Pneumatic vibrator additionally provided with silencing device

Abstract

The utility model discloses a pneumatic vibrator additionally provided with a silencer, and belongs to the technical field of engineering machinery. According to the technical scheme, the pneumatic vibrator is composed of an inner rotor, an outer rotor, a shaft, a steel ball, an air pipe quick connector, an air inlet end cover, a machine shell, fan blades, an air outlet end cover and an exciting force adjusting device, a plurality of discharging holes are formed between an axial groove of the shaft and a blind hole, and a round hole is formed in the opposite portion of the axial groove. The air pipe quick joint is in threaded connection with the shaft at the left end of the shaft hole; the inner peripheries of the shaft holes of the air inlet end cover and the air outlet end cover are respectively provided with a notch opposite to the round hole of the shaft, and the round hole of the shaft is respectively provided with a steel ball opposite to the air inlet end cover and the air outlet end cover; a screw hole is formed in the center of the shaft air outlet end, a gap is reserved between the end face of the shaft air outlet end and the outer end face of the air outlet end cover, and the screw hole is machined in the outer end of an air outlet hole of the air outlet end cover. The device has the advantages of being high in adaptability, comfortable to operate, high in production efficiency, good in vibration effect, novel in design, reasonable in structure, safe and reliable.

Description

TECHNICAL FIELD

[0001] The pneumatic vibrator with a sound-attenuating device belongs to the technical field of engineering machinery. BACKGROUND

[0002] With the sustained and rapid development of China's national economy, the demand for pneumatic vibrators in various industries is increasing, especially in the fields of water conservancy and hydropower, underground mining, and concrete prefabricated components. Pneumatic vibrators are divided into pneumatic plug-in vibrators and pneumatic external vibrators, among which pneumatic external vibrators are more widely used. Pneumatic external vibrators use compressed air as a power source to remove air holes in concrete mixtures through vibration compaction, improve the strength of concrete structures, and shorten the setting time, especially suitable for working conditions with explosion-proof requirements. Our company is a professional enterprise specializing in the production of vibrating machinery, developing and producing various series of vibrating machinery such as electric, motorized, and pneumatic. In the field of pneumatic external vibrators, we first developed a pneumatic external vibrator that obtained a national patent with the patent number 200920088382.2. Later, we improved it by adding a leak-proof structure, which also obtained a national patent with the patent number 201920122945.9. After that, we improved the leak-proof structure again to obtain a national patent for "a pneumatic vibrator with an improved leak-proof mechanism" with the patent number 202120594443.3, and improved the air inlet structure to obtain a national patent for "a pneumatic external vibrator with an improved air inlet structure" with the patent number 202321059088.5. Technical innovation never stops, and in recent years we have found that pneumatic vibrators have the drawbacks of high noise during on-site use, which affects the physical and mental health of operators, and therefore need to be further studied and researched to solve this problem. SUMMARY

[0003] The purpose of the present utility model is to develop a pneumatic external vibrator with low noise to meet the urgent needs of the water conservancy and hydropower, underground mining, and concrete prefabricated component fields for pneumatic external vibrators.

[0004] The utility model discloses a technical scheme is: a kind of pneumatic vibrator consisting of inner rotor 1, outer rotor 2, shaft 5, steel ball 6, gas pipe quick connector 7, air inlet end cap 8, casing 9, fan blade 10, air outlet end cap 11, silencer 12, the axial slot of shaft 5 is provided with several row holes between blind hole, the opposite part of axial slot is provided with round hole, gas pipe quick connector 7 is connected with the left end of shaft hole in screw thread with shaft 5;The inner periphery of the shaft hole of air inlet end cap 8, air outlet end cap 11 and the opposite part of the round hole of shaft 5 are respectively provided with notches, the round hole of shaft 5 and the opposite part of air inlet end cap 8, air outlet end cap 11 are respectively provided with steel ball 6;The center of the air outlet end of shaft 5 is provided with screw hole, and its end surface and the outer end surface of air outlet end cap 11 leave gap, and the outer end of the air outlet hole of air outlet end cap 11 is machined into screw hole, and silencer 12 is installed.

[0005] The utility model discloses the beneficial effect is: solve the big problem of noise of pneumatic external vibrator in the present place use, greatly reduce noise intensity, improve the use comfort of operator, adjust convenient, simple structure, strong adaptability, comfortable operation, reliable operation, easy maintenance, high production efficiency, vibration effect is good, long in service life, wide application range, novel design, reasonable in structure, safe and reliable. DRAWINGS

[0006] Figure 1 It is the structure cross section schematic view of the utility model.

[0007] Figure 2 It is Figure 1 The structure schematic view of air outlet end cap 11 in.

