Hose pump housing

Abstract

The utility model discloses a hose pump shell and relates to the technical field of hose pumps, a front annular plate and a rear annular plate are arranged at the two ends of a circumferential enclosure bulkhead in the axial direction respectively, and the circumferential enclosure bulkhead, the front annular plate and the rear annular plate define a groove cavity for containing a hose, the device is characterized in that a hard rubber strip rod is arranged on the inner side plate face of the front annular plate and / or the rear annular plate, and the extending direction of the rubber strip rod is consistent with the extending direction of the arc-shaped section of the groove cavity; and the hose is prevented from deviating in the axial direction of the roller.

Description

Technical Field

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

[0002] The utility model patent named "Hose Pump" (document number CN206555107U) discloses a hose pump housing comprising a circumferential wall and a rear end cover, a sleeve-shaped bearing seat in the middle of the rear end cover, and a main shaft comprising a main shaft and a rotor fixedly connected;

[0003] like Figure 1 As shown, the above-mentioned hose pump housing has the following defects: when the above-mentioned hose pump rotor is installed on the above-mentioned hose pump housing, in order to ensure that the hose is still located in the area surrounded by the circumferential wall 100 when squeezed by the roller, the length of the circumferential wall 100 in the pump shaft direction is greater than the diameter of the hose. Since the rear end cover protrudes to the outside of the pump chamber, the rear end of the roller support arm will not interfere with the rear end cover. When the hose is installed, one side of the hose is close to the rear end side wall 110 of the circumferential wall 100, so that there is a distance between the hose and the front end side of the circumferential wall 100. When the roller is squeezing the hose, the hose is easily offset in the pump shaft direction, resulting in the roller being unable to fully squeeze the hose, and the medium pumped out of the hose outlet is also reduced. Utility Model Content

[0004] The utility model aims to provide a hose pump housing to prevent the hose from being offset in the axial direction of the roller.

[0005] The utility model can be implemented through the following technical solutions: a hose pump housing, a front annular plate and a rear annular plate are respectively provided at both ends of the axial direction of the circumferential wall, the circumferential wall, the front annular plate and the rear annular plate are arranged to form a groove cavity for accommodating the hose, and the extension direction of the groove cavity is U-shaped, which is characterized in that: a hard rubber strip is provided on the inner plate surface of the front annular plate and / or the rear annular plate, and the extension direction of the rubber strip is consistent with the extension direction of the arc section of the groove cavity.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] The setting of the rubber baffle, on the one hand, allows the rubber bar to contact the front and rear sides of the hose when the hose is squeezed by the roller, thereby limiting the hose and preventing the hose from moving in the direction of the pump shaft after being squeezed by the roller. On the other hand, it also reduces the area of ​​the fine-machining surface of the inner wall of the circumferential wall, which is beneficial to reducing the processing time of the pump casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure inside the pump casing in the prior art;

[0009] Figure 2This is a schematic diagram of the external structural connection of the hose pump in the utility model;

[0010] Figure 3 、 Figure 4 、 Figure 5 Schematic diagram of three installation methods of the rubber strip in the present invention;

[0011] Figure 6 This is a schematic diagram of the internal structure of the pump casing in the utility model;

[0012] Figure 7 It is a structural diagram of the rubber strip in the utility model. DETAILED DESCRIPTION

[0013] Example 1

[0014] See also Figure 2 、 3 , 4, 6, and 7 show a hose pump housing, wherein a front annular plate 20 and a rear annular plate 30 are respectively provided at both ends of the axial direction of the circumferential wall 10, and the circumferential wall 10, the front annular plate 20, and the rear annular plate 30 are arranged to form a U-shaped groove cavity 1 for accommodating the hose 50, and a hard rubber strip 40 is provided on the inner plate surface of the front annular plate 20 and / or the rear annular plate 30, and the extension direction of the rubber strip 40 is consistent with the extension direction of the arc segment of the groove cavity 1;

