CN220451929U - Support assembly, coal mine ventilation device and system - Google Patents

Abstract

The utility model specifically discloses a support assembly, a coal mine ventilation device and a system, wherein the support assembly is suitable for installing ventilation equipment in a roadway, the support assembly comprises a support part and a rotating part, and the ventilation equipment is fixedly installed in the roadway through the support part; the rotating component is arranged between the ventilation device and the supporting component and is used for adjusting the angle of the ventilation device relative to the supporting component so as to adjust the drainage direction. The supporting component of the embodiment of the utility model can flexibly adjust the azimuth of the ventilation equipment and optimize the air flow guiding effect in the roadway.

Description

Support assembly, coal mine ventilation device and system

Technical Field

The utility model belongs to the technical field of coal mine safety equipment, and particularly relates to a supporting component, a coal mine ventilation device and a system.

Background

Mine ventilation refers to the input of fresh air into the mine, increasing the oxygen concentration to dilute and remove toxic, harmful gases and dust from the mine. The basic tasks of mine ventilation are: enough fresh air is supplied underground, so that the requirement of personnel on oxygen is met; the underground harmful gas and dust are diluted, so that the safe production is ensured; and the underground climate is regulated, and a good working environment is created. In order to distribute the flow of the down-hole wind along a given route, it is necessary to construct structures, i.e. ventilation facilities, in certain roadways that direct the flow of the wind.

In the related art, the ventilation equipment is directly placed on the ground of a roadway, or is overhead installed in the roadway through a support, but due to the fact that the underground environment of a coal mine is complex, air flow cannot be effectively guided, and the ventilation effect of the coal mine is poor.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides the supporting component which can flexibly adjust the azimuth of the ventilation equipment and optimize the air flow guiding effect in the roadway.

The embodiment of the utility model also provides a coal mine ventilation device.

The embodiment of the utility model also provides a coal mine ventilation system.

The supporting component is suitable for installing ventilation equipment in a roadway, and comprises a supporting component and a rotating component, wherein the ventilation equipment is fixedly installed in the roadway through the supporting component; the rotating component is arranged between the ventilation equipment and the supporting component and is used for adjusting the angle of the ventilation equipment relative to the supporting component so as to adjust the drainage direction.

According to the support assembly provided by the embodiment of the utility model, the position of the ventilation equipment in the roadway can be fixed through the support component, the space arrangement in the roadway is optimized, and the drainage direction of the ventilation equipment can be adjusted through the rotating component.

In some embodiments, the rotating component comprises a first ring body and a limiting piece, the first ring body is fixedly arranged on the side wall of the ventilation device, the supporting component is in matched insertion connection with the first ring body, and the first ring body can rotate relative to the supporting component; the limiting piece is used for limiting rotation between the first ring body and the supporting component.

In some embodiments, the limiting piece comprises a second ring body and a spring, the second ring body is sleeved on the supporting component, the second ring body is movable relative to the supporting component in the length direction of the supporting component, and a limiting prismatic groove and a limiting prismatic strip which are in matched engagement are arranged between the second ring body and the first ring body; the second ring body is provided with a locking position and an opening and closing position, the limiting rib is clamped in the limiting rib groove in the locking position to limit the rotation of the supporting component, the limiting rib is separated from the limiting rib groove in the opening and closing position, and the first ring body can rotate to drive the ventilation equipment to rotate; the spring is abutted with the second ring body to push the second ring body to be sleeved on the first ring body.

In some embodiments, the number of the ventilation devices is multiple, two adjacent ventilation devices are connected through a connecting rod, a rotating part is arranged between each ventilation device and the connecting rod, and supporting parts are arranged between two side walls of the roadway and the corresponding ventilation devices.

In some embodiments, the support assembly further comprises a telescoping member for adjusting the length of the support assembly; at least one supporting component is provided with a telescopic component, or/and at least one connecting rod is provided with a telescopic component.

In some embodiments, the telescoping member comprises a rotating member having an internally threaded section therein and a screw; the outside of screw rod has the external screw thread with the internal thread section matching connection of rotating part, the rotating part pin joint sets up on the spare part that one of them end of flexible part is connected, the screw rod is fixed to be set up on the spare part that the other end of flexible part is connected.

