Ventilation device for an explosion-proof analysis cabin

Abstract

This utility model discloses a ventilation and air exchange device for an explosion-proof analytical cabin. The structure includes a cabin body, a mounting box fixed to the cabin body by screws, a first motor mounted on the mounting box, a ventilation fan connected to the output end of the first motor, a clamp and a rubber ring mounted on the inner wall of the mounting box, and a first filter plate detachably connected inside the clamp; and an air exchange unit including a mixing chamber. In use, the air inside the cabin body is filtered by a second filter plate and then enters a transition chamber. When the external air temperature is low, a one-way solenoid valve is opened, allowing a portion of the indoor air to enter the exhaust chamber through a second pipe and be discharged through a vent. Another portion of the indoor air enters the mixing chamber through the first pipe, mixing with the external cold air to raise its temperature before entering the cabin body. This utilizes waste heat to heat the air, preventing condensation of the external cold air inside the cabin and thus preventing moisture damage to the equipment.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, and in particular to a ventilation device for an explosion-proof analysis cabin. Background Technology

[0002] Explosion-proof analysis cabins are protective devices with an all-steel frame structure, housing explosion-proof electrical equipment or combined instruments, and are widely used in oil refining, chemical, and other enterprises. To ensure air quality and safety inside the cabin, ventilation and air exchange devices need to be installed. These devices, such as exhaust fans, draw fresh air from outside into the cabin while expelling stale air, thus achieving air circulation and exchange.

[0003] A ventilation and air exchange device for an explosion-proof analysis cabin, disclosed in publication number CN217303073U, features a cavity between the cabin body and partition that communicates with the air inlet. Heat inside the cabin is released through the cavity via the air outlet and exhaust fan. External air is then filtered through a filter plate and discharged into the cabin through the air inlet and fixed cylinder, thus achieving ventilation and air exchange for the explosion-proof analysis cabin. The fixed cylinder contains a baffle plate, which is spring-clamped to prevent gas from escaping through the air inlet. The air outlet contains a sealing plate and a fixed plate, with the sealing plate spring-clamped to prevent external gas from entering through the outlet. The filter plate can be easily and quickly removed by moving the pressing plate upwards.

[0004] However, although this utility model facilitates ventilation to dissipate heat from the cabin, in winter, when cold outside air is introduced into the relatively warm explosion-proof cabin, water vapor in the air may condense into dew and adhere to the equipment surface or walls, potentially causing safety issues such as equipment dampness or short circuits. Furthermore, the fan blades of this utility model will generate static electricity and attract dust due to friction with the air over a long period of use, requiring frequent cleaning. However, the ventilation fan is installed high up in the cabin, which makes cleaning and maintenance of the fan blades inconvenient. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, to solve the above-mentioned technical problems, this utility model provides the following technical solution: a ventilation and air exchange device for an explosion-proof analysis cabin, which includes:

[0007] The main body of the cabin is fixed with a mounting box by screws. The mounting box is equipped with a first motor. The output end of the first motor is connected to a ventilation fan. The inner wall of the mounting box is equipped with a clamp and a rubber ring. The clamp is detachably connected to a first filter plate.

[0008] The ventilation unit includes a mixing chamber located on the outer wall of one side of the main body of the cabin. A first pipe is installed on the inner bottom wall of the mixing chamber. The bottom of the first pipe is connected to a transition chamber. A second pipe is installed at the bottom of the transition chamber. The bottom of the second pipe is connected to an exhaust chamber. Ventilation holes are provided on the side walls of both the mixing chamber and the exhaust chamber. A one-way solenoid valve is installed on the first pipe.

[0009] The support unit includes a fixing block fixed to the back of the main body of the cabin. A second motor is mounted on the fixing block. A threaded rod is connected to the output end of the second motor. A U-shaped block is threaded onto the surface of the threaded rod. Connecting rods are rotatably connected to both sides of the U-shaped block. A support plate is rotatably connected to one end of the connecting rod. The support plate is rotatably connected to one side of the main body of the cabin.

[0010] As a preferred embodiment of the ventilation and air exchange device for the explosion-proof analysis cabin described in this utility model, a spring is fixed inside the ventilation hole, and a conical block is fixed to one end of the spring.

