Dilution fan for laboratory

Abstract

The utility model relates to the technical field of fans, and discloses a dilution fan for a laboratory, which comprises a shell, a fan body with a vertically upward air outlet is arranged in the shell, the shell is arranged outdoors, and an air inlet of the shell is communicated with the inside of the laboratory through a pipeline. The outer wall of the lower portion of the shell is provided with a side edge opening below blades of the fan body, the upper surface of the shell is fixedly connected with a rain cover, the rain cover is in a hollow circular truncated cone shape, and the outer diameter of the top of the rain cover is smaller than that of the bottom of the rain cover. And a flow guide cone is arranged above the rain cover. According to the utility model, outdoor air is introduced to dilute the sucked indoor air by adopting a mode of additionally arranging the side opening, and then the indoor air is exhausted outdoors, so that pollution gas is diluted, the rain shielding cover and the flow guide cone are adopted to jointly realize rain shielding for the air outlet, and exhaust air flow cannot flow back while rain shielding is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially, it relates to a dilution fan for laboratory. BACKGROUND

[0002] A certain amount of pollution gas will be produced in the process of doing test in laboratory, the concentration is slightly high at the air outlet of fan in the process of discharging pollution gas with ordinary fan, has certain harm to influence air environment, and the air outlet of existing fan usually does not adopt rain baffle, if adopting rain baffle is also adopting buckle cover type rain baffle, when the discharged airflow reaches below rain baffle, will collide and rebound with the bottom surface of rain baffle, influences the discharge of gas below. SUMMARY

[0003] In order to make up for above insufficient, the utility model provides a dilution fan for laboratory, specific scheme is as follows:

[0004] A dilution fan for laboratory, including the shell, the inside of shell is provided with the vertical upward air outlet fan body, the shell is arranged in outdoor, and its air inlet is communicated with laboratory through pipeline, the lower part outer wall of shell is below the blade of fan body and is provided with side port, the upper surface of shell is fixedly connected with rain cover, the rain cover is hollow circular table shape, and the outer diameter of top is less than the outer diameter of bottom; The upper portion of rain cover is provided with a flow cone, the flow cone gradually decreases from the middle portion to the lower portion, and the lower portion of flow cone is provided with a mounting unit, the mounting unit is used to mount the flow cone above the rain cover.

[0005] Preferably, the inside of the shell is fixedly connected with a protective net above the air outlet of the fan body.

[0006] Preferably, the inside of the side port is fixedly connected with a reinforcing rod, and the outer side of the shell is fixedly connected with a protective cover on the upper side and the lower side of the side port respectively.

[0007] Preferably, the mounting unit includes a support rod, the top of the support rod is rotatably connected to the bottom end of the flow cone, the bottom of the support rod is fixedly connected with a plurality of horizontally arranged fixing rods, and the fixing rods are fixedly connected with the inner wall of the rain cover.

[0008] Preferably, the outer wall surface of the rain cover is fixedly connected with a vertical rod, and the upper end of the vertical rod is fixedly connected with an arc-shaped scraper.

[0009] Preferably, the arc-shaped scraper and the flow cone are mutually adapted, and are attached to the bottom surface of the flow cone.

[0010] Preferably, the upper surface of the flow cone is a tapered surface that tapers upward.

[0011] The utility model has the advantages of the following:

[0012] 1、The utility model discloses a dilution fan for laboratory, which comprises a shell, a fan body, a protective net, a reinforcing rod, a rain shield, a flow guide cone, a mounting unit, a conical solar panel, a vertical rod and an arc-shaped scraper.

[0013] 2、The utility model discloses a dilution fan for laboratory, which comprises a shell, a fan body, a protective net, a reinforcing rod, a rain shield, a flow guide cone, a mounting unit, a conical solar panel, a vertical rod and an arc-shaped scraper. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the dilution fan for laboratory according to the utility model.

[0015] Figure 2 Fig. 2 is a schematic diagram of the shell, the fan body, the protective net and the reinforcing rod of the dilution fan for laboratory according to the utility model.

[0016] Figure 3 Fig. 3 is a schematic diagram of the rain shield, the flow guide cone, the mounting unit, the conical solar panel, the vertical rod and the arc-shaped scraper of the dilution fan for laboratory according to the utility model.

[0017] Figure 4 Fig. 4 is a schematic diagram of the vertical rod and the arc-shaped scraper of the dilution fan for laboratory according to the utility model.

[0018] LEGEND

[0019] 1, shell;2, fan body;3, protective net;4, side edge port;5, reinforcing rod;6, protective cover;7, rain shield;8, flow guide cone;81, support rod;82, fixed rod;9, conical surface;10, vertical rod;11, arc-shaped scraper. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] REFERENCE Figure 1 - Figure 2The utility model provides a kind of dilution fan for laboratory of an embodiment: a kind of dilution fan for laboratory, including shell 1, the inside of shell 1 is provided with fan body 2 of outlet vertical upwards, the shell is set to outdoor, and its air intake is communicated with laboratory by pipeline, fan body 2 can be carried out when starting exhaust, when fan body 2 starts ventilation, laboratory gas can be directly extracted, and is discharged by outlet.

[0022] The outer wall surface of shell 1 is provided with side edge 4, side edge 4 is located below fan body 2, when fan body 2 starts to extract wind, the air intake in the inside of shell 1 can be completed through the air intake below shell 1 and side edge 4, the air entering through air intake and side edge 4 can be mixed in the inside of fan, so that the entering air is more uniform, and the harmful gas entering the inside of shell 1 from air intake is diluted.

