CN202805352U - Piston used for micro-explosion device in wood - Google Patents
Piston used for micro-explosion device in wood Download PDFInfo
- Publication number
- CN202805352U CN202805352U CN 201220518814 CN201220518814U CN202805352U CN 202805352 U CN202805352 U CN 202805352U CN 201220518814 CN201220518814 CN 201220518814 CN 201220518814 U CN201220518814 U CN 201220518814U CN 202805352 U CN202805352 U CN 202805352U
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Abstract
The utility model relates to the field of wood explosion, in particular to a piston used for a micro-explosion device in wood. The micro-explosion device in wood comprises a high pressure cylinder used for containing the wood and a piston cylinder connected with the high pressure cylinder in series, a partition board is fixed between the high pressure cylinder and the piston cylinder, and a decompression hole communicating the high pressure cylinder and the piston cylinder is arranged on the partition board. An air discharge hole communicated with the external is arranged on the cylinder wall of the piston cylinder close to the partition board, and the piston capable of abutting against and sealing the decompression hole is arranged in the piston cylinder. The piston comprises a sealing plate capable of abutting against and sealing the decompression hole and a piston plate in sliding fit with the piston cylinder. The radial size of the sealing plate is smaller than the radial size of the piston plate. The piston plate avoids the air discharge hole and forms a sealing cavity with end covers of the piston cylinder in the state that the sealing plate abuts against and seals the decompression hole. The piston is low in cost and convenient to operate due to the split mode.
Description
Technical field
The utility model relates to timber explosion field, relates in particular to a kind of piston for micro-blasting device inside lumber in timber explosion field.
Background technology
Timber is that the connection between them depends on again pitpair by big or small, that shape is different with structure tissue and cellularity, and therefore, whether tissue, cell and pitpair be penetrating, is the comparatively key factor that affects timber transparent performance and Wooden modifying.General this micro-blasting device inside lumber relates to is under the complete condition of the physical and mechanical property that keeps timber itself and outward appearance, abrupt release by timber internal high pressure gas and part water under high pressure, high velocity air is gone out to the outside from timber inside, tissue, cell and the pitpair of dredging timber inside, destroy the structure of torus, thus sufficient improved wood transparent performance.
Granted publication number discloses a kind of micro-blasting device inside lumber for the Chinese utility model patent specification of CN201143711Y, comprise cylinder body, drive end bearing bracket, rear end cap, dividing plate, piston, drive end bearing bracket is fixed on the cylinder body by fastening bolt, rear end cap also is fixed on the cylinder body by fastening bolt, dividing plate is arranged in the cylinder body, dividing plate has centre bore, the Quick air-discharge hole is arranged on the cylinder wall, piston can move in cylinder body, and with damping hole, front and back position is by dividing plate and rear end cap restriction, and port is stamped in the rear end, links with air compressor machine and air bleeding valve.Two chambeies were separated by dividing plate about cylinder body divided.Left chamber is working chamber, is used for being in sealing state during work to the timber pressurization; Right chamber is piston cylinder, and built-in piston is used to open or close the working chamber on the left side, can realize filling gases at high pressure to working chamber by the damping hole at piston center.Its operation principle is: for realizing the inner micro-explosion of timber, at first must make the inner high pressure that produces of timber.Timber to be placed in the container of sealing for this reason, in container, be filled with gases at high pressure, behind the pressurize certain hour, make the pressure of timber inside and the gas pressure in the container reach balance, the timber internal pressure raises, and then container moment is opened, and internal gas discharges fast, pressure decreased, timber are finished the process of micro-explosion under the effect of inside and outside differential pressure.In this device, the piston of its use is one-piece piston, and in the practical application, because the requirement of sealing, make with the piston plate of rear end cap contact that precision is relative has relatively high expectations, the piston plate that contacts with dividing plate is made required precision and is hanged down and can satisfy the demand, and one-piece piston can not be distinguished required precision, can only all make high-precision, in addition, when piston need to be changed, also get integral replacing, increased unnecessary cost.