[0011] As a preferred embodiment of the ventilation and air exchange device for the explosion-proof analysis cabin described in this utility model, one end of the ventilation hole is provided with a conical hole, and the conical block abuts against the conical hole.

[0012] As a preferred embodiment of the ventilation and air exchange device for the explosion-proof analysis cabin described in this utility model, the inner wall of the transition cavity is provided with an installation groove, a bolt and a sealing ring are provided in the installation groove, a second filter plate is sleeved on the surface of the bolt, and a nut is threadedly connected to the surface of the bolt.

[0013] As a preferred embodiment of the ventilation and air exchange device for the explosion-proof analysis cabin described in this utility model, the U-shaped block is further provided with an insertion hole, and a limit rod is inserted into the insertion hole.

[0014] As a preferred embodiment of the ventilation and air exchange device for the explosion-proof analysis cabin described in this utility model, the U-shaped block is slidably connected in a groove opened in the side wall of the cabin body, and the two ends of the limiting rod are fixed in the groove.

[0015] The beneficial effects of this utility model are:

[0016] During use, the air inside the main body of the cabin is filtered by the second filter plate and then enters the transition chamber. When the outside air temperature is low, the one-way solenoid valve is opened, and part of the indoor air enters the exhaust chamber through the second pipe and is discharged through the vent. The other part of the indoor air enters the mixing chamber through the first pipe, mixes with the outside cold air to raise its temperature, and then enters the main body of the cabin. Waste heat is used to heat the air, preventing the outside cold air from condensing inside the cabin and causing the equipment to become damp. When the ventilation fan and the first filter plate of this device are being maintained or cleaned, the second motor is started to rotate the threaded rod, causing the U-shaped block to move downward. The rotation of the connecting rod lifts the bottom end of the support plate, making it parallel to the ground. At this time, the height of the workers can be raised through the support plate, making it easier to remove the high-mounted installation box, making the maintenance of the ventilation fan and the first filter plate more convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of the ventilation and air exchange device for the explosion-proof analysis cabin of this utility model.

[0019] Figure 2 This is a structural schematic diagram of the support unit for the ventilation and air exchange device of the explosion-proof analysis cabin of this utility model.

[0020] Figure 3 This is a cross-sectional structural diagram of the ventilation and air exchange device for the explosion-proof analysis cabin of this utility model.

[0021] Figure 4 This utility model relates to a ventilation and air exchange device for an explosion-proof analysis cabin. Figure 3 Enlarged structural diagram at point A in the middle.

[0022] Figure 5 This utility model relates to a ventilation and air exchange device for an explosion-proof analysis cabin. Figure 3 Enlarged structural diagram at point B.

[0023] In the diagram: 100, main body of the cabin; 101, mounting box; 102, first motor; 103, ventilation fan; 104, clamp; 105, rubber ring; 106, first filter plate;

[0024] 200. Ventilation unit; 201. Mixing chamber; 202. First pipe; 203. Transition chamber; 2031. Bolt; 2032. Sealing ring; 2033. Second filter plate; 2034. Nut; 204. Second pipe; 205. Exhaust chamber; 206. Vent hole; 2061. Spring; 2062. Conical block; 2063. Conical hole; 207. One-way solenoid valve;

[0025] 300, Support unit; 301, Fixing block; 302, Second motor; 303, Threaded rod; 304, U-shaped block; 3041, Limiting rod; 305, Connecting rod; 306, Support plate. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0030] Example 1

[0031] Reference Figure 1-5 This is the first embodiment of the present invention, which provides a ventilation and air exchange device for an explosion-proof analysis cabin. This structure includes:

[0032] The main body of the cabin 100 is fixed to the main body of the cabin 100 by screws. The main body of the cabin 100 is fixed to the main body of the cabin 100 and the mounting box 101 is equipped with a first motor 102. The output end of the first motor 102 is connected to a ventilation fan 103. The inner wall of the mounting box 101 is equipped with a clamp 104 and a rubber ring 105. The clamp 104 is detachably connected to a first filter plate 106. During use, the first motor 102 is started to make the ventilation fan 103 rotate, which draws the outside air into the mounting box 101. After being filtered by the first filter plate 106, it enters the mixing chamber 201. The rubber ring 105 increases the sealing of the part where the mounting box 101 and the main body of the cabin 100 are in contact.

