JPH0746784Y2 - Gear pump - Google Patents
Gear pumpInfo
- Publication number
- JPH0746784Y2 JPH0746784Y2 JP1987176541U JP17654187U JPH0746784Y2 JP H0746784 Y2 JPH0746784 Y2 JP H0746784Y2 JP 1987176541 U JP1987176541 U JP 1987176541U JP 17654187 U JP17654187 U JP 17654187U JP H0746784 Y2 JPH0746784 Y2 JP H0746784Y2
- Authority
- JP
- Japan
- Prior art keywords
- seal
- gear
- groove
- seal groove
- lid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920003051 synthetic elastomer Polymers 0.000 claims description 4
- 239000005061 synthetic rubber Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Description
【考案の詳細な説明】 〔考案の目的〕 （産業上の利用分野） 本考案は、ギヤケースの内部に互いに外接する駆動ギヤ
と従動ギヤとを回転自在に軸支して設け、このギヤの端
面を摺動自在に支持する側板を設けたギヤポンプに係る
ものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention provides a drive case and a driven gear, which are circumscribed with each other, rotatably and axially supported inside a gear case, and an end surface of the gear. The present invention relates to a gear pump provided with a side plate for slidably supporting the.
（従来技術および解決しようとする問題点） 従来、この種のギヤポンプにおいては、ギヤーの噛み込
み側と反対側のギヤケースにそれぞれ吸入室と圧力室と
が形成され、側板とギヤケースとの間に、圧力室から吸
入室に液が漏洩することを防ぐために第11図〜第15図に
示すごとく、ニトリルゴム等の弾性のシールがシール溝
に係合して設けられ、このシールが圧力によつてシール
溝からはみ出して側板とギヤケースとの隙間に圧入され
ることを防ぐためにシール溝内にシールの圧力と反対側
に接して別体の四弗化エチレン樹脂等の剛性のバツクア
ツプが並設されていたが、この材料のバツクアツプはシ
ールの形状に合わせて成型することが困難であつたた
め、予め環状またはひも状に形成された材料を、作業者
が手で変形させながら組み込んでいた。したがつて組み
付けの工数が大で、製作費低減の障害となつていた。(Prior Art and Problems to Be Solved) Conventionally, in this type of gear pump, an intake chamber and a pressure chamber are formed in the gear case on the side opposite to the gear engagement side, and between the side plate and the gear case, In order to prevent the liquid from leaking from the pressure chamber to the suction chamber, as shown in FIGS. 11 to 15, an elastic seal such as nitrile rubber is provided in engagement with the seal groove. In order to prevent it from protruding from the seal groove and press-fitted into the gap between the side plate and the gear case, a rigid back-up such as a separate tetrafluoroethylene resin is provided in parallel inside the seal groove in contact with the side opposite to the seal pressure. However, since it was difficult to mold the back-up of this material to match the shape of the seal, the operator pre-assembled the material that had been formed into an annular shape or a string shape while manually deforming it. It had. Therefore, the man-hours required for assembly were large, which was an obstacle to reducing the production cost.
