CN201416531Y - Triggered direction changing device of pneumatic reciprocating pump - Google Patents
Triggered direction changing device of pneumatic reciprocating pump Download PDFInfo
- Publication number
- CN201416531Y CN201416531Y CN2009201268089U CN200920126808U CN201416531Y CN 201416531 Y CN201416531 Y CN 201416531Y CN 2009201268089 U CN2009201268089 U CN 2009201268089U CN 200920126808 U CN200920126808 U CN 200920126808U CN 201416531 Y CN201416531 Y CN 201416531Y
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- spring
- piston
- commutation
- direction changing
- push rod
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Abstract
The utility model relates to a triggered direction changing device of a pneumatic reciprocating pump, which aims to solve the defects that the direction changing device of the pneumatic reciprocatingpump for a pneumatic-type airless spraying unit adopting the mechanical direction changing method is too large to be placed in a small piston (the diameter thereof is lower than 32). The triggered direction changing device has the advantages that the lengths of a direction changing jacking rod and a piston rod are shortened, and the height of the pump base is reduced through changing the directionchanging principle, arranging a spring bushing at the lower end of the direction changing jacking rod, locking the spring of the jacking rod with a locking device and finally putting such parts in the piston rod; the structure of the pump body is compact, the volume is small, and the movement is convenient, therefore, the triggered direction changing device is extensively applicable to the pneumatic-type airless spraying units or the relative industrial field.
Description
Technical field
The utility model relates to a kind of machinery that is applicable to external coating, is specifically related to a kind of pneumatic reciprocating pump of mechanical commutation valve commutation pneumatic type airless sprayer that adopts and triggers reversing arrangement.
Background technique
Airless sprayer is very extensive in metal processing and building field application, is the main manufacturing technique for painting dressing equipment of industries such as boats and ships, automobile, bridge, steel construction piece, machine-building, civil building.Have coating consume less,, outstanding advantage that manufacturing efficiency high little to pollution of atmosphere.The special adaptation, be used for coated article large size, coating operation that enamelled coating is thick.
Airless sprayer divides three kinds of forms according to the difference of driving mode: a kind of is the pneumatic type airless sprayer; Two kinds is the electrodynamic type airless sprayer; Three kinds is oil-engine driven airless sprayer.The pneumatic type airless sprayer is divided into again according to the difference of pneumatic motor reversing principle: a kind of is the Pneumatic-control type airless sprayer.It forms the reversing control system of pneumatic motor by two pilot valves and main control valve, and air valve is many, and Sealing is easy to wear, poor reliability.Another kind is to utilize the reciprocating motion of the pistons compression to push spring, along with the progressive increase of decrement, elastic force increases, when coupling mechanism force that the thrust of push rod produces greater than commutation valve body lock pin spring, owing to push the energy storage effect of spring, the commutation valve body to opposite conducting station, is realized the branch integral expression airless sprayer of to-and-fro motion commutation by instantaneous bullet.Its motion compresses by piston pushes spring and pushes (pulling) commutation push rod, and the commutation valve body is by the opposite conducting station of moment bullet, is in and realizes reciprocating commutation on the different working positions by changing the commutation valve body.Reversing arrangement is a mechanical structure, long service life.But push spring force that spring produces and promote the commutation valve body and realize commutation owing to utilize, to require that the spring structure size is big, spring force big, elasticity requires highly, the reliability of commutation reduces because of spring fatigue.The commutation push rod is long, pump seat is high, body is huge, crank, manufacture cost height.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of thrust or pulling force that produces by piston motion to remove to trigger the pneumatic reciprocating pump that to-and-fro motion commutates, and commutation pushes device and partly inserts among the piston rod.
For achieving the above object, the technical solution adopted in the utility model:
Piston, piston rod, pump seat plate, cylinder block are formed a pneumatic type reciprocating pump.Piston, piston rod are mutually with being threaded.The installing piston into cylinder body, cylinder block is installed on the pump seat plate, the cylinder block upper-end surface is equipped with the commutation valve seat, the upper end of commutation push rod is connected with changeover valve core and roll sleeve and locking spring is installed, commutation push rod lower end is provided with spring bushing, push rod spring is locked with locking device, inserts among the piston rod in the lump.