In some embodiments, the support member includes support rods and fixing members, each of which is provided at an outer end portion thereof with the fixing members including a support plate on which a rod body is provided.

The coal mine ventilation device provided by the embodiment of the utility model comprises the support assembly and ventilation equipment.

The coal mine ventilation device provided by the embodiment of the utility model can adaptively arrange the position and the drainage direction of ventilation equipment, so that the wind flow guiding effect of an underground roadway is improved.

In some embodiments, the ventilation device is a fan, an outer frame is arranged on the outer side of the fan, a mounting opening is formed in the outer frame, a dustproof filter screen is arranged on the mounting opening, and the fan and the mounting opening are arranged oppositely.

The coal mine ventilation system comprises the air flow blocking devices and the coal mine ventilation devices, wherein a plurality of groups of the coal mine ventilation devices and a plurality of groups of the air flow blocking devices are respectively arranged in corresponding roadways.

The coal mine ventilation system provided by the embodiment of the utility model can distribute the wind flow in the tunnel along the appointed route, optimize the arrangement position of ventilation equipment in the tunnel and improve the ventilation effect.

Drawings

Fig. 1 is a schematic structural view of a coal mine ventilation apparatus according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of another view of the ventilation device for coal mine according to the embodiment of the present utility model.

Fig. 3 is an enlarged schematic view of the portion a in fig. 2.

Fig. 4 is a schematic structural view of a rotating member according to an embodiment of the present utility model.

Reference numerals:

a coal mine ventilation device 1;

a ventilation device 11, an outer frame 111, a blower 112;

a support member 12, a support rod 121, a fixing member 122, a support plate 1221, and a rod body 1222;

the rotary component 13, the first ring body 131, the second ring body 132, the spring 133, the baffle ring 134, the limit rib groove 135 and the limit rib 136;

the connecting rod 14 is connected to the base,

telescoping member 15, rotating member 151, screw 152.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The supporting component of the embodiment of the utility model is suitable for installing the ventilation equipment 11 in a roadway, because the environment in the roadway is complex, the internal space is limited, water accumulation or other equipment exists on the ground, the air quality of different positions in the roadway is different, the concentration of dust and harmful gas in different heights in the same section is different, for example, the dust and the gas in the roadway are not concentrated in the same area, and the harmful gas and the dust are not concentrated in a certain area due to the reasons of operation or the inclination of the roadway in different roadways, so that the guiding of the airflow in the roadway is important, and the ventilation effect and the environmental quality of the airflow in the roadway are determined by the circulation effect of the airflow.

As shown in fig. 1 and 2, the support assembly according to the embodiment of the utility model comprises a support component 12 and a rotating component 13, the ventilation device 11 is fixedly installed in a roadway through the support component 12, and the spatial position of the ventilation device 11 relative to the roadway is reasonably arranged through the support component 12; the rotating component 13 is arranged between the ventilation device 11 and the supporting component 12, and the rotating component 13 is used for adjusting the angle of the ventilation device 11 relative to the supporting component 12 so as to adjust the drainage direction, so that the air flow in the roadway is guided.

The supporting component of the embodiment of the utility model can fix the position of the ventilation equipment 11 in the roadway through the supporting component 12, optimize the space arrangement in the roadway, the drainage direction of the ventilation equipment 11 can be adjusted through the rotating part 13, so that the wind flow guiding effect of the underground roadway is improved, and ventilation in the roadway can be better realized especially when the underground roadway is faced with a complex underground coal mine environment.

Optionally, the ventilation device 11 is fixed on the roadway side wall through the supporting component 12, and is installed and fixed in a cantilever mode, and the angle adjustment of the ventilation device 11 can be achieved through a group of rotating components 13.