（問題点を解決するための手段および作用） 本考案は、本体部15に駆動ギヤ３の駆動軸11が貫通する
蓋13を係合し固着してギヤケース１を形成し、ギヤケー
ス１の内部に互いに外接する駆動ギヤ３と従動ギヤ５と
を回転自在に両側にて軸支して設け、前記駆動ギヤ３お
よび従動ギヤ５の端面と前記接合面との間を僅かの隙間
をもって軸方向に移動することによりこれらギヤの端面
を摺動自在に支持する側板33を反摺動面が前記接合面と
面一になるように設け、側板33の反摺動面側における圧
力室37と吸入室39への開口部を仕切るために、合成ゴム
製の弾性の環状の大きいシール47と、シール47に連結部
45において一体に連結された合成ゴム製の弾性の環状の
小さいシール49と、前記小さいシール49を内側から支持
する相似形状の合成樹脂製の剛性のバックアップ51とに
より一体のシール体53を所定の形状に形成して設け、蓋
13側の前記接合面に、シール体53の形状に適合するよう
に環状の大きいシール溝41、環状の小さいシール溝43及
びこれらの一部を連結する曲線状の連結部溝45aを形成
して連結部溝45a以外の両シール溝間の部分を平面のま
まに形成して設け、シール溝41にシール47を嵌合すると
共にシール溝43にシール49及びバックアップ51を嵌合
し、蓋13と本体部15を接合したとき、前記シール47が蓋
13のシール溝41と本体部15の接合面とにより挟持され、
シール49とバックアップ51が蓋13のシール溝43と側板33
の反摺動面とによって挟持されるようにして設けたもの
で、側板またはギヤケースに設けたシール溝に容易に係
合することができ、組み付け作業が容易となり、製作費
が低減するものである。(Means and Actions for Solving Problems) In the present invention, a lid 13 through which a drive shaft 11 of a drive gear 3 penetrates is engaged and fixed to a main body portion 15 to form a gear case 1, and the inside of the gear case 1 is formed. A drive gear 3 and a driven gear 5, which are circumscribed with each other, are rotatably supported on both sides, and are moved in the axial direction with a slight gap between the end surfaces of the drive gear 3 and the driven gear 5 and the joint surface. By so doing, the side plate 33 slidably supporting the end faces of these gears is provided so that the anti-sliding surface is flush with the joint surface, and the pressure chamber 37 and the suction chamber 39 on the anti-sliding surface side of the side plate 33 are provided. A large elastic ring seal 47 made of synthetic rubber and connected to the seal 47 to partition the opening to the
An elastic annular small seal 49 made of synthetic rubber integrally connected at 45, and a rigid backup 51 made of a synthetic resin of a similar shape that supports the small seal 49 from the inside to provide a predetermined integral seal body 53. Formed and provided with a lid
A large annular seal groove 41, a small annular seal groove 43, and a curved connecting groove 45a for connecting a part of these are formed on the joint surface on the 13 side so as to match the shape of the seal body 53. A portion between both seal grooves other than the connecting portion groove 45a is formed by being formed as a flat surface, a seal 47 is fitted in the seal groove 41, a seal 49 and a backup 51 are fitted in the seal groove 43, and a lid 13 is formed. When the main body 15 is joined, the seal 47 is covered.
It is sandwiched between the seal groove 41 of 13 and the joint surface of the main body 15,
The seal 49 and the backup 51 are the seal groove 43 and the side plate 33 of the lid 13.
It is provided so as to be sandwiched by the anti-sliding surface, and can be easily engaged with the seal groove provided on the side plate or the gear case, which facilitates the assembling work and reduces the manufacturing cost. .
（実施例） 以下、図面により本考案の一実施例について詳細な説明
を行なう。Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.
第１図〜第10図において、ギヤケース１は互に噛み合う
駆動ギヤ３と従動ギヤ５を内蔵して、軸受7,7…によつ
て回転自在に軸支している。ギヤケース１は本体ケース
９と、駆動軸11が貫通する前蓋13とよりなり、本体ケー
ス９は駆動ギヤ3,従動ギヤ５を内蔵する本体部15と、駆
動ギヤ3,従動ギヤ５のそれぞれの後側の軸17,19を軸支
する軸受部21とよりなる。前蓋13には駆動軸11と、被駆
動ギヤの前側の軸23とが軸支され、駆動軸11を密封する
オイルシール25がスナツプリング27によつて係止されて
いる。前蓋13はノツクピン29によつて位置決めされ、ボ
ルト31によつて本体ケース９に固着されている。駆動ギ
ヤ3,従動ギヤ５の前後の端面を摺動自在に支持するため
に耐摩耗性の材料よりなる側板33,35がギヤケース１の
内面との間に挿入されている。駆動ギヤ3,従動ギヤ５の
噛み合い側の側方には圧力室37が形成され、反対側の側
方には吸入室39が形成され、それぞれ本体部15の側面に
