CN218760341U

CN218760341U - Valve plate structure of oilless air compressor

Info

Publication number: CN218760341U
Application number: CN202223439323.XU
Authority: CN
Inventors: 王坚; 李臣; 孙安奎; 邹扬宁
Original assignee: Yuanfeng New Energy Yantai Co ltd
Current assignee: Yuanfeng New Energy Yantai Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-03-28
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a valve plate structure of an oil-free air compressor, which comprises a valve body (1), a valve block (2), a pressing plate (3) and a bolt (4), wherein the valve block is positioned between the valve body and the pressing plate; the centers of the valve block and the pressure plate are both provided with fixing holes (6), the center of the valve body is provided with a bolt hole, and a bolt penetrates through the fixing holes on the valve block and the pressure plate and is connected with the bolt hole shape, so that the valve body, the valve block and the pressure plate are tightly connected; the center of one side surface of the pressure plate facing the valve plate is provided with an annular boss (14); the method is characterized in that: a plurality of exhaust holes (7) are formed in the two sides of the valve body (1). The utility model discloses an oil-free air compressor's valve plate structure sets up to a plurality ofly through the exhaust hole with the valve body both sides for the effort of exerting on the valve block in the exhaust hole discharge in-process on the valve body is more even, has not only improved the life of valve block, has reduced gaseous impact force to the valve block moreover, and then has reduced the noise that produces when the valve block strikes the clamp plate.

Description

Valve plate structure of oilless air compressor

Technical Field

The utility model relates to a valve plate structure, more specifically the theory that says so especially relates to an oil-free air compressor's valve plate structure.

Background

The oil-free air compressor has extremely high cleanliness of the generated pressure gas, basically does not contain substances such as oil, moisture and the like, and has wide application in occasions where the pressure gas is not allowed to contain impurities. Oil-free air compressor utilizes the reciprocating cycle motion of piston link mechanism in the cylinder at the in-process of work, with external air suction and compression, the high pressure of the terminal production of compression is admitted air and is discharged through the valve plate structure, and air current gets into, air compression, compressed air all can produce the noise through the valve plate discharge in the course of the work, and this is also the main noise source of air compressor machine.

The noise generated in the process of discharging the compressed gas through the valve plate is mainly generated by knocking the pressing plate by the valve plate. The piston connecting rod mechanism is arranged at the compression tail end of the cylinder, and compressed air in the cylinder is larger than the pressure in the inner cavity of the top cylinder cover, so that the valve plate is pushed open by gas in the cylinder and enters the inner cavity of the top cylinder cover until the pressure is balanced, and the valve plate can be continuously switched between open and closed along with the further compression of the piston, so that the valve plate can continuously beat a pressing plate, and further noise is generated. The utility model discloses a valve plate structure is exactly the improvement that the noise that produces to this in-process proposed to effectively reduce or eliminate the noise that this in-process produced.

Disclosure of Invention

The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide an oil-free air compressor's valve plate structure.

The utility model discloses a valve plate structure of an oil-free air compressor, which comprises a valve body, a valve block, a pressing plate and a bolt, wherein the valve body is in a disc shape, the pressing plate is positioned at one side of the valve body, and the valve block is positioned between the valve body and the pressing plate; the centers of the valve block and the pressure plate are both provided with fixing holes, the center of the valve body is provided with a bolt hole, and a bolt penetrates through the fixing holes on the valve block and the pressure plate and is connected with the bolt hole, so that the valve block, the valve block and the pressure plate are tightly connected; the center of the surface of one side of the pressure plate, which faces the valve plate, is provided with an annular boss; the method is characterized in that: a plurality of exhaust holes are formed in the two sides of the valve body.

The utility model discloses an oil-free air compressor's valve plate structure, use its fixed orifices evenly to have seted up a plurality of clamp plate holes as the center on the clamp plate.

The utility model discloses an oil-free air compressor's valve plate structure, the valve block is the butterfly, and the left and right sides of valve block carries out the sealing of shutoff for the exhaust hole to the left and right sides on the valve body, and both sides are the breach around the valve block, have seted up the arc wall between the fixed orifices of sealing and valve block.

The utility model discloses an oil-free air compressor's valve plate structure, annular groove and last annular groove have been seted up down respectively to the periphery of valve body both sides face, are provided with down O type sealing washer and last O type sealing washer in lower annular groove, the last annular groove respectively.

The utility model discloses an oil-free air compressor's valve plate structure, the contact is compressed tightly with the outer terminal surface of cylinder to O type sealing washer down, goes up the interior terminal surface of O type sealing washer and top cylinder cap and compresses tightly the contact.

The utility model has the advantages that: the utility model discloses a valve plate structure of oil-free air compressor, through setting up the valve body structure that comprises valve body, valve block, clamp plate and bolt, valve body, valve block and clamp plate are through the bolt compression joint, and be provided with annular boss on the surface of clamp plate and valve block contact, when the atmospheric pressure of the valve body inboard (the compression chamber when using promptly) is greater than the pressure of the valve block outside (the top cylinder cap inner chamber when using promptly), under the effect of gas pressure, the position that the valve block and annular boss outer fringe contact takes place the bending and makes the exhaust hole exhaust; set up to a plurality ofly through the exhaust hole with the valve body both sides for the effort of applying on the valve block in the exhaust hole discharge process on the valve body is more even, all adopts an exhaust hole to compare with current both sides, has not only improved the life of valve block, has reduced the impact force of gas to the valve block moreover, and then has reduced the noise that the valve block produced when strikeing the clamp plate.

