Pumping and discharging device and oil smoke pumping and discharging equipment

Abstract

The utility model belongs to the technical field of electric appliances, and particularly discloses a pumping and discharging device and oil smoke pumping and discharging equipment. The pumping and draining device comprises a mounting support and at least two pumping and draining parts, the mounting support comprises a fixed support and an adjusting support, the adjusting support and the pumping and draining parts are arranged in a one-to-one correspondence mode, the pumping and draining parts are rotationally mounted at the first ends of the adjusting supports, the rotating axes of all the pumping and draining parts are parallel and arranged at intervals, and the second ends of the adjusting supports are slidably mounted on the fixed support. The distance between every two adjacent pumping and draining pieces is adjusted. The oil fume pumping and discharging equipment comprises an oil fume collecting hood and a pumping and discharging device, the pumping and discharging device is installed on the oil fume collecting hood, the installation support and the pumping and discharging piece are located in the oil fume collecting cavity, and the pumping and discharging piece can form negative pressure at the oil fume inlet through rotation. According to the pumping and discharging device and the oil smoke pumping and discharging equipment disclosed by the utility model, the negative pressure in operation can be increased, the negative pressure action range can be enlarged, the smoke leakage probability can be reduced, the oil smoke pumping and discharging efficiency and the oil smoke pumping and discharging effect can be improved, and the applicability of the pumping and discharging device to smoke collecting cavities with different sizes can be enhanced.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a fume extraction device and a fume extraction equipment. Background Technology

[0002] Range hoods are common kitchen appliances that can extract cooking fumes during cooking to purify the kitchen environment and improve the cooking experience.

[0003] Existing range hoods typically consist of a smoke collection hood and a fan. The smoke collection hood has a smoke inlet and an internal smoke collection chamber. The fan's air inlet is connected to the smoke collection chamber, and its air outlet is connected to the exhaust pipe. When the fan is running, it generates negative pressure at the smoke inlet, which forces the cooking fumes into the smoke collection chamber and then exhausts them to the exhaust pipe.

[0004] The fume extraction capacity of existing range hoods is mainly determined by the negative pressure generated by the fan at the smoke inlet. When the smoke collection chamber is large or the smoke inlet is far from the fan, there may be insufficient local negative pressure at the smoke inlet, which will cause smoke to escape, affecting the fume extraction effect of the range hood and reducing the user experience. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a smoke extraction device that can effectively solve the problem of insufficient negative pressure range leading to smoke leakage in the edge area in existing smoke extraction devices, improve the extraction capacity, and improve the applicability of the smoke extraction device to smoke collection chambers of different sizes.

[0006] The second technical problem solved by this utility model is to provide an oil fume extraction device that can effectively solve the problem of serious smoke leakage caused by insufficient negative pressure generated by the extraction device in existing oil fume extraction devices, reduce the probability of smoke leakage, and improve the efficiency and effect of oil fume extraction.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A pumping device includes a mounting bracket and at least two pumping components. The mounting bracket includes a fixed bracket and an adjusting bracket. The adjusting bracket is configured to correspond one-to-one with each pumping component. Each pumping component is rotatably mounted on a first end of the adjusting bracket. The rotation axes of all pumping components are parallel and spaced apart. The second end of the adjusting bracket is slidably mounted on the fixed bracket to adjust the distance between two adjacent pumping components.

[0009] Compared with the prior art, the extraction device of this utility model has the following advantages: by setting multiple extraction components, the range of negative pressure formed by the extraction device can be increased, thereby increasing the negative pressure at the edge of the smoke inlet, reducing the probability of smoke escape, and improving the extraction effect of oil fumes; at the same time, since the adjusting bracket can slide relative to the fixed bracket to adjust the distance between two adjacent extraction components, the relative position of multiple extraction components can be adjusted according to the size of the smoke collection chamber. This allows the extraction components to be set close to the edge of the smoke collection chamber while effectively avoiding interference between the extraction device and the smoke collection hood. While ensuring the extraction effect of the extraction device on oil fumes, it improves the applicability of the extraction device to smoke collection hoods of different sizes, increases the versatility of the extraction device, and reduces the processing and design costs of the extraction device.

[0010] In one embodiment, the fixed bracket has a plurality of mounting arms spaced apart around a preset axis, and the mounting arms are arranged in a one-to-one correspondence with the adjusting bracket. The first end of the adjusting bracket can be slidably mounted on the corresponding mounting arm along the extension direction of the mounting arm.

[0011] In one embodiment, one of the mounting arm and the adjusting bracket is provided with an adjusting groove, and the other is slidably inserted into the adjusting groove, wherein the adjusting groove extends in the same direction as the mounting arm.

