Dust-proof structure for hand-held cutting machine
By designing water spray and dust collection components on the handheld cutting machine, dynamic coverage of the water spray component and multi-stage separation of the dust collection component are achieved. This solves the problems of inflexible water spray and incomplete dust collection in the existing dust prevention structure of handheld cutting machines, improves the dust reduction effect and dust purification efficiency, and improves the stability of equipment operation and working environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DONGLI ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-19
Smart Images

Figure CN224374517U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting machine technology, and in particular to a dust-proof structure for a handheld cutting machine. Background Technology
[0002] In modern engineering construction, decoration and renovation and various processing and manufacturing industries, handheld cutting machines have become a common equipment for cutting materials such as stone, tiles and wood due to their significant advantages such as convenience, flexibility and efficiency. Whether it is the cutting and processing of ceramics and stone on the construction site or the cutting of various boards in small workshops, handheld cutting machines play an irreplaceable role.
[0003] To address the aforementioned issues, existing patents have provided solutions. However, the dust-proof structures used in existing handheld cutting machines are not convenient for adjusting the water spray position and range in real time according to the cutting conditions, resulting in incomplete dust suppression coverage, dead corners, and affecting the dust suppression effect. Moreover, existing dust collection structures often lack multi-stage dust separation and purification designs, making it difficult to efficiently process dust of different particle sizes. This leads to the accumulation and blockage of large dust particles and the leakage of fine dust, affecting the stability of equipment operation and the quality of the working environment.
[0004] Therefore, a dust-proof structure for handheld cutting machines is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a dust-proof structure for handheld cutting machines, which can solve the problems of existing dust-proof structures for handheld cutting machines, which are not convenient for adjusting the water spray position and range in real time according to the cutting conditions, resulting in incomplete dust suppression coverage, dead corners, and affecting the dust suppression effect. Moreover, existing dust collection structures often lack multi-stage dust separation and purification design, which is not convenient for efficient processing of dust of different particle sizes, resulting in the accumulation and blockage of large dust particles and the leakage of fine dust, affecting the stability of equipment operation and the quality of the working environment.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a dustproof structure for a handheld cutting machine, comprising a cutting machine body, an outer shell provided on the outside of the cutting machine body, a water spraying component provided on the outside of the outer shell, and a dust suction component provided on the right side of the outer shell;
[0007] The water spray assembly includes a support plate fixedly connected to the outside of the housing. A micro motor is fixedly connected to the outside of the support plate. A rotating bracket is fixedly connected to the output end of the micro motor. An annular water pipe is fixedly connected to the outside of the rotating bracket. A nozzle is connected to the outside of the annular water pipe. A water storage tank is fixedly connected to the outside of the housing. A micro water pump is fixedly connected to the outside of the water storage tank. The inlet end of the micro water pump is connected to the water storage tank, and the output end of the micro water pump is connected to the annular water pipe.
[0008] Preferably, the dust collection assembly includes a dust collection frame fixedly connected to the top of the housing, a dust collection port is provided on the left side of the dust collection frame, and a cyclone separator is fixedly connected inside the dust collection frame.
[0009] Preferably, a miniature air pump is provided on the right side of the cyclone separator, and a filter screen is provided at the air outlet of the cyclone separator.
[0010] Preferably, a collection frame is fixedly connected to the bottom of the vacuum frame, and a collection box is slidably connected inside the collection frame, the collection box being located at the bottom of the filter plate.
[0011] Preferably, a water level sensor is provided on the top of the water storage tank, and the detection end of the water level sensor penetrates through the top of the water storage tank.
[0012] Preferably, a dust sensor is provided inside the dust collection frame, and a controller is fixedly connected to the outside of the dust collection frame, and the controller is electrically connected to the dust sensor.
[0013] Preferably, the top of the water storage tank is provided with a water inlet, and a top cover is snapped into the inside of the water inlet.
[0014] Preferably, a sealing gasket is embedded inside the micro motor, and the sealing gasket is made of rubber.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This application achieves the effect of dynamic water spraying to reduce dust at the cutting point through the water spraying component, improving the coverage and accuracy of dust reduction, and solving the problems of fixed water spraying position, small coverage area and inflexible adjustment of traditional water spraying devices. Compared with traditional water spraying devices, it can achieve full dynamic water spraying coverage, allowing water to be sprayed more evenly on the cutting area, effectively suppressing dust. At the same time, the combination of micro water pump and water storage tank can ensure continuous water supply, eliminating the need for frequent manual water filling and improving the convenience of use.
