CN205136780U - Thermostatic controller - Google Patents

Abstract

A thermostatic controller. The present invention solves the problems that the existing temperature controller has complex structure, manual adjustment is troublesome, and cannot be adjusted during assembly. It includes a casing and a base. The casing and the base rotate in a circumferential direction. The casing is provided with a temperature package, a temperature package and a temperature package cover. The threaded bottom of the temperature package is threaded with the base. The upper gear part of the cover and the inside of the shell slide up and down to cooperate, and there is a limit position on the cover to prevent the misalignment of the temperature cover; the shell is marked with numbers, so that it is convenient to roughly know the opening of the temperature control valve when turning the shell To prevent the temperature package from opening too large or too small during fine-tuning; there is an adjustable ejector rod between the temperature package cover and the base, which is convenient for assembly and height adjustment during use, without mechanical disassembly.

Description

a thermostat controller

technical field

The utility model relates to the technical field of temperature control valves, in particular to a constant temperature controller capable of controlling and regulating valves.

Background technique

The temperature control valve is suitable for various thermal working conditions such as steam, hot water, hot oil, etc., and is widely used for automatic temperature adjustment in heating, air conditioning, domestic hot water, and automatic temperature adjustment in special working conditions, but the valve itself It is very difficult to adjust, so it is necessary to use a thermostatic controller to control the opening of the valve and then control the flow through the height adjustment of the ejector rod of the thermostatic controller, so as to eliminate the influence caused by load fluctuations and restore the temperature to the set value.

The temperature control valve includes a thermostatic controller and a regulating valve. The thermostatic controller plays an important role in automatically adjusting the flow of the valve. Like a preset valve, a certain flow can be preset, and it can be precisely adjusted with a thermostatic controller. Control flow. Most of the constant temperature controllers currently used in the market are directly in contact with the bellows of the ejector rod and the temperature bulb. During the long-term use of such a structure, the outer wall of the bellows is easily broken by the valve stem, which reduces the service life of the temperature bulb. And affect the adjustment accuracy of the thermostat controller. The height of the ejector rod cannot be adjusted during installation and use, so that when the assembly and use cannot meet the requirements, destructive disassembly and reinstallation are required, which consumes a lot of manpower and material resources, so these structural layouts are unreasonable.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide a new constant temperature controller with long service life, adjustable height and reasonable structural layout.

The technical solution adopted by the utility model is: a constant temperature controller, including a shell, a base, a push rod assembly, a temperature package assembly, a temperature package cover, a temperature package cover and a connecting nut. The shell and the base are buckled and rotated in a circumferential direction, and the shell is provided with a temperature package and a temperature package assembly. The bottom thread of the temperature package is connected to the thread of the base for rotational movement, and the temperature package and the The upper part of the housing is relatively displaced up and down. The temperature bulb assembly includes a temperature bulb and a bottom cover that is sealed and connected with the temperature bulb. The temperature bulb and the bottom cover of the temperature bulb form a cavity. There is a bellows; there is a push rod inserted between the base and the temperature bulb, the hexagonal end of the push rod is inserted into the hexagonal groove of the base, and the other end of the push rod is inserted into the bellows of the temperature bulb through the temperature cover. The ejector rod assembly described above consists of a lower ejector rod, an ejector rod seat, an upper ejector rod and a spring. The lower ejector rod and the ejector rod seat are connected through threads, and a spring is interspersed between the upper ejector rod and the ejector rod seat. The base is snap-connected with the nut, and the nut is used for the connection between the thermostatic controller and the valve.

Through the above technical scheme, the threaded connection between the lower ejector rod and the ejector rod seat can be adjusted more precisely to adjust the height of the ejector rod, and it is not necessary to redesign the mold or mechanically adjust the thermostatic controller to meet the requirements during assembly and use. Disassembly and assembly, the temperature bulb is equipped with an elastic bellows, which makes it easier to use the principle of thermal expansion and contraction of the temperature-sensitive medium, and ensures the service life of the temperature bulb, and there is a spring between the ejector rod seat and the upper ejector rod To prevent damage to the bellows when the pressure is too high, the separately adjustable ejector pin is provided, which makes the operation easier and the structure layout more reasonable.

The utility model is further set as: the limit device between the adjustable lower ejector rod and the lower seat, the limit device includes a round through hole that adjusts the size of the bottom surface of the ejector rod to be larger than that of the base, and effectively prevents the ejector rod from It slides out during the working process, the structure is more compact, and the layout is more reasonable.