[0012] And / or, one of the mounting arm and the adjusting bracket is provided with an adjusting guide assembly, the adjusting guide assembly being in rolling engagement with the other of the mounting arm and the adjusting bracket;

[0013] And / or, the adjusted bracket is connected to the mounting arm via a connecting structure.

[0014] In one embodiment, one of the mounting arm and the adjusting bracket having the adjusting groove is a first arm and the other is a second arm. The second arm has a mounting groove that extends in the same direction as the adjusting groove.

[0015] The adjustment guide assembly includes multiple rolling elements, which are arranged side by side in the mounting groove, and the rolling elements roll in cooperation with the groove wall of the adjustment slide.

[0016] In one embodiment, the cross-section of the adjusting slide is a concave cross-section, and the portion of the second arm that is inserted into the adjusting slide is a concave structure adapted to the adjusting slide. The two ends of the concave structure of the second arm are respectively provided with mounting grooves, and the adjusting guide component is provided with the mounting grooves in a one-to-one correspondence.

[0017] In one embodiment, the rolling element is a ball, which is rotatably mounted in the mounting groove and is prevented from dislodging from the groove opening;

[0018] Alternatively, the rolling element is rotatably mounted on the opposite sides of the mounting groove via a mounting shaft.

[0019] In one embodiment, the connection structure includes a fixing component and a mating part, one of the mating part and the fixing component being disposed on the adjusting bracket and the other being disposed on the mounting arm. Multiple mating parts are spaced apart along the extending direction of the mounting arm, and the fixing component can be detachably connected to any of the mating parts.

[0020] In one embodiment, the mounting arm and the adjusting bracket are provided with the adjusting groove in one of them as a first arm and the other as a second arm;

[0021] The fixing component is an elastic buckle connected to the second arm, and the mating part is a slot formed in the wall of the adjusting slide, with the elastic buckle engaged in the slot; or, the mating part is a limiting groove provided in the second arm, and the fixing component is a locking threaded part screwed onto the first arm, with the screw end of the locking threaded part extending into the adjusting slide and inserted into the limiting groove.

[0022] In one embodiment, the extraction device includes a drive assembly and a transmission assembly. The drive assembly has an output shaft, and the transmission assembly is connected between the output shaft and all the extraction components. The rotation of the output shaft drives all the extraction components to rotate synchronously.

[0023] In one embodiment, the extraction component is rotatably mounted on the adjusting bracket via a mounting shaft. The transmission assembly includes a driven gear sleeved on the mounting shaft and a driving gear detachably sleeved on the output shaft. The driven gear is configured to correspond one-to-one with the extraction component, and the driving gear meshes with the driven gear.

[0024] And / or, the extraction device further includes a fan, the fan including a volute and an impeller rotatably mounted in the volute, the drive assembly including a drive motor and the output shaft, the drive motor being mounted in the volute and coaxially connected to the impeller, the first end of the output shaft being coaxially connected to the motor shaft of the drive motor, and the second end of the output shaft being connected to the transmission assembly.

[0025] The second technical problem mentioned above is solved by the following technical solution:

[0026] A fume extraction device includes a fume hood with a fume inlet and a fume collection chamber. The fume extraction device also includes an extraction device as described above. The extraction device is installed on the fume hood. The mounting bracket and the extraction device are located in the fume collection chamber. The extraction device can generate negative pressure at the fume inlet by rotation.

[0027] Compared with the prior art, the fume extraction equipment of this utility model has the following advantages: by adopting the above-mentioned extraction device, the extraction capacity of the fume extraction equipment can be improved, the probability of smoke escape can be reduced, and the processing and improvement costs of the fume extraction equipment can be reduced. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the fume extraction device provided in Embodiment 1 of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the smoke hood and fan provided in Embodiment 1 of this utility model;

[0030] Figure 3 This is a schematic diagram of the extraction device provided in Embodiment 1 of the present invention from one perspective.

[0031] Figure 4 A schematic diagram of the extraction device provided in Embodiment 1 of this utility model from another perspective;

[0032] Figure 5 This is a schematic diagram of the mounting bracket provided in Embodiment 1 of this utility model;

[0033] Figure 6 This is a schematic diagram of the disassembled structure of the mounting bracket provided in Embodiment 1 of this utility model;

[0034] Figure 7 for Figure 6 A magnified view of a section at point I;

[0035] Figure 8 A cross-sectional view of the mounting bracket provided in Embodiment 1 of this utility model;

[0036] Figure 9 for Figure 8 A magnified view of a section at point J;

[0037] Figure 10 This is a cross-sectional view of the mounting bracket provided in Embodiment 1 of this utility model at the mounting arm.