[0017] 2. This application achieves efficient adsorption and collection of dust through a dust collection component, improving dust collection efficiency and purification level. It solves the problems of incomplete dust removal and easy dust leakage caused by the simple structure of traditional dust collection devices. Compared with traditional dust collection devices, this dust collection component quickly separates the heavier particles in the inhaled dust and settles them into the collection box. Then, the exhaust air is filtered a second time through the filter screen, effectively intercepting fine dust and achieving efficient dust collection and purification. Attached Figure Description
[0018] Figure 1This is an overall structural diagram of the dust-proof structure for the handheld cutting machine of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the water spray assembly of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the dust collection component of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the support plate of this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the dust collection frame of this utility model.
[0023] In the diagram, 1. Cutting machine body; 2. Outer shell; 3. Water level sensor; 4. Water spray assembly; 401. Support plate; 402. Micro motor; 403. Rotating bracket; 404. Annular water pipe; 405. Nozzle; 406. Water storage tank; 407. Micro water pump; 5. Dust collection assembly; 501. Dust collection frame; 502. Dust collection port; 503. Cyclone separator; 504. Micro air pump; 505. Filter screen; 506. Collection frame; 507. Collection box; 6. Dust sensor; 7. Controller; 8. Water inlet; 9. Top cover; 10. Sealing gasket. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-5 The present invention provides the following technical solution:
[0026] A dust-proof structure for a handheld cutting machine includes a cutting machine body 1, an outer shell 2 on the outside of the cutting machine body 1, a water spraying component 4 on the outside of the outer shell 2, and a dust suction component 5 on the right side of the outer shell 2.
[0027] The water spray assembly 4 includes a support plate 401 fixedly connected to the outside of the housing 2. A micro motor 402 is fixedly connected to the outside of the support plate 401. A rotating bracket 403 is fixedly connected to the output end of the micro motor 402. An annular water pipe 404 is fixedly connected to the outside of the rotating bracket 403. A nozzle 405 is connected to the outside of the annular water pipe 404. A water storage tank 406 is fixedly connected to the outside of the housing 2. A micro water pump 407 is fixedly connected to the outside of the water storage tank 406. The inlet end of the micro water pump 407 is connected to the water storage tank 406, and the output end of the micro water pump 407 is connected to the annular water pipe 404.
[0028] In this embodiment: by activating the micro water pump 407 on the outside of the water storage tank 406, the inlet of the micro water pump 407 draws water from the water storage tank 406, and the output delivers the water to the annular water pipe 404. The nozzle 405 connected to the outside of the annular water pipe 404 sprays water to reduce dust at the cutting point. In order to expand the water spray coverage, the micro motor 402 on the outside of the support plate 401 drives the rotating bracket 403 to rotate. The annular water pipe 404 and the nozzle 405 on the outside of the rotating bracket 403 also rotate together, so that the nozzle 405 can spray water in a circle around the cutting point, more comprehensively covering the cutting area and improving the dust reduction effect. The water level sensor 3 on the top of the water storage tank 406 monitors the water level in the water storage tank 406 in real time. When the water level is lower than the set value, the water level sensor 3 will send a signal to remind the operator to add water to the water storage tank 406 in time to ensure the normal operation of the water spray assembly 4.
[0029] Specifically, such as Figure 3 As shown, the vacuuming assembly 5 includes a vacuuming frame 501 fixedly connected to the top of the housing 2. A vacuuming port 502 is provided on the left side of the vacuuming frame 501, and a cyclone separator 503 is fixedly connected inside the vacuuming frame 501.
[0030] Specifically, such as Figure 3 As shown, a miniature air pump 504 is provided on the right side of the cyclone separator 503, and a filter screen 505 is provided at the air outlet of the cyclone separator 503.
[0031] Specifically, such as Figure 3 As shown, a collection frame 506 is fixedly connected to the bottom of the vacuum frame 501, and a collection box 507 is slidably connected inside the collection frame 506. The collection box 507 is located at the bottom of the filter plate 505.
[0032] In this embodiment: by activating the micro air pump 504, a negative pressure is formed at the suction port 502 on the left side of the suction frame 501. The dust generated during the cutting process is sucked into the suction frame 501 under the action of negative pressure. The dust entering the suction frame 501 first passes through the cyclone separator 503. In the cyclone separator 503, the dust is separated due to centrifugal force. The heavier dust particles are thrown towards the inner wall of the separator and fall down along the wall, while the lighter dust and air are discharged from the air outlet of the cyclone separator 503. When the discharged air and lighter dust pass through the filter plate 505, the dust is intercepted by the filter plate 505, and the purified air is discharged through the micro air pump 504. The separated dust particles fall into the collection frame 506 at the bottom of the suction frame 501 and slide into the collection box 507 for collection. When the collection box 507 is full, it can be slid out from the collection frame 506 for cleaning.