The utility model is further configured as follows: the outer shell and the inner wall of the base are provided with corresponding limit cards, and the outer shell and the base can only move circumferentially within a specified range, so as to prevent the temperature envelope from breaking away from the base due to excessive rotation; The corresponding number is marked on the base, and the base has an opening, which corresponds to the corresponding number when screwed to the corresponding position, so that it is convenient to intuitively know the opening degree of the temperature control valve when turning the shell, and avoid the temperature bulb being opened too much when fine-tuning Or too small, the structure is more reasonable.

Description of drawings

Fig. 1 is a sectional view of the utility model.

Figure 2 is an exploded view of the utility model.

Figure 3 is a schematic diagram of the structure of the adjustable ejector pin.

Figure 1 includes 1-housing, 2-temperature package upper cover, 3-temperature package, 4 upper ejector rod, 5-base, 6-connecting nut, 7-lower ejector rod, 8-spring, 9-ejector rod seat, 10-temperature package.

Figure 2 includes 1-housing, 2-temperature package upper cover, 3-temperature package, 4-upper ejector rod, 5-base, 6-connecting nut, 7-lower ejector rod, 8-spring, 9-top Rod mount, 10-temperature bulb.

detailed description

Below in conjunction with accompanying drawing, the utility model embodiment is further described:

As shown in Figure 1 in conjunction with Figure 2, the thermostatic controller can be adjusted. The shell 1 and the base 5 have a buckle-type structure, and they are rotated in a circumferential direction. There is also a limit card, so that the shell 1 and the base 5 can only be rotated in the circumferential direction within the limit stroke, preventing the stroke from being too large to separate the temperature package 3 from the base 5; the shell 1 is provided with a temperature package Cover 3, temperature package 10 and temperature package cover 2, the upper part of the temperature package 3 and the upper part of the shell 1 are provided with slotting slots for guiding use, so that the temperature package 3 drives the temperature package 10 in the shell 1 It is smoother and more accurate when sliding up and down; the temperature package 3 is arranged outside the temperature package 10 and linked with the temperature package 10, the temperature package 10 is provided with bellows, and the base 5 is provided with The ejector rod is composed of the lower ejector rod 7, the ejector rod seat 9, the upper ejector rod 4 and the spring 8. The upper end of the ejector rod passes through the temperature envelope 3 and is inserted into the bellows of the temperature envelope 10 to contact the end surface of the bellows. A spring 8 is installed between the ejector rod seat 9 and the upper ejector rod 4. The purpose is that the ejector rod will be subjected to increased force during the long-term use of the valve, so frequent opening and closing will easily cause damage to the bellows, thereby affecting The life of the temperature bulb 10, and the spring 8 is used between the ejector rod seat 9 and the upper ejector rod 4. There is elasticity between them, which can effectively avoid the rigid impact of the ejector rod on the bellows, and greatly prolong the service life of the temperature bulb 10. , the lower end of the ejector rod seat 9 is in a hexagonal shape, and the inside is a thread, and the thread cooperates with the thread of the lower ejector rod 7 to adjust the total height of the ejector rod, which changes the previous cutting of the long ejector rod and the modification of the short ejector rod. In addition, the pre-set height can be easily adjusted during assembly and use, which changes the previous destructive disassembly method, greatly improves the performance, and makes the structural layout more reasonable; the outer shell 1 is printed with corresponding The number is convenient to roughly know the opening degree of the temperature control valve when turning the shell 1, and avoids the opening degree of the temperature bulb 10 from being too large or too small when fine-tuning; the nut 6 connected to the valve is clamped under the base 5, and used The nut 6 is connected to facilitate installation and disassembly, and the structure and layout are more reasonable.

The upper part of the inner wall of the housing is provided with a guiding slot, the upper part of the temperature envelope is provided with a guiding slot matching the inner wall of the housing, and the guiding part is concave and convex. The structure of the convex-concave gear slotting chute can ensure that the temperature envelope and the shell will not rotate relative to each other, and can also slide up and down well along the guide of the chute.

A spring is provided between the ejector rod seat and the upper ejector rod, the upper ejector rod is inserted into the ejector rod seat and positioned by the step of the ejector rod seat, the spring is placed inside the ejector rod seat and the small end of the upper ejector rod is locked, Such a structure constitutes an elastic tight fit. When the ejector rod is subject to a large impact, the spring in the ejector rod seat absorbs the impact force, effectively protecting the corrugation and prolonging the service life of the temperature bulb; the lower ejector rod and the ejector rod seat are used The threaded connection is convenient for adjusting the height of the ejector rod, which makes the adjustment easier during assembly and use, avoids destructive mechanical disassembly and assembly, and makes the structural layout more reasonable.

