Detachable laboratory ventilation device convenient to maintain

Abstract

The utility model relates to the technical field of ventilation devices, and discloses a detachable laboratory ventilation device convenient to maintain, which comprises a ventilation pipeline, a bracket is fixedly connected to the right end of the bottom of the inner side of the ventilation pipeline, a motor is fixedly connected to the top of the bracket, and fan blades are fixedly connected to the left side of the motor. A filter screen is fixedly connected to the left end of the bottom of the inner side of the ventilation pipeline, fixing plates are fixedly connected to the left side and the right side of the top of the ventilation pipeline, bolts are in threaded connection to the four corners of the tops of the two fixing plates, and positioning columns are fixedly connected to the tops of the two fixing plates. The fixing plate is fixed on the ventilating duct through bolts, the positioning columns are inserted into the positioning holes in the bottoms of the connecting columns, the clamping plate is fixed on the top of the fixing plate through bolts, the first connecting plate is fixed on the top of a wall, the fixing ring and the fixing columns connected with the front side and the rear side of the top are fixed on the wall, and therefore supporting performance of the ventilating duct is improved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation device technology, and in particular to a detachable laboratory ventilation device that is easy to maintain. Background Technology

[0002] A detachable laboratory ventilation system designed for easy maintenance is a ventilation device designed to meet laboratory ventilation needs while facilitating maintenance and upkeep. It adopts a modular design and is assembled from multiple pipe sections using quick-connect fittings. Flange or clamp connections are used to facilitate the disassembly and replacement of any problematic pipe section. The pipe material is generally selected to be corrosion-resistant and wear-resistant to adapt to the chemical environment of the laboratory.

[0003] Compared to integrated ventilation systems, detachable laboratory ventilation systems, which are easier to maintain, have relatively poor overall structural stability due to the interconnected components. Vibrations from the fan or external forces can cause these components to loosen, affecting normal operation and potentially leading to damage or detachment. Existing technologies use high-strength bolts and nuts, along with anti-loosening washers, to increase the tightness of the connections. Ventilation systems also employ mortise and tenon joints or locking connections to further enhance the connection and stability. However, in actual use, long-term use can still cause the bolts, nuts, and anti-loosening washers to loosen due to motor vibrations, reducing their support. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a detachable laboratory ventilation device that is easy to maintain. It aims to improve the problem in the prior art that, due to long-term use, bolt and nut connections and anti-loosening washers can still cause the structure to loosen due to motor vibration, thus reducing its support.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a detachable laboratory ventilation device that is easy to maintain, comprising a ventilation duct, a bracket fixedly connected to the bottom right end of the inner side of the ventilation duct, a motor fixedly connected to the top of the bracket, a fan blade fixedly connected to the left side of the motor, a filter screen fixedly connected to the bottom left end of the inner side of the ventilation duct, fixing plates fixedly connected to the top left and right sides of the ventilation duct, bolts threadedly connected to the four corners of the top of the two fixing plates, positioning posts fixedly connected to the top of the two fixing plates, connecting posts slidably connected to the outer walls of the two positioning posts, grooves provided at the bottom front sides of the two positioning posts and connecting posts, slidably connected to the interior of the two grooves, connecting plates fixedly connected to the top of the two connecting posts, a fixing ring slidably connected to the middle of the outer wall of the ventilation duct, fixing posts fixedly connected to the front and rear sides of the top of the fixing ring, and an installation mechanism provided on the outer wall of the filter screen for quick installation of the filter screen.

[0006] As a further description of the above technical solution:

[0007] The installation mechanism includes a fixing sleeve, the inside of which is fixedly connected to the outer wall of the filter screen. A vertical plate is fixedly connected to the top of the fixing sleeve. A slot is opened on the top left side of the ventilation duct. Springs are fixedly connected to the middle of the left and right sides of the vertical plate. A locking block is fixedly connected to the opposite side of the two springs. Circular holes are opened on the left and right sides inside the slot.

[0008] As a further description of the above technical solution:

[0009] A second connecting plate is fixedly connected to the front left end of the ventilation duct, and a warning sign is fixedly connected to the front of the second connecting plate.

