and thus, the bearing in the rotating shaft body is easy to damage after long-term use, and the service life of the bearing in the rotating shaft body is not utilized, thus the fog gun still needs to be improved.

Disclosure of utility model

In order to solve at least one technical problem mentioned in the background art, the utility model aims to provide a mounting structure of a mechanical seal of a fog gun.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The mounting structure of the mechanical seal of the fog gun is used for realizing the connection of the mechanical seal and a rotating shaft of the fog gun and comprises the mechanical seal, the mechanical seal comprises a rotating shaft body used for being in butt joint with the rotating shaft, and also comprises a bracket assembly, the rotating shaft is supported in a wind barrel of the fog gun by the bracket assembly, and the rotating shaft can rotate circumferentially relative to the bracket assembly; the rotating shaft at least partially axially extends out of the outer side of the bracket assembly to form an extension part, the rotating shaft body is arranged on the extension part and can rotate relative to the extension part, and the rotating shaft body is suspended in the wind barrel.

Compared with the prior art, the scheme has the advantages that:

In this scheme, support the pivot through setting up the support subassembly to make the pivot extend the support subassembly outside and form extension, and the pivot body is located on the extension, and the suspension is in the wind bucket, so, the weight of parts such as pivot, flabellum is equivalent to being born by the support subassembly, and the pivot body does not bear the weight of these parts, so can avoid some parts in the pivot body (such as the bearing) because load pivot, the problem that the weight of these parts of flabellum accelerates the damage, be favorable to improving whole mechanical seal's life.

Preferably, the shaft body is mounted on the extension portion by a first bearing.

Preferably, the bracket assembly includes a mounting bracket fixed in the wind tub and a second bearing through which the rotation shaft is rotatably mounted on the mounting bracket.

Preferably, the mounting frame is provided with a bearing seat, and the second bearing is mounted on the bearing seat.

Preferably, the bracket components at least comprise two groups, the at least two groups of bracket components are axially arranged at intervals along the rotating shaft, and the rotating shaft is supported by the at least two groups of bracket components.

The utility model also provides a fog gun, which comprises an air barrel, a rotating shaft, fan blades, a mechanical seal and a spray pipe, wherein the two ends of the air barrel respectively form an air inlet end and an air outlet end, the rotating shaft is internally provided with an axially-through runner, the rotating shaft is arranged in the air barrel, and the fan blades are fixed on the rotating shaft; the spray pipe is arranged at one end of the rotating shaft, which is close to the air inlet end of the air barrel, and is communicated with the flow passage, and spray heads are arranged at two sides of the spray pipe; the mechanical seal comprises a rotating shaft body, one end of the rotating shaft, which is close to the air outlet end of the air barrel, is connected with the rotating shaft body, and the rotating shaft body is connected with the rotating shaft through the mechanical seal mounting structure of the fog gun.

Preferably, one end of the rotating shaft body is provided with a water inlet, the other end of the rotating shaft body is provided with a mounting groove, and the extending part is rotatably arranged in the mounting groove; the mechanical seal also comprises a dynamic seal assembly, and the water inlet hole and the runner are in sealing butt joint through the dynamic seal assembly.

Preferably, the dynamic seal assembly comprises a fixed seat, a movable seat, two wear-resistant rings and an elastic piece, wherein the fixed seat is fixed at one end of the mounting groove close to the water inlet, the movable seat is axially and movably arranged on the fixed seat in a penetrating manner along the fixed seat, and a channel axially communicated with the water inlet and the flow channel is formed in the movable seat; the two wear-resistant rings are respectively fixed at the opposite ends of the movable seat and the extension part; the elastic piece is used for providing elastic force to enable the movable seat to have a trend of moving axially away from the fixed seat so as to enable the two wear-resistant rings to keep abutting.

Preferably, a partition plate is sleeved on the extension part, the installation groove is partitioned by the partition plate to form a water draining cavity, and the contact surface of the two wear-resisting rings is positioned in the water draining cavity; the rotary shaft body is also provided with a drain pipe, one end of the drain pipe is communicated with the drain cavity, and the other end of the drain pipe is led out of the air barrel.

