CN213579515U - Water meter valve core with axial floating impeller - Google Patents

Abstract

The utility model discloses a water gauge case with axial impeller that floats, including the core frame, core lid and rotatable dabber, the core frame is equipped with first fixed orifices, the core lid is equipped with the second fixed orifices, the both ends of dabber respectively with first fixed orifices, the second fixed orifices cup joints, and the both ends face of dabber all with first fixed orifices, there is axial clearance at the second fixed orifices interval, the dabber is equipped with worm and impeller, the core frame is equipped with rotatable connecting rod and driven gear, driven gear is equipped with magnet, the connecting rod lower extreme is equipped with the worm wheel with worm meshing, the connecting rod upper end is equipped with the driving gear with driven gear meshing. The utility model discloses compact structure, the commonality is strong, and the wearing and tearing volume of dabber is little, longe-lived.

Description

Water meter valve core with axial floating impeller

Technical Field

The utility model belongs to the technical field of at the water gauge accessory and specifically relates to a water gauge case with axial impeller that floats is related to.

Background

The water meter is a meter for measuring water flow, mostly for measuring accumulated flow of water, and generally includes two types, namely a positive displacement water meter and a velocity water meter. When selecting the specification of the water meter, the size and the flow range of the flow used in the normal condition are firstly estimated, and then the water meter with the specification of which the common flow is closest to the value is selected as a first choice.

The water meter is internally provided with a valve core, the valve core is provided with an impeller and an impeller shaft, two end faces of the general impeller shaft are contacted with the end face of a supporting hole of the valve core, and the two end faces of the impeller shaft are abraded in long-term work, so that the water flow metering precision is influenced, the service life of the water meter is shortened, and improvement is needed.

Disclosure of Invention

The utility model aims to solve the technical problem that a water gauge case with axial floating impeller is provided, the both ends of dabber all have axial clearance with first fixed orifices, second fixed orifices interval to make the impeller have the axial space of floating, reduced the wearing and tearing of dabber terminal surface.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a water meter valve core with an axial floating impeller comprises a core frame, a core cover and a rotatable core shaft, wherein the core frame is provided with a first fixing hole, the core cover is provided with a second fixing hole, two end faces of the core shaft are respectively sleeved with the first fixing hole and the second fixing hole, axial moving gaps are formed in the two ends of the core shaft and are spaced from the first fixing hole and the second fixing hole, the core shaft is provided with a worm and an impeller, the core frame is provided with a rotatable connecting rod and a driven gear, the driven gear is provided with a magnet, the lower end of the connecting rod is provided with a worm wheel meshed with the worm, and the upper end of the connecting rod is provided with a driving gear meshed with the driven gear.

As the utility model discloses further improve: the core frame is provided with an overflow hole, an adjusting plate capable of blocking the overflow hole is arranged in the overflow hole, and the adjusting plate is provided with an adjusting rod in threaded connection with the adjusting plate.

As the utility model discloses further improve: the core frame is provided with a sliding groove penetrating through the overflow hole, the adjusting plate is movably arranged in the sliding groove, the sliding groove is provided with a rotating hole, and the adjusting rod is movably arranged in the rotating hole.

As the utility model discloses further improve: the adjusting plate is provided with a threaded hole, and the adjusting rod is provided with a knob and a screw rod connected with the threaded hole.

As the utility model discloses further improve: the first fixing hole and the second fixing hole are provided with bushings, and wear-resistant pads are arranged in the bushings.

As the utility model discloses further improve: two ends of the mandrel are respectively sleeved in the two bushings, and an axial movable gap is formed between the end surface of the mandrel and the wear-resistant pad.

As the utility model discloses further improve: the core cover is provided with an inner water inlet and an outer water inlet, and the core frame is provided with a water outlet.

The utility model has the advantages of compact structure, the commonality is strong, and the wearing and tearing volume of dabber is little, longe-lived.