Alternatively, as shown in fig. 1 and 2, the ventilation device 11 is fixed between two side walls of the roadway by respectively providing the support members 12 on two sides of the ventilation device 11, at this time, the rotation members 13 need to be provided on two sides of the ventilation device 11, and when the ventilation device 11 needs to be angularly adjusted, the ventilation device 11 can rotate relative to the two support members 12 on two sides to adjust the drainage direction.

In some embodiments, as shown in fig. 3 and 4, the rotating component 13 includes a first ring 131 and a limiting piece, the first ring 131 is fixedly disposed on a side wall of the ventilation device 11, the supporting component 12 is in mating connection with the first ring 131, and the first ring 131 is rotatable relative to the supporting component 12; the stopper serves to restrict rotation between the first ring body 131 and the support member 12.

Specifically, as shown in fig. 3 and fig. 4, the first ring 131 is in a ring shape with a certain length, one end of the first ring 131 is fixedly arranged on the side wall of the ventilation device 11, the other end of the first ring 131 is open, the end of the support member 12 is inserted into the first ring 131, the end of the support member 12 is propped against the ventilation device 11 at the bottom of the first ring 131, the first ring 131 with a certain length can ensure the effective insertion depth of the support member 12, and the stability between the support member 12 and the ventilation device 11 is improved.

When the drainage direction of the ventilation equipment 11 needs to be adjusted, the limitation of the limiting piece on the first ring body 131 and the supporting part 12 is released, the ventilation equipment 11 is rotated, the ventilation equipment 11 and the first ring body 131 can rotate around the supporting part 12, and after the ventilation equipment 11 is adjusted in place, the first ring body 131 and the supporting part 12 are restrained through the limiting piece, so that the first ring body 131 and the supporting part 12 are prevented from rotating automatically.

Through the setting of first ring body 131 and locating part, can make ventilation equipment 11's wind gap more convenient for the orientation adjustment in tunnel, realize drainage direction's optimization, first ring body 131 also makes between support element 12 and the ventilation equipment 11 detachable connection structure, and the convenience is transported and is assembled in the tunnel, also makes things convenient for later maintenance and overhaul operation.

In some embodiments, as shown in fig. 3 and 4, the limiting member includes a second ring 132 and a spring 133, the second ring 132 is sleeved on the supporting member 12, and the second ring 132 is movable relative to the supporting member 12 in the length direction of the supporting member 12, and a limiting rib groove 135 and a limiting rib 136 which are engaged in a matching manner are provided between the second ring 132 and the first ring 131.

The second ring 132 has a locking position, in which the limiting ribs 136 are clamped in the limiting rib grooves 135 to limit the rotation of the supporting member 12, and an opening position, in which the limiting ribs 136 are separated from the limiting rib grooves 135, and the first ring 131 can rotate to drive the ventilation device 11 to rotate; the spring 133 abuts against the second ring 132 to push the second ring 132 to be sleeved on the first ring 131.

Optionally, as shown in fig. 3 and fig. 4, a retaining ring 134 is disposed on the supporting component 12, one end of the spring 133 is propped against the retaining ring 134, the other end of the spring 133 is propped against the second ring 132, when the second ring 132 contacts the constraint of the first ring 131, the second ring 132 is pulled to compress the spring 133, at this time, the second ring 132 and the limiting ribs 136 and the limiting grooves 135 on the first ring 131 are separated, the ventilation device 11 is rotated to complete the adjustment of the drainage angle, after the second ring 132 is released, the second ring 132 is close to the first ring 131 and completes the sleeving under the action of the spring 133, and the limiting ribs 136 and the limiting grooves 135 are clamped, so as to complete the circumferential limiting.

Through the arrangement of the spring 133, a restoring force can be provided for the second ring 132, so that an effective clamping state is maintained between the first ring 131 and the second ring 132, the second ring 132 is in a locking position, and the assembly stability is improved; through the arrangement of the first ring body 131 and the second ring body 132, the supporting component 12 can be restrained through the first ring body 131, so that the assembly is realized in the axial direction, and the device is flexible and convenient to adjust and convenient to install.