Preferably, an air grid is arranged at the air outlet end of the air barrel, a through hole is formed in the middle of the air grid, and the rotating shaft body is suspended in the through hole.

Additional advantages and effects of the utility model are set forth in the detailed description and drawings.

Drawings

FIG. 1 is a schematic view of the front side structure of the present utility model;

FIG. 2 is a schematic view of the rear structure of the present utility model;

FIG. 3 is a schematic view of the structure of the wind barrel and the wind grid in a separated state;

FIG. 4 is a schematic view of the internal cross-section of the wind barrel of the present utility model;

Fig. 5 is an enlarged partial view of the position of the rotating shaft in fig. 4.

Detailed Description

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

In the following description, directional or positional relationships such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are presented for convenience in describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

In the existing fog gun using high-pressure water flow as power to drive a rotating shaft to rotate, the high-pressure water flow is mainly led into a flow channel in the rotating shaft by means of a high-pressure pump, then led to a spray pipe by the rotating shaft, finally sprayed out by a plurality of spray heads on the spray pipe to form water mist, and when the spray heads spray the water mist, recoil force is generated, so that the spray pipe is driven to rotate, the rotating spray pipe drives the rotating shaft to rotate, and then blades on the rotating shaft are driven to rotate, so that wind power (or air flow) is formed in a wind barrel of the fog gun, and the water mist is blown out.

For the fog gun, mechanical sealing connection is usually needed between the rotating shaft and the water outlet pipe of the high-pressure pump, so that the rotating shaft body in the mechanical sealing and the rotating shaft can rotate relatively, and under the action of the mechanical sealing, high-pressure water flow output by the high-pressure pump can be ensured to be introduced into the rotating shaft, and the existence of the rotating shaft body can be ensured not to interfere the normal rotation of the rotating shaft.

However, in this fog gun, there are some drawbacks in the installation of the mechanical seal, mainly in that the rotating shaft body of the mechanical seal is directly fixed on the air grid of the air drum, and the rotating shaft is supported by the rotating shaft body and the air drum inner bracket together, so that the rotating shaft body can bear the weight of the rotating shaft, the fan blades and other parts, and therefore, damage of some parts (such as the bearing for butt joint of the rotating shaft) in the rotating shaft body can be accelerated.

Example 1

Based on the above-mentioned problems, as shown in fig. 1 to 5, the present embodiment provides a mounting structure of a mechanical seal of a fog gun for realizing the connection of the mechanical seal and a rotating shaft 2 of the fog gun.

This embodiment includes a mechanical seal and bracket assembly 5 that includes a spindle body 3 for interfacing with the spindle 2.

As shown in fig. 4, the rotating shaft 2 is supported in the wind barrel 1 of the fog gun by the bracket component 5, and the rotating shaft 2 can rotate circumferentially relative to the bracket component 5; i.e. the shaft 2 is essentially supported by the bracket assembly 5, the weight of which is essentially borne by the bracket assembly 5.

Referring to fig. 5, the shaft 2 extends at least partially axially out of the support assembly 5 to form an extension 20, for example, a sleeve is fixedly sleeved at one end of the shaft 2 near the shaft body 3, and the extension 20 is formed by the sleeve.

The rotating shaft body 3 is arranged on the extension part 20 and can rotate relative to the extension part 20, and the rotating shaft body 3 is suspended in the air barrel 1, the suspension is understood that the rotating shaft body 3 is basically not rigidly connected with the air barrel and the air grid of the fog gun except the rotating connection with the extension part 20, and is similar to the rotating shaft body 3 which is suspended on the extension part 20 in a rotatable manner, so that the weight of the rotating shaft 2 and the fan blade 6 on the rotating shaft 2 is basically borne by the bracket component 5, the rotating shaft body 3 can not bear the weight basically, and the problem that some parts (such as bearings) in the rotating shaft body 3 are accelerated to be damaged due to the weight of the rotating shaft 2 and the fan blade 6 can be avoided, and the service life of the whole mechanical seal is prolonged.

