Building ventilation device

Abstract

The invention discloses a building ventilation device which comprises a ventilation pipeline, a filter screen arranged at an opening of the ventilation pipeline, a cleaning part arranged on the filter screen, a supporting rod fixedly connected to the interior of the ventilation pipeline, a fan fixedly connected to the supporting rod and used for ventilating and driving the cleaning part, a collision rod and a bell part. An air bag is further arranged at the bottom of the baffle, the other end of the air bag penetrates through the side wall of the dust accumulation box and extends to the position below the collision rod, and a sliding plate is further arranged on the air bag and provided with a bell piece; when dust in the dust accumulation box is accumulated to a certain degree, the dust can extrude a baffle to descend along the inner wall of the dust accumulation box, the baffle extrudes a pressure spring and an air bag to start to contract, then the air bag pushes a sliding plate to ascend, the sliding plate ascends to drive a bell piece to ascend, and when a sleeve rod drives a collision rod to rotate, the collision rod can collide with the bell piece; and the bell piece continuously makes a sound to remind a user of cleaning dust accumulated in the dust accumulation box, so that the air exchange efficiency of the device is greatly improved.

Description

[0001] This invention patent application is a divisional application. The original application number is 202411065035.3. The application date is August 5, 2024. The name of the invention is a building ventilation device. Technical Field

[0002] The present application relates to the technical field of waste gas treatment, and in particular to a building ventilation device. Background Art

[0003] Building ventilation devices use various technical means, such as cyclone separation, electrostatic dust removal, wet scrubbing and activated carbon adsorption, to effectively remove harmful particulate matter and pollutants in exhaust gas, ensuring that the exhaust gas meets environmental standards, reducing pollution to the environment and protecting the health of workers. Although some building ventilation devices can clean and collect dust on the filter, existing building ventilation devices cannot actively remind users to clean the dust box during actual use. Summary of the invention

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a building ventilation device, comprising a ventilation duct, a filter screen is installed at the opening of the ventilation duct, a cleaning member is installed on the filter screen, a support rod is fixedly connected in the ventilation duct, a fan for ventilation and driving the cleaning member is fixedly connected on the support rod, the cleaning member comprises an inner shell and an outer shell respectively installed inside and outside the filter screen, a dust box is arranged below the cleaning member, a bevel gear is fixedly connected to the lower end of the outer shell, a second gear is rotatably arranged on one side of the dust box, a sleeve rod is inserted in the middle of the second gear, the bevel gear rack matches the second gear, a reciprocating screw rod is fixedly connected to one end of the sleeve rod, and a push plate is sleeved on the reciprocating screw rod;

[0005] It also includes a striker and a bell piece, wherein the striker is fixedly connected to a sleeve rod located between the dust box and the second gear, a baffle is also provided inside the dust box, and the baffle is elastically connected to the bottom of the dust box through a pressure spring, an airbag is also provided at the bottom of the baffle, and the other end of the airbag passes through the side wall of the dust box and extends to below the striker, a slide plate is also provided on the airbag, and a bell piece is provided on the slide plate.

[0006] Preferably, a sliding groove is provided below the ventilation duct, the dust storage box is slidably connected in the sliding groove, and a pull rope fixedly connected to the dust storage box is also provided in the sliding groove.

[0007] Preferably, the cleaning part includes an inner shell and an outer shell respectively installed on the inner and outer sides of the filter, the inner shell and the outer shell are fixedly connected and arranged in a corresponding state, the inner shell and the outer shell are both fixedly installed with dust sweeping strips, the dust sweeping strips are arranged in a radially fitted manner along the filter, and the inner shell and the outer shell have gaps with the filter.