In some embodiments, as shown in fig. 1 and 2, the number of ventilation devices 11 is plural, two adjacent ventilation devices 11 are connected through a connecting rod 14, a rotating component 13 is arranged between the ventilation device 11 and the connecting rod 14, and supporting components 12 are arranged between two side walls of a roadway and the corresponding ventilation devices 11.

Optionally, as shown in fig. 1, ventilation devices 11 are arranged in two, when the width size of the roadway is larger, the number of ventilation devices 11 can be adjusted according to actual demands, for example, three or four ventilation devices are arranged side by side, in order to improve the drainage effect, rotating parts 13 are arranged between the connecting rod 14 and the corresponding ventilation devices 11 and between the ventilation devices 11 and the supporting parts 12, each ventilation device 11 can be independently adjusted in azimuth, so that the complicated underground environment of the coal mine is adapted, the drainage effect is improved, the adjustment of the drainage directions of each ventilation device 11 is relatively independent and does not affect each other, and the overall flexibility is higher.

In some embodiments, as shown in fig. 1 and 2, the support assembly further comprises a telescoping member 15, the telescoping member 15 being used to adjust the length of the support assembly; at least one support member 12 is provided with a telescopic member 15, or/and at least one connecting rod 14 is provided with a telescopic member 15.

Alternatively, when a support member 12 is used to cantilever-mount the ventilator 11, a telescoping member 15 is provided on the support member 12 for adjusting the lateral position of the ventilator 11 within the roadway.

Optionally, as shown in fig. 2, when two support members 12 are used to support and fix the ventilation device 11 between two side walls of the roadway, only one support member 12 may be provided with a telescopic member 15, or both support members 12 may be provided with telescopic members 15, where the provided telescopic members 15 have a function of adjusting the length of the support assembly so as to match the lateral dimension of the roadway, so that the installation is more convenient, and the installation difficulty is reduced; providing two telescopic members 15 allows to determine the lateral position of the ventilation device 11 within the roadway by adjusting the telescopic dimensions of the two telescopic members 15.

Optionally, when there are a plurality of ventilation devices 11 side by side, not only the telescopic members 15 are provided on the support member 12, but also the telescopic members 15 are provided on the connecting rod 14, so that the adjustment of the distance between two adjacent ventilation devices 11 can be achieved, and the guiding effect on the air flow in the roadway can be improved.

In some embodiments, as shown in fig. 2, the telescoping member 15 includes a rotating member 151 and a screw 152, the rotating member 151 having an internally threaded section; the screw 152 has external threads matched and connected with the internal thread section of the rotating member 151, the rotating member 151 is pivotally connected to a part connected to one end of the telescopic member 15, and the screw 152 is fixedly arranged on a part connected to the other end of the telescopic member 15.

Alternatively, as shown in fig. 1, when the telescopic member 15 is disposed on the support member 12, the support member 12 is divided into two coaxial sections, the rotary member 151 is pivotally provided on one section of the support member 12, and the screw 152 is fixedly provided on the other section of the support member 12.

Alternatively, when the telescopic member 15 is disposed on the connecting rod 14, the connecting rod 14 is divided into two coaxial sections, the rotating member 151 is pivotally disposed on one section of the connecting rod 14, and the screw 152 is fixedly disposed on the other section of the connecting rod 14.

As shown in fig. 2, when the entire length adjustment is performed by the telescopic member 15, the rotary member 151 is rotated, and by the screw engagement between the rotary member 151 and the screw 152, a force in one direction is applied to the screw 152, and the screw 152 is caused to perform the telescopic operation in the axial direction with respect to the rotary member 151, thereby completing the length adjustment.

In some embodiments, as shown in fig. 1, the support part 12 includes support rods 121 and fixing members 122, the fixing members 122 are provided at outer ends of the support rods 121, the fixing members 122 include support plates 1221, and the rod bodies 1222 are provided on the support plates 1221.

Alternatively, as shown in fig. 2, the supporting rod 121 is a solid cylindrical rod, when the telescopic member 15 is disposed between the supporting rod 121 and the supporting plate 1221 of the fixing member 122, the rotating member 151 is pivoted at an end of the supporting rod 121, and the rotating member 151 can rotate relative to the supporting rod 121, but the rotating member 151 does not move relative to the supporting rod 121 in the axial direction, so as to facilitate the telescopic action of the screw 152, a counter bore corresponding to the screw 152 may be formed at the end of the supporting rod 121, so as to facilitate the arrangement of the screw 152.