In order to enable smoother relative rotation between the rotating shaft body 3 and the extension portion 20, in this embodiment, as shown in fig. 5, the rotating shaft body 3 is mounted on the extension portion 20 through a first bearing 34.

Specifically, the end of the rotating shaft body 3 is provided with a mounting groove 32, the mounting groove 32 is basically in a circumference shape, the first bearing 34 is fixed in the mounting groove 32, and the extension part 20 is arranged in the inner ring of the first bearing 34 in a penetrating manner.

In this embodiment, two or more sets of bracket assemblies 5 are preferably used, and as shown in fig. 4, two sets of bracket assemblies 5 are shown; wherein two or more sets of bracket components 5 are arranged at intervals along the axial direction of the rotating shaft 2, and the rotating shaft 2 is supported by the at least two sets of bracket components 5.

Since the bracket assemblies 5 have substantially the same structure, for convenience of explanation, the embodiment will be specifically described with reference to one group of bracket assemblies 5:

As shown in fig. 3 to 5, the bracket assembly 5 includes a mounting bracket 51 and a second bearing 53, the mounting bracket 51 is fixed in the wind tub 1, the rotating shaft 2 is rotatably mounted on the mounting bracket 51 through the second bearing 53, specifically, a bearing housing 52 is provided on the mounting bracket 51, the second bearing 53 is mounted on the bearing housing 52, and the rotating shaft 2 or the extension 20 is fixed on the second bearing 53.

Example 2

The embodiment further provides a fog gun based on the embodiment 1, which is specifically as follows:

As shown in fig. 1-5, the fog gun provided in this embodiment includes a mounting seat, a wind barrel 1, a rotating shaft 2, fan blades 6, a mechanical seal, and a spray pipe 8; the wind barrel 1 is installed on the installation seat and is supported by the installation seat.

One end of the wind barrel 1 forms an air inlet end, the opposite end forms an air outlet end, the left end of the wind barrel 1 is the air outlet end in the view angle direction shown in fig. 4, and the right end is the air inlet end; as shown in fig. 1, the air outlet end of the air barrel 1 is provided with an air grid 11 to play a role in protection.

As shown in fig. 4, the rotating shaft 2 is disposed in the wind barrel 1, the rotating shaft 2 is internally provided with a flow passage 21 which is axially penetrated, and the fan blades 6 are fixed on the rotating shaft 2. The side of the rotating shaft 2 near the air outlet end forms the extension part 20.

Referring to fig. 2 and fig. 4, the nozzle 8 is fixed on the rotating shaft 2 and is substantially perpendicular to the rotating shaft 2, the nozzle 8 is communicated with the flow channel 21 of the rotating shaft 2, two ends of the nozzle 8 are closed, the nozzles 81 are arranged at two sides of the rotating shaft 2, the water spraying directions of the nozzles 81 are staggered, and thus, when the nozzles 81 at two sides spray water, a recoil force can be generated to drive the nozzle 8 to rotate, and then the nozzle 8 drives the rotating shaft 2 to rotate, so that the purpose that the rotating shaft 2 drives the fan blades 6 to rotate for blowing is achieved; the structure that the spray head 81 sprays water to recoil and drive the rotating shaft 2 to rotate is specifically described in some prior fog guns, so that redundant description is omitted here.

The mechanical seal comprises a rotating shaft body 3, wherein one end of the rotating shaft body 3 is provided with a water inlet hole 31 for being communicated with the water outlet end of the high-pressure pump, namely, high-pressure water flow introduced by the high-pressure pump enters the rotating shaft body 3 through the water inlet hole 31 and finally is guided to a flow channel 21 in the rotating shaft 2. The other end of the rotating shaft body 3 is provided with a mounting groove 32 for interfacing with the extension 20 of the rotating shaft 2.

Wherein, the rotating shaft body 3 and the rotating shaft 2 are specifically connected by adopting the installation structure of the mechanical seal of the fog gun provided in the embodiment 1.

