Air exhaust control mechanism for air supplement of ventilation cabinet

Abstract

The utility model discloses an air exhaust control mechanism for air supplement of a ventilation cabinet, and relates to the technical field of ventilation equipment. The air purification mechanism comprises a mechanism body, a purification assembly is arranged on the left side above the mechanism body and comprises a mounting box, an activated carbon filter plate is arranged on the left side in the mounting box, and a fan is fixed to the left wall of the mounting box; a heating and humidifying assembly is arranged on the right side of the mechanism body and comprises a water tank and a Y-shaped pipe, a water pump is fixed to the upper wall of the water tank, and a heating wire and a spraying head are correspondingly arranged at the two ends of the upper side of the Y-shaped pipe respectively. The activated carbon filter plate is used for filtering harmful substances in exhausted airflow, the heating wire, the spraying head and the water pump are used for adjusting the temperature and humidity during air supply, the problem that in the prior art, the exhausted airflow carrying the harmful substances is directly exhausted to the external environment, pollution is caused to the external environment is solved, and meanwhile the environment is protected. And in the prior art, the temperature and humidity cannot be adjusted during air supply, and use is inconvenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation equipment, and particularly relates to an exhaust control mechanism used for air supply of a fume hood. Background Art

[0002] As a type of ventilation equipment, the fume hood is a safety device used in laboratories and industrial environments to control and remove harmful gases, steam, dust, smoke and other harmful substances to protect the health and safety of experimenters or operators. During the use of the fume hood, in order to maintain the negative pressure environment and good air circulation in the fume hood, it is necessary to add air to the fume hood. In order to achieve a better air supply effect, the air supply intensity is controlled by a control mechanism.

[0003] After retrieval, the authorization announcement number CN211191353U and the authorization announcement date 2020.08.07 disclose an exhaust control mechanism for fume hood air supply, including a fume hood, an exhaust variable air volume valve, a supply air variable air volume valve, and a variable air volume valve controller. The upper surface of the fume hood is connected to the exhaust variable air volume valve and the supply air variable air volume valve. The variable air volume valve controller is respectively connected to the fume hood, the exhaust variable air volume valve and the supply air variable air volume valve. The exhaust variable air volume valve is installed in the exhaust duct, and the bottom of the exhaust duct is connected to the exhaust outlet on the upper surface of the fume hood. The supply air variable air volume valve is installed in the supply duct, and the bottom of the supply duct is connected to the supply outlet on the upper surface of the fume hood. The door opening height of the fume hood is calculated according to the displacement sensor signal acquisition. At different door opening positions, the exhaust volume is increased and the opening of the air supply valve is proportionally controlled to increase the air supply volume, thereby realizing automatic control of the air volume, replenishing outdoor fresh air in the cabinet, reducing the hot and cold exhaust volume of the indoor air conditioner in the room, and achieving the purpose of energy saving. The structure is reasonable, the construction is simple, and it has strong practical performance.

[0004] The existing technology calculates the height of the fume hood door opening based on the displacement sensor signal collection to achieve automatic control of the air volume. However, in actual use, since the exhaust duct is connected to the exhaust fan at one end away from the fume hood, the exhausted airflow carries harmful substances and is directly discharged to the external environment, causing pollution to the external environment. At the same time, the temperature and humidity of the air cannot be adjusted during the existing technology, which is inconvenient to use. For this reason, we provide an exhaust control mechanism for fume hood air supply to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an exhaust control mechanism for fume hood air supply, which filters harmful substances in the exhausted airflow through an activated carbon filter plate, and adjusts the temperature and humidity during air supply through a heating wire, a spray head and a water pump, thereby solving the problem that the exhausted airflow carrying harmful substances in the prior art is directly discharged to the external environment, causing pollution to the external environment, and at the same time, the temperature and humidity during air supply in the prior art cannot be adjusted, which is inconvenient to use.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is an exhaust control mechanism for fume hood air supply, comprising a mechanism body, a purification component is arranged on the left side above the mechanism body, the purification component comprises a mounting box, an activated carbon filter plate is arranged on the left side inside the mounting box, and a fan is fixed on the left wall of the mounting box;

[0008] A heating and humidifying component is arranged on the right side of the mechanism body, and the heating and humidifying component comprises a water tank and a Y-shaped tube. A water pump is fixed on the upper wall of the water tank, and a heating wire and a spray head are respectively arranged at the two ends of the upper side of the Y-shaped tube.

