JPH0191079U

JPH0191079U -

Info

Publication number: JPH0191079U
Application number: JP18589287U
Authority: JP
Priority date: 1987-12-04
Filing date: 1987-12-04
Publication date: 1989-06-15
Anticipated expiration: 2002-12-04
Also published as: JPH088307Y2

Description

[Brief explanation of the drawing]

第１図から第１３図は本考案の実施例を示して
いる。第１図から第７図は第１実施例を示し、第
１図はブースタポンプの縦断面を示す図であつて
、第３図の−線矢視断面図、第２図は同第３
図の−線矢視断面図、第３図はブースタポン
プの平面図、第４図は２段式ブースタポンプの展
開状態を示す模式図、第５図はその組立て状態を
示す模式図、第６図は３段式ブースタポンプの組
立て状態を示す模式図で、第７図は変形例を示す
第５図相当の部分図である。第８図と第９図は第
２実施例を示し、第８図は第５図相当図、第９図
は第６図相当図である。第１０図は出力が異なる
機種のブースタポンプを示す模式図、第１１図は
ブースタポンプの出力と占有体積との関係を示す
図、第１２図は戻しばね力とシリンダ部の段数と
の関係を示す図、第１３図はブースタポンプの出
力とシリンダ部の段数との関係を示す図である。
第１４図は本考案の前提となる基本構造を示す模
式図である。第１５図と第１６図は従来例を示し
、第１５図はブースタポンプの縦断面図で、第１
６図は第１０図相当図である。１……ブースタポンプ、３……ピストン、５…
…プランジヤ、１０……ポンプ本体、１１……弁
ケース部、１２……シリンダ部、１３……プラン
ジヤケース部、２０……シリンダ室、２５……戻
しばね、２７……ばね受座、３０……弁装置室、
３１……空気圧給排切換用弁装置、３２……給圧
口、３３……排圧口、３７……空気圧給排切換用
指令具、３９……ポンプ室、Ｌ_１……他のシリン
ダ部の筒胴部１８の長さ、Ｌ_２……１つのシリン
ダ部の筒胴部１９の長さ、ｌ_１……弁ケース部戻
しばね２５ａのセツト長さ、ｌ_２……プランジヤ
ケース部側戻しばね２５ｂのセツト長さ、Ｆ_１…
…弁ケース部側戻しばね２５ａの張力、Ｆ_２……
プランジヤケース部側戻しばね２５ｂの張力、Ｘ
……プランジヤケース部１３の接続面、Ｙ……弁
ケース部側シリンダ部１２ａの接続面、Ｚ……プ
ランジヤケース部１３のシリンダ部側端面。 1 to 13 show embodiments of the present invention. 1 to 7 show the first embodiment, FIG. 1 is a vertical cross-sectional view of the booster pump, and FIG.
3 is a plan view of the booster pump, FIG. 4 is a schematic diagram showing the two-stage booster pump in its expanded state, FIG. 5 is a schematic diagram showing its assembled state, and FIG. The figure is a schematic view showing the assembled state of the three-stage booster pump, and FIG. 7 is a partial view corresponding to FIG. 5 showing a modified example. 8 and 9 show the second embodiment, with FIG. 8 being a diagram corresponding to FIG. 5, and FIG. 9 being a diagram corresponding to FIG. 6. Figure 10 is a schematic diagram showing booster pump models with different outputs, Figure 11 is a diagram showing the relationship between booster pump output and occupied volume, and Figure 12 is a diagram showing the relationship between return spring force and the number of stages in the cylinder section. The figure shown in FIG. 13 is a diagram showing the relationship between the output of the booster pump and the number of stages of the cylinder section.
FIG. 14 is a schematic diagram showing the basic structure that is the premise of the present invention. 15 and 16 show a conventional example, and FIG. 15 is a vertical cross-sectional view of the booster pump.
Figure 6 is a diagram equivalent to Figure 10. 1... Booster pump, 3... Piston, 5...
... Plunger, 10 ... Pump body, 11 ... Valve case part, 12 ... Cylinder part, 13 ... Plunger case part, 20 ... Cylinder chamber, 25 ... Return spring, 27 ... Spring seat, 30 ... ...valve device room,
31...Pneumatic supply/discharge switching valve device, 32...Pressure port, 33...Exhaust pressure port, 37...Pneumatic pressure supply/discharge switching command tool, 39...Pump chamber, _L1 ...Other cylinder parts L ₂ ... Length of the cylinder body 19 of one cylinder section, l ₁ ... Set length of the valve case return spring 25a, l ₂ ... Plunger case side return Set length of spring 25b, _F1 ...
...Tension of valve case side return spring 25a, F ₂ ...
Tension of plunger case side return spring 25b, X
. . . Connection surface of the plunger case portion 13, Y .