[0008] Preferably, a counterweight is fixedly connected to the lower end of the inner shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the existing technical solutions, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of a building ventilation device provided in one embodiment of the present application;

[0011] Figure 2 This is a cross-sectional view of a ventilation duct structure of a building ventilation device provided in one embodiment of the present application;

[0012] Figure 3 This is an enlarged view of the structure of part A of a building ventilation device provided in one embodiment of the present application;

[0013] Figure 4 This is an enlarged view of the structure of part B of a building ventilation device provided in one embodiment of the present application;

[0014] Figure 5 This is a schematic diagram of the structure of a cleaning component of a building ventilation device provided in one embodiment of the present application;

[0015] Figure 6 It is a schematic diagram of the gear set structure of a building ventilation device provided in one embodiment of the present application.

[0016] In the figure: 1. ventilation duct; 2. support rod; 3. fan; 4. first gear; 5. gear set; 6. internal gear; 7. transmission rod; 8. cleaning part; 9. filter; 10. counterweight; 11. bevel rack; 12. second gear; 13. sleeve rod; 14. striker rod; 15. reciprocating screw rod; 16. push plate; 17. dust box; 18. rope; 19. baffle; 20. pressure spring; 21. air bag; 22. slide plate; 23. bell part; 81. outer shell; 82. inner shell; 83. dust sweeping strip. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] See also Figure 1-6As shown in the figure, a building ventilation device provided in this embodiment includes a ventilation duct 1 and a fan 3, the fan 3 is fixedly connected to the ventilation duct 1 through a support rod 2, and a fan blade is fixedly connected to the output shaft of the fan 3. A filter screen 9 is provided at the opening of the ventilation duct 1, and a cleaning member 8 driven by the fan 3 is provided on the filter screen 9. A dust box 17 is provided below the cleaning member 8. Preferably, when the cleaning member 8 rotates to above the dust box 17, the dust in the cleaning member 8 can automatically fall into the dust box 17.

[0019] Specifically, a support rod 2 is fixedly connected to the inside of the ventilation duct 1, and a fan 3 is fixedly connected to the support rod 2. A fan blade is fixedly connected to one end of the fan 3 close to the filter 9. When working, the fan 3 can drive the fan blade to rotate, thereby forming an airflow in the ventilation duct 1. At the same time, the fan 3 can also drive the cleaning member 8 to rotate on the filter 9. When the cleaning member 8 rotates downward to above the dust storage box 17, the dust swept into the cleaning member 8 will automatically fall into the dust storage box 17 under the action of gravity for collection and storage, thereby preventing the dust from being adsorbed onto the filter 9 again due to the wind force generated by the fan 3.

[0020] Furthermore, the cleaning member 8 includes an outer shell 81 installed on the outside of the filter 9 and an inner shell 82 installed on the inside of the filter 9. The transmission rod 7 passes through the center of the filter 9 and is fixedly connected to the outer shell 81 and the inner shell 82. Both the outer shell 81 and the inner shell 82 are provided with dust sweeping strips 83 arranged radially along the filter 9, and the dust sweeping strips 83 are arranged in close contact with the filter 9.

[0021] Specifically, the cleaning member 8 includes an outer shell 81, an inner shell 82 and a dust sweeping strip 83. The outer shell 81 and the inner shell 82 are fixedly connected to the transmission rod 7. When the transmission rod 7 rotates, it can drive the outer shell 81 and the inner shell 82 to rotate synchronously. There are gaps between the outer shell 81 and the inner shell 82 and the filter 9. Preferably, the dust sweeping strip 83 is trapezoidal.

[0022] It can be understood that when sweeping dust, the reserved gap prevents the dust on the filter 9 from being scraped off in advance by the outer shell 81 and the inner shell 82. When the dust enters the outer shell 81 and the inner shell 82, the trapezoidal dust-sweeping strip 83 will scrape off the dust on the filter 9, and then the dust can be temporarily stored between the outer shell 81 and the inner shell 82. At the same time, the outer shell 81 and the inner shell 82 can also protect the dust from being affected by the wind force of the fan 3, preventing the wind generated by the fan 3 from driving the dust to accumulate on the filter 9 again, or passing through the filter 9 and adhering to the fan blades and the fan 3, thereby affecting the working efficiency of the fan 3; when the cleaning part 8 rotates to above the dust storage box 17, the dust stored in the outer shell 81 and the inner shell 82 will slide down into the dust storage box 17 under the action of gravity.

