CN2420442Y

CN2420442Y - Polygonal tubular straight-way valve

Info

Publication number: CN2420442Y
Application number: CN 00220347
Authority: CN
Inventors: 顾晓宁; 顾余舜
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-19
Filing date: 2000-05-19
Publication date: 2001-02-21
Anticipated expiration: 2010-05-19

Abstract

The utility model provides a polygonal tubular straight flow valve, and relates to a working air valve for a host machine of a reciprocating piston air compressor. The polygonal tubular straight flow valve is composed of a valve body, a valve core, a valve sheet and a tapered flow guiding plug, wherein the outer wall of the valve core is provided with a polygonal barrel body, and the lower part of the barrel body is provided with a plurality of slantwise bar-shaped valve holes. The polygonal outer wall of the valve core is connected with the valve sheet; correspondingly, the valve body is provided with an inner polygonal shell body with large inner diameter, and the inner wall of the inner polygonal shell body is matched with the polygonal outer wall of the valve core fixed in the center of the valve body; a definite gap is formed between the polygonal outer wall of the valve core and the corresponding polygonal inner wall of the valve body. The inner lower end of the valve core is provided with the tapered flow guiding plug, and a plurality of air outlets corresponding to the slantwise bar-shaped valve holes of the valve core are arranged on the peripheral wall of the lower part of the valve body.

Description

Polygonal tubular straight-wavy valve

The utility model relates to a kind of work air valve that is used for the reciprocating-piston air compressor main frame.

Although traditional air compression machine host air valve of a great variety, has sheet structure, ring structure is also arranged, and also has bacterium shape structure, and they all have two common defectives:

The valve clearance passage is opened or closed to air-flow perpendicular to the valve block plane when 1, air valve was worked, and gas-flow resistance is big, and energy loss is also big.

2, valve block distributes on the air valve board plane, and its quantity is subjected to the restriction of cylinder bore size.Therefore reduce the airspeed of valve clearance, reduce energy loss, just be subjected to the restriction on the existing air valve structure, make its energy consumption bigger.And gas stream is directly proportional with the cube of flow velocity through the energy loss of valve clearance.

For addressing this problem, the someone has proposed the used for air compressor straight-wavy valve, and the main feature of this straight-wavy valve is, air-flow is along valve block plane slipstream mistake, near linear, and air-flow is significantly less than conventional construction to the impact and the flow resistance of valve block.Valve block distributes at solid space, and its quantity is subjected to the less-restrictive of cylinder area, and this makes reduction valve clearance airspeed become possibility.Though straight-wavy valve is a kind of efficient, energy-conservation, low noise, long-life air valve, because complex structure, manufacturability is poor, makes difficulty, still is in the laboratory research stage so far.Up to the present also there is not a kind of such straight-wavy valve of producing in batches to appear on the market.

The purpose of this utility model is exactly that it is good to propose a kind of manufacturability, the polygonal tubular straight-wavy valve of reliable operation in order to address the above problem.

Technical solution of the present utility model:

A kind of polygonal tubular straight-wavy valve, it is characterized in that it is by valve body, spool, valve block and taper water conservancy diversion plug are formed, spool is that outer wall is polygonal cylindrical shell, this cylindrical shell bottom has a plurality of oblique bar shaped valve openings, the position of corresponding each oblique bar shaped valve opening all is fixed with valve block separately on spool polygonal outer wall, correspondingly valve body is inwall and spool polygonal outer wall matches and internal diameter is big slightly inner polygon housing, spool is fixed on valve body central authorities, between its polygonal outer wall and the corresponding valve body polygonal inwall certain interval is arranged, the lift that constitutes valve block is spacing, the lower end is provided with taper water conservancy diversion plug in spool, has a plurality of on the bottom perisporium of valve body and the corresponding air outlet hole of each oblique bar shaped valve opening of spool.