Optionally, as shown in fig. 1, the supporting plate 1221 is a rectangular plate, a plurality of rods 1222 are welded on the supporting plate 1221, and the rods 1222 on the supporting plate 1221 are inserted into the corresponding wall of the roadway side wall, where the rods 1222 can be in tight fit or clearance fit with the wall of the roadway side wall for fixing the ventilation device 11.

When the ventilation device 11 is cantilever-mounted by using a set of support members 12, it is necessary that the rod 1222 be in close fit with the hole in the side wall of the tunnel, or that the rod 1222 be used as a guide support by driving an expansion bolt into the side wall of the tunnel, the expansion bolt further strengthening the support plate 1221.

When two sets of support members 12 are used to support both sides of the ventilation device 11 with the side wall of the roadway and have the telescopic members 15, as shown in fig. 2, holes may be first punched in the side wall of the roadway, the rod 1222 is inserted into the hole of the side wall of the roadway by adjusting the telescopic members 15, and the support plate 1221 is supported on the side wall of the roadway.

Alternatively, the rod 1222 is an expansion bolt, and the support plate 1221 is directly fixed to the side wall of the roadway by the expansion bolt.

Optionally, when the telescopic member 15 is disposed, and the telescopic member 15 is capable of providing a sufficient jacking force in the length direction of the support assembly, the rod 1222 disposed on the support plate 1221 may be replaced with a tooth having a relatively short length, and the fixing of the ventilation device is completed by the engagement of the tooth with the roadway side wall and the jacking force provided after the length adjustment of the telescopic member 15.

As shown in fig. 1 and 2, a coal mine ventilation apparatus 1 according to an embodiment of the present utility model includes a support assembly and ventilation equipment 11 as described above.

In some embodiments, as shown in fig. 1, the ventilation device 11 is a fan 112, an outer frame 111 is disposed outside the fan 112, a mounting opening is disposed on the outer frame 111, a dust-proof filter screen is disposed on the mounting opening, and the fan 112 is disposed opposite to the mounting opening.

The fan 112 adopts explosion-proof motor drive, and the processing and the installation of whole supporting component can be made things convenient for in the setting of outer frame body 111, need not to carry out the change of structure to fan 112 itself, can select not unidimensional outer frame body 111 according to different fan 112 models, and outer frame body 111 can also play the guard action, avoids dust or the water inflow in the tunnel to be in the fan 112. The dustproof filter screen can filter the dust, avoids dust particles to enter into the fan 112, damages internal parts, and prolongs the service life of the fan 112.

The coal mine ventilation system comprises the air flow blocking devices and the coal mine ventilation devices 1, wherein a plurality of groups of the coal mine ventilation devices 1 and a plurality of groups of the air flow blocking devices are respectively arranged in corresponding roadways.

Specifically, the wind flow blocking device can be at least one of a damper, a wind bridge, an explosion-proof door or a wind shielding wall. Through carrying out drainage or choked flow to different tunnel, the effect of adjustment drainage to guarantee the tunnel ventilation effect in colliery underground, carry out quick accurate discharge to the harmful gas that is in different positions.

The mounting manner of the coal mine ventilation apparatus 1 according to the embodiment of the present utility model will be described with reference to fig. 1 to 4:

the ventilation device for coal mine shown in fig. 1 and 2 comprises 2 ventilation devices 11 arranged side by side, and telescopic members 15 are arranged in two support members 12 on both sides of the two ventilation devices 11, and rotary members 13 are arranged on both sides of each ventilation device 11, and a fixing piece 122 in the support members 12 comprises a support plate 1221 and a rod body 1222.