The utility model content
Technical problem to be solved in the utility model provides the piston that a kind of cost is very low, replacing is used for micro-blasting device inside lumber more easily.
For solving the problems of the technologies described above, the technical scheme that the utility model uses is: a kind of piston for micro-blasting device inside lumber, this micro-blasting device inside lumber comprise the piston cylinder that is connected in series be used to the high pressure cylinder that holds timber, with this high pressure cylinder; Be fixed with dividing plate between this high pressure cylinder and the piston cylinder, offer the relief hole that is communicated with high pressure cylinder and piston cylinder on this dividing plate; Offer the steam vent that is in communication with the outside on the cylinder wall that this piston cylinder and dividing plate close on, be provided with the piston that can support and seal relief hole in this piston cylinder, described piston comprises the piston plate that is slidingly matched with the sealing plate that can support and seal described relief hole, with piston cylinder; Sealing plate radial dimension is less than the radial dimension of piston plate; Support and seal the relief hole state at sealing plate, this piston plate is dodged steam vent and is formed annular seal space with the piston cylinder end cap.
As further improvement of the utility model, described sealing plate and piston plate are bolted and are integral.
As further improvement of the utility model, it also comprises air inlet pipe, and this air inlet pipe runs through described sealing plate and piston plate and is communicated with described high pressure cylinder and piston cylinder, is provided with check valve in this air inlet pipe, and this check valve makes gas unidirectional enter high pressure cylinder.
As further improvement of the utility model, be provided with the guide rod that the described piston of guiding moves in described sealing plate and the piston plate, described guide rod two ends are spirally connected with described piston cylinder end cap and described dividing plate respectively.
As further improvement of the utility model, the position that described guide rod closes on piston cylinder is arranged with buffer spring.
As further improvement of the utility model, described guide rod quantity has two or three, along circumferentially uniform.
As further improvement of the utility model, described sealing plate is provided with the inclined-plane, and this inclined-plane can mutually seal with relief hole and contact.
As further improvement of the utility model, the angle of inclination on described inclined-plane is 5 to 85 degree.
As further improvement of the utility model, the angle of inclination on described inclined-plane is 30 to 60 degree.
As further improvement of the utility model, be fixed with sealing gasket on the inclined-plane on the described sealing plate.
The utility model is owing to use Split piston, so it is made precision and can process as required, the making precision height of piston plate is to satisfy the requirement of sealing, and the making precision of sealing plate is low, can reduce cost of manufacture like this, in addition, when piston need to be changed, can change piston plate separately as required or sealing plate gets final product, do not need at every turn all with the piston integral replacing, and then reduced cost, easy to operate.
Description of drawings
Structure cross-sectional schematic when Fig. 1 is the utility model embodiment 1 piston seal.
Fig. 2 is the structure cross-sectional schematic of the utility model embodiment 1 piston when opening.
Fig. 3 is the sealing plate schematic side view of the utility model embodiment 1 piston.
Fig. 4 is the piston plate schematic side view of the utility model embodiment 1 piston.
Fig. 5 is the structure cross-sectional schematic of the utility model embodiment 2 when piston seal.
Fig. 6 is the structure cross-sectional schematic of the utility model embodiment 2 when piston is opened.
Fig. 7 is the sealing plate schematic side view of the utility model embodiment 2 pistons.