The utility model is except that efficient, energy-conservation, the low noise with straight-wavy valve, long-life advantage, overcome the difficulty of its structure and technology simultaneously, make that its production technology is good, simple in structure, easy to manufacture, reliable operation is convenient to mass production, can effectively reduce the specific power of air compressor, energy-saving effect is very remarkable.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the worm's eye view in library.

As Fig. 1,2, the utility model is by valve body 1, spool 2, valve block 6 and taper water conservancy diversion plug 4 are formed, characteristics of the present utility model are: spool 2 is polygonal cylindrical shell for outer wall, this cylindrical shell bottom has a plurality of oblique bar shaped valve openings 5, the position of corresponding each oblique bar shaped valve opening 5 all is fixed with valve block 6 separately on spool 2 polygonal outer walls, correspondingly valve body 1 is inwall and the spool 2 inner polygon housing that the polygonal outer wall matches and internal diameter is big slightly, spool 2 is fixed on valve body 1 central authorities, between its polygonal outer wall and the corresponding valve body 1 polygonal inwall certain interval is arranged, the lift that constitutes valve block 6 is spacing.The lower end is provided with taper water conservancy diversion plug 4 in spool 2, has a plurality of on the bottom perisporium of valve body 1 and spool 2 each oblique bar shaped valve opening 5 corresponding air outlet hole 7.

In the utility model, the polygonal of spool 2 outer walls and valve body 1 inwall is preferably the even number polygonal.

Each bottom, limit that the utility model is preferably on the spool 2 polygonal outer walls all has oblique bar shaped valve opening 5, and correspondingly, spool is equipped with valve block 6 on 2 each limit, and they are fixed with one by screw 8, thereby with each self-corresponding bar shaped valve opening 5 unidirectional blocking.

The utility model spool 2 is as follows with the linkage structure of valve body 1:

Be connected with one section outer wall in spool 2 upper end-hole integral body and be circular cirque body 9, closely be fixed with annular connecting sleeve 10 on these cirque body 9 outer walls, correspondingly, in valve body 1 upper end-hole one step hole 11 that matches with annular connecting sleeve 10 external diameters is arranged, the peripheral edge portion that is fastened on the annular connecting sleeve 10 on spool 2 cirque body 9 is located in the step hole 11 of valve body 1 upper end-hole, be provided with seal ring 12 between them, their fastening nuts 13 by valve body 1 upper end collar extension compress and are connected as a single entity, realize spool 2 and the location of valve body 1 on radially reaching axially and be connected, and guarantee the definite gap of maintenance between spool 2 polygonal outer walls and the valve body 1 polygonal inwall.

In order to guarantee air compressor off-load operation under the controlled atmosphere state, the utility model is provided with unloading mechanism 14, this unloading mechanism 14 is by off-load cylinder 15, piston 16, piston rod 17, spring 18 and elasticity off-load pawl 19 constitute, piston 16 and piston rod 17 thereof are arranged in the off-load cylinder 15, piston rod 17 is provided with spring 18, piston rod 17 outer end activities are connected with off-load pawl dish 20, be fixed with many elasticity off-load pawls 19 on this off-load pawl dish 20, its quantity is identical with oblique bar shaped valve opening 5 quantity of spool 2, and each off-load pawl 19 stretches in the spool 2, and their lower end circular arc hook portion 21 just is against respectively on the ramp of each self-corresponding oblique bar hole 5 of spool 2.

