CN215110677U - Memory alloy constant temperature mixing valve - Google Patents

Abstract

The utility model provides a memory alloy constant temperature mixing valve belongs to the constant temperature mixing valve field. The paraffin wax thermostatic mixing valve solves the problems that a thermostatic element in a traditional paraffin wax thermostatic mixing valve is short in service life, low in temperature sensing sensitivity, poor in thermostatic effect and poor in use experience. This memory alloy thermostatic mixing valve, this control by temperature change mixing valve top-down have cold interface and the hot interface of intaking about the casing respectively including temperature adjusting hand wheel, handle seat, adjustment handle, double-screw bolt, biasing spring, go up the plunger, lower plunger, memory alloy spring and casing in proper order, and the lower part has mixed water interface, all is provided with the check valve in cold interface and the hot interface of intaking, and the check valve front portion all is provided with the filter screen, it has the hot water runner under the up end of plunger and the handle seat between the terminal surface, has the cold water runner between the lower terminal surface of going up the plunger and the inner chamber face A that the casing corresponds. The utility model has the advantages of long service life, high temperature sensing sensitivity, good constant temperature effect and good use experience.

Description

Memory alloy constant temperature mixing valve

Technical Field

The utility model belongs to constant temperature mixing valve field relates to a constant temperature mixing valve, in particular to memory alloy constant temperature mixing valve.

Background

As is well known, most of thermostatic mixing valves at the present stage adopt a paraffin wax thermal bulb as a temperature control element, and the traditional paraffin wax thermal bulb has the defects of complex manufacturing process, incapability of working at a high temperature for a long time, poor temperature sensing sensitivity and short service life. The inverse memory alloy spring has the advantages of simple manufacturing process, high and low temperature resistance, sensitive temperature sensing and long service life.

In addition, water flowing through the conventional temperature control mixing valve can enter the thread of the adjusting handle and the thread of the stud to form scaling, so that the friction force of the threads is increased, even the stud is locked, and the operation hand feeling of people and the service life of the mixing valve are influenced.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a memory alloy constant temperature mixing valve that hot and cold water mixing is effectual, inner structure is simple and the dismouting is convenient.

The purpose of the utility model can be realized by the following technical proposal: a memory alloy thermostatic mixing valve is characterized by comprising a temperature adjusting hand wheel, a handle seat, an adjusting handle, a stud, a bias spring, an upper plunger, a lower plunger, a memory alloy spring and a shell from top to bottom in sequence, wherein the left part and the right part of the shell are respectively provided with a cold water inlet interface and a hot water inlet interface, the lower part of the shell is provided with a mixed water outlet interface, check valves are respectively arranged in the cold water inlet interface and the hot water inlet interface, the front parts of the check valves are respectively provided with a filter screen, a hot water flow passage for hot water passing is arranged between the upper end surface of the upper plunger and the lower end surface of the handle seat, a cold water flow passage for cold water to pass through is arranged between the lower end surface of the upper plunger and an inner cavity surface A corresponding to the shell, a plurality of cold water passing holes uniformly distributed are circumferentially arranged in the upper plunger, and a mixing cavity for cold water and hot water mixing is arranged between the upper plunger and the handle seat, the upper plunger and the lower plunger are abutted to form a semi-closed cavity, the middle parts of the upper plunger and the lower plunger are all penetrated and provided with mixed water outlets, the upper plunger and the lower plunger which are abutted to each other enable the two mixed water outlets to be communicated with each other, cold water entering the lower end face of the upper plunger is guided into a cold water through the cavity to flow into a cold water through hole of the upper plunger to be mixed with hot water to form mixed water, and the mixed water flows to the mixed water outlet of the lower plunger through the mixed water outlet of the upper plunger after secondary mixing of a biasing spring, is contacted with a memory alloy spring placed in the shell and flows out from the mixed water outlets.

In the memory alloy thermostatic mixing valve, the surface of the temperature adjusting hand wheel is provided with a plurality of grooves, the inner wall of the temperature adjusting hand wheel is provided with a limiting rib which plays a limiting role, and the position of the shell corresponding to the limiting rib is provided with a limiting bulge.

In the memory alloy thermostatic mixing valve, the bottom of the stud is concave, the bottom surface of the stud is a closed surface, one end of the bias spring abuts against the bottom surface of the stud, and the other end of the bias spring abuts against the plunger.

In the memory alloy thermostatic mixing valve, the cold water inlet connector is in threaded connection with a cold water inlet pipe, the hot water inlet connector is in threaded connection with a hot water inlet pipe, and the mixed water outlet pipeline is in threaded connection with a mixed water outlet pipe.