When the two ventilating devices 11 are installed, the two ventilating devices 11 are connected through the connecting rod 14, the two groups of supporting parts 12 are respectively installed on the outer sides of the two ventilating devices 11 (the left side of the ventilating device 11 positioned on the left side and the right side of the ventilating device 11 positioned on the right side in fig. 2), the wind flow direction of the ventilating device 11 is simply adjusted, and large-angle rotation after the ventilating device 11 is installed and fixed in a roadway is avoided; drilling holes in the side wall of the roadway with proper height so as to facilitate the plugging of the rod 1222 after alignment, adjusting the telescopic part 15 to enable the length of the coal mine ventilation device 1 to be slightly smaller than the width dimension of the roadway, conveying the coal mine ventilation device 1 to the position to be installed through hoisting or lifting equipment, adjusting the telescopic part 15 to enable the rod 1222 at the end part of the supporting part 12 to be inserted into the side wall of the roadway, and continuously adjusting the telescopic part 15 to enable the supporting plate 1221 of the supporting part 12 to be propped against the side wall of the roadway. The adjustment of the angle of the ventilation device 11 is accomplished by adjusting the rotating parts 13 at both sides of the ventilation device 11 according to the need of the air flow guiding direction of the corresponding area.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A support assembly adapted to mount a ventilation apparatus within a roadway, the support assembly comprising:

the ventilation equipment is fixedly arranged in the roadway through the support part;

and the rotating part is arranged between the ventilation equipment and the supporting part and is used for adjusting the angle of the ventilation equipment relative to the supporting part so as to adjust the drainage direction.

2. The support assembly of claim 1, wherein the rotating member comprises:

the first ring body is fixedly arranged on the side wall of the ventilation equipment, the supporting part is matched and spliced with the first ring body, and the first ring body can rotate relative to the supporting part;

and the limiting piece is used for restraining the rotation between the first ring body and the supporting part.

3. The support assembly of claim 2, wherein the stop comprises:

the second ring body is sleeved on the supporting component, the second ring body can move relative to the supporting component in the length direction of the supporting component, and a limit rib groove and a limit rib which are in matched engagement are formed between the second ring body and the first ring body;

the second ring body is provided with a locking position and an opening and closing position, the limiting rib is clamped in the limiting rib groove in the locking position to limit the rotation of the supporting component, the limiting rib is separated from the limiting rib groove in the opening and closing position, and the first ring body can rotate to drive the ventilation equipment to rotate;

the spring is abutted with the second ring body to push the second ring body to be sleeved on the first ring body.

4. The support assembly according to claim 1, wherein the number of the ventilation devices is plural, two adjacent ventilation devices are connected through a connecting rod, a rotating part is arranged between the ventilation devices and the connecting rod, and support parts are arranged between two side walls of the roadway and the corresponding ventilation devices.

5. The support assembly of claim 4, further comprising a telescoping member for adjusting the length of the support assembly;

at least one supporting component is provided with a telescopic component, or/and at least one connecting rod is provided with a telescopic component.

6. The support assembly of claim 5, wherein the telescoping member comprises:

a rotating member having an internally threaded section;

the screw rod, the outside of screw rod has the external screw thread of being connected with the internal thread section matching of rotating part, the rotating part pin joint sets up on the spare part that one of them end of flexible part is connected, the screw rod is fixed to be set up on the spare part that the other end of flexible part is connected.

7. The support assembly of claim 1, wherein the support member comprises:

a support rod;

the fixing pieces are arranged at the outer end parts of the support rods respectively and comprise support plates, and rod bodies are arranged on the support plates.

8. A coal mine ventilation apparatus comprising a support assembly as claimed in any one of claims 1 to 7 and ventilation means.

9. The coal mine ventilation device according to claim 8, wherein the ventilation equipment is a fan, an outer frame is arranged on the outer side of the fan, a mounting opening is formed in the outer frame, a dustproof filter screen is arranged on the mounting opening, and the fan is arranged opposite to the mounting opening.

10. A coal mine ventilation system, characterized by comprising a wind flow blocking device and a coal mine ventilation device as claimed in claim 8 or 9, wherein a plurality of groups of the coal mine ventilation devices and a plurality of groups of wind flow blocking devices are respectively arranged in corresponding roadways.