The utility model can be applied to water meters with different sizes and styles; core frame and core lid fixed sealing connection, rivers are from core lid flow direction impeller, so rivers drive impeller, worm rotation, and the worm drives worm wheel, connecting rod, driving gear, driven gear, magnet rotation in proper order, the utility model discloses after installing the water gauge, thereby the numerical value of discharge can be measured in the rotation of the water gauge counter in the rotatory magnet can attract the water gauge counter in the water gauge. Dabber and impeller, worm fixed connection, the three synchronous revolution, the both ends of dabber all have axial clearance with first fixed orifices, second fixed orifices interval, so the impeller has the axial space of floating, the dabber terminal surface not always with first fixed orifices, second fixed orifices contact friction, reduced the wearing and tearing of dabber terminal surface, make the utility model discloses still keep higher rivers measurement accuracy after using for a long time.

Drawings

Fig. 1 is an exploded view of a first perspective of the present invention;

fig. 2 is an exploded view of a second perspective of the present invention;

FIG. 3 is a schematic sectional view in a front view direction of the present invention;

fig. 4 is a schematic sectional view of the side view direction of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1-4: water meter valve core with axial floating impeller, including core frame 100, core lid 200 and rotatable dabber 8, core frame 100 is equipped with first fixed orifices 105, core lid 200 is equipped with second fixed orifices 201, the both ends of dabber 8 cup joint with first fixed orifices 105, second fixed orifices 201 respectively, and the both ends face of dabber 8 all with first fixed orifices 105, there is axial clearance 83 at second fixed orifices 201 interval, dabber 8 is equipped with worm 82 and impeller 81, core frame 100 is equipped with rotatable connecting rod 5 and driven gear 4, driven gear 4 is equipped with magnet 3, the lower extreme of connecting rod 5 is equipped with worm wheel 52 with worm 82 meshing, connecting rod 5 upper end is equipped with driving gear 51 with driven gear 4 meshing.

The core frame 100 is provided with an overflow hole 103, an adjusting plate 2 capable of blocking the overflow hole 103 is arranged in the overflow hole 103, and the adjusting plate 2 is provided with an adjusting rod 1 in threaded connection with the adjusting plate 2. The water flow metering principle is as follows: the water flow drives the impeller and the worm to rotate, the worm drives the worm wheel, the driving gear, the driven gear and the magnet to rotate in sequence, and the magnet can attract the water meter counter to rotate so as to measure the value of the water flow. Wherein a part of water flows to the impeller from the core cover and then goes out of the core frame; a part of water flows in from one end of the overflow hole, and flows out from the other end of the overflow hole, and the overflow hole has the function of shunting; every water gauge all will debug before dispatching from the factory, the regulating plate reciprocates and can control the cross section size in overflow hole, just also mean the overflow hole reposition of redundant personnel back, the table needle measurement rotational speed of water gauge counter just also changes correspondingly, just then just can adjust the flow accuracy of water gauge counter through adjusting the pole, regulating plate (its principle is that there is measuring container in the laboratory to survey actual rivers total amount, then compares with the table needle flow of water gauge counter, if both numerical values have the deviation, just can use the regulating plate to finely tune). In addition, after the overflow holes are divided, the impact force of water flow on the impeller is correspondingly reduced, so that the axial thrust of the water flow on the mandrel is also reduced, and the abrasion loss of the end surface of the mandrel in rotation is also reduced.

The core frame 100 is provided with a sliding groove 102 penetrating through an overflow hole 103, the adjusting plate 2 is movably arranged in the sliding groove 102, the sliding groove 102 is provided with a rotating hole 101, and the adjusting rod 1 is movably arranged in the rotating hole 101.

The adjusting plate 2 is provided with a threaded hole 21, and the adjusting rod 1 is provided with a knob 11 and a screw 12 connected with the threaded hole 21. The screw rod of the adjusting rod can drive the adjusting plate to move upwards or downwards when rotating, and the knob can be rotated and adjusted by tools such as a screwdriver and the like.

