Divided-flow opposite-flushing type silencing filter and air gun

Abstract

The utility model discloses a split-flow opposite-flushing type noise reduction filter which comprises a split-flow pressure reduction sleeve, a split-flow pressure reduction sleeve, a split-flow pressure reduction sleeve and a split-flow pressure reduction sleeve, the hedging noise reduction shell is arranged outside the flow dividing and pressure reducing sleeve in a sleeving mode, a noise reduction cotton ring is arranged on the inner wall of the hedging noise reduction shell, and a hedging noise reduction cavity is formed between the hedging noise reduction shell and the flow dividing and pressure reducing sleeve; and the filtering reinforcing shell is in butt joint with the hedging noise reduction shell, an activated carbon filter element and a noise reduction gun nozzle are arranged in the filtering reinforcing shell, and airflow is sprayed out of the air gun nozzle and then sequentially passes through the flow division pressure reduction sleeve, the hedging noise reduction cavity, the activated carbon filter element and the noise reduction gun nozzle to be sprayed out. Vibration noise generated by friction of high-pressure air in the air gun and accumulated in the pipeline is shunted and decompressed through the sleeve, and the purposes of eliminating noise and purifying air are achieved through a series of noise reduction measures such as follow-up high-pressure airflow pushing hedging digestion, vibration absorption through the noise reduction cotton ring and the like by combining with impurity filtering of the activated carbon filter element.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control mechanical processing technical field especially is involved in a kind of shunt counter-blast type silencing filter and air gun. BACKGROUND

[0002] Air gun is indispensable tool of machine tool, cleaning machine, processing debris, product surface residual coolant etc., even to tool and product cooling in the process of processing and debugging, need to use air gun, and machine tool air gun has two disadvantages, loud noise and water vapor impurity in airflow.

[0003] Because of working air pressure, the diameter of muzzle is thin, the noise generated by air gun when working is generally above 70 decibels, and the noise of some powerful air guns even exceeds 90 decibels, which is one of the main sources of environmental noise in the machining workshop, seriously affecting the environmental protection index of the machining workshop; Because the health status of air compressor, air filter condensing machine and air pipe is difficult to maintain ideal state, the high-pressure airflow sprayed through air gun contains a large amount of impurities and water vapor, which not only affects the health of production line operators, but also affects the whole workshop environment. SUMMARY

[0004] The utility model discloses a kind of shunt counter-blast type silencing filter to overcome the deficiency of background art, and the first purpose is to disclose a kind of shunt counter-blast type silencing filter;

[0005] The second purpose is to disclose the air gun using the shunt counter-blast type silencing filter described above.

[0006] Technical scheme: the shunt counter-blast type silencing filter described in the utility model, comprising:

[0007] Shunt pressure-reducing sleeve, the shunt pressure-reducing sleeve is sleeved on the muzzle of air gun;

[0008] Counter-blast silencing shell, the counter-blast silencing shell is sleeved on the outside of shunt pressure-reducing sleeve, the inner wall of the counter-blast silencing shell is provided with sound-absorbing cotton ring, and counter-blast silencing cavity is formed between the counter-blast silencing shell and the shunt pressure-reducing sleeve;

[0009] Filtering reinforced shell, the filtering reinforced shell is butt-jointed with the counter-blast silencing shell, and is provided with activated carbon filter element and silencing muzzle inside, airflow is sprayed from air gun muzzle, and then sprayed from shunt pressure-reducing sleeve, counter-blast silencing cavity, activated carbon filter element and silencing muzzle in sequence.

[0010] Further, the shunt pressure-reducing sleeve includes bifurcated connecting sleeve, fixed step and shunt pipe connected in sequence, the bifurcated connecting sleeve is sleeved on the muzzle of air gun, and locking ring is externally sleeved and locked by bolt.

[0011] Further, the counter-blast silencing shell is sealingly sleeved on the fixed step at one end.

[0012] Further, the shunt pipe has a first end for air intake, a closed end, and a plurality of shunt holes arranged at intervals in a circumferential direction in the middle part.

[0013] Further, the filter-reinforced shell is sleeved outside the counter-attack sound-attenuating shell, the counter-attack sound-attenuating shell is provided with a limiting protrusion, the filter-reinforced shell is provided with a rotation limiting groove corresponding to the limiting protrusion, the filter-reinforced shell is sleeved outside the counter-attack sound-attenuating shell and the limiting protrusion is inserted into the rotation limiting groove, and axial fixation is achieved by rotating the filter-reinforced shell.

[0014] Further, the activated carbon filter element is arranged in an axial section of the filter-reinforced shell corresponding to the counter-attack sound-attenuating cavity, and the sound-attenuating nozzle is arranged at a filtering end of the activated carbon filter element.

[0015] Correspondingly, a gas gun is disclosed, and the gas gun nozzle is sleeved with the shunt counter-attack sound-attenuating filter.

[0016] Advantages: compared with the prior art, the utility model has the advantages that: when air flows with different pressures are counter-attacked, air vibration is eliminated, vibration noise generated by high-pressure air friction in the gas gun is reduced in pressure through the sleeve shunt, the noise is eliminated through subsequent high-pressure air counter-attack, the noise is absorbed by the sound-attenuating cotton ring, a series of sound-attenuating measures are combined with the activated carbon filter element to filter impurities, and the purposes of eliminating noise and purifying air are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall external view of the utility model;

[0018] Figure 2 is the partial sectional view of the utility model;

[0019] Figure 3 is the structure schematic view of the shunt pressure reduction sleeve and the activated carbon filter element of the utility model. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be further described below in combination with the drawings and embodiments.

