Split type hose pump shell

Abstract

The utility model discloses a split type hose pump shell, and relates to the technical field of hose pumps, a front pump cover and a rear end cover are detachably connected to openings in the front end and the rear end of a circumferential enclosure bulkhead respectively, and a sleeve-shaped bearing seat is arranged in the middle of the rear end cover; the forming difficulty of all components of the pump shell is reduced, subsequent machining of the circumferential enclosure bulkhead, the front pump cover and the rear end cover is facilitated, especially machining of the inner side wall of the rear end cover becomes very simple, and therefore the machining efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hose pumps, in particular to a split hose pump housing. Background Art

[0002] The basic structure of a hose pump includes a pump casing and a hose placed inside the pump casing. The rotor bracket driven by the main shaft drives the roller to squeeze the hose to pump the medium; the utility model patent named "Hose Pump Housing" (document number CN206555122U) includes a circumferential wall and a rear end cover, and a bearing seat is arranged in the middle of the rear end cover; the circumferential wall and the rear end cover in the above document are integrally formed by a mold, which on the one hand leads to a complex mold structure and high production cost, and on the other hand, the circumferential wall and the rear end cover need to be fine-machined after molding, and the inner surface of the rear end cover is difficult to process. Utility Model Content

[0003] The purpose of the utility model is to provide a split hose pump housing, which adopts a split pump housing structure design to reduce the difficulty of processing.

[0004] The utility model can be realized through the following technical solutions: a split hose pump housing, the front and rear end openings of the circumferential wall are respectively detachably connected to the front pump cover and the rear end cover, and a sleeve-shaped bearing seat is provided in the middle of the rear end cover.

[0005] Compared with the prior art, the present invention has the following beneficial effects:

[0006] On the one hand, the structure of the mold is simplified, making the molding difficulty of each component of the pump casing lower; on the other hand, the circumferential wall, the front pump cover and the rear end cover can each be machined separately, especially the processing of the inner wall of the rear end cover becomes very simple, which is conducive to improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the three-dimensional structure of the circumferential wall;

[0008] Figure 2 This is the main view of the front pump cover;

[0009] Figure 3 yes Figure 2 MM section view;

[0010] Figure 4 This is the main view of the rear end cover;

[0011] Figure 5 for Figure 4 NN cross-sectional view;

[0012] Figure 6 It is a partial cross-sectional view of the circumferential wall when it is connected to the front pump cover and the rear end cover respectively. DETAILED DESCRIPTION

[0013] See also Figure 1-6 As shown, a split hose pump housing is shown, in which the front and rear end openings of the circumferential wall 10 are detachably connected to the front pump cover 20 and the rear end cover 30, and a sleeve-shaped bearing seat 31 is provided in the middle of the rear end cover 30; the circumferential wall 10, the front pump cover 20 and the rear end cover 30 are each formed separately. On the one hand, the structure of the mold is simplified, which reduces the difficulty of forming the various components of the pump housing. On the other hand, the circumferential wall 10, the front pump cover 20 and the rear end cover 30 can each be subjected to subsequent mechanical processing separately, especially the processing of the inner wall of the rear end cover 30 becomes very simple, which is conducive to improving processing efficiency; in addition, the circumferential wall 10 is detachable from the front pump cover 20 and the rear end cover 30, which is not only convenient for transportation, but also convenient for the replacement of individual components.

[0014] A front annular plate 11 and a rear annular plate 12 with plate surfaces perpendicular to the pump shaft direction are respectively provided at the front and rear end openings of the circumferential wall 10. Connecting holes for connecting the front pump cover 20 and the rear end cover 30 are correspondingly opened on the front annular plate 11 and the rear annular plate 12, and the hole cores of the connecting holes are parallel to the pump shaft direction; the circumferential wall 10 is annular as a whole, and the inner circle hole cores of the front annular plate 11 and the inner circle hole cores of the rear annular plate 12 are concentrically arranged with the tube core of the annular circumferential wall 10 respectively. The setting of the front annular plate 11 and the rear annular plate 12 is equivalent to forming a flange structure at the two end openings of the annular circumferential wall 10, which is convenient for connection with the front pump cover 20 and the rear end cover 30, and the connecting holes can be threaded holes.