[0010] As a further description of the above technical solution:

[0011] A lamp holder is fixedly connected to the top of the fixing ring, and a lighting lamp is fixedly connected to the top of the lamp holder.

[0012] As a further description of the above technical solution:

[0013] Both of the two fixed columns are fixedly connected to diagonal braces on opposite sides, and both diagonal braces are fixedly connected to connecting seats at their tops.

[0014] As a further description of the above technical solution:

[0015] A connecting rod with a smooth design is fixedly connected to the top of the two adjacent fixed columns.

[0016] As a further description of the above technical solution:

[0017] A fixing block is fixedly connected to the top of the upright plate, and a pull ring is fixedly connected to the top of the fixing block.

[0018] As a further description of the above technical solution:

[0019] The diameters of both of the card plates are smaller than the grooves, and the diameters of both of the card blocks are smaller than the circular holes.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the fixing plate is fixed to the ventilation duct by bolts. The positioning post and connecting post at the top of the fixing plate are slidably connected and precisely inserted into the positioning hole. Then, the clamping plate is fixed to the top of the fixing plate by bolts. The connecting plate is fixed to the top of the wall to achieve top support. The fixing ring and the fixing posts connected to the front and rear sides of the top are fixed to the wall to provide support from the side, thereby increasing the support of the ventilation duct.

[0022] 2. In this utility model, the fixing sleeve tightly covers the filter screen, and springs connect the locking blocks on both sides of the upper plate. There is a round hole in the groove at the top of the ventilation duct. During installation, the fixing sleeve carrying the filter screen is aligned with the groove, and the locking blocks are squeezed to compress the spring. After the locking blocks are aligned with the round hole, the spring pushes the locking blocks to lock in, and the filter screen is secure. During disassembly, the operation is reversed, and the locking blocks are squeezed out of the round hole, thereby realizing the ability to quickly remove the filter screen for cleaning and replacement. Attached Figure Description

[0023] Figure 1 This is a perspective view of a detachable laboratory ventilation device that is easy to maintain, as proposed in this utility model.

[0024] Figure 2 The right view shows a detachable laboratory ventilation device that is easy to maintain, as proposed in this utility model.

[0025] Figure 3 This is a split view of the positioning column of a detachable laboratory ventilation device that is easy to maintain, as proposed in this utility model.

[0026] Figure 4 A cross-sectional view of the upright plate of a detachable laboratory ventilation device that is easy to maintain, as proposed in this utility model;

[0027] Figure 5 for Figure 4 Enlarged view of point A.

[0028] Legend:

[0029] 1. Ventilation duct; 2. Installation mechanism; 201. Fixing sleeve; 202. Vertical plate; 203. Groove; 204. Spring; 205. Clamping block; 206. Round hole; 3. Bracket; 4. Motor; 5. Fan blade; 6. Filter screen; 7. Fixing plate; 8. Bolt; 9. Positioning post; 10. Connecting post; 11. Groove; 12. Clamping plate; 13. Connecting plate one; 14. Fixing ring; 15. Fixing post; 16. Connecting plate two; 17. Warning sign; 18. Lamp holder; 19. Lighting lamp; 20. Diagonal brace; 21. Connecting seat; 22. Connecting rod; 23. Fixing block; 24. Pull ring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a detachable laboratory ventilation device that is easy to maintain. It includes a ventilation duct 1, a bracket 3 fixedly connected to the bottom right end of the inner side of the ventilation duct 1, a motor 4 fixedly connected to the top of the bracket 3, and a fan blade 5 fixedly connected to the left side of the motor 4. The output end of the motor 4 drives the fan blade 5 to rotate, drawing indoor air to the outside. A filter screen 6 is fixedly connected to the bottom left end of the inner side of the ventilation duct 1 to filter impurities in the air. Fixing plates 7 are fixedly connected to the top left and right sides of the ventilation duct 1. Bolts 8 are threadedly connected to the four corners of the top of the two fixing plates 7, fixing the fixing plates 7 to the ventilation duct 1. Positioning posts 9 are fixedly connected to the top of the two fixing plates 7. The outer wall is slidably connected with connecting columns 10. Positioning columns 9 are inserted into positioning holes at the bottom of connecting columns 10. Grooves 11 are opened at the bottom front side of both positioning columns 9 and connecting columns 10. Card plates 12 are slidably connected inside both grooves 11. Card plates 12 are inserted into the grooves 11 on the front side of positioning columns 9 and connecting columns 10 and fixed to the top of fixing plate 7 by bolts 8. Connecting plate 13 is fixedly connected to the top of both connecting columns 10 and fixed to the top of the wall. A fixing ring 14 is slidably connected to the middle of the outer wall of ventilation duct 1 to increase the support of ventilation duct 1. Fixing columns 15 are fixedly connected to the front and rear sides of the top of fixing ring 14 and fixed to the wall. An installation mechanism 2 is provided on the outer wall of filter screen 6. The installation mechanism 2 is used for quick installation of filter screen 6.