[0033] Specifically, such as Figure 4 As shown, a water level sensor 3 is installed on the top of the water storage tank 406, and the detection end of the water level sensor 3 penetrates through the top of the water storage tank 406.
[0034] Specifically, such as Figure 5 As shown, a dust sensor 6 is installed inside the dust collection frame 501, and a controller 7 is fixedly connected to the outside of the dust collection frame 501. The controller 7 is electrically connected to the dust sensor 6.
[0035] In this embodiment: By setting a water level sensor 3, when water is added to the water storage tank 406, the detection end of the water level sensor 3 senses the water level height in real time. When the cutting machine is started for cutting operations, the water spray assembly 4 starts to work. The water in the water storage tank 406 is continuously drawn by the micro water pump 407 and sprayed out through the nozzle 405, and the water level gradually drops. The water level sensor 3 continuously monitors the water level change. When the water level is lower than its preset warning value, it will issue a reminder signal in the form of an indicator light. By monitoring the water level in the water storage tank 406 in real time by the water level sensor 3, the operator can be reminded to add water in time when the water level is insufficient, so as to avoid the water spray assembly 4 from failing to work properly due to lack of water, ensuring the continuity of water spray dust suppression, ensuring stable dust suppression effect, and avoiding dust control failure due to lack of water, thereby effectively protecting the working environment and the health of the operators. By setting a dust sensor 6 and a controller 7, before the cutting operation begins, The dust sensor 6 is already in operation, detecting the dust concentration inside and around the dust collection frame 501 in real time. When dust is generated during cutting, the dust concentration changes. The dust sensor 6 converts the detected concentration signal into an electrical signal and transmits it to the controller 7. The controller 7 analyzes and processes the received signal and determines whether to start the micro air pump 504 and adjust its power based on the preset dust concentration threshold. When the dust concentration is high, the controller 7 controls the micro air pump 504 to operate at a higher power to enhance the dust collection effect. When the dust concentration is low, the power of the micro air pump 504 can be reduced or it can be put into standby mode. The cooperation between the dust sensor 6 and the controller 7 realizes the intelligent operation of the dust collection component 5, dynamically adjusting the dust collection intensity according to the actual dust generation, ensuring that the dust is adsorbed in a timely and effective manner, improving the adaptability of the dust collection component 5 to different cutting conditions, and better controlling dust.
[0036] Specifically, such as Figure 4 As shown, the top of the water storage tank 406 is provided with a water inlet 8, and a top cover 9 is snapped into the inside of the water inlet 8.
[0037] Specifically, such as Figure 4 As shown, a sealing gasket 10 is embedded inside the micro motor 402, and the sealing gasket 10 is made of rubber.
[0038] In this embodiment: By setting up an inlet 8 and a top cover 9, when water needs to be added to the water storage tank 406, the operator manually removes the top cover 9 from the inlet 8, and then injects clean water into the water storage tank 406 through the inlet 8. After adding water, the top cover 9 is accurately aligned with the inlet 8 and snapped into place, ensuring that the top cover 9 and the inlet 8 fit tightly together. During the cutting operation, the top cover 9 remains snapped into the inlet 8 to prevent water in the water storage tank 406 from overflowing from the inlet 8, and to prevent dust and other debris from entering the water storage tank 406 and contaminating the water source. By setting a sealing gasket 10, during installation... When the micro motor 402 is in operation, the sealing gasket 10 is embedded in the connection between the micro motor 402 and the outer shell 2. When the micro motor 402 is working, its output end drives the rotating bracket 403 to rotate. At this time, the sealing gasket 10 tightly fills the gap between the micro motor 402 and the outer shell 2. During the cutting operation, water mist or dust may come into contact with the connection between the micro motor 402 and the outer shell 2. This effectively prevents water and dust from entering the interior of the micro motor 402, so that the water spray assembly 4 can continuously and effectively carry out dust suppression work, improving the reliability and service life of the entire dust prevention structure.