When the utility model uses, the off-load cylinder 15 of unloading mechanism 14 is installed on the cylinder head 22 of air compressor by screw, its center is consistent with the center spool of the utility model straight-wavy valve, and the valve body 1 of straight-wavy valve is connected on the air valve plate 25 of air compressor by gland 23 and pressure cap 24.When the air compressor cylinder is descending, air-flow sucks spool 2 from valve body 1 top, push each valve block 6 at spool 2 each oblique bar hole 5 place open through 4 rectified actions of taper water conservancy diversion plug, air-flow from each oblique bar hole 5 of spool 2 by and flow into compresser cylinders along the tangential direction of each valve block 6 through the valve clearance passage of each valve opening 5 and each corresponding air outlet hole 7 of valve body 1, finish the breathing process of compressor.Its working resistance and air-flow significantly reduce the impact of valve block 6.When air-compressor piston walked to lower dead center, each valve block 6 was closed automatically on the spool 2.When air-compressor piston is up, the gas that compression has sucked, and from outlet valve, export.When air compressor adopted " controlled atmosphere " mode off-load operation, the utility model was furnished with unique unloading mechanism 14.The pilot pressure air-flow of air compressor flow regulator output flows into from the inlet hole 26 at off-load cylinder 15 tops, promotes piston 16 and descends, and pressure spring 18 makes elasticity off-load pawl 19 descending.Elasticity off-load pawl 19 is descending during through the oblique long strip valve opening 5 on spool 2 each limit, borrows self resilient radial outwards to eject, and valve block 6 is pushed open, and each valve opening 5 of spool 2 is opened wide.Like this, when air-compressor piston back and forth moves, suck the gas of cylinder, from oblique valve opening 5, discharge again.At this moment, the not defeated forced draft of air compressor is close to no-load running, guarantees that the safety of air compressor is moved automatically.

Claims

1, a kind of polygonal tubular straight-wavy valve, it is characterized in that it is by valve body, spool, valve block and taper water conservancy diversion plug are formed, spool is that outer wall is polygonal cylindrical shell, this cylindrical shell bottom has a plurality of oblique bar shaped valve openings, the position of corresponding each oblique bar shaped valve opening all is fixed with valve block separately on spool polygonal outer wall, correspondingly valve body is inwall and spool polygonal outer wall matches and internal diameter is big slightly inner polygon housing, spool is fixed on valve body central authorities, between its polygonal outer wall and the corresponding valve body polygonal inwall certain interval is arranged, the lift that constitutes valve block is spacing, the lower end is provided with taper water conservancy diversion plug in spool, has a plurality of on the bottom perisporium of valve body and the corresponding air outlet hole of each oblique bar shaped valve opening of spool.

2, polygonal tubular straight-wavy valve according to claim 1, the polygonal that it is characterized in that spool outer wall and valve interior wall is the even number polygonal.

3, polygonal tubular straight-wavy valve according to claim 1, it is characterized in that each bottom, limit on spool polygonal outer wall all has oblique bar shaped valve opening, correspondingly, spool is equipped with valve block on each limit, they are fixed with one by screw, thereby with each self-corresponding bar shaped valve opening unidirectional blocking.

4, polygonal tubular straight-wavy valve according to claim 1, the linkage structure that it is characterized in that spool and valve body is, be connected with one section outer wall in spool upper end-hole integral body and be circular cirque body, closely be fixed with annular connecting sleeve on this cirque body outer wall, correspondingly, in the valve body upper end-hole one step hole that matches with annular connecting sleeve external diameter is arranged, the peripheral edge portion that is fastened on the annular connecting sleeve on the spool cirque body is located in the step hole of valve body upper end-hole, be provided with seal ring between them, their fastening nuts by valve body upper end collar extension compress and are connected as a single entity, realize spool and the location of valve body on radially reaching axially and be connected, and guarantee the definite gap of maintenance between spool polygonal outer wall and the valve body polygonal inwall.

5, polygonal tubular straight-wavy valve according to claim 1, it is characterized in that unloading mechanism is made of off-load cylinder, piston, piston rod, spring and elasticity off-load pawl, piston and piston rod thereof are arranged in the off-load cylinder, piston rod is provided with spring, the activity of piston rod outer end is connected with off-load pawl dish, be fixed with many elasticity off-load pawls on this off-load pawl dish, its quantity is identical with the oblique bar shaped valve opening quantity of spool, and each off-load pawl stretches in the spool, and their lower end circular arc hook portion just is against the ramp of each self-corresponding oblique bar hole of spool respectively.