Claims

[Claims for Utility Model Registration] 1. The pump main body 10 of the booster pump 1 is constructed by arranging a valve case part 11, a cylinder part 12, and a plunger case part 13 in series in order, and the valve in the valve case part 11 Air pressure supply port 32 in the equipment room 30
and the exhaust pressure port 33, a valve device 31 for switching air pressure supply and exhaust is provided in the valve device chamber 30, a piston 3 is slidably fitted into the cylinder chamber 20 in the cylinder portion 12, and the plunger case portion 13 The plunger 5 is slidably inserted into the pump chamber 39 inside, and the pneumatic supply/discharge switching command tool 37 of the valve device 31, the piston 3, and the plunger 5 are connected in series, and the piston 3 is moved by the return spring 25. When the piston 3 is pressed toward the top dead center and is pushed back to the top dead center by the return spring 25, the valve device 31 is switched from the exhaust pressure state to the supply pressure state by a command from the command tool 37. , compressed air starts to be supplied from the pressure supply port 32 to the cylinder chamber 20 through the valve device 31, and in the pressure supply drive state where the compressed air is supplied to the cylinder chamber 20, the piston 3 is lowered by the air pressure in the cylinder chamber 20. After being driven forward to the dead center, the plunger 5
When the piston 3 is pushed to the bottom dead center by air pressure and the forward movement is completed, the valve device 31 is switched from the supply pressure state to the exhaust pressure state by the command of the command tool 37, and the inside of the cylinder chamber 20 is discharged. The compressed air starts to be discharged to the outside from the exhaust pressure port 33 through the valve device 31, and in the exhaust pressure return action state where the compressed air is discharged from the cylinder chamber 20, the piston 3 returns to the top dead center by the return spring 25. In a booster pump configured to perform a go-around operation and cause a suction operation of the plunger 5, a plurality of cylinder portions 12a, 1 are provided in the pump body 10.
2b are arranged in series, each of the plurality of cylinder parts 12
The same number of pistons 3a and 3b are slidably fitted into each of the cylinder chambers 20a and 20b of cylinders 12a and 12b, respectively, and one cylinder part 12b and 12a of the plurality of cylinder parts 12a and 12b is a valve case part. 11
and one of the plunger case parts 13, 11 and the other cylinder parts 12a, 12b.
In contrast, the cylinder bodies 1 of the other cylinder parts 12a and 12b are formed as independent parts and assembled in series.
The length _L1 of 8 is one cylinder portion 12b. 12
The length L2 of the barrel portion 19 of a is approximately equal to the length _L2 ,
Cylinder part 12b on one case part 13, 11 side
．． The connection surface X of one case part 13, 11 to 12a is the connection surface Y of the other case part 11, 13 side cylinder part 12a, 12b to one case part 13, 11 side cylinder part 12b, 12a. A booster pump characterized by being formed into a connectable shape. 2. The piston 3a on the side of the valve case part 11 and the piston 3b on the side of the plunger case part 13 are respectively pressed toward the top dead center side by the respective return springs 25a and 25b, and the spring seat 27 of the return spring 25b on the side of the plunger case part 13 is pressed. , the connection surface X of the plunger case part 13 is connected to the cylinder part side end surface Z of the plunger case part 13.
The set length _l1 of the return spring 25a on the valve case part 11 side is set to be deeper than the set length l1 of the return spring 25b on the plunger case part 13 side.
₂ , and the tension _F1 of the return spring 25a on the side of the valve case part 11 is set to a value smaller than the tension _F2 of the return spring 25b on the side of the plunger case part 13. The booster pump according to item 1 in the range.