[0015] In this application, the rear annular plate 30 is part of the rear end cover, and the front annular plate 20 is part of the front pump cover; Figure 2 As shown, if the rear end cover is integrally protruding toward the outside of the pump chamber, while ensuring that the hose 50 can be normally rolled by the roller, rubber strips 40 can be provided on both the inner surface of the front annular plate 20 and the inner surface of the rear annular plate 30, or only on the inner surface of the front annular plate 20. The provision of the rubber strips 40, on the one hand, allows the hose 50 to be pressed by the roller, and the rubber strips 40 to abut against the front and rear sides of the hose 50, thereby limiting the position of the hose 50 and preventing the hose 50 from moving in the direction of the pump shaft after being squeezed by the roller. On the other hand, it also reduces the area of ​​the fine-machined surface of the inner wall of the circumferential wall 10, which is beneficial to reducing the processing time of the pump housing. In the above-mentioned case, the inner wall surface of the rear annular plate 30 does not need to be fine-machined, which reduces the processing difficulty of the pump housing and further reduces the processing time of the pump housing. The hard rubber strips 40 can also reduce the wear on the hose 50 and at the same time play a role in constraining the hose 50 to be of appropriate hardness.

[0016] When the hose 50 is squeezed by the roller, the rubber strips 40 come into contact with the front and rear sides of the hose 50; the front and rear sides of the hose 50 are limited by the rubber strips 40, so that the hose 50 remains in the groove 1 after being deformed by rolling, and the distance between the rubber strips 40 on the front and rear sides of the hose 50 is equal to or slightly less than the axial length of the roller, so that the hose can be completely squeezed by the roller, thereby ensuring the squeezing effect of the roller on the hose and improving the stability of the hose pump when pumping the medium.

[0017] like Figure 6 As shown, the rubber strip 40 is semicircular and arranged within the length of the large arc section 11 on the circumferential wall 10; the hose is arranged in a U shape in the pump housing, and the roller squeezes the hose at the position where the large arc section 11 is located. Therefore, the hose at the position of the large arc section 11 is most likely to deviate, so the rubber strip 40 is arranged on the inner wall of the large arc section 11.

[0018] The rubber strip 40 is connected to the front annular plate 20 and the rear annular plate 30 respectively by fastening bolts 60; specifically, the connection between the rubber strip 40 and the front annular plate 20 or the rear annular plate 30 can be as follows:

[0019] like Figure 3 As shown, one embodiment is: the fastening bolt 60 and the rubber strip 40 are integrally vulcanized and molded; when installing the rubber strip 40, the screw on the fastening bolt 60 is passed through the connecting hole on the front annular plate 20 or the rear annular plate 30, and then a nut is screwed into the end of the screw, so that the rubber strip 40 is fixed together with the front annular plate 20 or the rear annular plate 30.

[0020] like Figure 4 As shown, another embodiment is as follows: the rubber strip 40 is provided with a bolt hole 45 that passes through the rod body of the rubber strip 40, the bolt hole 45 is parallel to the axial direction of the hose pump, and the hole end of the bolt hole 45 facing the groove width is a countersunk hole for accommodating the nail head of the fastening bolt 60, and the rubber strip 40 is connected to the front annular plate 20 and / or the rear annular plate 30 by the fastening bolt 60; when installing the rubber strip 40, the fastening bolt 60 is sequentially passed through the threaded hole 45 of the rubber strip and the connecting hole on the front annular plate 20, and the free end of the screw of the fastening bolt 60 is tightened with a nut, so that the rubber strip 40 is fixed to the front annular plate 20 or the rear annular plate 30; at this time, the head of the fastening bolt 60 is located in the countersunk hole. In order to prevent the head of the fastening bolt 60 from causing wear on the hose 50, a rubber layer can be provided on the head of the fastening bolt 60.

[0021] In the above two connection methods, the connection holes pre-opened on the front annular plate 20 and the rear annular plate 30 are both clear holes.

[0022] like Figure 7As shown, the edge of the rubber strip 40 close to the hose 50 is a rounded transition; the cross-sectional profile of the rubber strip 40 includes a bottom surface 41 that is in contact with the circumferential wall 10, an outer surface 42 that is in contact with the front annular plate 20, an inner surface 43 that is arranged at intervals and is parallel to the outer surface 42, and a top surface 44 that is arranged at intervals and is parallel to the bottom surface 42, and the inner surface 43 and the top surface 44 have a smooth transition and extension; by providing an arc surface at the connection between the inner surface 43 and the top surface 44, it has the function of guiding the hose 50 into the groove cavity 1. When the hose 50 is squeezed and deformed by the roller, the tube surface on one side of the hose 50 will slide downward along the arc surface, so that the hose 50 enters the groove cavity 1.