For better effect:
Push rod spring is φ 3～φ 3.2 Spring Steel Wires, spring external diameter φ 22～φ 23.
Diameter of piston rod Φ 31～Φ 32.
The utility model is by changing reversing principle, commutation push rod lower end is provided with spring bushing, push rod spring is locked with locking device, insert in the lump among the piston rod when piston motion, press spring bushing, the compression push rod spring pushes away (drawing) and moves to push rod, pushing away (drawing) moves to push rod and moves together with changeover valve core, under the effect on changeover valve core Dou limit, locking spring is fully compressed is in ultimate state until roll sleeve, but can not open by spring force, piston continues to move the compression push rod spring, when the gap between the spring bushing is crushed to death (H be zero time), the commutation push rod is touched (backing down) locking spring down by the effect of piston power power, changeover valve core together with the commutation push rod by bullet rapidly to another station, pneumatic reciprocating pump is realized commutation, to the requirement reduction of elastic force.The physical dimension of push rod spring is very little, can adorn the push rod bottom and place among the piston rod of size less than Φ 32, realizes shortening the length of commutation push rod and piston rod, reduces the pump seat height, makes pump body structure compactness, volume little, conveniently moving.Can be widely used in pneumatic type airless sprayer and related industries field
(or pulling force) of producing by the pneumatic motor piston motion goes to trigger reversing arrangement realization to-and-fro motion commutation.During the pneumatic motor starting, piston moves compression valve body shift spring, and spring force progressively increases, and the valve body shift spring is by constantly compression and energy storage, the valve body shift spring was fully compressed when piston moved to the commutating pole point of accumulation, but the spring force deficiency is pushed lock pin spring open and saved up strength to start out.At this moment, the piston rod end is resisted commutation push rod lower end stubbornly, and the latching mechanism of commutation valve body is moved by piston and produces huge thrust and back down, and is triggered at any moment, and springing commutation valve body moment to opposite conducting station, is realized commutation by bullet.That is to say, the main huge thrust (or pulling force) that produces by reciprocating motion of the pistons of the selector valve commutation that the technical program is set forth triggers commutation, the valve body shift spring only works to do springing valve body moment and moves to opposite conducting station, and little to the requirement of elastic force, spring is very little.Push device owing to the mechanical force of moving generation by piston promotes (pulling) commutation in addition, trigger commutation, its reliability that commutates does not reduce because of spring fatigue elasticity.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model one example structure schematic representation.
Fig. 2 is the A-A sectional view of Fig. 1
Embodiment
Referring to Fig. 1, when the utility model triggers reversing arrangement and uses as a kind of pneumatic reciprocating pump with piston 10, pump seat plate 11, pneumatic type reciprocating pump of cylinder block 4 compositions.Piston 10, piston rod 1 are mutually with being threaded.Piston 10 cylinder block 4 of packing into, cylinder block 4 is installed on the pump seat plate 11.Cylinder block 4 has two gas-entered passageways, and an access portal is in cylinder block 4 lower ends, and another is opened in cylinder block 4 upper ends.Cylinder block 4 upper-end surfaces are equipped with commutation valve seat 5, and commutation valve seat 5 has two working positions (up station I and descending station II).When piston stroking upward, up station I gas-entered passageway, an end is connected with source of the gas Q, and the other end is connected with cylinder block 4 lower end air inlet port b.Station II is the exhaust passage, and an end is connected with cylinder block 4 upper end gas-entered passageways, and the other end and atmosphere are connected.The upper end of commutation push rod 3 is connected with changeover valve core 7 and roll sleeve 18 and locking spring 15 is installed.Commutation push rod 3 lower end mounting spring linings 12, push rod spring 13, and screw with nut 14.