The specific use of the utility model is as follows: when in use, the base and the shell are relatively rotated, and the temperature envelope connected to the base is limited by the chute on the upper part of the rotation pair, so there can only be an up and down movement pair, and the rise or fall of the temperature envelope During the process, the temperature bulb connected with the temperature package cover moves up and down, thereby driving the ejector rod to push out or shrink, thereby controlling the closing or opening of the valve. Since there is a limit between the shell and the base, the corresponding opening degree can be set according to the corresponding position, and then the temperature controller can adjust itself according to the temperature. If you feel that the opening height you want can not be reached, you can also adjust the ejector rod. The rod adopts a threaded structure, and adjusting its height can preset the opening height of the valve. Later, according to the external temperature change, when the temperature rises, the medium expands, pushing the corrugation down and pushing the ejector pin downward, reducing the flow of heat medium; when the temperature is low, the medium shrinks, the bellows shrinks, and the spring in the ejector pin Push the ejector rod upward to increase the flow of heat medium. So as to achieve fine-tuning of the valve.

Notes to all technical personnel: Although the utility model has been described according to the above-mentioned specific embodiments, the inventive idea of the utility model is not limited to this utility model, and any modification using the inventive idea will be included in the protection scope of the patent right Inside.

Claims (5)

1. A constant temperature controller, comprising a shell (1) and a base (5), the shell (1) and the base (5) rotate in a circumferential direction, and the shell (1) is provided with a temperature cover ( 3), the temperature package (10) and the temperature package cover (2), the temperature package (3) is set on the temperature package (10) and linked with the temperature package (10), the temperature The bag (10) is provided with a bellows and a liquid medium, and the base (5) is provided with a lower ejector rod (7) and a ejector rod seat (9), and one end of the ejector rod seat (9) is placed on the base (5) In the hexagonal groove in the middle, the other end penetrates into the bellows of the temperature bulb (10) and connects with the upper ejector rod (4), and the lower ejector rod (7) is connected with the ejector rod seat (9) ) adopts threaded connection, which is characterized in that: the relative height of the lower ejector rod (7) can be rotated if you want to adjust the stroke during assembly or use, which changes the need for mechanical disassembly and assembly in the past, which is easy to cause damage to the thermostat; The ejector rod seat (9) and the upper ejector rod (4) adopt an elastic elastic fit, which is characterized in that: when the lower ejector rod (7) controls the valve, long-term force is not easy to cause damage to the bellows, and the elastic elastic fit is very good avoids this. 2. A constant temperature controller according to claim 1, characterized in that: the housing (1) is provided with gear-shaping guides, and the outer periphery of the temperature envelope (3) is provided with Shaping teeth can move up and down in the housing guide groove. 3. A constant temperature controller according to claim 1 or 2, characterized in that: the lower ejector rod (7) and the ejector rod seat (9) are threadedly connected so that the height of the ejector rod can be adjusted more precisely and the operation is simpler. The layout is more reasonable; the upper ejector rod (4) and the ejector rod seat (9) are connected by a spring tight fit, which protects the bellows and prolongs the service life of the thermostat; the hexagonal end of the ejector rod seat (9) is inserted into the base (5 ) is inserted into the bellows of the temperature bulb (10), and the temperature package (3) moves up and down in the slotted groove on the shell (1) to drive the temperature bulb (10) to move up and down and the ejector rod seat (9) move up and down; described ejector pin seat (9) can not rotate relative to the inside of base (5) hexagonal groove, so the height of lower ejector pin (7) can be finely adjusted. 4. A constant temperature controller according to claim 3, characterized in that: the shell (1) and the base (5) are snapped together to move in a circumferential direction, driving the thread under the temperature envelope (3) to be on the base (5) The inside of the thread rotates circumferentially, thereby moving up and down in the slotted groove on the top of the housing (1), driving the temperature bulb (10) and the ejector rod to move up and down to control the opening and closing of the temperature control valve; the housing ( 1) Marked with numbers so that the size of the adjusted flow can be visually determined. 5. A constant temperature controller according to claim 4, characterized in that: the side walls of the housing (1) and the base (5) are provided with shoulders, and the housing (1) is mounted on the base (5) The angle of the circumferential movement can only be within the range of their shoulders, which limits the opening and closing stroke of the valve; the lower end of the base (5) is clamped with a connecting nut (6) for connection with the temperature control valve.