[0033] The ventilation unit 200 includes a mixing chamber 201, which is located on the outer wall of one side of the main body 100 of the cabin. A first pipe 202 is installed on the inner bottom wall of the mixing chamber 201. The bottom of the first pipe 202 is connected to a transition chamber 203. A second pipe 204 is installed at the bottom of the transition chamber 203, and the bottom of the second pipe 204 is connected to an exhaust chamber 205. Ventilation holes 206 are provided on the side walls of both the mixing chamber 201 and the exhaust chamber 205. A one-way solenoid valve 207 is installed on the first pipe 202. During use, when ventilation is required, the ventilation fan 103 rotates to draw outside air into the installation box 101, which then passes through a first filter. After being filtered by plate 106, the air enters the mixing chamber 201. External air pushes the conical block 2062 forward, making the conical hole 2063 unobstructed, allowing air to smoothly enter the cabin body 100 through the vent 206 and the conical hole 2063. When the external air temperature is low, the one-way solenoid valve 207 is opened. The air in the cabin body 100 is filtered by the second filter plate 2033 and enters the transition chamber 203. Part of it enters the exhaust chamber 205 through the second pipe 204 and is discharged through the vent 206. The other part enters the mixing chamber 201 through the first pipe 202, mixes with the external cold air to increase its temperature, and then enters the cabin body 100.

[0034] The support unit 300 includes a fixing block 301, which is fixed to the back of the main body 100 of the cabin. A second motor 302 is mounted on the fixing block 301. The output end of the second motor 302 is connected to a threaded rod 303. A U-shaped block 304 is threadedly connected to the surface of the threaded rod 303. A connecting rod 305 is rotatably connected to both sides of the U-shaped block 304. A support plate 306 is rotatably connected to one end of the connecting rod 305. The support plate 306 is rotatably connected to one side of the main body 100 of the cabin. During use, when it is necessary to maintain and clean the ventilation fan 103 and the first filter plate 106, the second motor 302 is started to rotate the threaded rod 303, causing the U-shaped block 304 to move downward. The rotation of the connecting rod 305 lifts the bottom end of the support plate 306 so that it is parallel to the ground. At this time, the mounting box 101 can be removed by standing on the support plate 306. When not in use, the second motor 302 is rotated in the opposite direction so that the support plate 306 is tightly attached to the main body 100 of the cabin.

[0035] Furthermore, a spring 2061 is fixed inside the vent 206, and a conical block 2062 is fixed to one end of the spring 2061. When the ventilation fan 103 operates and inputs external air into the mixing chamber 201, the air pressure pushes the conical block 2062 forward, allowing the air to smoothly enter the main body 100 of the cabin through the vent 206 and the conical hole 2063.

[0036] Furthermore, a conical hole 2063 is provided at one end of the vent 206, and a conical block 2062 abuts against the conical hole 2063. When the conical block 2062 abuts against the conical hole 2063, it can prevent external air from entering and increase the airtightness of the main body 100 of the cabin.

[0037] Furthermore, the inner wall of the transition cavity 203 is provided with an installation groove, in which a bolt 2031 and a sealing ring 2032 are installed. A second filter plate 2033 is fitted onto the surface of the bolt 2031, and a nut 2034 is threaded onto the surface of the bolt 2031. The second filter plate 2033 is inserted into the installation groove, fitted onto the bolt 2031, and then the nut 2034 is tightened to fix it. The sealing ring 2032 increases the sealing performance of the second filter plate 2033 after installation, preventing air from the main body 100 of the cabin that has not been filtered by the second filter plate 2033 from entering the transition cavity 203.

[0038] Furthermore, the U-shaped block 304 is also provided with an insertion hole, into which a limiting rod 3041 is inserted. When the threaded rod 303 rotates and causes one end of the U-shaped block 304 to move downward, the limiting rod 3041 limits the other end of the U-shaped block 304.

[0039] Furthermore, the U-shaped block 304 is slidably connected in a groove opened in the side wall of the cabin body 100, and the two ends of the limiting rod 3041 are fixed in the groove, providing a sliding track for the U-shaped block 304 through the groove.