[0039] Working Principle: When using the dust-proof structure of the handheld cutter, first inject an appropriate amount of clean water into the water tank 406 through the water inlet 8 at the top of the water tank 406, and tighten the top cover 9 to prevent water leakage. When the cutter body 1 is started for cutting operations, the entire dust-proof structure begins to work in coordination. At this time, the dust sensor 6 installed inside the dust suction frame 501 will detect the dust concentration in the surrounding environment in real time and transmit the detection signal to the controller 7 on the outside of the dust suction frame 501. After receiving the signal, the controller 7 will control the start and stop of the micro air pump 504 and the power level according to the dust concentration. After the micro air pump 504 is started, the dust suction port on the left side of the dust suction frame 501 will be activated. A negative pressure is created at point 502. Dust generated during the cutting process is drawn into the suction frame 501 under this negative pressure. The dust entering the suction frame 501 first passes through a cyclone separator 503. Inside the cyclone separator 503, the dust is separated due to centrifugal force. Heavier dust particles are thrown against the inner wall of the separator and fall down the wall, while lighter dust and air are discharged from the outlet of the cyclone separator 503. When the discharged air and lighter dust pass through the filter plate 505, the dust is intercepted by the filter plate 505, and the purified air is discharged through a micro air pump 504. The separated dust particles fall into the collection frame 506 at the bottom of the suction frame 501 and slide into the collection tray. The water is collected in collection box 507. When collection box 507 is full, it can be slid out from collection frame 506 for cleaning. At the same time, the miniature water pump 407 on the outside of storage tank 406 is also started under the control of controller 7. The water inlet of miniature water pump 407 draws water from storage tank 406 and the output delivers water to annular water pipe 404. The nozzle 405 connected to the outside of annular water pipe 404 sprays water to reduce dust at the cutting point. In order to expand the water spray coverage, the miniature motor 402 on the outside of support plate 401 drives the rotating bracket 403 to rotate. The annular water pipe 404 and nozzle 405 on the outside of rotating bracket 403 also rotate together, so that nozzle 405... It can spray water in a circular pattern around the cutting point, providing more comprehensive coverage of the cutting area and improving dust suppression. The water level sensor 3 on top of the water tank 406 monitors the water level in the tank in real time. When the water level is lower than the set value, the water level sensor 3 will send a signal to remind the operator to add water to the water tank 406 in time to ensure the normal operation of the water spray component 4. During the entire cutting operation, the water spray component 4 wets the dust by spraying water, reducing dust flying. At the same time, the dust suction component 5 sucks in and collects the dust that has not been wetted by water through negative pressure adsorption, thereby effectively controlling the dust generated during the cutting process, improving the working environment, and protecting the health of the operators.
[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A dust-proof structure for a handheld cutting machine, comprising a cutting machine body (1), characterized in that: The outer side of the cutting machine body (1) is provided with a shell (2), the outer side of the shell (2) is provided with a water spraying component (4), and the right side of the shell (2) is provided with a dust suction component (5). The water spray assembly (4) includes a support plate (401) fixedly connected to the outside of the outer shell (2). A micro motor (402) is fixedly connected to the outside of the support plate (401). A rotating bracket (403) is fixedly connected to the output end of the micro motor (402). An annular water pipe (404) is fixedly connected to the outside of the rotating bracket (403). A nozzle (405) is connected to the outside of the annular water pipe (404). A water storage tank (406) is fixedly connected to the outside of the outer shell (2). A micro water pump (407) is fixedly connected to the outside of the water storage tank (406). The inlet end of the micro water pump (407) is connected to the water storage tank (406). The output end of the micro water pump (407) is connected to the annular water pipe (404).
2. The dust-proof structure for a handheld cutting machine according to claim 1, characterized in that: The vacuuming assembly (5) includes a vacuuming frame (501) fixedly connected to the top of the housing (2), a vacuuming port (502) is provided on the left side of the vacuuming frame (501), and a cyclone separator (503) is fixedly connected inside the vacuuming frame (501).
3. The dust-proof structure for a handheld cutting machine according to claim 2, characterized in that: A miniature air pump (504) is provided on the right side of the cyclone separator (503), and a filter screen (505) is provided at the air outlet of the cyclone separator (503).
4. The dust-proof structure for a handheld cutting machine according to claim 3, characterized in that: The bottom of the vacuum frame (501) is fixedly connected to a collection frame (506), and a collection box (507) is slidably connected inside the collection frame (506). The collection box (507) is located at the bottom of the filter plate (505).
5. The dust-proof structure for a handheld cutting machine according to claim 1, characterized in that: A water level sensor (3) is provided on the top of the water storage tank (406), and the detection end of the water level sensor (3) penetrates through the top of the water storage tank (406).
6. The dust-proof structure for a handheld cutting machine according to claim 2, characterized in that: A dust sensor (6) is installed inside the dust collection frame (501), and a controller (7) is fixedly connected to the outside of the dust collection frame (501). The controller (7) is electrically connected to the dust sensor (6).
7. The dust-proof structure for a handheld cutting machine according to claim 1, characterized in that: The water storage tank (406) has an inlet (8) on its top, and a top cover (9) is snapped into the inside of the inlet (8).
8. The dust-proof structure for a handheld cutting machine according to claim 1, characterized in that: The micro motor (402) has a sealing gasket (10) embedded in its inner side, and the sealing gasket (10) is made of rubber.