Sealed water meter impeller box

Abstract

The utility model relates to the technical field of flow measuring equipment, and discloses a sealed water meter impeller box which comprises a meter shell and an impeller box body, the impeller box body is inserted into the inner side of the meter shell, a sealing groove is formed in the outer side of the impeller box body, an O-shaped ring is installed in the sealing groove in the radial direction, and a water filter screen is installed at the bottom of the impeller box body. A water inlet cavity and a water outlet cavity are formed between the impeller box body and the meter shell and located on the upper side and the lower side of the O-shaped ring. According to the sealed water meter impeller box, the O-shaped ring is located between the meter shell and the impeller box body, so that the impeller box body and the meter shell are connected more tightly, the water inlet cavity and the water outlet cavity are completely isolated and sealed, the water flow detected by the water meter is more accurate, meanwhile, the water filter screen is additionally arranged on the impeller box body, and the water meter is more compact in structure and convenient to use. The meter shell is more convenient to produce and assemble, and the processing cost of the water meter is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of flow measurement equipment, and in particular to a sealed water meter impeller box. Background Art

[0002] A water meter is a common water flow meter. Its working principle is that when water enters the impeller box from the water meter case and impacts the impeller, the impeller generates a driving torque. When the driving torque of the impeller is greater than the resistance torque of the impeller, the impeller starts to rotate. When the flow rate is constant, the driving torque and the resistance torque are balanced, and the impeller keeps rotating at a constant speed. The flow rate and cumulative flow rate of the water fluid in the pipeline are measured by sensing the rotation speed of the impeller in the water flow. Most of the existing water meter impeller boxes are sealed with a case, which results in a complex case structure, high processing difficulty and product processing cost, and low production efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present application provides a sealed water meter impeller box, which has the advantages of easy assembly and tight connection, and solves the problem of inconvenient processing of the meter case.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a sealed water meter impeller box, comprising a meter case and an impeller box body, the impeller box body being inserted into the inner side of the meter case, a sealing groove being provided on the outer side of the impeller box body, an O-ring being radially installed inside the sealing groove, and a water filter being installed at the bottom of the impeller box body.

[0005] The O-ring is located between the case and the impeller box body, making the impeller box body and the case more tightly connected, so that the water inlet chamber and the water outlet chamber are completely isolated and sealed, making the water flow detected by the water meter more accurate.

[0006] Preferably, a water inlet chamber and a water outlet chamber are formed between the impeller box body and the casing, and the water inlet chamber and the water outlet chamber are located at the upper and lower sides of the O-ring.

[0007] The water inlet chamber and the water outlet chamber are completely separated, making the water flow detected by the water meter more accurate.

[0008] Preferably, the outer side of the O-ring fits tightly against the inner side of the watch case.

[0009] In summary, the beneficial effects of this application are:

[0010] The sealed water meter impeller box, when the impeller box body is installed inside the meter case, the O-ring is located between the meter case and the impeller box body, so that the impeller box body and the meter case are connected more tightly, so that the water inlet chamber and the water outlet chamber are completely isolated and sealed, so that the water flow detected by the water meter is more accurate, and at the same time, a water filter net is added to the impeller box body, so that the water meter structure is more compact, the production and assembly of the meter case is more convenient, and the processing cost of the water meter is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the internal structure diagram of the case for this application.

[0012] Among them: 1. Case; 2. O-ring; 3. Impeller box body; 4. Water inlet chamber; 5. Water outlet chamber. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0014] See also Figure 1 A sealed water meter impeller box comprises a case 1 and an impeller box body 3, the impeller box body 3 is plugged into the inner side of the case 1, a sealing groove is provided on the outer side of the impeller box body 3, an O-ring 2 is radially installed inside the sealing groove, the outer side of the O-ring 2 is tightly fitted with the inner side of the case 1, a water filter net is installed at the bottom of the impeller box body 3, a water inlet chamber 4 and a water outlet chamber 5 are formed between the impeller box body 3 and the case 1, and the water inlet chamber 4 and the water outlet chamber 5 are located on the upper and lower sides of the O-ring 2.

[0015] Through the above technical solution, when the water meter is assembled, the staff puts the O-ring 2 into the sealing groove on the outside of the impeller box body 3, and the impeller box body 3 is directly inserted into the inside of the case 1, so that the case 1 and the impeller box body 3 are tightly connected, and the water inlet chamber 4 and the water outlet chamber 5 are formed between the impeller box body 3 and the case 1. The O-ring 2 completely separates the water inlet chamber 4 and the water outlet chamber 5, so that the water flow detected by the water meter is more accurate. At the same time, a water filter net is added to the impeller box body 3 to make the water meter structure more compact, so that the production and assembly of the case 1 is more convenient, the processing rate of the water meter is improved, and the processing cost of the water meter is reduced.

[0016] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sealed water meter impeller box, comprising a meter housing (1) and an impeller box body (3), characterized in that: The impeller box body (3) is plugged into the inner side of the watch case (1); a sealing groove is provided on the outer side of the impeller box body (3); an O-ring (2) is radially installed inside the sealing groove; a water filter net is installed at the bottom of the impeller box body (3); a water inlet chamber (4) and a water outlet chamber (5) are formed between the impeller box body (3) and the watch case (1); the water inlet chamber (4) and the water outlet chamber (5) are located on the upper and lower sides of the O-ring (2); and the outer side of the O-ring (2) is tightly fitted with the inner side of the watch case (1).

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