Furthermore, a pair of pressing plate holes are uniformly formed in the pressing plate by taking the central fixing hole as the center, so that when the valve plate bends and beats the pressing plate, the damage to the audio frequency and the sound spectrum of the noise in the closed space (namely the inner cavity of the top cylinder cover) is realized due to the existence of the plurality of pressing plate holes, the echo wall is prevented from being formed, and the noise is further reduced.

Drawings

Fig. 1 is a schematic structural view of a valve plate structure of the oil-free air compressor of the present invention;

fig. 2, fig. 3 and fig. 4 are exploded views of the valve plate structure of the oil-free air compressor of the present invention;

fig. 5 is a perspective view of the valve body of the present invention;

fig. 6 is a perspective view of the middle press plate of the present invention;

FIG. 7 is a perspective view of the middle valve plate of the present invention;

fig. 8 is the utility model discloses an application schematic diagram of oil-free air compressor's valve plate structure.

In the figure: 1 valve body, 2 valve plates, 3 clamp plates, 4 bolts, 5 bolt holes, 6 fixing holes, 7 exhaust holes, 8 clamp plate holes, 9 lower annular grooves, 10 upper annular grooves, 11 lower O-shaped sealing rings, 12 upper O-shaped sealing rings, 13 gaskets, 14 annular bosses, 15 sealing parts, 16 gaps, 17 arc-shaped grooves, 18 cylinders, 19 top cylinder covers, 20 piston connecting rod assemblies, 21 compression chambers and 22 top cylinder cover inner chambers.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1, given the utility model discloses an oil-free air compressor's valve plate structure's schematic structure, its structure explosion picture has been given in fig. 2, fig. 3 and fig. 4, and shown oil-free air compressor's valve plate structure comprises valve body 1, valve block 2, clamp plate 3 and bolt 4, and valve body 1 is the disc shape, and bolt hole 5 has been seted up to valve body 1's central authorities. The clamp plate 3 is located one side of valve body 1, and valve block 2 is located between valve body 1 and clamp plate 3, and fixed orifices 6 have all been seted up at the central authorities of valve block 2 and clamp plate 3, and bolt 4 passes fixed orifices 6 on clamp plate 3 and the valve block 2 and again with bolt hole 5 fixed connection on the valve body 1, links together with the inseparable compaction of clamp plate 3 with valve body 1 like this. In order to ensure the connection firmness, a gasket (13) is arranged in front of the bolt 4 and the pressure plate 3.

An annular boss 14 is arranged on the surface of the pressing plate 3, which is in contact with the valve plate 2, and the pressing plate 3 is tightly pressed with the valve plate 2 by virtue of the annular boss 14. Just because set up annular boss 14, just make the exhaust hole 7 on the valve body 1 open, when the pressure of the inboard (being the compression chamber 21) of valve body 1 was greater than the pressure of the outside (being the top cylinder cap inner chamber 22), pressure gas acted on valve block 2 through exhaust hole 7, made valve block 2 take place bending deformation with the contact position of valve block 2 and annular boss 14 outer fringe, exhaust hole 7 opened, realized the exhaust.

In current oil-free air compressor's valve plate structure, because one exhaust hole 7 has all only been seted up to valve body 1's both sides for the pressure gas of exhaust hole 7 exhaust is great to the impact force of valve block 2, and then leads to valve block 2 also great to the sound of striking of clamp plate 3, and this is one of the main sources of oil-free air compressor noise. Meanwhile, the impact force of one exhaust hole 7 on the valve plate 2 is large, so that the service life of the valve plate 2 is also prolonged. Therefore, in order to solve the problems of large noise and short service life of the valve plate 2 caused by adopting one exhaust hole 7, a plurality of (4 in the figure) exhaust holes 7 are respectively arranged on two sides of the valve body 1 in the valve plate structure, as shown in figure 5, a three-dimensional view of the valve body is provided, so that the pressure gas exhausted through the exhaust holes 7 can uniformly act on the valve plate 2, the impact of the pressure gas on the valve plate 2 is reduced, and the noise generated when the valve plate 2 strikes the pressing plate 3 is also reduced; and meanwhile, the service life of the valve plate 2 is prolonged.

As shown in fig. 6, the utility model discloses the stereogram of holding plate in, shown clamp plate 3 is circular, and fixed orifices 6 has been seted up at clamp plate 3's central authorities, uses fixed orifices 6 to evenly seted up a plurality of clamp plate holes 8 for circular on the clamp plate 3, like this, beat the in-process that clamp plate 3 produced the noise when valve block 2, because the existence of a plurality of clamp plate holes 8, realized the audio frequency to (being top cylinder cap inner chamber 22) noise in the airtight space, the destruction of music score, prevent to form the echo wall, thereby further reduced the noise.

