Impeller flowmeter

Abstract

The utility model relates to an impeller flow meter which comprises a meter core shell, a column handle connected with the meter core shell, an impeller connected to the bottom of the column handle through a bearing, an adjusting nut, a pressing sleeve, a connecting rod and a bearing sleeve, and the bottom of the column handle is provided with an impeller groove used for installing the impeller and a bearing long hole used for installing the bearing. The bearing sleeve comprises a lower half sleeve fixed in the bearing long hole and an upper half sleeve movably arranged in the bearing long hole, one end of the connecting rod is connected with the pressing sleeve, the other end of the connecting rod is connected with the upper half sleeve, the adjusting nut is in threaded connection with the stud of the stud handle, and the stud below the adjusting nut is sleeved with the pressing sleeve. When the impeller assembly is used, the upper half sleeve can be controlled to move up and down by rotating the adjusting nut, so that a bearing is easily pressed and loosened, the disassembly and assembly steps of an impeller are greatly simplified, the maintenance difficulty is reduced, and the maintenance time and cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meters, in particular to an impeller flow meter. Background Art

[0002] In the traditional impeller flowmeter design, the installation and removal of the impeller assembly often requires delicate operations and special tools, especially in the process involving bearing positioning and clamping. In the common impeller flowmeters on the market, the impeller has an impeller shaft at both ends, and bearings are fixed at both ends of the impeller shaft. The bearings are fixedly installed in the bearing holes of the flowmeter housing. The fixing method between the bearing and the impeller is mostly a one-time assembly, or although it has a certain adjustment function, the operation is complicated and inconvenient for daily maintenance and replacement. This not only increases the equipment maintenance cost, but also makes it difficult to quickly and effectively perform on-site repairs and replacements when encountering impeller wear, bearing damage, etc. under actual working conditions. Utility Model Content

[0003] In view of the deficiencies in the background technology, the utility model provides an impeller flowmeter.

[0004] The technical solution adopted by the utility model is: an impeller flowmeter, including a core shell, a column handle connected to the core shell and an impeller connected to the bottom of the column handle through a bearing, the bottom of the column handle is provided with an impeller groove for installing the impeller and a bearing long hole for installing the bearing, and also includes an adjusting nut, a pressing sleeve, a connecting rod and a bearing sleeve, the bearing sleeve includes a lower half sleeve fixed in the bearing long hole and an upper half sleeve movably arranged in the bearing long hole, one end of the connecting rod is connected to the pressing sleeve, and the other end is connected to the upper half sleeve, the adjusting nut is threadedly connected to the stud of the column handle, and the pressing sleeve is sleeved on the stud below the adjusting nut.

[0005] Furthermore, the stud is provided with limiting steps at the upper and lower ends.

[0006] Furthermore, a sliding hole for the connecting rod to pass through is provided on the column handle below the stud.

[0007] Furthermore, it also includes a positioning bolt, and the adjusting nut and the pressing sleeve are provided with a plurality of screw holes at equal intervals for threaded connection with the positioning bolt.

[0008] Furthermore, a plurality of raised positioning bosses are provided at intervals on the outer wall of the bearing, and positioning grooves which are engaged with the positioning bosses are provided on the inner walls of the lower half sleeve and the upper half sleeve.

[0009] The beneficial effect of the utility model is that when the present application is used, the up and down movement of the upper sleeve can be controlled by rotating the adjusting nut, thereby easily achieving the tightening and loosening of the bearing, greatly simplifying the disassembly and assembly steps of the impeller, reducing the difficulty of maintenance, and saving maintenance time and cost.

[0010] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0011] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0014] Figure 3 It is a schematic diagram of the structure of the adjusting nut, the pressing sleeve and the positioning bolt.

[0015] Figure 4 Schematic diagram of the bearing structure.

[0016] Figure 1-4 In: 1. Movement housing; 2. Column handle; 3. Bearing; 4. Impeller groove; 5. Long bearing hole; 6. Adjusting nut; 7. Press sleeve; 8. Connecting rod; 9. Bearing sleeve; 10. Lower sleeve; 11. Upper sleeve; 12. Stud; 13. Limiting step; 14. Sliding hole; 15. Positioning bolt; 16. Screw hole; 17. Positioning boss; 18. Positioning groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] The utility model provides an impeller flowmeter.

