Regulating device of constant-temperature valve element

Abstract

The invention provides a regulating device of a constant-temperature valve element, and belongs to the field of bathroom valve elements. The regulating device comprises a regulating rod and a mountingbase used for bearing the regulating rod, and further comprises a positioning ring post, wherein a regulating rod mounting cavity is arranged in the mounting base; a positioning ring bulge which is bulged outwards is arranged on the middle part of the regulating rod; a limiting platform is arranged in the regulating rod mounting cavity; the regulating rod is inserted into the regulating rod mounting cavity from above the mounting base; the positioning ring bulge is bulged on the upper end surface of the limiting platform; and the positioning ring post is used for limiting and mounting the regulating rod on the mounting base. The regulating device of the constant-temperature valve element provided by the invention can replace a corresponding structure on a conventional constant-temperaturevalve element, does not need a blocking spring for fastening the regulating rod, and mounts the regulating rod from top to bottom, so that processing and detecting difficulties of the regulating rodand the corresponding mounting base are reduced; and meanwhile, a mounting and replacing process of the regulating rod is convenient, so that integral assembly efficiency and product quality stabilityare improved, and therefore, reliable basis is provided for follow-up assembling and using of the constant-temperature valve element.

Description

technical field [0001] The invention relates to a valve core for bathroom, in particular to an adjusting device for a thermostatic valve core. Background technique [0002] As a general accessory in the faucet industry, the thermostatic valve core is a device that automatically adjusts the mixing ratio of hot and cold water to keep the temperature of the mixed water at the set temperature. It mainly includes a valve body, an adjusting rod, a follower sleeve, and a thermal sensor. And cold and hot water inlet control components, rotating the adjustment handle on the adjustment rod causes the follower to move up and down, and limits the thermal element to different positions, thereby realizing the constant temperature water outlet effect at the set temperature. [0003] In the prior art, the adjusting rod is fixed on the valve body through a snap ring. For example, a Chinese patent discloses a thermostatic spool structure (application number CN201620676931.8) and a thermostat...

AI Technical Summary

Problems solved by technology

However, when measuring the distance H1 between the upper end surface of the positioning ring protrusion (13') of the adjusting rod (1') and the lower end surface of the circlip groove (15'), the measuring part on the main ruler can be aligned with the positioning ring protrusion. (13') the upper end surface is affixed, but the lower end surface of the circlip groove (15') has almost no space for the measuring parts on the vernier to be affixed. The measurement of H1 is very inconvenient, and H1 cannot be directly measured once. The subtraction of the end surface measurement will lead to a large error in the measurement data, which will affect the processing of the adjustment rod (1'), especially it is difficult to control the processing height of the lower end surface of the circlip groove (15'), and it is difficult to control the adjustment rod (1') product quality

[0008] 2. During the processing of the mounting seat (2'), because the inner diameters of the upper mounting cavity (31') and the lower mounting cavity (32') are different, the upper and lower secondary processing is required, and the manufacturing process itself has certain deviations. Secondary processing will bring greater dimensional error. The distance H2 between the limit step (33') in the mounting seat (2') and the upper end surface of the mounting seat (2') is not easy to control during processing. The mounting seat The actual processing of (2') is difficult; in addition, when measuring H2, the limit step (33') is on the back of the upper installation cavity (31'), the main ruler of the caliper and the measuring parts on the vernier The limit step (33') and the upper end surface of the mounting seat (2') cannot be positioned against each other at the same time, and the value of H2 needs to be calculated by subtracting the depth of the limit step (33') from the total height of the mounting seat (2') , such a second reading will lead to a large error in the measurement data, which will affect the processing of the mounting seat (2'), and it is difficult to control the product quality of the mounting seat (2'), especially affecting the dimensional consistency of H2

[0009] 3. The circlip (7’) is made by stamping equipment, the upper surface is smooth, but there are often burrs on the lower surface, the product quality is unstable, which affects the assembly of the circlip (7’)

[0010] 4. Due to the unstable product quality of the adjusting rod (1'), mounting base (2') and retaining spring (7') mentioned in the above items 1, 2, and 3, H1 and H2 have certain deviations from the theoretical values , which will cause the lower end surface of the circlip groove (15') and the upper end surface of the installation seat (2') to be unable to be at the same height when the adjusting rod (1') and the mounting seat (2') are installed. After installation, the adjustment rod (1') is either too loose, easy to move up and down, or too tight, difficult to hold and rotate, which will affect the final performance of the thermostatic valve core

[0011] 5. In order to facilitate the installation of the adjustment rod (1') from bottom to top, the transition rod part (12') of the adjustment rod (1') and the upper installation cavity (31') of the mounting seat (2') need clearance fit , that is, there is a certain gap between the transition rod (12') and the wall of the upper installation chamber (31'). During the actual use of the adjustment rod (1'), it may swing left and right, which will affect the thermostatic valve. Core performance

However, the disassembly and assembly process of the thermostatic valve core is not easy, and spare parts may be lost if you are not careful. It is troublesome for workers to operate in the process of replacing the adjustment rod (1’), and the efficiency is very low.

[0013] As can be seen above, due to the limitations of the installation design of the adjusting rod (1'), the clamp spring should be used for limit fixation, and the adjusting rod (1') needs to be precisely matched with the corresponding mounting seat (2'), so that the adjusting rod (1') ) and the mounting seat (2') are difficult to process, and it is not easy to measure and control the product quality. performance is adversely affected

In addition, when the adjustment rod (1') needs to be replaced, the thermostatic valve core needs to be disassembled again, the overall operation is cumbersome and the efficiency is very low

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