Specifically, the rotating shaft 2 is supported in the wind barrel 1 through the bracket component 5, and the bracket component 5 bears the weight of the rotating shaft 2 and the fan blades 6 thereon, wherein the specific structure of the bracket component 5 is described in the embodiment 1, and details thereof are not described herein.

As shown in fig. 5, the extension 20 is rotatably mounted in the mounting groove 32, and in particular, the shaft body 3 is mounted on the extension 20 through the first bearing 34.

In addition, since the air outlet end of the air barrel 1 is provided with the air grid 11, in order to make the air grid 11 not interfere with the air grid 11, in this embodiment, as shown in fig. 3, a through hole 111 is formed in the middle of the air grid 11, and the air grid 3 is suspended in the through hole 111, that is, the air grid 11 is not contacted with the air grid 3 when the air grid 3 passes through the through hole.

In addition, in this embodiment, the mechanical seal further includes a dynamic seal assembly, and the water inlet hole 31 and the flow channel 21 are in sealing butt joint through the dynamic seal assembly.

Referring to fig. 5, the dynamic seal assembly includes a fixed seat 41, a movable seat 42, two wear-resistant rings 43, and an elastic member, where the fixed seat 41 is fixed at one end of the mounting groove 32 near the water inlet 31, and is stationary relative to the rotating shaft body 3.

The movable seat 42 is movably arranged on the fixed seat 41 along the axial direction of the fixed seat 41 in a penetrating way, i.e. the movable seat 42 can move relative to the fixed seat 41 along the axial direction of the rotating shaft body 3.

The movable seat 42 is internally provided with a channel which axially communicates the water inlet hole 31 with the flow channel 21;

Two wear rings 43 are secured to opposite ends of both the movable seat 42 and the extension 20, respectively, i.e., two wear rings 43, one of which is secured to the end of the movable seat 42 and the other of which is secured to the end of the extension 20.

The elastic member is used for providing elastic force to enable the movable seat 42 to have a trend of moving axially away from the fixed seat 41, so that the two wear-resisting rings 43 keep abutting. Therefore, the two wear-resistant rings 43 are mutually abutted to form a seal, and the two wear-resistant rings 43 are abutted to each other, so that the two wear-resistant rings can rotate relatively, and the rotating shaft body 3 and the rotating shaft 2 can rotate normally relatively.

The elastic member may be a spring 45, specifically, an annular convex step 33 is disposed between the water inlet hole 31 and the mounting groove 32 in the rotating shaft body 3, the spring 45 is disposed on one side of the mounting groove 32, one end of the spring is abutted against the convex step 33, and the other end is abutted against one end of the movable seat 42, which is close to the convex step 33, so that elastic force directed to the rotating shaft 2 by the convex step 33 is applied to the movable seat 42 through the spring 45; in this way, when in operation, under the impact force of the elastic force and the high-pressure water flow introduced from the water inlet hole 31, the movable seat 42 has a tendency to axially move towards the side close to the rotating shaft 2, so that the two wear-resistant rings 43 firmly collide together to form a seal.

In addition, although the two wear rings 43 are abutted together to form a seal, there is a problem of some water leakage between the two wear rings 43, more or less, and in order to drain the water leaked from the two wear rings to the outside of the rotating shaft body 3, a water leakage hole communicating with the mounting groove 32 is generally formed in the rotating shaft body 3, so that the water leaked between the two wear rings 43 is drained.

In this way, although the leakage water can be discharged by directly forming the water leakage hole, the leaked water can directly fall into the air tub 1, so as to avoid the problem, in this embodiment:

As shown in fig. 5, the extending portion 20 is sleeved with a partition plate 44, the partition plate 44 separates the mounting groove 32 to form a drainage cavity 321, the contact surfaces of the two wear-resistant rings 43 are located in the drainage cavity 321, and water leaked between the two wear-resistant rings 43 flows into the drainage cavity 321; the partition 44 has a substantially annular shape, and a first seal ring 441 is interposed between the outer peripheral wall of the partition 44 and the inner peripheral wall of the mounting groove 32, and a second seal ring 442 is interposed between the inner peripheral wall of the partition 44 and the outer peripheral wall of the extension 20.