[0023] It should be noted that, although the above embodiment has realized the cleaning and collection of dust, and prevented the dust from re-accumulating on the filter screen 9 under the wind adsorption of the fan 3, when the cleaning member 8 is directly driven by the fan 3, the rotation speed of the cleaning member 8 is too fast, which not only affects the ventilation efficiency and the life of the components, but also causes part of the dust to be thrown out prematurely due to the centrifugal force generated by the rotation, and cannot be effectively collected. Therefore, the cleaning member 8 can also be further designed, as shown below:

[0024] Please read further Figure 6 One end of the transmission rod 7 is transmission-connected to the fan 3, and the other end of the transmission rod 7 is provided with a cleaning member 8. The output end of the fan 3 is also transmission-connected to the transmission rod 7, and the end of the transmission rod 7 away from the fan 3 is fixedly connected to the cleaning member 8. A gear set 5 and an internal gear 6 are also provided in the ventilation duct 1. The center position of the internal gear 6 is fixedly connected to the transmission rod 7, and the internal teeth of the internal gear 6 are meshed with the protruding gear at the center position of the gear set 5. The internal teeth of the gear set 5 are meshed with the first gear 4 installed on one side of the fan blade of the fan 3; when the fan 3 is working, it drives the transmission rod 7 to rotate, thereby driving the cleaning member 8 to rotate.

[0025] Specifically, the inner side of the gear set 5 is provided with internal teeth, the middle position of the gear set 5 is also provided with a protruding gear protruding outward, the inner side of the internal gear 6 is also provided with internal teeth, and the middle position of the internal gear 6 is fixedly connected with a transmission rod 7, and the internal gear 6 can drive the transmission rod 7 to rotate synchronously. In addition, the gear set 5 can be rotatably fixed to one side of the internal gear 6 in the ventilation duct 1 through a connecting rod; the fan blade of the fan 3 is fixedly connected to the side close to the filter 9, and the outer wall of the first gear 4 is meshed with the inner teeth of the gear set 5. When the first gear 4 rotates, it can drive the gear set 5 to rotate; the protruding gear at the center position of the gear set 5 is meshed with the inner teeth of the internal gear 6, and when the gear set 5 rotates, it can drive the internal gear 6 to rotate, and then drive the transmission rod 7 to rotate; through the arrangement of the gear set 5 and the internal gear 6, the rotation speed of the cleaning member 8 is reduced to prevent the cleaning member 8 from rotating too fast, avoid affecting the ventilation efficiency and service life, and prevent some dust from being thrown out prematurely due to the centrifugal force generated by the rotation.

[0026] For further information, please refer to Figure 4 A dust box 17 is provided under the cleaning member 8, and the dust box 17 is slidably connected to the bottom of the ventilation duct 1. A second gear 12 is rotatably provided on one side of the dust box 17. A sleeve rod 13 is inserted into the center position of the second gear 12, and a reciprocating screw rod 15 is fixedly connected to one end of the sleeve rod 13. The reciprocating screw rod 15 passes through the upper part of the interior of the dust box 17, and a push plate 16 is also sleeved on the reciprocating screw rod 15. A bevel rack 11 is also provided at the lower end of the outer shell 81 of the cleaning member 8, and the bevel rack 11 matches the second gear 12.

[0027] Specifically, the dust box 17 is located below the cleaning member 8. When the cleaning member 8 is in a vertical downward position, the opening at the lower end of the cleaning member 8 is located at the opening at the upper end of the dust box 17. The second gear 12 is rotatably connected to the interior of the ventilation duct 1, and is located on the side of the dust box 17 away from the fan 3. The lower end of the outer wall of the outer shell 81 of the cleaning member 8 is fixedly connected with a bevel rack 11, and the bevel rack 11 matches the second gear 12. During the rotation of the cleaning member 8, when the bevel rack 11 rotates to the second gear 12, it can engage with the second gear 12, thereby driving the second gear 12 to rotate.