[0032] Specifically, a bracket 3 is connected to the bottom inner side of the ventilation duct 1, and a motor 4 is fixed to the top of the bracket 3. A fan blade 5 is installed on the left side of the motor 4. When the motor 4 starts, its output end drives the fan blade 5 to rotate at high speed, thereby generating a strong suction force to draw indoor air to the outside, achieving the function of ventilation. A filter screen 6 is provided at the bottom left end of the inner side of the ventilation duct 1. Its function is to filter impurities in the air, prevent dust, particles and other pollutants from entering the ventilation system, and ensure that the exhaust air is relatively clean. Fixing plates 7 are fixedly connected to the top left and right sides of the ventilation duct 1, respectively. Threaded holes are provided at the four corners of the top of the two fixing plates 7. The fixing plates 7 can be firmly fixed to the ventilation duct 1 by bolts 8 engaging with the threaded holes. The top of the two fixing plates 7 is also equipped with... The positioning column 9 has its outer wall slidably connected to the connecting column 10. The positioning column 9 can be accurately inserted into the positioning hole at the bottom of the connecting column 10. Grooves 11 are provided on the front bottom of both the positioning column 9 and the connecting column 10. The clamping plate 12 can be slidably inserted into these grooves 11 and then fixed to the top of the fixing plate 7 by bolts 8. The top of the two connecting columns 10 is fixedly connected to the connecting plate 13, which is used to fix the top of the wall to achieve the top support of the ventilation duct 1. The fixing ring 14 is sleeved in the middle of the outer wall of the ventilation duct 1 to increase the support of the ventilation duct 1. The front and rear sides of the top of the fixing ring 14 are fixedly connected to the fixing column 15, which can be fixed to the wall to provide support for the ventilation duct 1 from the side and ensure the stable operation of the ventilation system.

[0033] Reference Figure 4 and Figure 5 The installation mechanism 2 includes a fixing sleeve 201, which is fixedly connected to the outer wall of the filter screen 6. A vertical plate 202 is fixedly connected to the top of the fixing sleeve 201. A slot 203 is opened on the top left side of the ventilation duct 1. The filter screen 6 inside the fixing sleeve 201 is removed and installed through the slot 203. Springs 204 are fixedly connected to the middle of the left and right sides of the vertical plate 202. A locking block 205 is fixedly connected to the opposite side of the two springs 204. A round hole 206 is opened on the left and right sides of the slot 203. Pressing the locking block 205 compresses the spring 204. When the locking block 205 is aligned with the round hole 206, the spring 204 pushes the locking block 205 into the round hole 206 to form a lock.

[0034] Specifically, the inside of the fixing sleeve 201 is tightly fixed to the outer wall of the filter screen 6, and its top is connected to the upright plate 202. A slot 203 is opened on the left side of the top of the ventilation duct 1, which allows for easy disassembly and installation of the filter screen 6 inside the fixing sleeve 201. A spring 204 is connected to the middle of the left and right sides of the upright plate 202. A locking block 205 is fixed to the end of the spring 204 away from the upright plate 202. The left and right sides of the slot 203 have corresponding round holes 206. During installation, the locking block 205 is squeezed to compress the spring 204. When the locking block 205 is aligned with the round hole 206, the spring 204 pushes the locking block 205 into the round hole 206 to achieve a firm engagement and ensure the stable operation of the filter screen 6.