開口する吐出口（図示せず），吸入口（図示せず）に連
通している。前蓋13の内面（接合面）には、圧力室37,
吸入室39を囲う大きい環状のシール溝41が設けられ、そ
の中に、圧力室37と吸入室39を仕切る小さい環状のシー
ル溝43が設けられ、シール溝41とシール溝43とはその一
部（第２図中、左の低圧側部分）においてＣ型の曲線状
連結部溝45aにて連結して設けられ、両シール溝41,43の
その他の間の部分は平面のままに形成してある。又、こ
れらの溝にはまるように、シール溝41に嵌合するニトリ
ルゴム製（弾性）の大きい環状のシール47と、シール溝
43に嵌合するニトリルゴム製（弾性）の小さい環状のシ
ール49と、シール溝43内の低圧側にシール49とともに嵌
合するナイロン樹脂製（剛性）のバックアップ51とが連
結部45（連結部溝45aに嵌合するもの）で連結した形状
に一体に成形されたシール体53が設けられている。また
軸受部21側の側板35の外面には圧力室37と吸入室39とを
仕切るシール溝55が設けられ、ニトリルゴム製のシール
57の高圧，低圧側の両面にナイロン樹脂製のバツクアツ
プ59,61を一体に成型したシール体63が嵌合している。
両側のバツクアツプ59,61は適宜位置にシール57を貫通
する連結孔65によつて互いに連結している。1 to 10, a gear case 1 has a drive gear 3 and a driven gear 5 which mesh with each other and is incorporated therein, and is rotatably supported by bearings 7, 7. The gear case 1 is composed of a main body case 9 and a front lid 13 through which the drive shaft 11 penetrates. The main body case 9 includes a main body portion 15 in which the drive gear 3 and the driven gear 5 are incorporated, and the drive gear 3 and the driven gear 5 respectively. The bearing portion 21 supports the rear shafts 17 and 19. A drive shaft 11 and a shaft 23 on the front side of the driven gear are pivotally supported by the front lid 13, and an oil seal 25 for sealing the drive shaft 11 is locked by a snap ring 27. The front lid 13 is positioned by a knock pin 29 and fixed to the body case 9 by a bolt 31. Side plates 33 and 35 made of a wear-resistant material are inserted between the drive gear 3 and the driven gear 5 so as to slidably support the front and rear end faces of the drive gear 3 and the driven gear 5, respectively. A pressure chamber 37 is formed laterally on the meshing side of the drive gear 3 and the driven gear 5, and a suction chamber 39 is formed laterally on the opposite side. No.), and communicates with the suction port (not shown). On the inner surface (joint surface) of the front lid 13, pressure chambers 37,
A large annular seal groove 41 that surrounds the suction chamber 39 is provided, and a small annular seal groove 43 that partitions the pressure chamber 37 and the suction chamber 39 is provided therein, and the seal groove 41 and the seal groove 43 are part thereof. (The left low-pressure side portion in FIG. 2) is provided so as to be connected by a C-shaped curved connecting portion groove 45a, and the portion between the other of the seal grooves 41, 43 is formed flat. is there. In addition, an annular seal 47 made of nitrile rubber (elastic) having a large size and fitted in the seal groove 41 so as to fit in these grooves, and a seal groove
A ring-shaped seal 49 made of nitrile rubber (elasticity) that fits in 43 and a backup 51 made of nylon resin (rigidity) that fits together with the seal 49 on the low pressure side in the seal groove 43 are connected to each other. A seal body 53 that is integrally formed in a shape connected by a groove (which fits into the groove 45a) is provided. Further, a seal groove 55 for partitioning the pressure chamber 37 and the suction chamber 39 is provided on the outer surface of the side plate 35 on the bearing portion 21 side, and a seal made of nitrile rubber is provided.
Sealing bodies 63, in which nylon resin backup caps 59 and 61 are integrally molded, are fitted on both the high-pressure and low-pressure sides of 57.
The back-ups 59, 61 on both sides are connected to each other by connecting holes 65 penetrating the seal 57 at appropriate positions.