[0008] Figure 3 It is Figure 2 A-A section schematic view of. SPECIFIC EMBODIMENT

[0009] The details and working process of the present application are described in detail in combination with the drawings of the present application. Obviously, the described embodiments are only one embodiment of the present application, rather than all embodiments. Based on the embodiments in the present application, other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. A pneumatic vibrator is composed of an inner rotor 1, an outer rotor 2, a shaft 5, a steel ball 6, a gas pipe quick connector 7, an air inlet end cover 8, a machine shell 9, a fan blade 10, an air outlet end cover 11 and a silencing device 12. A plurality of discharge holes are arranged between the axial slot and the blind hole of the shaft 5, and the opposite parts of the axial slot are provided with round holes. The gas pipe quick connector 7 is threadedly connected with the shaft 5 at the left end of the shaft hole. The inner circumferential surface of the shaft hole of the air inlet end cover 8 and the air outlet end cover 11 is respectively provided with a notch at the opposite part of the round hole of the shaft 5. The round hole of the shaft 5 is respectively provided with the steel ball 6 at the opposite part of the air inlet end cover 8 and the air outlet end cover 11. The center of the air outlet end of the shaft 5 is provided with a screw hole, and the end surface of the shaft 5 leaves a gap with the outer end surface of the air outlet end cover 11. The outer end of the air outlet hole of the air outlet end cover 11 is processed into a screw hole, and the silencing device 12 is installed. In addition, the pneumatic vibrator fastens the air inlet end cover 8 and the air outlet end cover 11 on the machine shell 9 by bolts, gaskets 3, nuts 4 and bolts. During operation, the gas pipe of the gas source is inserted into the gas pipe quick connector 7. The sealing ring in the gas pipe quick connector 7 has a sealing function, and the locking fin has a locking function. The gas pipe quick connector 7 is quickly and tightly locked with the pneumatic external vibrator, and is reliably sealed. Compressed air enters the blind hole of the shaft 5 from the gas pipe quick connector 7, passes through the discharge holes and the fan blade 10, blows the inner rotor 1, and then blows the eccentric outer rotor 2 around the inner rotor 1 through the air inlet pit on the air inlet end cover 8, so as to rotate and generate vibration. The vibration compacts the concrete, removes the air holes in the concrete mixture, improves the strength of the concrete structure, shortens the solidification time, and discharges the airflow through the air outlet pit on the air outlet end cover 11. Since the left end surface of the shaft 5 leaves a gap with the outer end surface of the air outlet end cover 11, the shaft 5 can be effectively tightened, and the shaft 5 is prevented from producing axial movement to cause the steel ball 6 to wear, so that the loosening of the steel ball 6 in the round hole of the shaft 5 and the notch of the air outlet end cover 11 and the notch of the air inlet end cover 8 is overcome, and the sealing effect of the pneumatic vibrator is effectively improved. The silencing device 12 is a silencer connected with the screw hole on the outer end of the air outlet hole of the air outlet end cover 11 in the form of a screw, which solves the old and difficult problem of loud noise of the pneumatic external vibrator in the field use, greatly reduces the noise intensity, and reduces the noise harm to the operators. The present application has the advantages of solving the old and difficult problem of loud noise of the pneumatic external vibrator in the field use, greatly reducing the noise intensity, improving the use comfort of the operators, being convenient to adjust, having a simple structure, strong adaptability, comfortable operation, reliable operation, convenient maintenance, high production efficiency, good vibration effect, long service life, wide application range, novel design, reasonable structure, safety and reliability.

Claims

1. A pneumatic vibrator equipped with a silencer, characterized in that: A pneumatic vibrator is composed of an inner rotor (1), an outer rotor (2), a shaft (5), a steel ball (6), an air pipe quick connector (7), an air inlet end cover (8), a housing (9), a fan blade (10), an air outlet end cover (11), and a silencer (12). A plurality of rows of holes are provided between the axial groove and the blind hole of the shaft (5), a circular hole is provided at the position opposite to the axial groove, and the air pipe quick connector (7) is connected to the shaft (5) at the left end of the axial hole by a thread; the inner circumferences of the axial holes of the air inlet end cover (8) and the air outlet end cover (11) and the positions opposite to the circular hole of the shaft (5) are respectively provided with notches, and the circular hole of the shaft (5) and the positions opposite to the air inlet end cover (8) and the air outlet end cover (11) are respectively provided with steel balls (6); a screw hole is provided at the center of the air outlet end of the shaft (5), and a gap is left between the end face of the screw hole and the outer end face of the air outlet end cover (11), a screw hole is processed at the outer end of the air outlet hole of the air outlet end cover (11), and a silencer (12) is installed.

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