[0028] It can be understood that when working, the fan 3 can be started to drive the fan blades to rotate to extract gas for ventilation. In this process, the fan 3 will also drive the first gear 4 on one side of the fan blade to rotate. The rotation of the first gear 4 will drive the gear set 5 to rotate. The rotation of the gear set 5 will drive the internal gear 6 to rotate. The rotation of the internal gear 6 drives the cleaning member 8 to rotate through the transmission rod 7. When the cleaning member 8 rotates, the dust sweeping strip 83 will scrape the dust accumulated on the filter screen 9 and collect it between the inner shell 82 and the outer shell 81. When the cleaning member 8 rotates to a vertical downward state, the dust scraped and collected inside the cleaning member 8 will fall into the dust storage box 17 under the action of gravity to protect the dust from being adsorbed by the wind force of the fan 3. The effect is to prevent dust from accumulating on the filter 9 or passing through the filter 9 and being adsorbed on the fan 3, resulting in a decrease in ventilation efficiency, so as to achieve efficient removal and collection of dust on the filter 9; at the same time, the rotation of the cleaning member 8 will drive the second gear 12 to rotate through the bevel rack 11, and the rotation of the second gear 12 will drive the sleeve rod 13 to rotate, and the rotation of the sleeve rod 13 will drive the reciprocating screw 15 to rotate, and the rotation of the reciprocating screw 15 will drive the push plate 16 to reciprocate along the inner wall of the dust box 17. After the dust inside the dust box 17 accumulates to a certain extent, the dust is flattened to prevent the dust from accumulating only in a specific area inside the dust box 17 to form a conical accumulation, resulting in the space inside the dust box 17 cannot be efficiently utilized.

[0029] Furthermore, a counterweight 10 is fixedly connected to the lower end of the inner shell 82 .

[0030] Specifically, a counterweight 10 is fixedly connected to the lower end of the outer wall of the inner shell 82 of the cleaning member 8; when the fan 3 stops working, since the fan 3 and the fan blades are in an unpowered state, the counterweight 10 can drive the cleaning member 8 vertically downward under the action of gravity, so that the dust temporarily stored inside the cleaning member 8 can all fall into the dust storage box 17.

[0031] Furthermore, it also includes a striker 14 and a bell member 23, the striker 14 is fixedly connected to the sleeve rod 13 located between the dust box 17 and the second gear 12, and a baffle 19 is also provided inside the dust box 17, the baffle 19 is elastically connected to the bottom of the dust box 17 through a pressure spring 20, and an airbag 21 is also provided at the bottom of the baffle 19, the other end of the airbag 21 passes through the side wall of the dust box 17 and extends to the bottom of the striker 14, a slide plate 22 is also provided on the airbag 21, and a bell member 23 is provided on the slide plate 22.

[0032] Specifically, one side of the sleeve rod 13 is also fixedly connected to a striker rod 14, which is located between the second gear 12 and the dust box 17. The dust box 17 is elastically connected to a baffle 19, and the bottom of the baffle 19 is fixedly connected to a pressure spring 20, and the other end of the pressure spring 20 is fixedly connected to the inner bottom end of the dust box 17. The bottom of the baffle 19 is close to the second gear 12 and is also fixedly connected to an air bag 21. The side of the air bag 21 located outside the dust box 17 is fixedly connected to a slide plate 22, and the slide plate 22 is slidably connected to the outer wall of the dust box 17. The top of the slide plate 22 is fixedly connected to a bell member 23. The bell member 23 is composed of a bell and a spring fixedly connected to the slide plate 22, so that after the striker rod 14 hits the bell member 23, the bell can emit a loud alarm sound, and the bell member 23 is located below the striker rod 14.