[0038] Figure 11 This is a schematic diagram of the structure of the adjustment bracket and adjustment guide assembly provided in Embodiment 2 of this utility model;

[0039] Figure 12A cross-sectional view of the adjustment bracket and adjustment guide assembly is provided for Embodiment 2 of this utility model;

[0040] Figure 13 This is a partial structural schematic diagram of the mounting bracket provided in Embodiment 3 of this utility model;

[0041] Figure 14 A cross-sectional view of the mounting bracket provided in Embodiment 3 of this utility model;

[0042] Figure 15 This is a schematic diagram of the structure of the adjustment bracket provided in Embodiment 3 of this utility model.

[0043] Label Explanation:

[0044] 100. Exhaust device; 200. Smoke hood; 201. Smoke collection chamber; 202. Smoke outlet; 300. Check valve;

[0045] 1. Mounting bracket; 11. Fixed bracket; 111. Central sleeve; 112. Mounting arm; 113. Fixed column; 114. Adjusting slide; 1141. Main groove; 1142. Side groove; 12. Adjusting bracket; 121. Sliding arm; 1211. Main arm; 1212. Side arm; 1213. Mounting groove; 122. Extension arm; 123. Mounting sleeve; 13. Adjusting guide assembly; 131. Rolling element; 132. Mounting shaft; 14. Connecting structure; 141. Fixed component; 141a. Elastic buckle; 1411. Elastic arm; 1412. Buckle; 141b. Locking thread; 142. Mating part; 142a. Slot; 142b. Limiting groove;

[0046] 2. Drawer / exhaust assembly; 21. Drawer / exhaust main body; 22. Mounting shaft;

[0047] 3. Transmission components; 31. Driving gear; 32. Driven gear;

[0048] 4. Fan; 41. Volute; 42. Impeller; 43. Drive motor; 44. Output shaft. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] Example 1

[0054] like Figures 1 to 4 As shown, this embodiment provides a fume extraction device 100 and a fume extraction device including the fume extraction device 100, which is used to extract fumes, reduce the probability of smoke escape, improve the efficiency and effect of fume extraction, and improve the adaptability of the fume extraction device 100 to fume collection hoods 200 of different sizes.

[0055] The fume extraction device provided in this embodiment includes a fume hood 200, an extraction device 100, and an exhaust pipe. The fume hood 200 has a fume collection chamber 201, one side of which is open to form a fume inlet. The extraction device 100 is installed on the fume hood 200 and is used to create a negative pressure at the fume inlet, guiding the external fumes of the fume hood 200 sequentially through the fume inlet, the fume collection chamber 201, and the exhaust pipe for discharge.

[0056] Specifically, in this embodiment, the extraction device 100 includes a mounting bracket 1 and at least two extraction components 2. The mounting bracket 1 includes a fixed bracket 11 and an adjusting bracket 12. The adjusting bracket 12 is arranged in a one-to-one correspondence with the extraction components 2. The extraction components 2 are rotatably mounted on the first end of the adjusting bracket 12. The rotation axes of all extraction components 2 are parallel and spaced apart. The second end of the adjusting bracket 12 is slidably mounted on the fixed bracket 11 to adjust the distance between two adjacent extraction components 2.

[0057] The mounting bracket 1 and the exhaust component 2 are located in the smoke collection chamber 201. When the exhaust device 100 is running, the exhaust component 2 rotates to create a negative pressure at the smoke inlet, guiding the smoke from the smoke inlet into the smoke collection chamber 201, thereby achieving the extraction of oil fumes.

[0058] The extraction device 100 and fume extraction equipment of this embodiment, by setting multiple extraction components 2, can increase the range of negative pressure generated by the extraction device 100, thereby increasing the negative pressure at the edge of the smoke inlet, reducing the probability of smoke escape, and improving the fume extraction effect. At the same time, since the adjusting bracket 12 can slide relative to the fixed bracket 11 to adjust the distance between two adjacent extraction components 2, the relative positions of the multiple extraction components 2 can be adjusted according to the size of the smoke collection chamber 201. This allows the extraction components 2 to be set close to the edge of the smoke collection chamber 201 while effectively avoiding interference between the extraction device 100 and the smoke collection hood 200. While ensuring the fume extraction effect of the extraction device 100, it improves the applicability of the extraction device 100 to smoke collection hoods 200 of different sizes, increases the versatility of the extraction device 100, and reduces the processing and design costs of the extraction device 100.

[0059] It is worth noting that, in one embodiment, the fume extraction device is a top-mounted range hood, whose fume collection hood 200 has a bottom-opening fume inlet, and the fan 4 is installed on the upper side of the fume collection hood 200. In other embodiments, the fume extraction device can be a side-mounted range hood.