In foretell memory alloy constant temperature mixing valve, the temperature control hand wheel pass through the screw and be fixed mutually with adjustment handle, adjustment handle and handle seat pass through E type jump ring and fix mutually, handle seat and casing pass through the screw thread and fix mutually, filter screen and check valve all be fixed in respectively through jump ring one and jump ring two and advance in water interface and the hot water interface.

In foretell memory alloy constant temperature mixing valve, handle seat and adjustment handle between be equipped with the wear-resisting gasket who plays wear-resisting effect, casing and last plunger between be equipped with the sealing member one that plays sealed effect, casing and lower plunger between be equipped with the sealing member two that plays sealed effect, double-screw bolt and handle seat between install sealing member three, the junction of handle seat and casing install sealing member four.

Compared with the prior art, the memory alloy constant-temperature mixing valve has the following advantages:

1. the whole mixing valve is directly fixed through threads, so that the assembly is simple, the connection is firm, and the maintenance is convenient;

2. through the arrangement of the sealing surface, the threads of the adjusting handle and the stud cannot contact water, the threads cannot generate scale, and the operation hand feeling and the service life of the adjusting handle cannot be influenced;

3. the memory alloy spring is used for contacting mixed water and adjusting the mixing ratio of cold water and hot water, so that the mixed water can stably reach the set temperature.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic sectional structure diagram of the present invention.

In the figure, 1, a temperature adjusting hand wheel; 2. a handle seat; 3. a housing; 4. an adjusting handle; 5. a stud; 6. a biasing spring; 7. an upper plunger; 8. a lower plunger; 9. a memory alloy spring; 10. a cold water inlet interface; 11. a hot water inlet interface; 12. a mixed water outlet interface; 13. cold water holes; 14. a cold water flow passage; 15. a hot water flow passage; 16. a mixing chamber; 17. a check valve; 18. filtering with a screen; 19. e-shaped clamp springs; 20. a clamp spring I; 21. a second clamp spring; 22. a first sealing element; 23. a second sealing element; 24. a third sealing element; 25. a fourth sealing element; 26. a wear resistant pad; 27. and (4) screws.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the memory alloy thermostatic mixing valve comprises a temperature adjusting hand wheel, a handle seat, an adjusting handle, a stud, a bias spring, an upper plunger, a lower plunger, a memory alloy spring and a shell from top to bottom in sequence, wherein the left and the right of the shell are respectively provided with a cold water inlet interface and a hot water inlet interface, the lower part of the shell is provided with a mixed water outlet interface, the cold water inlet interface and the hot water inlet interface are respectively provided with a check valve, the front part of the check valve is provided with a filter screen, a hot water channel for hot water to pass through is arranged between the upper end surface of the upper plunger and the lower end surface of the handle seat, a cold water channel for cold water to pass through is arranged between the lower end surface of the upper plunger and the inner cavity surface A corresponding to the shell, a plurality of cold water passing holes uniformly distributed are circumferentially arranged in the upper plunger, a mixing cavity for cold water and hot water to mix is arranged between the upper plunger and the handle seat, and the lower plunger are abutted to form a semi-closed cavity, the middle parts of the upper plunger and the lower plunger are all penetrated and provided with mixed water outlets, the upper plunger and the lower plunger which are abutted against each other enable the two mixed water outlets to be communicated with each other, cold water entering the lower end face of the upper plunger is guided into a cold water through the cavity to flow into the cold water through hole of the upper plunger to be mixed with hot water to form mixed water, and the mixed water flows to the mixed water outlet of the lower plunger through the mixed water outlet of the upper plunger after secondary mixing of the biasing spring, is contacted with the memory alloy spring placed in the shell and flows out from the mixed water outlets. The memory alloy spring is used for contacting mixed water and adjusting the mixing ratio of cold water and hot water, so that the mixed water can stably reach the set temperature.

In a further elaboration, the surface of the temperature adjusting hand wheel is provided with a plurality of grooves for improving the operation hand feeling, the inner wall of the temperature adjusting hand wheel is provided with limiting ribs for limiting, and the position of the shell corresponding to the limiting ribs is provided with limiting bulges. The function of limiting the height and the temperature of the temperature adjusting hand wheel is achieved by the limit ribs and the limit bulges. The outer surface of the bottom of the temperature adjusting hand wheel is provided with a cold and hot water temperature mark.

In more detail, the bottom of the stud is concave, the bottom surface of the stud is a closed surface, one end of the bias spring abuts against the bottom surface of the stud, and the other end of the bias spring abuts against the plunger. Through the setting of closing surface, make the screw thread contact of adjustment handle and double-screw bolt not reach water, the screw thread can not produce the scale deposit, can not influence adjustment handle's operation and feel and life.