[0035] Reference Figure 1 and Figure 2 A connecting plate 16 is fixedly connected to the front left end of the ventilation duct 1. A warning sign 17 is fixedly connected to the front of the connecting plate 16 to remind people to pay attention to safety. A lamp holder 18 is fixedly connected to the top of the fixing ring 14. A light 19 is fixedly connected to the top of the lamp holder 18 to increase the working brightness during disassembly. Diagonal braces 20 are fixedly connected to the opposite sides of the two fixing columns 15. A connecting seat 21 is fixedly connected to the top of the two diagonal braces 20 to increase the support of the fixing columns 15.

[0036] Specifically, a connecting plate 16 is connected to the front left end of the ventilation duct 1, and a warning sign 17 is installed on its front side to remind people to pay attention to safety. A lamp holder 18 is installed on the top of the fixing ring 14, and a lighting lamp 19 is fixed on the top of the lamp holder 18. When disassembling and maintaining the ventilation duct 1, it can provide sufficient light to ensure a bright operating environment. On the opposite sides of the two fixing columns 15, diagonal braces 20 are connected respectively. The top of the diagonal braces 20 is connected to the connecting seat 21 to further enhance the support capacity of the fixing columns 15 and ensure the stable operation of the ventilation duct 1.

[0037] Reference Figure 1 and Figure 4 A connecting rod 22 is fixedly connected to the top of the two adjacent fixed columns 15. The connecting rod 22 has a smooth design to increase the connectivity of the two fixed columns 15. A fixing block 23 is fixedly connected to the top of the upright plate 202. A pull ring 24 is fixedly connected to the top of the fixing block 23 to facilitate pulling the fixing sleeve 201. The diameter of the two clamping plates 12 is smaller than the groove 11, and the diameter of the two clamping blocks 205 is smaller than the round hole 206.

[0038] Specifically, a smoothly designed connecting rod 22 is fixed between the tops of the two adjacent fixed posts 15, which enhances the connection between the two fixed posts 15. The top of the upright plate 202 is connected to the fixing block 23, and its top is equipped with a pull ring 24, which makes it easy and convenient to pull the fixing sleeve 201. The diameter of the two clamping plates 12 is smaller than that of the groove 11, and the diameter of the two clamping blocks 205 is smaller than that of the round hole 206. This size design ensures normal sliding and engagement between the components.

[0039] Working principle: When motor 4 starts, its output end drives the fan blade 5 on the left to rotate at high speed. The rotation of fan blade 5 generates strong suction, forming negative pressure, which draws indoor air into ventilation duct 1 and then draws it to the outside, realizing the ventilation function. The filter screen 6 at the bottom left of the inner side of ventilation duct 1 plays a filtering role during air flow, intercepting dust, particles and other pollutants, ensuring that the exhaust air is clean and preventing them from entering the ventilation system and causing damage. The fixing plates 7 on the top left and right sides of ventilation duct 1 are fixed to ventilation duct 1 by bolts 8. The positioning post 9 at the top of the fixing plate 7 is slidably connected to the connecting post 10 and accurately inserted into the positioning hole. Then, the clamping plate 12 is fixed to the top of the fixing plate 7 by bolts 8. The connecting plate 13 at the top of the connecting post 10 is fixed to the top of the wall to achieve top support. The fixing ring 14 in the middle of the outer wall of ventilation duct 1 and the fixing post 15 connected to the front and rear sides of the top are fixed to the wall to provide side support, ensuring the stable operation of the ventilation system and enabling the entire ventilation device to work continuously and efficiently.