[0060] In one embodiment, the extraction device 100 includes a drive assembly and a transmission assembly 3. The drive assembly has an output shaft 44, and the transmission assembly 3 connects the output shaft 44 to all extraction components 2. The rotation of the output shaft 44 drives all extraction components 2 to rotate synchronously via the transmission assembly 3. The output shaft 44 is parallel to and spaced apart from the rotation axes of the extraction components 2. This allows one drive source to operate multiple extraction components 2, reducing the drive cost of the extraction device 100 and simplifying its structure. In other embodiments, each extraction component 2 can be provided with a separate drive assembly, so that each drive assembly independently drives the corresponding extraction component 2 to rotate.

[0061] In one embodiment, the extraction device 100 includes a fan 4, which includes a volute 41 and an impeller 42 rotatably mounted inside the volute 41. The drive assembly includes a drive motor 43, which is mounted on the volute 41. The motor shaft of the drive motor 43 is coaxial with and fixedly connected to the impeller 42. The first end of an output shaft 44 is coaxial with and fixedly connected to the motor shaft of the drive motor 43, and the second end of the output shaft 44 is connected to a transmission assembly 3. The output shaft 44 is parallel to and spaced apart from the rotation axis of the extraction component 2. This arrangement allows the extraction device 100 to use the fan 4 as the main negative pressure source and the extraction component 2 as an auxiliary negative pressure source, thereby improving the overall extraction capacity of the extraction device 100 while reducing the size and energy consumption of a single extraction component 2, and increasing the flexibility of the extraction device 100's configuration.

[0062] In another embodiment, the extraction device 100 may not include a fan 4, meaning that the extraction of fumes is achieved solely through the extraction component 2. In yet another embodiment, the extraction device 100 may include a fan 4, with the drive component and the fan 4 being separate, meaning that the drive source for the fan 4 and the drive source for the extraction component 2 are separate.

[0063] To reduce the space occupied by the exhaust device 100 within the smoke collection chamber 201, in one embodiment, the fan 4 is installed outside the smoke collection hood 200. A smoke outlet 202 is provided on one side of the smoke collection hood 200, which is connected to the air inlet of the fan 4. The output shaft 44 passes through the air inlet and smoke outlet 202 in sequence, extending into the smoke collection chamber 201 and connecting to the transmission assembly 3. The exhaust pipe is connected to the air outlet of the volute 41. Further, a check valve 300 is installed at the air outlet of the volute 41, and the outlet end of the check valve 300 is connected to the exhaust pipe. In other embodiments, the fan 4 can also be located inside the smoke collection chamber 201.

[0064] The fixed bracket 11 is detachably connected to the smoke hood 200 or the volute 41 of the fan 4. In one embodiment, the fixed bracket 11 includes a main frame portion, which is spaced apart from the cavity wall of the smoke collection chamber 201. The main frame portion extends with a fixed column portion 113 in the direction toward the fan 4. Multiple fixed columns 113 are spaced around the smoke outlet 202. One end of the fixed column portion 113 away from the main frame portion is connected to the smoke hood 200 or the volute 41. This arrangement can improve the installation convenience and reliability of the fixed bracket 11 in the smoke hood 200, and improve the practicality of the extraction device 100 for smoke collection chambers 201 of different sizes.

[0065] In other embodiments, the side arm 1212 of the fixed bracket 11 can be connected to the side wall of the smoke collection chamber 201, or the fixed bracket 11 can be fixedly installed on the smoke collection hood 200 using other structures. The specific installation structure of the fixed bracket 11 and the smoke collection hood 200 can be set according to the specific structural form of the smoke collection hood 200, and this utility model does not limit it in this way.

[0066] To improve the ease of installation of the extraction device 100, in one embodiment, the extraction component 2 is rotatably mounted on the side of the mounting bracket 1 facing the smoke inlet, so that the rotation of the extraction component 2 creates negative pressure at the smoke inlet, reducing the interference of the mounting bracket 1 with the negative pressure. The output shaft 44 rotates through the mounting bracket 1 and is connected to the transmission assembly 3.

[0067] The exhaust component 2 includes an exhaust body 21 coaxially connected to an installation shaft 22. The installation shaft 22 is rotatably mounted on the adjustment bracket 12, and the exhaust body 21 rotates to create negative pressure. It is worth noting that the exhaust component 2 can be, but is not limited to, a fan, impeller 42, or other structures that can generate negative pressure by rotation.

[0068] To facilitate the connection between the transmission assembly 3 and each extraction component 2, in one embodiment, the extraction components 2 are spaced apart circumferentially along the output shaft 44, which facilitates the placement of multiple extraction components 2 at different side edges of the smoke collection chamber 201 and also facilitates the structural arrangement of the transmission assembly 3.