[0009] The utility model is further configured such that an air outlet pipe is fixed on the left wall of the fan, a through groove is opened on the left wall of the installation box, and a retaining bar is fixed on the right side of the activated carbon filter plate corresponding to the inner wall of the installation box.

[0010] The utility model is further configured that a connecting pipe is fixed to the right wall of the installation box, and the connecting pipe is fixedly connected to the exhaust variable air volume valve at one end away from the installation box, and a side plate is fixed to the front wall of the installation box by bolts.

[0011] The utility model is further configured that a liquid inlet pipe is fixed on the right side of the upper wall of the water tank, a pipe cover is connected to the outer thread of the liquid inlet pipe, and a transparent window is fixed on the front wall of the water tank.

[0012] The utility model is further configured such that the lower end of the Y-shaped tube is fixedly connected to the air supply variable air volume valve, a mounting net is fixed to the upper left end of the Y-shaped tube, and the heating wire is fixedly connected to the mounting net.

[0013] The utility model is further configured that a hollow box is fixed on the upper end of the Y-shaped tube, and the spray head is fixedly connected to the hollow box.

[0014] The utility model is further configured such that water pipes are fixed to the water inlet and water outlet of the water pump, the other end of the water pipe at the water inlet of the water pump is located inside the water tank, and the other end of the water pipe at the water outlet of the water pump is fixedly connected to the hollow box.

[0015] The utility model is further configured such that adjustment components are fixed at the four corner positions of the lower wall of the base in the mechanism body, and the adjustment component includes a screw rod, the external thread of the screw rod is connected with a screw sleeve, and the screw sleeve is fixedly connected to the base, and the lower end of the screw rod is fixed with a bottom plate.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model sets an activated carbon filter plate. When exhausting, the airflow carries harmful substances through the activated carbon filter plate, and the physical properties of the activated carbon in the activated carbon filter plate can adsorb the harmful substances in the airflow, thereby achieving a filtering effect and preventing the harmful substances from being discharged into the external environment with the airflow.

[0018] 2. The utility model sets a heating wire and a spray head. When air enters, the airflow can carry the heat generated by the heating wire into the air supply duct to heat the airflow. When the water pump is working, the spray head atomizes the water and sprays it into the Y-shaped tube. The airflow carries the atomized water into the air supply duct to humidify the airflow, thereby achieving the effect of increasing the temperature and humidity of the airflow.

[0019] 3. The utility model sets an adjustment component and operates the corresponding bottom plates to rotate. Under the action of the screw rod, the four bottom plates are all in contact with the ground. When the ground is uneven, the mechanism body can be firmly placed on the ground to prevent installation shaking.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The present invention is a structural schematic diagram of an exhaust control mechanism used for air supply in a fume hood.

[0023] Figure 2 An exploded view of part of the purification component.

[0024] Figure 3 This is an exploded view of part of the structure of the heating and humidification component.

[0025] Figure 4 Schematic diagram of the structure of the adjustment component.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1-purification component, 101-exhaust pipe, 102-fan, 103-installation box, 1031-bar, 104-activated carbon filter plate, 105-side plate, 106-connecting pipe, 2-heating and humidification component, 201-installation net, 202-heating wire, 203-Y-shaped tube, 204-hollow box, 2041-spray head, 205-water pump, 2051-water pipe, 206-water tank, 2061-liquid inlet pipe, 2062-transparent window, 207-tube cover, 3-mechanism body, 301-exhaust variable air volume valve, 302-supply variable air volume valve, 303-base, 4-adjustment component, 401-screw sleeve, 402-screw, 403-bottom plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0030] See also Figure 1-2 The utility model is an exhaust control mechanism for replenishing air in a fume hood, comprising a mechanism body 3, a purification component 1 is arranged on the left side above the mechanism body 3, the purification component 1 comprises a mounting box 103, an activated carbon filter plate 104 is arranged on the left side inside the mounting box 103, a fan 102 is fixed to the left wall of the mounting box 103, harmful substances in the airflow are adsorbed and filtered through the activated carbon filter plate 104, so as to achieve the purpose of directly discharging the harmful substances to the external environment, solving the problem that the airflow discharged in the prior art carries harmful substances and is directly discharged to the external environment, causing pollution to the external environment.