As shown in fig. 1 and 5, the rotating shaft body 3 is further provided with a drain pipe 7, one end of the drain pipe 7 is communicated with the drain cavity 321, and the other end of the drain pipe is led out of the air drum 1, so that the drain pipe 7 can drain the water in the drain cavity 321 out of the air drum 1 without directly flowing into the air drum 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. The mounting structure of the mechanical seal of the fog gun is used for realizing the connection of the mechanical seal and a rotating shaft of the fog gun and comprises the mechanical seal, and the mechanical seal comprises a rotating shaft body used for being in butt joint with the rotating shaft; the rotating shaft at least partially axially extends out of the outer side of the bracket assembly to form an extension part, the rotating shaft body is arranged on the extension part and can rotate relative to the extension part, and the rotating shaft body is suspended in the wind barrel.

2. The mounting structure of a mechanical seal for a fog gun of claim 1, wherein the shaft body is mounted on the extension by a first bearing.

3. The mounting structure of a mechanical seal for a fog gun of claim 1, wherein the bracket assembly comprises a mounting bracket and a second bearing, the mounting bracket being secured within the wind barrel, the shaft being rotatably mounted to the mounting bracket by the second bearing.

4. A mounting structure for a mechanical seal of a fog gun according to claim 3, wherein the mounting frame is provided with a bearing seat, and the second bearing is mounted on the bearing seat.

5. A mounting structure for a mechanical seal of a fog gun as claimed in claim 3 wherein said bracket assemblies include at least two sets, said at least two sets of bracket assemblies being axially spaced along a rotating shaft, said rotating shaft being supported by said at least two sets of bracket assemblies.

6. The fog gun comprises an air barrel, a rotating shaft, fan blades, a mechanical seal and a spray pipe, wherein the two ends of the air barrel respectively form an air inlet end and an air outlet end, the rotating shaft is internally provided with an axially-through runner, the rotating shaft is arranged in the air barrel, and the fan blades are fixed on the rotating shaft; the spray pipe is arranged at one end of the rotating shaft, which is close to the air inlet end of the air barrel, and is communicated with the flow passage, and spray heads are arranged at two sides of the spray pipe; the mechanical seal comprises a rotating shaft body, wherein one end of the rotating shaft, which is close to the air outlet end of the air barrel, is connected with the rotating shaft body, and the mechanical seal is characterized in that the rotating shaft body is connected with the rotating shaft by adopting the mechanical seal mounting structure of the fog gun according to any one of claims 1-5.

7. The fog gun of claim 6, wherein one end of the rotating shaft body is provided with a water inlet, the other end of the rotating shaft body is provided with a mounting groove, and the extension part is rotatably arranged in the mounting groove; the mechanical seal also comprises a dynamic seal assembly, and the water inlet hole and the runner are in sealing butt joint through the dynamic seal assembly.

8. The fog gun of claim 7, wherein the dynamic seal assembly comprises a fixed seat, a movable seat, two wear-resistant rings and an elastic piece, wherein the fixed seat is fixed at one end of the mounting groove close to the water inlet, the movable seat is axially and movably arranged on the fixed seat along the fixed seat in a penetrating way, and a channel axially communicated with the water inlet and the flow channel is formed in the movable seat; the two wear-resistant rings are respectively fixed at the opposite ends of the movable seat and the extension part; the elastic piece is used for providing elastic force to enable the movable seat to have a trend of moving axially away from the fixed seat so as to enable the two wear-resistant rings to keep abutting.

9. The fog gun of claim 6, wherein the extension is sleeved with a partition board, the partition board separates the mounting groove to form a water draining cavity, and the abutting surface of the two wear-resisting rings is positioned in the water draining cavity; the rotary shaft body is also provided with a drain pipe, one end of the drain pipe is communicated with the drain cavity, and the other end of the drain pipe is led out of the air barrel.

10. The fog gun of claim 7, wherein the air outlet end of the air barrel is provided with an air grid, a through hole is formed in the middle of the air grid, and the rotating shaft body is suspended in the through hole.