[0020] In this embodiment, refer to Figure 1-4The impeller flowmeter comprises a core housing, a column handle 2 connected to the core housing 1, and an impeller connected to the bottom of the column handle through a bearing 3 (the impeller is an existing ordinary impeller, which is hidden in the figure for the sake of clarity and simplicity of the view). The bottom of the column handle is provided with an impeller groove 4 for installing the impeller and a bearing long hole 5 for installing the bearing. It also comprises an adjusting nut 6, a pressing sleeve 7, a connecting rod 8 and a bearing sleeve 9. The bearing sleeve 9 comprises a lower half sleeve 10 fixed in the bearing long hole and an upper half sleeve 11 movably arranged in the bearing long hole. One end of the connecting rod is connected to the pressing sleeve, and the other end is connected to the upper half sleeve. The adjusting nut is threadedly connected to the stud of the column handle, and the pressing sleeve is sleeved on the stud 12 below the adjusting nut.

[0021] After adopting the above technical solution, the up and down movement of the upper sleeve can be controlled by rotating the adjusting nut, thereby easily achieving the tightening and loosening of the bearing, which greatly simplifies the disassembly and assembly steps of the impeller, reduces the difficulty of maintenance, and saves maintenance time and cost.

[0022] The specific principle is: by rotating the adjusting nut, the pressing sleeve, the connecting rod connected to the pressing sleeve, and the upper half sleeve connected to the connecting rod can be driven to move up and down, thereby tightening or loosening the bearing installed in the bearing sleeve.

[0023] Specifically, the upper and lower ends of the stud are provided with limiting steps 13.

[0024] In this embodiment, limit steps are added on the upper and lower sides of the stud of the column handle to limit the travel range of the adjustment nut and the pressing sleeve to ensure that the components are not damaged or fail due to excessive tightening during the adjustment process.

[0025] Specifically, a sliding hole 14 for the connecting rod to pass through is provided on the column handle below the stud.

[0026] In this embodiment, a sliding hole for the connecting rod to pass through is provided on the column handle below the stud, so that the connecting rod can move smoothly in the column handle, cooperate with the action of the adjusting nut, and accurately transmit pressure to the upper half of the bearing sleeve. As shown in the figure, the sliding hole is located on the column handle below the stud, and is aligned with the axial direction of the bearing sleeve to facilitate the connecting rod to pass through.

[0027] Specifically, it also includes a positioning bolt 15, and a plurality of screw holes 16 for threaded connection with the positioning bolt are evenly spaced on the adjusting nut and the pressing sleeve.

[0028] In this embodiment, a positioning bolt is introduced, and it is pointed out that both the adjusting nut and the pressing sleeve have screw holes that match them, so that after adjustment, they can be locked in a preset position by using the positioning bolt to ensure the long-term stability of the clamping state.

[0029] Specifically, a plurality of raised positioning bosses 17 are provided at intervals on the outer wall of the bearing, and positioning grooves 18 which are engaged with the positioning bosses are provided on the inner walls of the lower half sleeve and the upper half sleeve.

[0030] In this embodiment, the matching design of the positioning boss and the positioning groove improves the stability of the bearing when it is pressed, ensuring that the impeller rotates smoothly without shaking, thereby improving the accuracy and repeatability of the flow meter measurement and reducing the wear rate of the bearing under high-speed operation.

[0031] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. An impeller flowmeter, comprising a core housing, a column handle connected to the core housing, and an impeller connected to the bottom of the column handle through a bearing, wherein the bottom of the column handle is provided with an impeller groove for mounting the impeller and a bearing slot for mounting the bearing, characterized in that: It also includes an adjusting nut, a pressing sleeve, a connecting rod and a bearing sleeve. The bearing sleeve includes a lower half sleeve fixed in the long hole of the bearing and an upper half sleeve movably arranged in the long hole of the bearing. One end of the connecting rod is connected to the pressing sleeve, and the other end is connected to the upper half sleeve. The adjusting nut is threadedly connected to the stud of the column handle, and the pressing sleeve is sleeved on the stud below the adjusting nut.

2. The impeller flowmeter according to claim 1, characterized in that: The upper and lower ends of the stud are provided with limiting steps.

3. The impeller flowmeter according to claim 1, characterized in that: A sliding hole for the connecting rod to pass through is provided on the column handle below the stud.

4. The impeller flowmeter according to any one of claims 1 to 3, characterized in that: It also includes a positioning bolt, and the adjusting nut and the pressing sleeve are provided with a plurality of screw holes at equal intervals for threaded connection with the positioning bolt.

5. The impeller flowmeter according to claim 1, characterized in that: A plurality of raised positioning bosses are arranged at intervals on the outer wall of the bearing, and positioning grooves which are engaged with the positioning bosses are arranged on the inner walls of the lower half sleeve and the upper half sleeve.

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