[0023] The inside of side edge 4 is fixedly connected with reinforcing rod 5, reinforcing rod 5 can support the inside of side edge 4, improve the strength of shell 1, prolong the service life of fan, the outside of shell 1 is fixedly connected with protective cover 6, protective cover 6 is sleeved in side edge 4, protective cover 6 is inclined to the outside lower side, and side edge 4 is shielded, rainwater can be diverted, to avoid the adverse effects caused by rainwater entering the inside of shell 1 through side edge 4.

[0024] Refer to Figure 1 Figure 3 The upper surface of shell 1 is fixedly connected with rain shield 7, the upper end of rain shield 7 is arranged to the inside of rain shield 7, the upper side of rain shield 7 is provided with flow guide cone 8, flow guide cone 8 can shield the upper space of rain shield 7, and rain shield 7 can shield and protect the gap between shell 1 and flow guide cone 8, so that rain shield 7 can cooperate with flow guide cone 8 to completely shield the upper space of shell 1, to avoid rainwater flowing into the inside of shell 1 to affect the use of fan body 2, flow guide cone 8 is located directly above fan body 2, the tip of flow guide cone 8 is arranged downward, when fan body 2 starts to exhaust air upward, air flow flows to the outside of flow guide cone 8 along the bottom inclined surface of flow guide cone 8 when flowing upward to flow guide cone 8, to reduce the hindrance of the set flow guide cone 8 to gas exhaust.

[0025] ​A mounting unit is arranged below the flow guide cone 8, the mounting unit comprises a support rod 81, the support rod 81 is rotationally connected to the bottom end of the flow guide cone 8, the flow guide cone 8 can rotate relative to the support rod 81, the outer side of the support rod 81 is fixedly connected with a fixed rod 82, one end of the fixed rod 82 away from the support rod 81 is fixedly connected with the inner wall of the rain cover 7, the support rod 81 is fixedly installed in the inside of the rain cover 7 through the fixed rod 82, the flow guide cone 8 can be supported, so that the flow guide cone 8 remains stable use.

[0026] The upper surface of the flow guide cone 8 is a tapered surface 9 that tapers upward. When it rains, rainwater can quickly drain away along the inclined surface of the tapered solar panel 9, avoiding remaining above the flow guide cone 8.

[0027] Referring to Figure 3 Figure 4 The outer wall surface of the rain cover 7 is fixedly connected with a vertical rod 10, the upper end of the vertical rod 10 is fixedly connected with an arc-shaped scraper 11, the size of the arc-shaped scraper 11 is adapted to the size of the flow guide cone 8, the upper surface of the arc-shaped scraper 11 is in close contact with the outer wall surface of the flow guide cone 8, the arc-shaped scraper 11 is stably installed on the outside of the rain cover 7 through the vertical rod 10, when smoke particles are mixed in the upward flowing gas, the smoke particles will adhere to the bottom surface of the flow guide cone 8, affecting the flow guiding effect of the flow guide cone 8, the flow guide cone 8 can be rotated under the action of the airflow at the air outlet, thereby achieving cleaning, or the flow guide cone 8 can be actively rotated by the staff, so that the arc-shaped scraper 11 quickly cleans the inclined surface of the bottom of the flow guide cone 8.

[0028] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.​

Claims

1. A laboratory dilution fan, comprising a housing (1), wherein a fan body (2) with a vertically upward-facing air outlet is disposed inside the housing (1), the housing (1) is located outdoors, and its air inlet is connected to the laboratory via a pipe, characterized in that: The lower outer wall of the housing (1) has a side opening (4) below the blades of the fan body (2). A rain shield (7) is fixedly connected to the upper surface of the housing (1). The rain shield (7) is a hollow frustum shape with a smaller outer diameter at the top than at the bottom. A guide cone (8) is provided above the rain shield (7). The outer diameter of the guide cone (8) gradually decreases from its middle to its lower part. An installation unit is provided below the guide cone (8). The installation unit is used to place the guide cone (8) above the rain shield (7).

2. The laboratory dilution fan according to claim 1, characterized in that: A protective net (3) is fixedly connected inside the housing (1) above the air outlet of the fan body (2).

3. A laboratory dilution fan according to claim 1, characterized in that: A reinforcing rod (5) is fixedly connected inside the side opening (4), and a protective cover (6) is fixedly connected to the outer side of the housing (1) on the upper and lower sides of the side opening (4).

4. A laboratory dilution fan according to claim 1, characterized in that: The installation unit includes a support rod (81), the top of which is rotatably connected to the bottom of the guide cone (8), and a plurality of horizontally arranged fixing rods (82) are fixedly connected to the bottom of the support rod (81), and the fixing rods (82) are fixedly connected to the inner wall of the rain cover (7).

5. A laboratory dilution fan according to claim 4, characterized in that: A vertical rod (10) is fixedly connected to the outer wall surface of the rain cover (7), and an arc-shaped scraper (11) is fixedly connected to the upper end of the vertical rod (10).

6. A laboratory dilution fan according to claim 5, characterized in that: The arc-shaped scraper (11) is adapted to the guide cone (8) and is in contact with the bottom surface of the guide cone (8).

7. A laboratory dilution fan according to claim 1, characterized in that: The upper surface of the guide cone (8) is a tapered surface (9) that tapers upwards.

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