[0031] Specifically, an air outlet pipe 101 is fixed to the left wall of the fan 102, a through groove is opened on the left wall of the installation box 103, a baffle 1031 is fixed to the inner wall of the installation box 103 on the right side of the activated carbon filter plate 104 corresponding to the right side, and the left and right side walls of the activated carbon filter plate 104 are in contact with the installation box 103 and the baffle 1031 respectively. With the above arrangement, the activated carbon filter plate 104 is installed inside the installation box 103, and the baffle 1031 is used to limit the activated carbon filter plate 104.

[0032] A connecting pipe 106 is fixed to the right wall of the installation box 103, and the end of the connecting pipe 106 away from the installation box 103 is fixedly connected to the exhaust variable air volume valve 301. A side panel 105 is fixed to the front wall of the installation box 103 by bolts. The activated carbon filter plate 104 can be replaced or cleaned by removing the side panel 105, and the dust inside the installation box 103 can also be cleaned.

[0033] The purification component 1 is an exhaust control mechanism used for fume hood air supply in the prior art, and the fan 102 is an exhaust fan.

[0034] The operation process of this embodiment is: when in use, connect the power supply of the fan 102. When the fan 102 is working, the airflow carrying harmful substances passes through the connecting pipe 106, the installation box 103, the activated carbon filter plate 104 and the outlet pipe 101 and is discharged to the outside of the outlet pipe 101. During this process, the activated carbon filter plate 104 adsorbs and filters the harmful substances in the airflow to prevent the harmful substances from being discharged into the external environment. Specific embodiment 2

[0036] See also Figure 1 and 3 , which is the second embodiment of the utility model. This embodiment is based on the previous embodiment, but is different from the first embodiment in that: a heating and humidifying component 2 is arranged on the right side of the mechanism body 3, and the heating and humidifying component 2 includes a water tank 206 and a Y-shaped tube 203. A water pump 205 is fixed on the upper wall of the water tank 206, and a heating wire 202 and a spray head 2041 are respectively arranged at both ends of the upper side of the Y-shaped tube 203. The heating wire 202, the spray head 2041 and the water pump 205 are used to adjust the air supply temperature and humidity, thereby solving the problem that the temperature and humidity of the air supply cannot be adjusted in the prior art and is inconvenient to use.

[0037] Specifically, a liquid inlet pipe 2061 is fixed to the right side of the upper wall of the water tank 206, the interior of the liquid inlet pipe 2061 is communicated with the interior of the water tank 206, the external thread of the liquid inlet pipe 2061 is connected with a pipe cover 207, and a transparent window 2062 is fixed to the front wall of the water tank 206. According to the above arrangement, water can be added to the water tank 206 through the liquid inlet pipe 2061 by operating the pipe cover 207 to expose the upper end of the liquid inlet pipe 2061. After adding water, the pipe cover 207 is threadedly connected to the outside of the liquid inlet pipe 2061 to prevent foreign matter from entering the water tank 206, and the water level in the water tank 206 can be easily checked through the transparent window 2062.

[0038] The lower end of the Y-shaped tube 203 is fixedly connected to the air supply variable air volume valve 302 , the upper left end of the Y-shaped tube 203 is fixedly provided with a mounting net 201 , and the heating wire 202 is fixedly connected to the mounting net 201 .

[0039] A hollow box 204 is fixed to the upper end of the Y-shaped tube 203 , and the spray head 2041 is fixedly connected to the hollow box 204 .

[0040] Water pipes 2051 are fixed to the water inlet and outlet of the water pump 205 . The other end of the water pipe 2051 at the water inlet of the water pump 205 is located inside the water tank 206 , and the other end of the water pipe 2051 at the water outlet of the water pump 205 is fixedly connected to the hollow box 204 .

[0041] The installation net 201 is made of metal net.

[0042] The rest of the structure is the same as that of the first embodiment.

