Novel expansion valve

Abstract

The utility model provides a novel expansion valve, and belongs to the technical field of valves. The problem that due to the fact that an existing expansion valve is not provided with a filtering structure, impurities enter an adjusting mechanism of the automobile air conditioner thermostatic expansion valve, and the adjusting mechanism is blocked is solved. The novel expansion valve comprises a valve body with an inlet end, a conical mounting seat is arranged at an end opening of the inlet end, a middle hole is formed in the conical mounting seat, a filtering device is arranged in the middle hole and connected to the conical mounting seat in a clamped mode, and the conical mounting seat is mounted at the inlet end through a plurality of screws. The filtering device comprises a sealing framework and a filtering net integrally arranged with the sealing framework, extending buckle tables are arranged on outer rings of the top end and the bottom end of the sealing framework, outwards-protruding buckle rings are arranged on the buckle tables, annular clamping grooves allowing the corresponding buckle rings to be clamped in are formed in the conical installation base, and the sealing framework is made of elastic materials. The filter has the advantages that the filter function is achieved, the filter effect is good, the filter structure is convenient to disassemble, and the adjusting mechanism is prevented from being blocked.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and relates to an expansion valve, and more particularly to a novel expansion valve. Background Technology

[0002] The expansion valves currently used in automotive air conditioning refrigeration systems lack a filter structure. As a result, trace impurities in the system often enter the regulating mechanism of the automotive air conditioning thermal expansion valve, causing the regulating mechanism to become clogged and preventing the system from working properly. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a novel expansion valve with a filtering function.

[0004] The objective of this utility model can be achieved through the following technical solution: A novel expansion valve, comprising a valve body having an inlet end, characterized in that a conical mounting seat is provided at the port of the inlet end, the conical mounting seat having a central hole, and a filter device being provided within the central hole, the filter device being snapped onto the conical mounting seat, the conical mounting seat being mounted on the inlet end by multiple screws, the filter device comprising a sealing frame and a filter screen integrally formed with the sealing frame, the outer ring of the top and bottom ends of the sealing frame having extended snap-fit ​​platforms, each snap-fit ​​platform having an outwardly protruding snap-fit ​​ring, the conical mounting seat having an annular groove for the corresponding snap-fit ​​ring to snap into, and the sealing frame being made of an elastic material.

[0005] In the aforementioned novel expansion valve, the latching platform also has a raised lifting platform.

[0006] In the aforementioned novel expansion valve, a small sealing ring is provided between the sealing skeleton and the conical mounting seat, and a large sealing ring is provided on the end wall of the inlet end and between it and the conical mounting seat.

[0007] Compared with existing technologies, this new type of expansion valve has the advantages of filtration function and good filtration effect, easy disassembly and cleaning of the filtration structure, and prevention of jamming of the adjustment mechanism. Attached Figure Description

[0008] Figure 1 This is a structural diagram of the new type of expansion valve.

[0009] Figure 2 yes Figure 1 Enlarged view of point A.

[0010] In the diagram, 1 is the inlet; 2 is the valve body; 3 is the conical mounting base; 4 is the screw; 5 is the sealing frame; 6 is the filter screen; 7 is the snap-fit ​​platform; 8 is the snap-fit ​​ring; 9 is the lifting platform; 10 is the small sealing ring; and 11 is the large sealing ring. Detailed Implementation

[0011] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0012] like Figure 1 , Figure 2 As shown, this novel expansion valve includes a valve body 2 with an inlet end 1. A conical mounting seat 3 is provided at the port of the inlet end 1. The conical mounting seat 3 has a central hole, and a filter device is provided inside the central hole. The filter device is snapped onto the conical mounting seat 3. The conical mounting seat 3 is installed on the inlet end 1 by multiple screws 4. The filter device includes a sealing frame 5 and a filter screen 6 integrally formed with the sealing frame 5. The top and bottom outer rings of the sealing frame 5 have extended snap-fit ​​platforms 7, and each snap-fit ​​platform 7 has an outwardly protruding snap-fit ​​ring 8. The conical mounting seat 3 has an annular groove for the corresponding snap-fit ​​ring 8 to be snapped into. The sealing frame 5 is made of elastic material. During installation, due to its elastic properties, the snap-fit ​​platform 7 springs outward and snaps onto the sealing frame 5, thereby causing the snap-fit ​​ring 8 to snap into the annular groove, achieving a snap-fit ​​effect.

[0013] To elaborate further, the buckle platform 7 also has a raised lifting platform 9. During disassembly, the entire conical mounting base 3 is disassembled, and the lifting platform 9 is pulled. Through elasticity, the buckle platform 7 opens, the buckle ring 8 disengages from the groove, and then the filter screen device is disassembled and cleaned.

[0014] Preferably, a small sealing ring 10 is provided between the sealing frame 5 and the conical mounting base 3, and a large sealing ring 11 is provided on the end wall of the inlet end 1 and between it and the conical mounting base 3.

[0015] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0016] Although this document frequently uses terms such as inlet end 1, valve body 2, conical mounting base 3, screw 4, sealing skeleton 5, filter screen 6, snap-fit ​​platform 7, snap-fit ​​ring 8, lifting platform 9, small sealing ring 10, and large sealing ring 11, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A new type of expansion valve comprising a valve body (2) having an inlet end (1), characterized in that, The port of the entering end (1) is provided with a conical mounting seat (3), the conical mounting seat (3) has a middle hole, and the middle hole is provided with a filtering device, the filtering device is clamped to the conical mounting seat (3), the conical mounting seat (3) is installed on the entering end (1) through a plurality of screws (4), the filtering device comprises a sealing framework (5) and a filter screen (6) integrally arranged with the sealing framework (5), the top end and the bottom end of the sealing framework (5) are provided with extended buckle tables (7), the buckle tables (7) are provided with outwardly protruding buckle rings (8), the conical mounting seat (3) is provided with annular buckle grooves for clamping the corresponding buckle rings (8), and the sealing framework (5) is made of elastic material.

2. A new expansion valve according to claim 1, characterized in that, The buckle tables (7) are also provided with protruding lifting tables (9).

3. A new type of expansion valve according to claim 1, characterized in that, Small sealing rings (10) are arranged between the sealing framework (5) and the conical mounting seat (3), and large sealing rings (11) are arranged on the end wall of the entering end (1) and between the conical mounting seat (3).

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