[0040] Furthermore, the fixing sleeve 201 is tightly fixed to the outer wall of the filter screen 6. The upright plate 202 is connected to the top of the fixing sleeve 201. Springs 204 are connected to the middle of the left and right sides of the upright plate 202. A locking block 205 is fixed to the other end of the spring 204. A slot 203 is opened on the left side of the top of the ventilation duct 1. The left and right sides of the slot 203 have corresponding round holes 206. The fixing sleeve 201 with the filter screen 6 is aligned with the slot 203 on the left side of the top of the ventilation duct 1. Then, the locking block 205 is pressed. At this time, the spring 204 is compressed by external force. When the locking block 205 moves to the position aligned with the round hole 206, the spring 204 loses the external force and then... The spring 204 will be engaged by pushing the locking block 205 into the round hole 206 using its own elastic potential energy, thus firmly installing the fixing sleeve 201 and the filter screen 6 on the ventilation duct 1. This ensures that the filter screen 6 can work stably in the ventilation system and play its role in filtering air impurities. In contrast to the installation process, when disassembling, the locking block 205 needs to be squeezed again to compress the spring 204 and the locking block 205 will be removed from the round hole 206. After the locking block 205 is completely removed from the round hole 206, the fixing sleeve 201 and the filter screen 6 can be taken out from the slot 203 of the ventilation duct 1 to complete the disassembly operation, so that the filter screen 6 can be cleaned, replaced and other maintenance work.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A removable laboratory fume hood for ease of maintenance comprising a fume duct (1) characterised in that: The inner side bottom right end of the ventilation duct (1) is fixedly connected with a support (3), the top of the support (3) is fixedly connected with a motor (4), the left side of the motor (4) is fixedly connected with a fan blade (5), the inner side bottom left end of the ventilation duct (1) is fixedly connected with a filter screen (6), the top left and right sides of the ventilation duct (1) are fixedly connected with fixed plates (7), the top four corners of the two fixed plates (7) are threadedly connected with bolts (8), the top of the two fixed plates (7) is fixedly connected with positioning columns (9), the outer walls of the two positioning columns (9) are slidably connected with connecting columns (10), the front bottom of the two positioning columns (9) and connecting columns (10) are provided with grooves (11), the interiors of the two grooves (11) are slidably connected with clamping plates (12), the top of the two connecting columns (10) is fixedly connected with connecting plates (13), the outer wall of the ventilation duct (1) is slidably connected with a fixed ring (14), the top front and back sides of the fixed ring (14) are fixedly connected with fixed columns (15), the outer wall of the filter screen (6) is provided with a mounting mechanism (2), and the mounting mechanism (2) is used for quickly mounting the filter screen (6).

2. A removable laboratory fume hood that is easy to maintain according to claim 1, characterized in that: The mounting mechanism (2) comprises a fixed sleeve (201), the inner side of the fixed sleeve (201) is fixedly connected with the outer wall of the filter screen (6), the top of the fixed sleeve (201) is fixedly connected with a vertical plate (202), the top left side of the ventilation duct (1) is provided with a slot (203), the left and right sides of the vertical plate (202) are fixedly connected with springs (204), the sides away from each other of the two springs (204) are fixedly connected with clamping blocks (205), and the left and right sides of the interior of the slot (203) are provided with round holes (206).

3. A removable laboratory fume hood that is easy to maintain as defined in claim 1, wherein: The front left end of the ventilation duct (1) is fixedly connected with a connecting plate (16), and the front side of the connecting plate (16) is fixedly connected with a warning sign (17).

4. A removable laboratory fume hood that facilitates maintenance according to claim 1, wherein: The top of the fixed ring (14) is fixedly connected with a lamp holder (18), and the top of the lamp holder (18) is fixedly connected with a lighting lamp (19).

5. A removable laboratory fume hood that facilitates maintenance according to claim 1, wherein: The sides away from each other of the two fixed columns (15) are fixedly connected with inclined struts (20), and the top of the two inclined struts (20) is fixedly connected with connecting seats (21).

6. A removable laboratory fume hood that facilitates maintenance according to claim 1, wherein: The top of the two fixed columns (15) is fixedly connected with a connecting rod (22), and the connecting rod (22) is designed in a round and smooth manner.

7. A removable laboratory fume hood that facilitates maintenance according to claim 2, wherein: The top of the vertical plate (202) is fixedly connected with a fixed block (23), and the top of the fixed block (23) is fixedly connected with a pull ring (24).

8. A removable laboratory fume hood that facilitates maintenance according to claim 2, wherein: The diameters of the two clamping plates (12) are smaller than the groove (11), and the diameters of the two clamping blocks (205) are smaller than the round hole (206).

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