[0033] It is understandable that when the dust inside the dust box 17 accumulates to a certain extent, the dust will squeeze the baffle 19 and descend along the inner wall of the dust box 17, causing the baffle 19 to squeeze the pressure spring 20 and the airbag 21 to begin to shrink, and then the airbag 21 pushes the slide plate 22 to rise. The rise of the slide plate 22 will drive the bell part 23 to rise, so that when the sleeve rod 13 drives the impact rod 14 to rotate, the impact rod 14 can hit the bell part 23, causing the bell part 23 to continue to make sounds to remind the user that the dust accumulated inside the dust box 17 needs to be cleaned.

[0034] Furthermore, a sliding groove is provided below the ventilation duct 1 , and the dust box 17 is slidably connected in the sliding groove. A pull rope fixedly connected to the dust box 17 is also provided in the sliding groove.

[0035] Specifically, the outer wall of the dust box 17 is fixedly connected with a rope 18, and the rope 18 is arranged in the sliding groove inside the ventilation duct 1; pulling the rope 18 can drive the dust box 17 to move in the sliding groove, which is convenient for cleaning; when the dust inside the dust box 17 is cleaned, the dust box 17 can be reinserted into the sliding groove of the ventilation duct 1 and the dust box 17 can be reset by pulling the rope 18. The reset of the dust box 17 will drive the sleeve rod 13 to be reinserted into the interior of the second gear 12, so that the second gear 12 can drive the impact rod 14 and the reciprocating screw rod 15 to rotate again through the sleeve rod 13. At the same time, after the dust inside the dust box 17 is cleared, the pressure spring 20 will drive the baffle 19 to rise and reset. The rise of the baffle 19 will pull the airbag 21 to reset, so that the airbag 21 can no longer push the slide plate 22 to rise, and then the slide plate 22 drives the bell member 23 to reset, waiting for the next work.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A building ventilation device, comprising a ventilation duct, characterized in that: The air exchange duct opening is provided with a filter screen, the filter screen is provided with a cleaning member, the air exchange duct is fixedly connected with a support rod, the support rod is fixedly connected with a fan for ventilation and driving the cleaning member, the cleaning member comprises an inner shell and an outer shell respectively installed inside and outside the filter screen, a dust storage box is provided below the cleaning member, a helical rack is fixedly connected to the lower end of the outer shell, a second gear is rotatably provided on one side of the dust storage box, a sleeve rod is inserted in the middle of the second gear, the helical rack matches the second gear, a reciprocating screw rod is fixedly connected to one end of the sleeve rod, and a push plate is sleeved on the reciprocating screw rod; It also includes a striker and a bell piece, wherein the striker is fixedly connected to a sleeve rod located between the dust box and the second gear, a baffle is also provided inside the dust box, and the baffle is elastically connected to the bottom of the dust box through a pressure spring, an airbag is also provided at the bottom of the baffle, and the other end of the airbag passes through the side wall of the dust box and extends to below the striker, a slide plate is also provided on the airbag, and a bell piece is provided on the slide plate.

2. The building ventilation device according to claim 1, characterized in that: A sliding groove is provided below the ventilation duct, the dust storage box is slidably connected in the sliding groove, and a pull rope fixedly connected to the dust storage box is also provided in the sliding groove.

3. The building ventilation device according to claim 2, characterized in that: The cleaning part includes an inner shell and an outer shell respectively installed on the inner and outer sides of the filter, the inner shell and the outer shell are fixedly connected and arranged in a corresponding state, the inner shell and the outer shell are both fixedly installed with dust sweeping strips, the dust sweeping strips are arranged in a radially fitted manner along the filter, and the inner shell and the outer shell have gaps with the filter.

4. The building ventilation device according to claim 3, characterized in that: A counterweight is fixedly connected to the lower end of the inner shell.

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