[0023] Example 2

[0024] See also Figure 5 As shown, a hose pump housing is different from the embodiment 1 in that the rubber strips 40 are connected to the circumferential wall 10 by fastening bolts 60;

[0025] Preferably, the rubber strip 40 is provided with a bolt hole 46 that passes through the rod body of the rubber strip 40, and the bolt hole 46 is perpendicular to the axial direction of the hose pump, and the rubber strip 40 is connected to the circumferential surrounding wall 10 by a fastening bolt 60 inserted into the bolt hole 46; when installing the rubber strip 40, the bottom surface 41 of the rubber strip 40 is aligned with the inner wall of the large arc segment 11 on the circumferential surrounding wall 10, and the screw of the fastening bolt 60 is screwed into the bolt hole 46 on the rubber strip 40 and the connecting hole on the large arc segment 11 in turn to complete the fixation between the rubber strip 40 and the circumferential surrounding wall 10; it should be noted that this connection method can be a connecting hole with an internal thread on the circumferential surrounding wall 10, or a light hole that passes through the wall body of the circumferential surrounding wall 10 on the circumferential surrounding wall 10. When the screw of the fastening bolt 60 passes through the light hole, the connection is implemented by a nut.

[0026] In addition, in this embodiment, a structure in which the fastening bolt 60 and the rubber strip 40 are integrally vulcanized and molded can also be adopted. In this case, the fastening bolt 60 is perpendicular to the pump shaft direction of the hose pump, and the head of the fastening bolt 60 is pressed on the top surface 44 of the rubber strip 40; when installing the rubber strip 40, the screw on the fastening bolt 60 is passed through the connecting hole on the circumferential wall 10, and then a nut is screwed into the end of the screw to fix the rubber strip 40 and the circumferential wall 10 together.

Claims

1. A hose pump housing, wherein a front annular plate (20) and a rear annular plate (30) are respectively provided at both ends of a circumferential wall (10) in the axial direction, and the circumferential wall (10), the front annular plate (20), and the rear annular plate (30) are arranged to form a groove cavity (1) for accommodating a hose (50) in a U-shaped extending direction, characterized in that: A hard rubber strip (40) is provided on the inner plate surface of the front annular plate (20) and / or the rear annular plate (30), and the extension direction of the rubber strip (40) is consistent with the extension direction of the arc section of the groove cavity (1).

2. The hose pump housing according to claim 1, characterized in that: When the hose (50) is squeezed by the roller, the rubber bar (40) abuts against the front and rear sides of the hose (50).

3. The hose pump housing according to claim 1 or 2, characterized in that: The rubber strip (40) is in a semicircular arc shape and is arranged within the length range of the large arc segment (11) on the circumferential wall (10).

4. The hose pump housing according to claim 1, characterized in that: The rubber strip (40) is respectively connected to the front annular plate (20) and the rear annular plate (30) via fastening bolts (60).

5. The hose pump housing according to claim 4, characterized in that: The fastening bolt (60) and the rubber strip (40) are integrally vulcanized and formed.

6. The hose pump housing according to claim 4, characterized in that: The rubber strip (40) is provided with a bolt hole (45) penetrating the rod body of the rubber strip (40), the bolt hole (45) is parallel to the axial direction of the hose pump, the hole end of the bolt hole (45) facing the groove width direction is a countersunk hole for accommodating the bolt head of the fastening bolt (60), and the rubber strip (40) is connected to the front annular plate (20) and / or the rear annular plate (30) by the fastening bolt (60).

7. The hose pump housing according to claim 1, characterized in that: The rubber strips (40) are respectively connected to the circumferential walls (10) via fastening bolts (60).

8. The hose pump housing according to claim 7, characterized in that: The rubber strip (40) is provided with a bolt hole (46) penetrating the rod body of the rubber strip (40), the bolt hole (46) being perpendicular to the axial direction of the hose pump, and the rubber strip (40) and the circumferential wall (10) are connected via a fastening bolt (60) passing through the bolt hole (46).

9. The hose pump housing according to claim 1, characterized in that: The edge of the rubber strip (40) close to the hose (50) is a rounded transition.

10. The hose pump housing according to claim 9, characterized in that: The cross-sectional profile of the rubber strip (40) includes a bottom surface (41) in contact with the circumferential wall (10), an outer surface (42) in contact with the front annular plate (20), an inner surface (43) arranged at intervals and parallel to the outer surface (42), a top surface (44) arranged at intervals and parallel to the bottom surface (41), and the inner surface (43) and the top surface (44) transition smoothly and sequentially.

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