In further detail, the cold water inlet interface is in threaded connection with a cold water inlet pipe, the hot water inlet interface is in threaded connection with a hot water inlet pipe, and the mixed water outlet pipeline is in threaded connection with a mixed water outlet pipe.

In a further elaboration, the temperature adjusting hand wheel is fixed with the adjusting handle through a screw, the adjusting handle is fixed with the handle seat through an E-shaped clamp spring, the handle seat is fixed with the shell through a thread, and the filter screen and the check valve are respectively fixed in the cold water inlet interface and the hot water inlet interface through a clamp spring I and a clamp spring II.

In further detail, a wear-resistant gasket with a wear-resistant effect is arranged between the handle seat and the adjusting handle, a first sealing element with a sealing effect is arranged between the shell and the upper plunger, a second sealing element with a sealing effect is arranged between the shell and the lower plunger, a third sealing element is arranged between the stud and the handle seat, and a fourth sealing element is arranged at the joint of the handle seat and the shell.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (6)

1. A memory alloy thermostatic mixing valve is characterized by comprising a temperature regulating hand wheel (1), a handle seat (2), a regulating handle (4), a stud (5), a bias spring (6), an upper plunger (7), a lower plunger (8), a memory alloy spring (9) and a shell (3) from top to bottom in sequence, wherein the left side and the right side of the shell (3) are respectively provided with a cold water inlet interface (10) and a hot water inlet interface (11), the lower part of the shell is provided with a mixed water outlet interface (12), check valves (17) are arranged in the cold water inlet interface (10) and the hot water inlet interface (11), the front parts of the check valves (17) are respectively provided with a filter screen (18), a hot water flow passage through which hot water passes is arranged between the upper end surface of the upper plunger (7) and the lower end surface of the handle seat (2), and a cold water flow passage through which cold water passes is arranged between the lower end surface of the upper plunger (7) and an inner cavity surface A corresponding to the shell (3), a plurality of cold water passing holes (13) which are uniformly distributed are formed in the upper plunger (7) in the circumferential direction, a mixing cavity (16) for mixing cold water and hot water is formed between the upper plunger (7) and the handle seat (2), the upper plunger (7) and the lower plunger (8) are abutted to form a semi-closed cavity, mixed water outlets are formed in the middle parts of the upper plunger (7) and the lower plunger (8) in a penetrating manner, the upper plunger (7) and the lower plunger (8) which are abutted to each other are communicated with each other, cold water entering the lower end face of the upper plunger (7) is guided into the cold water passing holes (13) of the upper plunger (7) through the cavity to flow into the mixing cavity (16) and be mixed with the hot water to form mixed water, the mixed water flows to the mixed water outlet of the lower plunger (8) through the mixed water outlet of the upper plunger (7) after secondary mixing of the biasing spring (6) and is in contact with the memory alloy spring (9) placed in the shell (3), and flows out of the mixed water outlet.

2. A memory alloy thermostatic mixing valve according to claim 1, characterized in that the surface of the temperature adjusting hand wheel (1) has a plurality of grooves, the inner wall of the temperature adjusting hand wheel (1) has a limiting rib for limiting, and the housing (3) has a limiting protrusion at the position corresponding to the limiting rib.

3. A thermostatic mixing valve of memory alloy according to claim 1 wherein the bottom of the stud (5) is concave and the bottom of the stud (5) is a closed surface, one end of the biasing spring (6) abuts against the bottom of the stud (5) and the other end abuts against the upper plunger (7).

4. A memory alloy thermostatic mixing valve according to claim 1, wherein the cold water inlet port (10) is threadedly connected with a cold water inlet pipe, the hot water inlet port (11) is threadedly connected with a hot water inlet pipe, and the mixing water outlet pipe is threadedly connected with a mixing water outlet pipe.

5. A memory alloy thermostatic mixing valve according to claim 1, characterized in that the temperature adjusting hand wheel (1) is fixed with the adjusting handle (4) through a screw (27), the adjusting handle (4) is fixed with the handle seat (2) through an E-shaped snap spring (19), the handle seat (2) is fixed with the housing (3) through a screw thread, and the filter screen (18) and the check valve (17) are respectively fixed in the cold water inlet port (10) and the hot water inlet port (11) through a snap spring (20) and a snap spring (21).

6. A memory alloy thermostatic mixing valve according to claim 1, characterized in that a wear resistant washer (26) is provided between the handle seat (2) and the adjustment handle (4), a first sealing element (22) is provided between the housing (3) and the upper plunger (7), a second sealing element (23) is provided between the housing (3) and the lower plunger (8), a third sealing element (24) is provided between the stud (5) and the handle seat (2), and a fourth sealing element (25) is provided at the joint of the handle seat (2) and the housing (3).

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