[0069] like Figure 3 and Figure 4 As shown, in one embodiment, the transmission assembly 3 includes a driving gear 31 and a driven gear 32. The driven gear 32 is correspondingly arranged with the extraction component 2, and the driven gear 32 is detachably sleeved on the corresponding mounting shaft 22. The driving gear 31 is detachably sleeved on the output shaft 44, and the driven gear 32 is correspondingly arranged with the extraction component 2. The driving gear 31 and the driven gear 32 mesh. The driven gear 32 is relatively fixed to the corresponding output shaft 44, and the driving gear 31 and the output shaft 44 are relatively fixed. This type of transmission assembly 3 has a simple structure and low cost. When the adjusting bracket 12 slides relative to the fixed bracket 11 to adjust the distance between the driving gear 31 and the driven gear 32, changing the model of the driving gear 31 can satisfy the re-meshing of the driving gear 31 and the driven gear 32. This can effectively reduce the structural replacement cost of the extraction device 100 after adjustment, improve the convenience of replacement, and effectively improve the adaptability of the extraction device 100 to smoke collection chambers 201 of different sizes.

[0070] In one embodiment, the second end of the output shaft 44 has a screw section. The screw section passes through the fixed bracket 11 and is screwed with a limiting nut. The drive gear 31 is circumferentially fixedly sleeved on the screw section, and the drive gear 31 is clamped between the fixed bracket 11 and the limiting nut to achieve axial positioning of the drive gear 31 and the output shaft 44, and to facilitate the replacement of the drive gear 31 from the output shaft 44. Furthermore, the cross-section of the screw section is D-shaped, and the center hole of the drive gear 31 is D-shaped to ensure that the drive gear 31 does not rotate relative to the screw section after being sleeved on it.

[0071] like Figure 3 and Figure 4 As shown, in one embodiment, the fixed bracket 11 has a plurality of mounting arms 112 arranged at intervals around a preset axis. The mounting arms 112 are arranged in a one-to-one correspondence with the adjusting bracket 12. The first end of the adjusting bracket 12 can be slidably mounted on the corresponding mounting arm 112 along the extension direction of the mounting arm 112. This can reduce the overall size of the fixed bracket 11 and reduce the influence of the fixed bracket 11 on the pumping resistance.

[0072] Furthermore, the preset axis is the axis of the output shaft 44. Specifically, the fixed bracket 11 also includes a central sleeve 111, and mounting arms 112 are spaced apart circumferentially along the central sleeve 111, through which the output shaft 44 rotates. The main frame includes the aforementioned mounting arms 112 and central sleeve 111, and a fixed column 113 protrudes from the mounting arms 112.

[0073] The adjusting bracket 12 is a long, rod-shaped structure extending along its sliding direction. This improves the ease of sliding connection between the adjusting bracket 12 and the mounting arm 112, while simplifying the structure of the adjusting bracket 12 and reducing the overall structural size and footprint of the mounting bracket 1. To improve the ease of installation of the drawer 2 on the adjusting bracket 12, the first end of the adjusting bracket 12 has a mounting sleeve 123, and the mounting shaft 22 of the drawer 2 is rotatably mounted on the mounting sleeve 123.

[0074] like Figures 5 to 10 As shown, to improve the reliability and smoothness of the sliding of the adjusting bracket 12, in one embodiment, one of the mounting arm 112 and the adjusting bracket 12 is provided with an adjusting groove 114, and the other is slidably inserted into the adjusting groove 114. The extending direction of the adjusting groove 114 is the same as the extending direction of the mounting arm 112. Therefore, the adjusting groove 114 can be used to guide the sliding of the adjusting bracket 12 relative to the mounting arm 112, thereby improving the sliding reliability of the adjusting bracket 12.

[0075] To reduce the resistance of the adjusting bracket 12 during the adjustment process, in one embodiment, one of the mounting arm 112 and the adjusting bracket 12 is provided with an adjusting guide component 13. The adjusting guide component 13 is in rolling engagement with the other of the mounting arm 112 and the adjusting bracket 12, thereby converting at least a portion of the sliding contact between the adjusting bracket 12 and the mounting arm 112 into a rolling engagement, thereby reducing the sliding resistance of the adjusting bracket 12 during adjustment and improving the smoothness of the adjusting bracket 12 during adjustment.

[0076] It is worth noting that in other embodiments, the adjustment guide of the adjustment bracket 12 can also be achieved by adjusting only the slide 114 or only by adjusting the guide component 13.

[0077] For ease of subsequent description, one of the mounting arm 112 and the adjusting bracket 12 with the adjusting groove 114 is defined as the first arm, and the other is defined as the second arm. In one embodiment, the second arm is provided with the aforementioned adjusting guide component 13, which facilitates the installation of the adjusting guide component 13 on the second arm and avoids the problem of increased material thickness requirements for the first arm caused by installing the adjusting guide component 13 on the first arm.

