Gear pump

[Detailed Description of the Invention]

Field of the Invention The present invention relates to a gear pump. PRIOR ART The conventional gear pump attaches a pair of meshing gears to each axis, and comprises a bearing in support of [ so that rotation in a housing is possible ] these axes. It is the concentricity of the gear or a bearing axis as well as needing a bearing on the occasion of the manufacture, Wheel base accuracy of a housing and a bearing, etc. must be set up in comparatively high accuracy, For this reason, production and an assembly of parts take time and effort and expense, and it makes stabilization of performance, and improvement in efficiency difficult, Exchange of parts and adjustment work took time and effort, and also between gear axes had been fixed, and when hard particles were contained in feeding fluid for this reason, there was inconvenience, like they cause the poor operation of a Biting rare The pump between gears. Object of the Invention Then, an object of the present invention is to remove the inconvenience of prior art which was mentioned above, and to provide the gear pump of an easy and convenient form. Means for solving problem Namely, the housing in which the end opened the gear pump concerning the present invention and the gear stored in the state where it geared mutually, in the housing, It has an end board for closing the end where the above-mentioned housing was open, and the above-mentioned gear is characterized by the composition which touches slidably the above-mentioned housing and the above-mentioned end board, and is supported directly. OPERATION Therefore, the gear does not need the axis for supporting them, but it is directly supported with a housing and an end board, You can make it able to rotate smoothly convenient with the self-lubricity of those materials and feeding fluid, and the gear can move only the quantity according to processing accuracy slightly, it is displaced relatively, and an automatic alignment operation is also obtained. EXAMPLE Next, the present invention is explained based on the example of a drawing. The gear pump by the present invention shown in Drawings 1 and 2, Housing 1 with the open end, and drive side gear 2 stored in the state where it geared mutually, in the housing 1 and the follower side gear 3, It has end board 4 for closing the end where the above-mentioned housing 1 was open, and the above-mentioned housing 1 and end board 4 are made from the nylon resin material which mixed ceramics and glass, for example, and form end wall 5 and peripheral wall 6 in one. Although both the above-mentioned gears 2 and 3 are fabricated with the nylon resin material which mixed carbon, in order to make endurance improve, if an 11-sheet tooth and the above-mentioned follower side gear 3 make it the number of sheets which cannot be accepted mutually to consider it as a 12-sheet tooth etc., they are preferred for the above-mentioned drive side gear 2, for example. Inside 7 of end wall 5 of the above-mentioned housing 1 and inside 8 of the above-mentioned end board 4 are formed level mutually in parallel. Similarly, end faces 9 and 10 of the right-and-left both sides of the above-mentioned drive side gear 2 and end faces 11 and 12 of the right-and-left both sides of the above-mentioned follower side gear 3 are also formed level mutually in parallel, Inner skin 13 of peripheral wall 6 of the above-mentioned housing 1 is formed in the shape which was mostly in agreement with the outside outline in the state where both the above-mentioned gears 2 and 3 meshed. By such composition, both the above-mentioned gears 2 and 3 touch slidably inside 7 of end wall 5 of the above-mentioned housing 1 in end faces 9 and 11 of those right-hand side, inside 8 of the above-mentioned end board 4 is slidably touched in end faces 10 and 12 of those left-hand side, and it is supported rotatably directly. Sliding to the above-mentioned housing 1 and end boards 4 of gears 2 and 3, such as this, is performed the good self-lubricity which those materials mentioned above have, therefore smoothly. To the above-mentioned peripheral wall [ in / in the above-mentioned housing 1 / the both sides of the engagement portion of both the above-mentioned gears 2 and 3 ] 6, Population passage 14 and exit passage 15 are formed, respectively, and the above-mentioned drive gear 2 adheres driving shafts 16, such as a product made from ceramics excellent in the endurance which penetrates bearing boss section 17 by which end wall 5 of the above-mentioned housing 1 was fabricated heavy-gage from end face 9 of the right-hand side, and is prolonged to the exterior. As for the gear pump constituted as mentioned above, external power is transmitted to drive gear 2 through driving shaft 16 at the time of use, Fluid which drive gear 2 and driven gear 3 rotated in the direction of the arrow shown in Drawing 2, respectively, and flowed from entrance road 14 by that cause into the space between each cog in both wheels 2 and 3, Along with both gears 2 and 30 rotations, it is carried to the direction of exit passage 15 over inner skin 13 of peripheral wall 6 of housing 1, and also is fed from exit passage 15 outside. Although both gears 2 and 3 rotate the self-lubricity of those materials, therefore smoothly during this operation and both gears 2 and 3 are very few to housing 1 and end board 4, Relative movement according to processing accuracy is allowed, and one cog in both wheels 2 and 3 does not mesh with the tooth which is during one pre- revolution and meshed by the next rotation. Thus, the gear pump of this example can perform production and the assembly of parts easily, The inconvenience by Biting of a between [ the parts of the hard particulates in fluid ] can be prevented, it is stabilized, operation and performance of a pump can be maintained, and improvement in pump efficiency can be aimed at, and part clearing work can be performed easily. Details of an invention By composition of the explained present invention, it is stabilized, and the present invention can maintain operation and performance of a pump, and can aim at improvement in pump efficiency, and produces the effect of being able to perform part clearing work easily while it can perform production and the assembly of parts easily.

[Brief Description of the Drawings]

Drawing 1 is a rough section side view of the gear pump in which one example concerning the present invention is shown, and Drawing 2 is an II-II Arrow view figure of Drawing 1. 1 ... a housing and 2, 3 ... gear, 4 ... end board.