As shown in fig. 7, the utility model discloses well valve block 2's stereogram, shown valve block 2 is the butterfly, and the left and right sides of valve block 2 is the sealing 15 to the exhaust hole 7 shutoff of the left and right sides on the valve body 1, and the backward both sides of valve block 2 are provided with breach 16, and like this, when internal pressure is less than external pressure, the sealing 15 of the left and right sides just sticiss on exhaust hole 7 on the valve block 2, realizes the sealed to exhaust hole 7. When the valve plate 2 bends to open the vent hole 7, the air flow can rapidly escape from the bottom of the valve plate 2 due to the existence of the notch 16. An arc-shaped groove 17 is formed between the sealing part 15 and the bolt hole 5, and the bending strength of the valve plate 2 can be improved by forming the arc-shaped groove 17, so that the service life of the valve plate 2 can be prolonged.

The periphery of two side surfaces of the valve body 1 is respectively provided with a lower annular groove 9 and an upper annular groove 10, the lower annular groove 9 and the upper annular groove 10 are respectively provided with a lower O-shaped sealing ring 11 and an upper O-shaped sealing ring 12, and the lower O-shaped sealing ring 11 and the upper O-shaped sealing ring 12 are used for respectively realizing the sealing of the contact parts of the lower O-shaped sealing ring 11 and the upper O-shaped sealing ring 12 with the cylinder 18 and the top cylinder cover 19.

As shown in fig. 8, the utility model discloses an oil-free air compressor's valve plate structure's application schematic diagram, it is shown the utility model discloses a valve plate structure sets up between cylinder 18 and top cylinder cap 19, and lower O type sealing washer 11 compresses tightly with the outer terminal surface of cylinder 18, goes up O type sealing washer 12 and realizes compressing tightly with the terminal surface in the top cylinder cap 19, has just so guaranteed the leakproofness of compression chamber 21 and top cap inner chamber 22. The compression chamber 21 of the cylinder 18 is shown with a piston and connecting rod assembly 20 disposed therein, whereby the generation and discharge of pressurized gas is accomplished by virtue of the reciprocating movement of the piston and connecting rod assembly 20 within the compression chamber 21.

During operation of the piston-connecting-rod assembly 20 in fig. 8 in the compression chamber 21: the piston connecting rod assembly 20 moves upwards, and when the gas pressure at the inner cavity 22 of the top cylinder cover is greater than the gas pressure of the compression chamber 21, the valve plate 2 is in a closed state; after the gas in the compression chamber 21 is higher than the gas pressure in the top cylinder cover inner cavity 22, the valve plate 2 is opened, and the gas flows into the top cylinder cover inner cavity 22 from the exhaust hole 7 in the valve plate body until the gas pressure is the same; the piston connecting rod assembly 20 moves downwards, gas enters the compression chamber 21 from the connecting rod, so that the gas pressure in the compression chamber 21 is smaller than the gas pressure in the inner cavity 22 of the top cylinder cover, the valve plate 2 is closed, and the automatic exhaust function of the valve plate structure assembly is realized.

Claims

1. A valve plate structure of an oil-free air compressor comprises a valve body (1), a valve block (2), a pressing plate (3) and a bolt (4), wherein the valve body is in a disc shape, the pressing plate is positioned on one side of the valve body, and the valve block is positioned between the valve body and the pressing plate; the centers of the valve block and the pressure plate are both provided with fixing holes (6), the center of the valve body is provided with a bolt hole, and a bolt penetrates through the fixing holes on the valve block and the pressure plate and is connected with the bolt hole shape, so that the valve body, the valve block and the pressure plate are tightly connected; the center of the surface of one side of the pressure plate, which faces the valve plate, is provided with an annular boss (14); the method is characterized in that: a plurality of exhaust holes (7) are formed in the two sides of the valve body (1).

2. The valve plate structure of an oil-free air compressor as claimed in claim 1, wherein: and a plurality of pressing plate holes (8) are uniformly formed in the pressing plate (3) by taking the fixing holes (6) as centers.

3. The valve plate structure of an oil-free air compressor as claimed in claim 1 or 2, wherein: the valve plate (2) is butterfly-shaped, the left side and the right side of the valve plate are sealing parts (15) for plugging exhaust holes (7) on the left side and the right side of the valve body (1), notches (16) are arranged on the front side and the rear side of the valve plate, and arc-shaped grooves (17) are formed between the sealing parts and fixing holes (6) of the valve plate.

4. The valve plate structure of an oil-free air compressor as claimed in claim 1 or 2, wherein: the periphery of two side faces of the valve body (1) is respectively provided with a lower annular groove (9) and an upper annular groove (10), and a lower O-shaped sealing ring (11) and an upper O-shaped sealing ring (12) are respectively arranged in the lower annular groove and the upper annular groove.

5. The valve plate structure of an oil-free air compressor as claimed in claim 4, wherein: the lower O-shaped sealing ring (11) is in pressing contact with the outer end face of the cylinder (18), and the upper O-shaped sealing ring (12) is in pressing contact with the inner end face of the top cylinder cover (19).