CN105642947B - A kind of electric drill dust-extraction unit - Google Patents

Abstract

The invention discloses an electric drill dust removal device, which comprises a dust collection cover (1), a cyclone dust removal box (3) and a fan box (4). The middle part of the dust collection cover (1) is communicated with a first elastic hose (21). The air outlet on the front of the fan box (4), the second elastic hose (22) under the dust collection cover (1) is connected to the air inlet pipe (32) of the cyclone dust collector box, and the air outlet pipe (31) on the upper part of the cyclone dust collector box is connected to the fan box (4) The lower air inlet, the air inlet of the fan box (4) is equipped with a filter (6), the center of the back of the fan box (4) is provided with a shaft hole that is socketed with the head of the punching machine (8), and the drill bit ( 9) From the dust collection cover (1) through the first elastic hose (21), the fan box (4) is connected to the head of the puncher (8) through the shaft hole, and the fan (5) in the fan box (4) ) is fixed on the tail rod of the drill bit (9) through the spring clamping device (10). The invention has the advantages that dust suction is realized and dust is deposited in the cyclone dust removal box.

Description

An electric drill dust removal device

technical field

The invention belongs to an electric drill auxiliary tool, in particular to an electric drill dust removal device.

Background technique

When electric drills are used to drill holes in the wall, a large amount of dust is generated, which pollutes the home improvement environment. At the same time, decoration workers inhale a large amount of dust during work, causing occupational diseases such as pneumoconiosis.

Chinese patent document CN 104907307 A disclosed an electric drill vacuum cleaner on September 16, 2015. It includes a dust collection cover, a dust suction pipe, a fan, and a dust collection pipe. The dust collection pipe includes a wind chamber, a dust collection part, and a cover. The wind chamber is set as a cylindrical structure. The wind chamber is provided with a drill chuck through hole. The fan is arranged in the wind chamber, and the drill chuck used for rotation drives the fan; The parts are arranged in a cylindrical structure, the upper end of the dust collecting part communicates with the wind chamber, and the lower end of the dust collecting part is provided with a cover; the dust collecting cover and the dust collecting pipe are connected through the dust suction pipe. Because this patent has following shortcoming, can't realize the basic function of vacuuming:

1. The wind chamber where the fan is installed is not equipped with an air outlet pipe, so the pressure difference cannot be obtained in the dust suction pipe, and there is no axial air flow in the dust suction pipe, which cannot absorb the dust in the dust collection hood;

2. Due to the poor air flow in the wind chamber where the fan is located, the fan blades have relatively high rotational resistance, hindering the rotation of the drill bit and causing power loss;

3. Since there is no filter screen between the dust collecting part and the wind chamber, in fact the dust will not automatically flow into the dust collecting part; instead, it reaches the wind chamber from the upper end of the dust collecting part.

Contents of the invention

Aiming at the technical problems existing in the prior art, the technical problem to be solved by the present invention is to provide an electric drill dust removal device, which can realize dust suction and make the dust flow to a preset position.

The technical problem to be solved by the present invention is achieved through such a technical scheme, which includes a dust collection cover, a cyclone dust removal box and a fan box, and a first elastic hose in the middle of the dust collection cover communicates with the air outlet on the front of the fan box to absorb dust. There is a second elastic hose under the cover to connect with the air intake pipe of the cyclone dust collector box, and the air outlet pipe on the upper part of the cyclone dust collector box is connected to the air inlet below the fan box, the air inlet of the fan box is equipped with a filter, and the center of the back of the fan box is equipped with a hole The shaft hole on the machine head, the drill bit is connected to the head of the drilling machine through the first elastic hose and the fan box through the shaft hole from the dust suction cover, and the fan in the fan box is fixed on the end of the drill bit by a spring clamping device. on the pole.

The present invention returns to the fan box from the fan box, the first elastic hose, the dust suction hood, the second elastic hose, the cyclone dust removal box, and forms a relatively closed airflow circulation path, which not only overcomes the problem of the air flow caused by the wind in the prior art. There is no way out of the room, and the dust gas is kept from leaking out; at the same time, the air inlet of the fan box is equipped with a filter screen, so that the granular dust is blocked and stays inside the cyclone dust collector.

The invention has the following advantages: dust suction is realized and dust is deposited in the cyclone dust removal box.

Description of drawings

The accompanying drawings of the present invention are as follows:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the front view of the cyclone dust removal box in Fig. 1;

Fig. 3 is the top view of the cyclone dust removal box in Fig. 1;

Fig. 4 is a structural diagram of the spring clamping device in Fig. 1

Fig. 5 is a sectional view of A-A in Fig. 4 .