[0015] Preferably, the periphery of the rear end cover 30 is in a stepped shape with a smaller outer thickness and a larger inner thickness in the radial direction. The step portion on the rear end cover 30 is inserted into the inner ring hole edge of the rear annular plate 12 to form a stop fit; the step portion on the rear end cover 30 includes a first rear end cover table 32, a rear end cover step 33 and a second rear end cover table 34. The rear end cover step 33 is fitted with the inner ring hole wall of the rear annular plate 12, and the second rear end cover table 34 is fitted with the side of the rear annular plate 12 away from the circumferential wall 10. Corresponding connecting holes are also provided on the rear end cover 30, and bolts are screwed into the rear end cover 30 and the rear annular plate 12 in sequence from the connecting holes to realize the connection between the rear end cover 30 and the circumferential wall 10; the rear end cover 30 is positioned by the rear annular plate 12, so that the concentricity of the hole core of the bearing hole on the rear end cover 30 and the tube core of the annular tubular circumferential wall 10 is guaranteed, ensuring the accuracy of the two after assembly, thereby ensuring that the degree of squeezing of the hose is uniform everywhere, ensuring the stability and pumping efficiency of the pumped medium.

[0016] Preferably, the periphery of the front pump cover 20 is in a stepped shape with a smaller outer thickness and a larger inner thickness in the radial direction, and the step portion on the front pump cover 20 is inserted into the inner ring hole edge of the front circular plate 11 to form a stop fit; the step portion of the front pump cover 20 includes a first front pump cover table 21, a front pump cover step 22 and a second front pump cover table 23, the front pump cover step 22 is fit-fittingly connected to the inner ring hole wall of the front circular plate 11, and the second front pump cover table 23 is fit-fittingly connected to the side of the front circular plate 11 away from the circumferential wall 10, and corresponding connecting holes are also provided on the front pump cover 20, and bolts are screwed into the front pump cover 20 and the front circular plate 11 in sequence from the connecting holes to realize the connection between the front pump cover 20 and the circumferential wall 10.

[0017] The front pump cover 20 and the rear end cover 30 are also respectively provided with connection holes with the hole core parallel to the direction of the pump shaft on the plate surface with small thickness; that is, connection holes are set on the front pump cover 20 and the rear end cover 30 where the second front pump cover table 23 and the second rear end cover table 34 are located, so as to realize the connection between the front pump cover 20 and the rear end cover 30 and the circumferential wall 10 respectively.

Claims

1. A split hose pump housing, characterized in that: The front and rear end openings of the circumferential wall (10) are detachably connected to a front pump cover (20) and a rear end cover (30), respectively. A sleeve-shaped bearing seat (31) is provided in the middle of the rear end cover (30).

2. The split hose pump housing according to claim 1, characterized in that: A front annular plate (11) and a rear annular plate (12) are respectively provided at the front and rear end openings of the circumferential wall (10), the plate surfaces of which are perpendicular to the pump shaft direction. Connecting holes for connecting the front pump cover (20) and the rear end cover (30) are correspondingly opened on the front annular plate (11) and the rear annular plate (12), and the hole cores of the connecting holes are parallel to the pump shaft direction.

3. The split hose pump housing according to claim 2, characterized in that: The periphery of the rear end cover (30) is in a step shape with a smaller outer thickness and a larger inner thickness in the radial direction. The step portion on the rear end cover (30) is inserted into the inner ring hole edge of the rear annular plate (12) to form a stop fit.

4. The split hose pump housing according to claim 2, characterized in that: The periphery of the front pump cover (20) is in a step shape with a smaller outer thickness and a larger inner thickness in the radial direction. The step portion on the front pump cover (20) is inserted into the inner hole edge of the front annular plate (11) to form a stop fit.

5. The split hose pump housing according to claim 3 or 4, characterized in that: The front pump cover (20) and the rear end cover (30) are also respectively provided with connection holes on the plate surfaces with small thickness, the hole cores of which are parallel to the direction of the pump shaft.

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