[0078] To improve the ease of installation of the adjustment guide assembly 13 on the second arm, a mounting groove 1213 is provided on the second arm, extending in the same direction as the adjustment slide 114. The adjustment guide assembly 13 includes multiple rolling elements 131, which are arranged side-by-side in the mounting groove 1213 along its extension direction, and the rolling elements 131 roll in cooperation with the wall of the adjustment slide 114. By providing the mounting groove 1213, the installation of the rolling elements 131 is facilitated by positioning and limiting the movement of the rolling elements 131, reducing the probability of the rolling elements 131 dislodging from the second arm, and improving the stability of the adjustment guide assembly 13.

[0079] Furthermore, there are two parallel and spaced mounting grooves 1213, and the adjustment guide component 13 is set in a one-to-one correspondence with the mounting groove 1213 to further improve the smoothness of adjustment of the adjustment bracket 12.

[0080] In one embodiment, the cross-section of the adjusting slide 114 is concave, and the portion of the second arm that inserts into the adjusting slide 114 is a concave structure adapted to the adjusting slide 114. Each end of the concave structure is provided with a mounting groove 1213, and the adjusting guide assembly 13 is correspondingly provided with each mounting groove 1213. This improves the ease of setting the mounting groove 1213 and the adjusting guide assembly 13, and also enhances the sliding stability of the adjusting bracket 12.

[0081] Specifically, the adjusting groove 114 includes two opposing side grooves 1142 and a main groove 1141 communicating between one end of the two side grooves 1142. The cross-sectional shape of at least the portion of the second arm that slides in conjunction with the first arm is adapted to the cross-sectional shape of the adjusting groove 114. That is, the second arm includes a main arm 1211 and two side arms 1212 connected to the main arm 1211 and spaced apart from each other. The main arm 1211 is slidably disposed in the main groove 1141, and the two side arms 1212 are slidably disposed in the two side grooves 1142. A mounting groove 1213 is provided on the side of the side arm 1212 away from the main arm 1211, so that the rolling element 131 makes rolling contact with the bottom of the groove of the side groove 1142.

[0082] In other embodiments, the cross-section of the adjusting groove 114 can be a rectangular structure, and mounting grooves 1213 are provided on opposite sides of the second arm, with the openings of the two mounting grooves 1213 facing away from each other.

[0083] In one embodiment, the rolling element 131 is a ball bearing, which is rotatably mounted in the mounting groove 1213 and is prevented from dislodging from the groove opening of the mounting groove 1213. By setting the rolling element 131 as a ball bearing, the structure of the rolling element 131 can be simplified, the ease of installation and disassembly of the rolling element 131 can be improved, and the resistance of the adjusting bracket 12 can be further reduced. Specifically, the groove opening of the mounting groove 1213 is narrowed, and the width of the groove opening is smaller than the diameter of the ball bearing, thereby preventing the ball bearing from dislodging from the mounting groove 1213.

[0084] In one embodiment, the outer side of the second arm is provided with a limiting step surface, which is located outside the adjusting groove 114 and can abut against the end face of the first arm to limit the depth of the second arm inserted into the adjusting groove 114.

[0085] In one embodiment, the adjusting bracket 12 is the second arm, and the fixed bracket 11 is the first arm. The adjusting bracket 12 includes a sliding arm 121 and an extending arm 122. The sliding arm 121 is slidably inserted into the adjusting groove 114. The cross-section of the sliding arm 121 is smaller than the cross-section of the extending arm 122, so that a limiting step surface is formed at the connection between the adjusting arm and the extending arm 122. The cross-sectional shape of the sliding arm 121 is adapted to the cross-sectional shape of the adjusting groove 114, that is, the sliding arm 121 includes the aforementioned main arm 1211 and side arm 1212. The adjusting guide assembly 13 is mounted on the sliding arm 121. Further, the mounting sleeve 123 is connected to the end of the extending arm 122 away from the sliding arm 121.

[0086] To ensure the stability of the extraction device 100 during use, after the adjusting bracket 12 is adjusted relative to the fixed bracket 11, the two are connected by the connecting structure 14 to ensure the relative position stability of the two, thereby avoiding the problem that the transmission component 3 cannot reliably transmit the driving force to the extraction component 2 due to the movement of the adjusting bracket 12 relative to the fixed bracket 11, thus improving the reliability and safety of the extraction device 100.

[0087] In one embodiment, the connecting structure 14 includes a fixing component 141 and a mating part 142. One of the mating part 142 and the fixing component 141 is disposed on the adjusting bracket 12, and the other is disposed on the mounting arm 112. Multiple mating parts 142 are spaced apart along the extending direction of the mounting arm 112. The fixing component 141 can be detachably connected to any mating part 142. Thus, after the adjusting bracket 12 is adjusted, the fixing component 141 can be detachably connected to the corresponding mating part 142 to achieve a tight fit between the two.