以上の構成において、駆動軸11によつて駆動ギヤ３と従
動ギヤ５が第２図の矢印Ａ方向に回転すると、液は吸入
口（図示せず）から吸入室39に入り、駆動ギヤ3,従動ギ
ヤ５のそれぞれの歯間で運ばれ圧力室37に送られ吐出口
（図示せず）から排出される。圧力室37の高圧の液はシ
ール49によつて密封されて吸入室39に漏れることがな
く、またシール47によつて外部への漏洩は防止される。
また、シール47,49,バツクアツプ51が１個のシール体53
に一体に形成され、またシール57,バツクアツプ59,61が
１個のシール体63として一体に形成されているので、組
み付けがきわめて容易となるものである。In the above structure, when the drive gear 3 and the driven gear 5 are rotated by the drive shaft 11 in the direction of arrow A in FIG. 2, the liquid enters the suction chamber 39 through the suction port (not shown), and the drive gear 3, It is carried between the teeth of the driven gear 5, sent to the pressure chamber 37, and discharged from a discharge port (not shown). The high-pressure liquid in the pressure chamber 37 is sealed by the seal 49 and does not leak to the suction chamber 39, and the seal 47 prevents leakage to the outside.
In addition, the seal 47, 49, the back-up 51 is a single seal body 53.
Since the seal 57 and the back up 59, 61 are integrally formed as one seal body 63, the assembly is extremely easy.
なお、本体ケース９を本体部15と軸受部21とに分割して
ボルト31によつて結合する方式のギヤポンプにおいて
は、シール体63にかえて、シール体53と同様のシール体
を用いればよい。In the gear pump of the type in which the main body case 9 is divided into the main body portion 15 and the bearing portion 21 and coupled by the bolts 31, a seal body similar to the seal body 53 may be used instead of the seal body 63. .
本考案によれば、シールおよびバツクアツプを一体とし
たシール体によつて組み付け作業を容易に行なうことが
でき、製作費を低減することができるものである。According to the present invention, the assembly work can be easily performed by using the seal body having the seal and the back-up integrated, and the manufacturing cost can be reduced.
なお、第11図〜第15図は従来例を示すもので、第１図〜
第10図に示す符号と同一の符号は同一の構成部分を表わ
すものである。第12図においては、シール47,49,バツク
アツプ51およびシール47のバツクアツプ67がすべて別体
に形成されている。また第14図においては、シール57と
バツクアツプ61は別体に形成されており、またシール溝
55を形成するために、別体の剛性のスペーサ69,71が係
合している。いずれも組み付けが厄介であり、製作費が
高価となるものである。Incidentally, FIGS. 11 to 15 show a conventional example, and FIGS.
The same reference numerals as those shown in FIG. 10 represent the same components. In FIG. 12, the seals 47, 49, the back-up 51 and the back-up 67 of the seal 47 are all formed separately. Also, in FIG. 14, the seal 57 and the back-up 61 are formed separately, and the seal groove
Separate rigid spacers 69, 71 engage to form 55. Both are difficult to assemble, and the production cost is high.
【図面の簡単な説明】 第１図は本考案の１実施例の側断面図、第２図は第１図
のII−II線の正断面図、第３図は第１図のIII−III線の
正断面図、第４図は本考案に係るシール体の正面図、第
５図，第６図，第７図はそれぞれ第４図のＶ−Ｖ線,VI
−VI線,VII−VII線の拡大側断面図、第８図は本考案に
係る他のシール体の正面図、第９図，第10図はそれぞれ
第８図のIX−IX線,X−Ｘ線の拡大側断面図、第11図は従
来例の正断面図、第12図，第13図はそれぞれ第11図のXI
I−XII線,XIII−XIII線の拡大側断面図、第14図は他の
従来例の正断面図、第15図は第14図のXV−XV線の拡大正
断面図である。 １…ギヤケース、３…駆動ギヤ ５…従動ギヤ、47,49…シール 51…バツクアツプ、53…シール体BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a front sectional view taken along line II-II of FIG. 1, and FIG. 3 is III-III of FIG. 4 is a front sectional view of the seal body according to the present invention, and FIGS. 5, 6, and 7 are respectively V-V line and VI of FIG.
-VI line, VII-VII line enlarged side sectional view, FIG. 8 is a front view of another seal body according to the present invention, and FIGS. 9 and 10 are IX-IX line and X- line of FIG. 8 respectively. An enlarged side sectional view of the X-ray, FIG. 11 is a front sectional view of a conventional example, and FIGS. 12 and 13 are respectively XI of FIG.