[0021] As shown in the gas gun, Figure 1 the gas gun nozzle 2 is provided with the shunt counter-attack sound-attenuating filter.

[0022] The shunt counter-attack sound-attenuating filter, Figure 2 as shown in the drawings, 3 comprises:

[0023] a shunt pressure reduction sleeve 1, the shunt pressure reduction sleeve 1 is sleeved with the gas gun nozzle 2.

[0024] The shunt pressure relief sleeve 1 comprises a bifurcated connecting sleeve 101, a fixed step 102 and a shunt pipe 103 connected in sequence, the bifurcated connecting sleeve 101 is sleeved on the air gun nozzle 2, an external locking ring 104 is sleeved, and the locking is achieved through a bolt 105. The shunt pipe 103 is air inlet at the first end, closed at the tail end, and a plurality of shunt holes are arranged at the middle part in a circumferential direction.

[0025] The counter-attack sound-absorbing shell 3 is sleeved outside the shunt pressure relief sleeve 1, the inner wall of the counter-attack sound-absorbing shell 3 is provided with a sound-absorbing cotton ring 4, and a counter-attack sound-absorbing cavity is formed between the counter-attack sound-absorbing shell 3 and the shunt pressure relief sleeve 1; one end of the counter-attack sound-absorbing shell 3 is sealingly sleeved on the fixed step 102.

[0026] The filter reinforcing shell 5 is connected with the counter-attack sound-absorbing shell 3, and the inside is provided with an activated carbon filter core 6 and a sound-absorbing nozzle 7; the airflow is sprayed out from the air gun nozzle 2, and then sprayed out in sequence through the shunt pressure relief sleeve 1, the counter-attack sound-absorbing cavity, the activated carbon filter core 6 and the sound-absorbing nozzle 7.

[0027] The filter reinforcing shell 5 is sleeved outside the counter-attack sound-absorbing shell 3, the counter-attack sound-absorbing shell 3 is provided with a limiting protrusion 301 outside, the filter reinforcing shell 5 is provided with a rotating limiting groove 501 corresponding to the limiting protrusion 301, the filter reinforcing shell 5 is sleeved outside the counter-attack sound-absorbing shell 3 and the limiting protrusion 301 is inserted into the rotating limiting groove 501 corresponding to the rotating limiting groove 501, and the axial fixation is achieved by rotating the filter reinforcing shell 5. The activated carbon filter core 6 is arranged in the axial section of the filter reinforcing shell 5 corresponding to the counter-attack sound-absorbing cavity, and the sound-absorbing nozzle 7 is arranged at the filtering end of the activated carbon filter core 6.

[0028] Through experiments, the device can reduce the air noise of more than 70 decibels at the gun muzzle to below 60 decibels, reduce the noise in the workplace, protect the hearing and physical health of the operators, improve the air quality, effectively reduce the peculiar smell of compressed air, and improve the production and working environment of the workshop.

Claims

1. A split counterbalanced sound attenuating filter, characterized by, It comprises: a shunt pressure relief sleeve (1) sleeved on a gas gun nozzle (2); a butt-joint sound-absorbing shell (3) sleeved outside the shunt pressure relief sleeve (1), the inner wall of the butt-joint sound-absorbing shell (3) being provided with a sound-absorbing cotton ring (4), a butt-joint sound-absorbing cavity being formed between the butt-joint sound-absorbing shell (3) and the shunt pressure relief sleeve (1); a filter reinforcing shell (5) butted with the butt-joint sound-absorbing shell (3), the inside of the filter reinforcing shell (5) being provided with an activated carbon filter element (6) and a sound-absorbing nozzle (7), air flow being sprayed out of the gas gun nozzle (2) and then in turn passing through the shunt pressure relief sleeve (1), the butt-joint sound-absorbing cavity, the activated carbon filter element (6) and the sound-absorbing nozzle (7).

2. The split hedge silencer filter of claim 1, wherein: The shunt pressure relief sleeve (1) comprises a bifurcated connecting sleeve (101), a fixed step (102) and a shunt pipe (103) connected in sequence, the bifurcated connecting sleeve (101) being sleeved on the gas gun nozzle (2), the outside of the bifurcated connecting sleeve (101) being sleeved with a locking ring (104) and locked by a bolt (105).

3. The split-arboring silencing filter of claim 2, wherein: The butt-joint sound-absorbing shell (3) is sealed and sleeved on the fixed step (102) at one end.

4. The split-arboring silencing filter of claim 2, wherein: The shunt pipe (103) is open at the first end and closed at the last end, and a plurality of shunt holes are arranged at the middle part in a circumferential direction.

5. The split-arboring silencing filter of claim 1, wherein: The filter reinforcing shell (5) is sleeved outside the butt-joint sound-absorbing shell (3), the outside of the butt-joint sound-absorbing shell (3) being provided with a limiting protrusion (301), the filter reinforcing shell (5) being provided with a rotating limiting groove (501) corresponding to the limiting protrusion (301), the filter reinforcing shell (5) being sleeved outside the butt-joint sound-absorbing shell (3) and the limiting protrusion (301) being inserted into the rotating limiting groove (501), and axial fixation being achieved by rotating the filter reinforcing shell (5).

6. The split-arboring silencing filter of claim 1, wherein: The activated carbon filter element (6) is arranged in the axial cross section of the filter reinforcing shell (5) corresponding to the butt-joint sound-absorbing cavity, and the sound-absorbing nozzle (7) is arranged at the filtering end of the activated carbon filter element (6).

7. An air gun characterized by: The gas gun nozzle (2) is sleeved with the shunt butt-joint sound-absorbing filter of claim 1.

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