Fig. 8 is the piston plate schematic side view of the utility model embodiment 2 pistons.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described:
Embodiment 1: shown in Fig. 1-4, a kind of piston for micro-blasting device inside lumber, this micro-blasting device inside lumber comprise the piston cylinder 2 that is connected in series be used to the high pressure cylinder 1 that holds timber, with this high pressure cylinder 1; Be fixed with dividing plate 3 between this high pressure cylinder 1 and the piston cylinder 2, offer the relief hole 30 that is communicated with high pressure cylinder 1 and piston cylinder 2 on this dividing plate; Offer the steam vent 20 that is in communication with the outside on the cylinder wall that this piston cylinder 2 and dividing plate 3 close on, be provided with the piston 4 that to support and to seal relief hole 30 in this piston cylinder 2, piston 4 comprises the piston plate 42 that is slidingly matched with the sealing plate 41 that can support and seal described relief hole 30, with piston cylinder 2, sealing plate 41 and piston plate 42 link into an integrated entity by bolt 10, such connection can conveniently be processed and load and unload, and relatively saves simultaneously material; Sealing plate 41 radial dimensions are less than the radial dimension of piston plate 42; Support and seal relief hole 30 states at sealing plate 41, this piston plate 42 is dodged steam vent 20 and is formed annular seal space with piston cylinder 2 end caps.Can be provided with the air inlet pipe 40 of the connection high pressure cylinder 1 that runs through and piston cylinder 2 on the piston 4, be provided with check valve 5 in this air inlet pipe 40, this check valve 5 makes gas unidirectional enter high pressure cylinder 1, and check valve 5 has guaranteed to enter high pressure cylinder 1 interior gases at high pressure and can not run out of along air inlet pipe 40.
Embodiment 2: shown in 5-8, the difference of present embodiment and embodiment 1 only is, is provided with the guide rod 7 that the described piston of guiding moves in sealing plate 41 and the piston plate 42.The two ends of guide rod 7 are spirally connected with piston cylinder end cap 9 and dividing plate 3 respectively, guide rod 7 can make piston 4 more steady in motion process, reduce the friction of piston 4 and piston cylinder 2 side arms, prolong the service life of piston 4, in order to reach best effect, the quantity of guide rod 7 has two or three at least, along circumferentially uniform.The position that guide rod 7 closes on piston cylinder 2 is arranged with buffer spring 8, and when pressure release, piston 4 impulsive force to the right is larger, and buffer spring 8 can make piston 4 impulsive force to the right obtain buffering, and the impact force of reduction and end cap 9 prolongs the service life of piston.
Course of work embodiment 1 of the present utility model is identical with embodiment 2, and the below describes in detail as an example of embodiment 1 example, referring to Fig. 1 and Fig. 2:
As shown in Figure 1: will need the timber of explosion to put into high pressure cylinder 1, when carrying out explosion, gases at high pressure are filled with from air inlet 21, pushing piston 4 is to left movement, until with relief hole 30 close contacts, firmly compress relief hole 30 by the inclined-plane, the high pressure cylinder 1 at timber place is disconnected with steam vent 20, pressed gas enters in the high pressure cylinder 1 from air admission hole 40 afterwards, until the pressure of demolition set inside reaches balance, the air pressure of piston 4 both sides equates that because air admission hole 40 is provided with check valve 5, gases at high pressure can only enter and can not run out of from air admission hole 40 from air admission hole 40.Because sealing plate 41 radial dimensions of piston 4 are less than the radial dimension of piston plate 42, so piston 4 both sides lifting surface areas do not wait, the lifting surface area of piston plate 42 is greater than the lifting surface area of sealing plate 41, make piston 4 this moment suffered active force to the right less than active force left, produce making a concerted effort left, piston 4 is pressed on the relief hole 30 tightly.Timber bears the effect of gases at high pressure in high pressure cylinder 1, make its internal pressure and external pressure balance.
As shown in Figure 2: when the needs quick pressure releasing, gases at high pressure are got rid of from the air inlet 21 on piston 4 right sides, pressure in the piston cylinder 2 descends rapidly, make the suffered pressure in piston 4 right sides rapidly less than the suffered pressure in left side, cause piston 4 along knife bar 7 rapidly, move right stably, buffer spring 8 available buffer pistons 4 impulsive force to the right, reduce the impact force with end cap 9, relief hole 30 is opened simultaneously, gas in the high pressure cylinder 1 is discharged from steam vent 20 fast, the high pressure cylinder internal pressure sharply descends, and timber internal pressure gas is realized explosion rapidly to external diffusion.
To sum up, the utility model can be processed so it makes precision as required owing to use Split piston, and the making precision height of piston plate is to satisfy the requirement of sealing, the making precision of sealing plate is low, can reduce cost of manufacture like this, in addition, when piston need to be changed, can change piston plate separately as required or sealing plate gets final product, do not need at every turn all with the piston integral replacing, and then reduced cost, easy to operate.