FIG. 14 is an enlarged side sectional view taken along lines I-XII and XIII-XIII, FIG. 14 is a front sectional view of another conventional example, and FIG. 15 is an enlarged front sectional view of line XV-XV in FIG. 1 ... Gear case, 3 ... Drive gear 5 ... Driven gear, 47, 49 ... Seal 51 ... Back up, 53 ... Seal body
Claims (1)
る蓋13を接合し固着してギヤケース１を形成し、ギヤケ
ース１の内部に互いに外接する駆動ギヤ３と従動ギヤ５
とを回転自在に両側にて軸支して設け、前記駆動ギヤ３
および従動ギヤ５の端面と前記接合面との間を僅かの隙
間をもって軸方向に移動することによりこれらギヤの端
面を摺動自在に支持する側板33を反摺動面が前記接合面
と面一になるように設け、側板33の反摺動面側における
圧力室37と吸入室39への開口部を仕切るために、合成ゴ
ム製の弾性の環状の大きいシール47と、シール47に連結
部45において一体に連結された合成ゴム製の弾性の環状
の小さいシール49と、前記小さいシール49を内側から支
持する相似形状の合成樹脂製の剛性のバックアップ51と
により一体のシール体53を所定の形状に形成して設け、
蓋13側の前記接合面に、シール体53の形状に適合するよ
うに環状の大きいシール溝41、環状の小さいシール溝43
及びこれらの一部を連結する曲線状の連結部溝45aを形
成して連結部溝45a以外の両シール溝間の部分を平面の
ままに形成して設け、シール溝41にシール47を嵌合する
と共にシール溝43にシール49及びバックアップ51を嵌合
し、蓋13と本体部15を接合したとき、前記シール47が蓋
13のシール溝41と本体部15の接合面とにより挟持され、
シール49とバックアップ51が蓋13のシール溝43と側板33
の反摺動面とによって挟持されることを特徴とするギヤ
ポンプ。1. A cover 13 through which a drive shaft 11 of a drive gear 3 penetrates is joined to a main body portion 15 to be fixed to form a gear case 1, and a drive gear 3 and a driven gear 5 which circumscribe each other inside the gear case 1.
And rotatably supported on both sides, and the drive gear 3
By moving the end face of the driven gear 5 and the joint face in the axial direction with a slight gap, the side plate 33 slidably supporting the end faces of these gears has the anti-sliding face flush with the joint face. And a large elastic ring seal 47 made of synthetic rubber and a connecting portion 45 to the seal 47 in order to partition the opening to the pressure chamber 37 and the suction chamber 39 on the side opposite to the sliding surface of the side plate 33. A synthetic rubber elastic annular small seal 49 integrally connected in, and a rigid backup 51 made of a similar shape synthetic resin that supports the small seal 49 from the inside to form an integral seal body 53 into a predetermined shape. It is formed and provided in
On the joint surface on the lid 13 side, a large annular seal groove 41 and an annular small seal groove 43 are formed so as to match the shape of the seal body 53.
And a curved connecting portion groove 45a for connecting a part of these is formed to form a portion between both seal grooves other than the connecting portion groove 45a as a flat surface, and a seal 47 is fitted into the seal groove 41. When the seal 49 and the backup 51 are fitted in the seal groove 43 and the lid 13 and the main body 15 are joined, the seal 47 is closed.
It is sandwiched between the seal groove 41 of 13 and the joint surface of the main body 15,
The seal 49 and the backup 51 are the seal groove 43 and the side plate 33 of the lid 13.
The gear pump is characterized in that it is sandwiched by the anti-sliding surface of the gear pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176541U JPH0746784Y2 (en) | 1987-11-20 | 1987-11-20 | Gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176541U JPH0746784Y2 (en) | 1987-11-20 | 1987-11-20 | Gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0180687U JPH0180687U (en) | 1989-05-30 |
| JPH0746784Y2 true JPH0746784Y2 (en) | 1995-10-25 |
Family
ID=31468271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176541U Expired - Lifetime JPH0746784Y2 (en) | 1987-11-20 | 1987-11-20 | Gear pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746784Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61187984U (en) * | 1985-05-15 | 1986-11-22 |
-
1987
- 1987-11-20 JP JP1987176541U patent/JPH0746784Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0180687U (en) | 1989-05-30 |
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