In the figure: 1. Dust suction hood; 21. The first elastic hose; 22. The second elastic hose; 3. Cyclone dust removal box; 31. Air outlet pipe; 32. Air intake pipe; 33. Cylinder; 34. Cone cylinder ; 35. Ash storage box; 4. Fan box; 5. Fan; 6. Filter screen; 7. Take ash port; 8. Punch machine; 9. Drill bit; 10. Spring clamping device; 101. Spring; 102. Rubber tip; 104. Sleeve; 105. Column tube.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

As shown in Figure 1, the present invention includes a dust collection hood 1, a cyclone dust removal box 3 and a fan box 4, a first elastic hose 21 in the middle of the dust collection hood 1 communicates with the air outlet on the front of the fan box 4, and the bottom of the dust collection hood 1 There is a second elastic hose 22 connected to the air intake pipe 32 of the cyclone dust removal box; the air outlet pipe 31 on the upper part of the cyclone dust removal box is connected to the air inlet below the fan box 4, and the air inlet of the fan box 4 is equipped with a filter screen 6, and the center of the back of the fan box 4 A shaft hole that is socketed with the head of the puncher 8 is provided. The drill bit 9 is connected to the head of the puncher 8 through the shaft hole from the dust cover 1 through the first elastic hose 21 and the fan box 4. Inside, the fan 5 is fixed on the tail rod of the drill bit 9 through a spring clamping device 10 .

The connection of the first elastic hose 21 with the dust collection cover 1 and the fan box 4, the connection of the second elastic hose 22 with the dust collection cover 1 and the cyclone dust removal box 3 are all threaded connections, which are convenient for disassembly and maintenance of the air passage. closure.

As shown in Figures 2 and 3, the cyclone dust removal box 3 is a small tangential cyclone dust removal device; the cyclone dust removal box 3 includes an ash storage box 35, and an air inlet pipe 32, an air outlet pipe 31, and a cylinder 33 are installed in the ash storage box 35 And the cone 34, the inlet pipe 32 shrinks around the outer wall of the cylinder 33, and communicates with the inner cavity wall of the cylinder 33 tangentially, the cone 34 is fixedly connected to the lower end of the cylinder 33, and the air outlet pipe 31 is placed in the center of the cylinder 33 and upwards Export, ash storage box 35 bottoms have ash-taking mouth 7.

The air inlet pipe 32 sends the gas-solid two-phase flow into the dust removal device along the tangential direction of the cylinder 33. Due to the action of centrifugal force, the dust will rub against the inner wall of the cylinder 33, and the tangential speed will decrease, and the dust will gradually fall along the cone 34 to the ash storage box. In 35, the clean air is discharged from the cylinder 33 to the air inlet with the fan case 4 through the air outlet pipe 31, and a filter screen 6 is set at the fan case connection to remove residual dust.

The size of the cyclone dust-removing box 3 is related to the size of the air intake pipe area relative to the cylinder section, the tangential velocity of the air flow in the air intake pipe, the diameter of the air outlet pipe and the insertion depth of the air outlet pipe, and the relevant data must be measured through experiments. The ash storage box 35 can realize the temporary storage of the dust to facilitate centralized processing, and the ash-taking port 7 can be opened and closed to realize the discharge of the dust.

As shown in Fig. 4 and Fig. 5, the spring clamping device 10 comprises a sleeve 104, and three symmetrical column tubes 105 are arranged in the warp direction of the inner tube of the sleeve tube 104, and a spring 101 is housed in each column tube 105, and one end of the spring 101 is topped. The inner wall of the sleeve 104 is pressed, and the other end of the spring 101 is covered with a rubber head 102 . Three rubber heads 102 are in contact with the drill bit 9 .

The spring clamping device 10 uses three springs with higher rigidity as the clamping parts. Because the deformation of the springs can be large or small, it can clamp drill bits of different types. And drill bit 9 does not slide relative to each other when the drill bit rotates at a high speed, and fan 5 provides the power of air circulation.

Claims (3)

1. a kind of electric drill dust-extraction unit, includes dust hood（1）, cyclone dust removal box（3）And fan case（4）, it is characterized in that：Dust suction Cover（1）There is the first elastic hose at middle part（21）Connect fan case（4）Positive air outlet, dust hood（1）There is the second elasticity in lower section Hose（22）Connect the air inlet pipe of cyclone dust removal box（32）, the air outlet pipe on cyclone dust removal box top（31）Connect fan case（4）Under The air inlet of side, fan case（4）Air inlet is equipped with strainer（6）, fan case（4）Back center portion is equipped with and puncher（8）Head The axis hole of socket, drill bit（9）From dust hood（1）Through the first elastic hose（21）, fan case（4）Puncher is connected to across axis hole （8）Head, in fan case（4）Interior fan（5）Pass through fixture of the spring（10）It is fixed on drill bit（9）On foot piece.

2. electric drill dust-extraction unit according to claim 1, it is characterized in that：The cyclone dust removal box（3）Including stored ash box （35）, in stored ash box（35）It is interior that air inlet pipe is housed（32）, air outlet pipe（31）, cylinder（33）And cone cylinder（34）, air inlet pipe（32）It encloses Around cylinder（33）Outer wall reduces, with cylinder（33）Internal chamber wall tangentially connects, cone cylinder（34）It is fixedly connected on cylinder（33）Lower end, Air outlet pipe（31）It is placed in cylinder（33）Centre simultaneously exports upwards, stored ash box（35）Bottom, which is provided with, takes grey mouth（7）.

3. electric drill dust-extraction unit according to claim 1 or 2, it is characterized in that：The fixture of the spring（10）Including Casing（104）, casing（104）The radial direction of inner tube is provided with three symmetrical column tubes（105）, every column tube（105）It is interior that bullet is housed Spring（101）, spring（101）One end top pressure casing（104）Inner wall, spring（101）The other end is cased with rubber tip（102）.