[0088] To improve adjustment convenience, in one embodiment, the fixing component 141 is an elastic buckle 141a connected to the second arm, and the mating part 142 is a slot 142a formed in the wall of the adjustment slide groove 114, with the elastic buckle 141a engaged in the slot 142a. By setting the elastic buckle 141a and the slot 142a to engage, when adjustment is needed, pressing the elastic buckle 141a towards the inside of the first arm disengages it from the slot 142a, allowing the adjustment bracket 12 to slide. When the adjustment bracket 12 slides to its final position, the elastic buckle 141a automatically engages in the slot 142a, achieving a secure fit after adjustment. This makes the adjustment operation of the adjustment bracket 12 simple and quick, improving adjustment efficiency.

[0089] Specifically, the elastic buckle 141a is connected to the end of the sliding arm 121 away from the extending arm 122, and the elastic buckle 141a includes an elastic arm 1411 and a buckle portion 1412. The extending direction of the elastic arm 1411 is the same as the extending direction of the sliding arm 121, and the buckle portion 1412 protrudes from one side of the elastic arm 1411. The buckle portion 1412 can be engaged in the slot 142a. The elastic arm 1411 can deform within the adjusting slide groove 114 so that the buckle portion 1412 can disengage or engage in the slot 142a. A guide surface is provided on the side of the buckle portion 1412 away from the sliding arm 121. The guide surface is inclined away from the elastic arm 1411 in the direction towards the sliding arm 121 to facilitate the buckle portion 1412 engaging in the slot 142a.

[0090] To ensure the connection stability of the fixed bracket 11 and the adjusting bracket 12, two fixed components 141 are provided opposite to each other and spaced apart. The opposite sides of the adjusting slide 114 are provided with locking slots, so as to prevent the adjusting bracket 12 from falling out of the adjusting slide 114.

[0091] Example 2

[0092] This embodiment provides a fume extraction device 100 and a fume extraction device including the fume extraction device 100. The fume extraction device 100 provided in this embodiment has a basically the same structure as that in Embodiment 1, except that the setting of the adjustment guide component 13 is different. This embodiment will not repeat the contents that are the same as those in Embodiment 1.

[0093] like Figure 11 and Figure 12 As shown, in this embodiment, the rolling element 131 is rotatably mounted on the opposite sides of the mounting groove 1213 via the mounting shaft 132. This ensures that the position of the rolling element 131 relative to the adjusting bracket 12 in the extending direction of the mounting arm 112 remains unchanged, improving the stability of the rolling element 131 on the adjusting bracket 12. The rolling element 131 is preferably, but not limited to, a roller, and the extending direction of the mounting shaft 132 is perpendicular to the extending direction of the mounting arm 112.

[0094] Example 3

[0095] This embodiment provides a fume extraction device 100 and a fume extraction device including the fume extraction device 100. The structure of the fume extraction device 100 provided in this embodiment is basically the same as that of the above embodiments, except that the connection structure 14 is different. This embodiment does not limit the structure that is the same as that of the above embodiments.

[0096] like Figures 13 to 15 As shown, in this embodiment, the mating part 142 is a limiting groove 142b provided in the second arm, and the fixing part 141 is a locking threaded part 141b screwed into the first arm. The screw end of the locking threaded part 141b extends into the adjusting slide groove 114 and is inserted into the limiting groove 142b. Thus, by the screw end of the locking threaded part 141b pressing against the second arm, the relative fixation of the adjusting bracket 12 and the fixed bracket 11 is achieved; by screwing the locking threaded part 141b outward, the screw end of the locking threaded part 141b can be disengaged from the limiting groove 142b, and the adjusting bracket 12 can slide relative to the fixed bracket 11.

[0097] Specifically, the mating part 142 is provided on the sliding arm part 121, and the locking threaded part 141b is provided on the mounting arm part 112. To improve the ease of setting the limiting groove 142b, the limiting groove 142b is provided on the side of the sliding arm part 121 away from the adjusting guide assembly 13.

[0098] To improve the ease of tightening the fixing component 141, the fixing component 141 includes a screw and a wing nut that is screwed onto the screw.

[0099] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0100] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pumping device, characterized in that, The device includes a mounting bracket (1) and at least two drawer components (2). The mounting bracket (1) includes a fixed bracket (11) and an adjusting bracket (12). The adjusting bracket (12) is arranged in a one-to-one correspondence with the drawer components (2). The drawer components (2) are rotatably mounted on the first end of the adjusting bracket (12). The rotation axes of all the drawer components (2) are parallel and spaced apart. The second end of the adjusting bracket (12) is slidably mounted on the fixed bracket (11) to adjust the distance between two adjacent drawer components (2).