Its working principle is: at first connect source of the gas, pressurized air enters commutation valve seat 5 from passage Q, and commutation valve seat 5 is by up station I, and pressurized air enters cylinder block 4 lower end suction port b by data feedback channel, and it is up to promote piston 10.When being up to certain position, piston rod 1 lower end endoporus step promotes spring bushing 12, compression push rod spring 13 promotes commutation push rod 3, push commutation push rod 3 together with moving on the changeover valve core 7, under the effect on changeover valve core 7 Dou limits, locking spring 15 is fully compressed until roll sleeve 19 is in limit dress attitude, but can not open by spring force.When piston 10 continues up compression push rod spring 13, as the gap between the spring bushing 12 be crushed to death (H be zero time), commutation push rod 3 is touched (backing down) locking spring 15 down by the effect of piston 10 up power, bullet is to descending station rapidly together with commutation push rod 3 quilts for changeover valve core 10, and promptly pneumatic reciprocating pump is realized commutation.Pressurized air changes from passage a and enters cylinder block 4 upper end suction ports, it is descending that pressurized air promotes piston 4, when going downwards to certain position, step in piston 10 upper ends, press spring bushing 12, compression push rod spring 13 pulling commutation push rods 3, pulling commutation push rod 3 moves down together with changeover valve core 7, under the effect on changeover valve core 7 Dou limits, locking spring 15 is fully compressed is in ultimate state until roll sleeve 18, but can not open by spring force, piston continues descending compression push rod spring 13, and when the gap between the spring bushing 12 is crushed to death (H be zero time), commutation push rod 3 is touched (backing down) locking spring 15 down by piston 10 descending power effects, bullet is to up station rapidly together with commutation push rod 3 quilts for changeover valve core 7, and pneumatic reciprocating pump is realized commutation once more.So go round and begin again, this device triggers the to-and-fro motion commutation, realizes the to-and-fro motion that does not stop.
Claims (3)
1, a kind of triggering reversing arrangement of pneumatic type reciprocating pump, piston (10), piston rod (1), pump seat plate (11), cylinder block (4) is formed a pneumatic type reciprocating pump, piston (10), piston rod (1) is mutually with being threaded, piston (10) cylinder block (4) of packing into, cylinder block (4) is installed on the pump seat plate (11), cylinder block (4) upper-end surface is equipped with commutation valve seat (5), the upper end of commutation push rod (3) is connected with changeover valve core (7) and roll sleeve (18) and locking spring (15) is installed, it is characterized in that: commutation push rod (3) lower end is provided with spring bushing (12), push rod spring (13) is inserted among the piston rod (1) in the lump with locking device locking.
2, the triggering reversing arrangement of pneumatic type reciprocating pump as claimed in claim 1 is characterized in that: push rod spring (13) is φ 3～φ 3.2 Spring Steel Wires, spring external diameter φ 22～φ 23.
3, the triggering reversing arrangement of pneumatic type reciprocating pump as claimed in claim 1 is characterized in that: piston rod (1) diameter of phi 31～Φ 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201268089U CN201416531Y (en) | 2009-03-27 | 2009-03-27 | Triggered direction changing device of pneumatic reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201268089U CN201416531Y (en) | 2009-03-27 | 2009-03-27 | Triggered direction changing device of pneumatic reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416531Y true CN201416531Y (en) | 2010-03-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201268089U Expired - Fee Related CN201416531Y (en) | 2009-03-27 | 2009-03-27 | Triggered direction changing device of pneumatic reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201416531Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920612A (en) * | 2014-04-24 | 2014-07-16 | 重庆长江涂装设备有限责任公司 | Non-dead point reversing assembly of pneumatic airless sprayer |
| CN108361170A (en) * | 2018-02-26 | 2018-08-03 | 浙江斯耐尔涂装设备制造有限公司 | Flush coater high-pressure pump |
-
2009
- 2009-03-27 CN CN2009201268089U patent/CN201416531Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920612A (en) * | 2014-04-24 | 2014-07-16 | 重庆长江涂装设备有限责任公司 | Non-dead point reversing assembly of pneumatic airless sprayer |
| CN108361170A (en) * | 2018-02-26 | 2018-08-03 | 浙江斯耐尔涂装设备制造有限公司 | Flush coater high-pressure pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20130327 |