The first fixing hole 105 and the second fixing hole 201 are both provided with a bushing 6, and a wear pad 7 is arranged in the bushing 6. The wear pad and the bush can be replaced when problems are found in the water meter debugging link, and can be replaced after long-term working wear.

Two ends of the mandrel 8 are respectively sleeved in the two bushings 6, and an axial movable gap 83 is formed between the end surface of the mandrel 8 and the wear-resistant pad 7 at an interval. The two ends of the mandrel can rotate around the inner hole of the bush; when rivers impact impeller, the impeller begins to rotate, because there is axial clearance between dabber tip and the wear pad interval, so the impeller can axial displacement, and then dabber terminal surface can not take place the friction with the wear pad all the time, can reduce friction loss like this.

The core cover 200 is provided with an inner water inlet 203 and an outer water inlet 202, and the core frame 100 is provided with a water outlet 104. Water enters the utility model from the inner water inlet and the outer water inlet, the water pressure is stable, and then the water flows out from the water outlet; if only an outer water inlet, then the impeller is by rivers impact the wear pad that the core frame department was withstood easily to the core shaft tip, make core shaft tip wearing and tearing, the core lid has set up interior water inlet, in addition the impeller has set up the perforating hole that corresponds with interior water inlet position, the rivers of interior water inlet strike the core frame behind the perforating hole, then this part rivers kick-back striking impeller, this moment this thigh rivers of kick-back also promote the impeller, just in the opposite direction with the rivers of outer water inlet to the thrust of impeller, the impeller receives behind the effort of these two strands of rivers, the position keeps balance, core shaft tip does not have the contact with the wear pad this moment, and be in the spaced state, so reduced the wearing and tearing volume of core shaft tip and wear pad, make the water gauge with the utility model discloses the life-.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. A water meter valve core with an axial floating impeller comprises a core frame, a core cover and a rotatable core shaft and is characterized in that the core frame is provided with a first fixing hole, the core cover is provided with a second fixing hole, two ends of the core shaft are respectively sleeved with the first fixing hole and the second fixing hole, axial moving gaps are formed between two end faces of the core shaft and the first fixing hole and between the two end faces of the core shaft and the second fixing hole, the core shaft is provided with a worm and an impeller, the core frame is provided with a rotatable connecting rod and a driven gear, the driven gear is provided with a magnet, the lower end of the connecting rod is provided with a worm wheel meshed with the worm, and the upper end of the connecting rod is provided with a driving gear meshed with the driven gear.

2. A water meter valve cartridge having an axially floating impeller as claimed in claim 1, wherein said cartridge frame has an overflow aperture, said overflow aperture having an adjustment plate disposed therein for blocking said overflow aperture, said adjustment plate having an adjustment stem threadably engaged with said adjustment plate.

3. A water meter valve cartridge having an axially floating impeller as claimed in claim 2, wherein said cartridge frame has a slot extending through said overflow aperture, said adjustment plate is movably disposed within said slot, said slot has a pivot aperture, and said adjustment lever is movably disposed within said pivot aperture.

4. A water meter cartridge having an axially floating impeller as set forth in claim 3, wherein said adjustment plate has a threaded opening, and said adjustment stem has a knob and a threaded rod connected to said threaded opening.

5. A water meter valve cartridge with an axially floating impeller as claimed in claim 1, wherein said first and second mounting openings each receive a bushing, and said bushings receive a wear pad therein.

6. A water meter valve cartridge with an axially floating impeller as claimed in claim 5, wherein said spindle is sleeved at each of its ends in two bushings, and said spindle has an end surface spaced from said wear pad by an axially moving gap.

7. A water meter cartridge having an axially floating impeller as set forth in claim 6, wherein said cartridge cover defines an inner inlet opening and an outer inlet opening, and said cartridge frame defines an outlet opening.

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