Claims (10)
1. piston that is used for micro-blasting device inside lumber, this micro-blasting device inside lumber comprise the piston cylinder (2) that is connected in series be used to the high pressure cylinder that holds timber (1), with this high pressure cylinder (1); Be fixed with dividing plate (3) between this high pressure cylinder (1) and the piston cylinder (2), offer the relief hole (30) that is communicated with high pressure cylinder (1) and piston cylinder (2) on this dividing plate; Offer the steam vent (20) that is in communication with the outside on the cylinder wall that this piston cylinder (2) and dividing plate (3) close on, be provided with the piston (4) that can support and seal relief hole (30) in this piston cylinder (2), it is characterized in that: described piston (4) comprises the piston plate (42) that is slidingly matched with the sealing plate (41) that can support and seal described relief hole (30), with piston cylinder (2); Sealing plate (41) radial dimension is less than the radial dimension of piston plate (42); Support and seal relief hole (30) state at sealing plate (41), this piston plate (42) is dodged steam vent (20) and is formed annular seal space with piston cylinder (2) end cap.
2. a kind of piston for micro-blasting device inside lumber according to claim 2, it is characterized in that: described sealing plate (41) and piston plate (42) are bolted and are integral.
3. a kind of piston for micro-blasting device inside lumber according to claim 2, it is characterized in that: it also comprises air inlet pipe (40), this air inlet pipe (40) runs through described sealing plate (41) and piston plate (42) and is communicated with described high pressure cylinder (1) and piston cylinder (2), be provided with check valve (5) in this air inlet pipe (40), this check valve (5) makes gas unidirectional enter high pressure cylinder (1).
4. a kind of piston for micro-blasting device inside lumber according to claim 2, it is characterized in that: be provided with the mobile guide rod (7) of the described piston of guiding (4) in described sealing plate (41) and the piston plate (42), described guide rod (7) two ends are spirally connected with described piston cylinder (2) end cap and described dividing plate (3) respectively.
5. a kind of piston for micro-blasting device inside lumber according to claim 4, it is characterized in that: the position that described guide rod (7) closes on piston cylinder (2) is arranged with buffer spring (8).
6. a kind of piston for micro-blasting device inside lumber according to claim 4, it is characterized in that: described guide rod (7) quantity has two or three, along circumferentially uniform.
7. a kind of piston for micro-blasting device inside lumber according to claim 2, it is characterized in that: described sealing plate (41) is provided with the inclined-plane, this inclined-plane can with relief hole (30) mutually sealing contact.
8. a kind of piston for micro-blasting device inside lumber according to claim 7 is characterized in that: the angle of inclination on described inclined-plane is 5 to 85 degree.
9. a kind of piston for micro-blasting device inside lumber according to claim 7 is characterized in that: the angle of inclination on described inclined-plane is 30 to 60 degree.
10. a kind of piston for micro-blasting device inside lumber according to claim 7 is characterized in that: be fixed with sealing gasket on the inclined-plane on the described sealing plate (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518814 CN202805352U (en) | 2012-10-11 | 2012-10-11 | Piston used for micro-explosion device in wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518814 CN202805352U (en) | 2012-10-11 | 2012-10-11 | Piston used for micro-explosion device in wood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202805352U true CN202805352U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220518814 Expired - Fee Related CN202805352U (en) | 2012-10-11 | 2012-10-11 | Piston used for micro-explosion device in wood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202805352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873728A (en) * | 2012-10-11 | 2013-01-16 | 北京林业大学 | Piston used for micro blasting device within timber |
-
2012
- 2012-10-11 CN CN 201220518814 patent/CN202805352U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873728A (en) * | 2012-10-11 | 2013-01-16 | 北京林业大学 | Piston used for micro blasting device within timber |
| CN102873728B (en) * | 2012-10-11 | 2016-08-03 | 北京林业大学 | A kind of piston for micro-blasting device inside lumber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20171011 |