[0040] During use, when ventilating, the first motor 102 is started to make the ventilation fan 103 rotate, drawing outside air into the installation box 101. After being filtered by the first filter plate 106, it enters the mixing chamber 201. The outside air pushes the cone block 2062 forward, making the cone hole 2063 unobstructed, allowing the air to smoothly enter the main body 100 of the cabin through the vent hole 206 and the cone hole 2063. The air in the main body 100 of the cabin is filtered by the second filter plate 2033 and enters the transition chamber 203. It then enters the exhaust chamber 205 through the second pipe 204 and is discharged through the vent hole 206, thus achieving ventilation.

[0041] Then, when the outside air temperature is low, the one-way solenoid valve 207 is opened. The air inside the cabin body 100 is filtered by the second filter plate 2033 and enters the transition chamber 203. Part of it enters the exhaust chamber 205 through the second pipe 204 and is discharged through the vent 206. The other part enters the mixing chamber 201 through the first pipe 202, mixes with the outside cold air to increase its temperature, and then enters the cabin body 100.

[0042] Finally, the rubber ring 105 increases the sealing of the part where the mounting box 101 and the main body of the cabin 100 are in contact. When the ventilation fan 103 and the first filter plate 106 need to be maintained and cleaned, the second motor 302 is started to rotate the threaded rod 303, causing the U-shaped block 304 to move downward. The rotation of the connecting rod 305 lifts the bottom end of the support plate 306 so that it is parallel to the ground. At this time, the mounting box 101 can be removed by standing on the support plate 306. When not in use, the second motor 302 is rotated in the opposite direction so that the support plate 306 is tightly attached to the main body of the cabin 100.

[0043] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A ventilation and air exchange device for an explosion-proof analysis cabin, characterized in that: include, The main body of the cabin (100) is fixed with a mounting box (101) by screws. The mounting box (101) is equipped with a first motor (102). The output end of the first motor (102) is connected to a ventilation fan (103). The inner wall of the mounting box (101) is equipped with a clamp (104) and a rubber ring (105). The clamp (104) is detachably connected to a first filter plate (106). The ventilation unit (200) includes a mixing chamber (201), which is located on the outer wall of one side of the main body (100) of the cabin. A first pipe (202) is installed on the inner bottom wall of the mixing chamber (201). The bottom of the first pipe (202) is connected to a transition chamber (203). A second pipe (204) is installed on the bottom of the transition chamber (203). The bottom of the second pipe (204) is connected to an exhaust chamber (205). Ventilation holes (206) are provided on the side walls of both the mixing chamber (201) and the exhaust chamber (205). A one-way solenoid valve (207) is installed on the first pipe (202). The support unit (300) includes a fixing block (301) fixed to the back of the cabin body (100). A second motor (302) is mounted on the fixing block (301). The output end of the second motor (302) is connected to a threaded rod (303). A U-shaped block (304) is threadedly connected to the surface of the threaded rod (303). A connecting rod (305) is rotatably connected to both sides of the U-shaped block (304). A support plate (306) is rotatably connected to one end of the connecting rod (305). The support plate (306) is rotatably connected to one side of the cabin body (100).

2. The ventilation and air exchange device for the explosion-proof analysis cabin as described in claim 1, characterized in that: A spring (2061) is fixed inside the vent (206), and a conical block (2062) is fixed to one end of the spring (2061).

3. The ventilation and air exchange device for the explosion-proof analysis cabin as described in claim 2, characterized in that: One end of the vent (206) is provided with a conical hole (2063), and the conical block (2062) abuts against the conical hole (2063).

4. The ventilation and air exchange device for the explosion-proof analysis cabin as described in claim 1, characterized in that: The inner wall of the transition cavity (203) is provided with an installation groove, and a bolt (2031) and a sealing ring (2032) are provided in the installation groove. A second filter plate (2033) is sleeved on the surface of the bolt (2031), and a nut (2034) is also threaded onto the surface of the bolt (2031).

5. The ventilation and air exchange device for the explosion-proof analysis cabin as described in claim 1, characterized in that: The U-shaped block (304) is also provided with a socket, into which a limit rod (3041) is inserted.

6. The ventilation and air exchange device for the explosion-proof analysis cabin as described in claim 5, characterized in that: The U-shaped block (304) is slidably connected in a groove opened in the side wall of the cabin body (100), and the two ends of the limiting rod (3041) are fixed in the groove.

Images