2. The extraction device according to claim 1, characterized in that, The fixed bracket (11) has a plurality of mounting arms (112) spaced apart around a preset axis. The mounting arms (112) are arranged in a one-to-one correspondence with the adjusting bracket (12). The first end of the adjusting bracket (12) can be slidably mounted on the corresponding mounting arm (112) along the extension direction of the mounting arm (112).

3. The extraction device according to claim 2, characterized in that, One of the mounting arm (112) and the adjusting bracket (12) is provided with an adjusting groove (114), and the other is slidably inserted into the adjusting groove (114). The adjusting groove (114) extends in the same direction as the mounting arm (112). And / or, one of the mounting arm (112) and the adjusting bracket (12) is provided with an adjusting guide assembly (13), the adjusting guide assembly (13) being in rolling engagement with the other of the mounting arm (112) and the adjusting bracket (12); And / or, the adjusted bracket (12) is connected to the mounting arm (112) via a connecting structure (14).

4. The extraction device according to claim 3, characterized in that, The mounting arm (112) and the adjusting bracket (12) are provided with the adjusting slide groove (114). One of them is the first arm and the other is the second arm. The second arm is provided with a mounting groove (1213). The mounting groove (1213) and the adjusting slide groove (114) extend in the same direction. The adjustment guide assembly (13) includes a plurality of rolling elements (131), which are arranged side by side in the mounting groove (1213). The rolling elements (131) roll in cooperation with the groove wall of the adjustment slide (114).

5. The extraction device according to claim 4, characterized in that, The cross-section of the adjusting slide (114) is a concave cross-section. The portion of the second arm that is inserted into the adjusting slide (114) is a concave structure that is adapted to the adjusting slide (114). The two ends of the concave structure of the second arm are respectively provided with mounting grooves (1213). The adjusting guide component (13) is provided with the mounting grooves (1213) in a one-to-one correspondence.

6. The extraction device according to claim 4, characterized in that, The rolling element (131) is a ball, which is rolled in the mounting groove (1213) and is restricted from coming out of the groove of the mounting groove (1213); Alternatively, the rolling element (131) is rotatably mounted on the opposite sides of the mounting groove (1213) via the mounting shaft (132).

7. The extraction device according to claim 3, characterized in that, The connection structure (14) includes a fixing component (141) and a mating part (142). One of the mating part (142) and the fixing component (141) is disposed on the adjusting bracket (12), and the other is disposed on the mounting arm (112). Multiple mating parts (142) are provided at intervals along the extending direction of the mounting arm (112). The fixing component (141) can be detachably connected to any of the mating parts (142).

8. The extraction device according to claim 7, characterized in that, The mounting arm (112) and the adjusting bracket (12) are provided with the adjusting slide groove (114), one of which is the first arm and the other is the second arm; The fixing component (141) is an elastic buckle (141a) connected to the second arm, and the mating part (142) is a slot (142a) formed in the groove wall of the adjusting slide (114), and the elastic buckle (141a) is engaged in the slot (142a); or, the mating part (142) is a limiting groove (142b) provided in the second arm, and the fixing component (141) is a locking threaded part (141b) screwed onto the first arm, and the screw end of the locking threaded part (141b) extends into the adjusting slide (114) and is inserted into the limiting groove (142b).

9. The extraction device according to any one of claims 1-8, characterized in that, The extraction device includes a drive assembly and a transmission assembly (3). The drive assembly has an output shaft (44). The transmission assembly (3) is connected between the output shaft (44) and all the extraction components (2). The rotation of the output shaft (44) drives all the extraction components (2) to rotate synchronously.

10. The extraction device according to claim 9, characterized in that, The extraction component (2) is rotatably mounted on the adjusting bracket (12) via the mounting shaft (22). The transmission component (3) includes a driven gear (32) sleeved on the mounting shaft (22) and a driving gear (31) detachably sleeved on the output shaft (44). The driven gear (32) is arranged in a one-to-one correspondence with the extraction component (2), and the driving gear (31) meshes with the driven gear (32). And / or, the extraction device further includes a fan (4), the fan (4) includes a volute (41) and an impeller (42) rotatably mounted in the volute (41), the drive assembly includes a drive motor (43) and the output shaft (44), the drive motor (43) is mounted in the volute (41) and coaxially connected to the impeller (42), the first end of the output shaft (44) is coaxially connected to the motor shaft of the drive motor (43), and the second end of the output shaft (44) is connected to the transmission assembly (3).

11. A fume extraction device, comprising a fume hood (200) having a fume inlet and a fume collection chamber (201), characterized in that, The fume extraction equipment further includes an extraction device as described in any one of claims 1-10, the extraction device being installed in the fume hood (200), the mounting bracket (1) and the extraction component (2) being located in the fume collection chamber (201), and the extraction component (2) being able to generate negative pressure at the fume inlet by rotation.

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