Sprinkler having a multifunctional protective hood

1. A sprinkler, comprising:

a protective hood having a side provided with a protruding plug;

wherein the plug of the protective hood has an end face provided with a protruding mounting post;

the mounting post of the protective hood has an inner portion provided with a mounting recess;

the mounting post of the protective hood has an end portion provided with a spraying hole;

the spraying hole of the mounting post is connected to the mounting recess;

the end face of the plug has a periphery provided with a plurality of filtering holes;

the protective hood has an inner portion provided with a chamber;

the mounting post of the protective hood extends into the chamber;

the sprinkler further comprises:

a receiving barrel having a top provided with a mouth which has an outer wall provided with a threaded locking portion;

a boosting unit detachably mounted on the mouth of the receiving barrel and locked by the locking portion of the mouth;

a spraying unit having a first end connected with the receiving barrel and a second end provided with a nozzle head;

the protective hood is capable of being detachably mounted on the nozzle head of the spraying unit; and

the protective hood is capable of being detachably mounted on the mouth of the receiving barrel.

2. The sprinkler of claim 1 , wherein the protective hood has a funnel shape.

3. The sprinkler of claim 1 , wherein the chamber of the protective hood has a tapered shape.

4. The sprinkler of claim 1 , wherein the spraying hole of the mounting post is connected between the chamber and the nozzle head of the spraying unit when the protective hood is mounted on the nozzle head of the spraying unit.

5. The sprinkler of claim 1 , wherein

the nozzle head of the spraying unit has a peripheral wall provided with a plurality of limit ribs; and

the mounting post of the protective hood has a peripheral wall provided with a plurality of limit slots detachably locked onto the limit ribs of the nozzle head when the protective hood is mounted on the nozzle head of the spraying unit.

6. The sprinkler of claim 5 , wherein

each of the limit ribs of the nozzle head has an elongate shape; and

each of the limit slots of the mounting post has an elongate shape.

7. The sprinkler of claim 5 , wherein

each of the limit ribs of the nozzle head extends in a longitudinal direction of the nozzle head; and

each of the limit slots of the mounting post has extends in a longitudinal direction of the mounting post.

8. The sprinkler of claim 1 , wherein each of the filtering holes of the protective hood is connected between the chamber and the mouth of the receiving barrel when the protective hood is mounted on the mouth of the receiving barrel.

9. The sprinkler of claim 1 , wherein the plug of the protective hood is detachably inserted into the mouth of the receiving barrel when the protective hood is mounted on the mouth of the receiving barrel.

10. The sprinkler of claim 1 , wherein the mounting post of the protective hood is detachably mounted on the nozzle head of the spraying unit when the protective hood is mounted on the nozzle head of the spraying unit.

11. The sprinkler of claim 10 , wherein the mounting recess of the mounting post is detachably mounted on the nozzle head of the spraying unit.

12. The sprinkler of claim 1 , wherein the protective hood has a size greater than that of the nozzle head of the spraying unit and that of the mouth of the receiving barrel.

13. The sprinkler of claim 1 , wherein the plug of the protective hood is a hollow body.

14. The sprinkler of claim 13 , wherein the mounting post of the protective hood is located at a central portion of the plug.

15. The sprinkler of claim 1 , wherein the spraying hole of the mounting post is located at a central portion of the mounting post.