[0043] The operation process of this embodiment is as follows: when in use, when the airflow needs to be heated, by making the heating wire 202 work, the airflow carries the heat generated by the heating wire 202 into the Y-shaped tube 203, and then passes through the air supply variable air volume valve 302 to enter the mechanism body 3. When the airflow needs to be humidified, by making the water pump 205 work, the water pump 205 transports the water in the water tank 206 to the hollow box 204, and then passes through the spray head 2041 to spray it out in the form of mist. At this time, the airflow carries the water mist through the air supply variable air volume valve 302 to enter the mechanism body 3. Specific embodiment three

[0045] See also Figure 1 and 4 , which is the third embodiment of the utility model. This embodiment is based on the above two embodiments. This embodiment is different from the above embodiments in that: adjustment components 4 are fixed at the four corner positions of the lower wall of the base 303 in the mechanism body 3, and the adjustment component 4 includes a screw rod 402. The external thread of the screw rod 402 is connected with a screw sleeve 401, and the screw sleeve 401 is fixedly connected to the base 303. The lower end of the screw rod 402 is fixed with a bottom plate 403. By operating the bottom plate 403 to rotate until the bottom plate 403 contacts the ground, the base 303 can obtain better stability when the ground is uneven.

[0046] The rest of the structure is the same as that of the second embodiment.

[0047] The operation process of this embodiment is: during installation, the bottom plate 403 that is not in contact with the ground is rotated to rotate the corresponding screw 402, and the rotation of the screw 402 drives the corresponding bottom plate 403 to rotate and move until all four bottom plates 403 are in contact with the ground, so that the connection stability between the mechanism body 3 and the ground is improved.

[0048] In addition, the electrical appliances in the exhaust control mechanism for fume hood air supply are all electrically connected to the external power supply through conductive wires. At the same time, the electrical appliances in the exhaust control mechanism for fume hood air supply are existing technologies and their models are not limited here.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An exhaust control mechanism for fume hood air supply, comprising a mechanism body (3), characterized in that: A purification component (1) is arranged on the left side above the mechanism body (3), and the purification component (1) comprises a mounting box (103), an activated carbon filter plate (104) is arranged on the left side inside the mounting box (103), and a fan (102) is fixed on the left wall of the mounting box (103); A heating and humidifying component (2) is arranged on the right side of the mechanism body (3), and the heating and humidifying component (2) comprises a water tank (206) and a Y-shaped tube (203). A water pump (205) is fixed to the upper wall of the water tank (206), and a heating wire (202) and a spray head (2041) are respectively arranged at the two ends of the upper side of the Y-shaped tube (203).

2. The exhaust control mechanism for fume hood air supply according to claim 1, characterized in that: An air outlet pipe (101) is fixed to the left wall of the fan (102), a through slot is provided on the left wall of the installation box (103), and a retaining bar (1031) is fixed to the right side of the activated carbon filter plate (104) corresponding to the inner wall of the installation box (103).

3. The exhaust control mechanism for fume hood air supply according to claim 2, characterized in that: A connecting pipe (106) is fixed to the right wall of the installation box (103), and one end of the connecting pipe (106) away from the installation box (103) is fixedly connected to the exhaust variable air volume valve (301), and a side plate (105) is fixed to the front wall of the installation box (103) by bolts.

4. The exhaust control mechanism for fume hood air supply according to claim 1, characterized in that: A liquid inlet pipe (2061) is fixed to the right side of the upper wall of the water tank (206), a pipe cover (207) is threadedly connected to the outside of the liquid inlet pipe (2061), and a transparent window (2062) is fixed to the front wall of the water tank (206).

5. The exhaust control mechanism for fume hood air supply according to claim 1, characterized in that: The lower end of the Y-shaped tube (203) is fixedly connected to the air supply variable air volume valve (302), a mounting net (201) is fixedly provided at the upper left end of the Y-shaped tube (203), and the heating wire (202) is fixedly connected to the mounting net (201).

6. The exhaust control mechanism for fume hood air supply according to claim 5, characterized in that: A hollow box (204) is fixed to the upper end of the Y-shaped tube (203), and the spray head (2041) is fixedly connected to the hollow box (204).

7. The exhaust control mechanism for fume hood air supply according to claim 6, characterized in that: A water pipe (2051) is fixed to both the water inlet and the water outlet of the water pump (205); the other end of the water pipe (2051) at the water inlet of the water pump (205) is located inside the water tank (206); and the other end of the water pipe (2051) at the water outlet of the water pump (205) is fixedly connected to the hollow box (204).

8. The exhaust control mechanism for fume hood air supply according to claim 1, characterized in that: An adjustment component (4) is fixed at each of the four corner positions of the lower wall of the base (303) in the mechanism body (3), and the adjustment component (4) comprises a screw rod (402), the outer thread of the screw rod (402) is connected to a screw sleeve (401), and the screw sleeve (401) is fixedly connected to the base (303), and the lower end of the screw rod (402) is fixed to a bottom plate (403).

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