The present invention is related to a pump technique, and more particularly to a pump-used filter device which can enhance filtering effect and prolong the period of cleaning of the filter mesh.
FIGS. 5 to 7 show a conventional pump-used filter device. The filter device includes a connecting member 60 capable of connecting with an output end of a pump. A liquid incoming hole 61 is formed on one side of the connecting member 60 to communicate with the pump. Two liquid outgoing holes 62 are respectively formed on top section and the other side of the connecting member 60. A hollow outer sleeve 70 is locked with the connecting member 60. A cylindrical filter tube 80 is fitted in the outer sleeve 70. The liquid incoming hole 61 of the connecting member 60 communicates with the interior of the filter tube 80, while the liquid outgoing holes 62 communicate with outer side of the filter tube 80. A bottom cap 90 seals the bottom of the outer sleeve 70. A valve body 91 is locked in the bottom cap 90 to communicate with the interior of the filter tube 80. One end face of the filter tube 80 tightly abuts against inner face of the bottom cap 90.
In use, as shown in
The above conventional pump-used filter device has some shortcomings. For example, as shown in
It is therefore a primary object of the present invention to provide a pump-used filter device which can reduce the amount of the impurities jamming the filter mesh and enhance filtering effect. Also, the pump-used filter device can prolong the period of cleaning of the filter mesh and make it easier to clean the filter mesh. In addition, the cost for the filter mesh is lower.
According to the above object, the pump-used filter device includes: a connecting body capable of communicating with a spray gun pump, the connecting body being formed with an internal upper cavity, the connecting body being further formed with a guide post in the upper cavity, the connecting body being further formed with a liquid incoming passage passing through the guide post, the connecting body being further formed with a liquid outgoing passage on one side other than the liquid incoming passage, one end of the liquid outgoing passage communicating with the upper cavity, the other end of the liquid outgoing passage being formed with at least one outlet; a main body having a connecting section locked with the connecting body, the main body further having a conic section immediately adjacent to the connecting section, the conic section being formed with an internal lower cavity corresponding to the upper cavity of the connecting body; and a filter mesh horizontally disposed between the main body and the connecting body, the guide post being fitted through and located in the filter mesh, whereby the filter mesh separates the upper cavity of the connecting body and the lower cavity of the main body from each other as two spaces.
The present invention can be best understood through the following description and accompanying drawings wherein:
Please refer to FIGS. 1 to 3. The pump-used filter device of the present invention includes a connecting body 10 capable of communicating with a spray gun pump. A circumference of the connecting body 10 is formed with an outer thread section 11. The connecting body 10 is formed with an internal upper cavity 12 directed to the outer thread section 11. The connecting body 10 is formed with a guide post 13 at the center of the upper cavity 12. In addition, the connecting body 10 is formed with a liquid incoming passage 14 passing through the guide post 13. The connecting body 10 is further formed with a liquid outgoing passage 15 on one side other than the liquid incoming passage 14. One end of the liquid outgoing passage 15 communicates with the upper cavity 12. The other end of the liquid outgoing passage 15 is formed with two outlets 16 respectively communicating with top side and the other side of the connecting body 10.
The present invention further includes a main body 20 locked with the connecting body 10. The main body 20 has a connecting section 21 formed with an inner thread hole 22. The main body 20 further has a coupling section immediately adjacent to the connecting section 21. The coupling section is a conic section 23 formed with an internal lower cavity 24. Bottom end of the conic section 23 is formed with an opening 26. An annular shoulder section 25 is formed between the inner thread hole 22 and the conic section 23.
The present invention further includes a filter mesh 30 clamped between the shoulder section 25 of the main body 20 and the end of the outer thread section 11 of the connecting body 10. The outer and inner circumferences of the filter mesh 30 respectively have an outer and a central leakproof washers 310, 311. Three reinforcing ribs 32 are disposed between the two washers 310, 311 at equal angular intervals. The guide post 13 is fitted through the central washer 311. The outer washer 310 is clamped between the shoulder section 25 of the main body 20 and the end of the outer thread section 11 of the connecting body 10.
The present invention further includes a guide member 40 locked on the guide post 13 of the connecting body 10. The guide post 13 of the connecting body 10 and the guide member 40 clamp the filter mesh 30 on two sides thereof. The guide member 40 has a chamber 41 communicating with the liquid incoming passage 14. Two guiding outlets 42 are respectively formed through two sides of the guide member 40 to communicate with the chamber 41.
The present invention further includes a valve body 50 locked in the opening 26 of the conic section 23 of the main body 20.
In use, referring to
According to the above arrangement, the present invention has the following advantages:
The above embodiment is only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiment can be made without departing from the spirit of the present invention.