CN214792036U

CN214792036U - Expansion valve for refrigeration equipment

Info

Publication number: CN214792036U
Application number: CN202120673009.4U
Authority: CN
Inventors: 李富强
Original assignee: Guangzhou Binglingda Refrigeration Equipment Co ltd
Current assignee: Guangzhou Binglingda Refrigeration Equipment Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-11-19
Anticipated expiration: 2031-04-02

Abstract

The utility model relates to an expansion valve technical field just discloses an expansion valve for refrigeration plant, including the valve body, the top threaded connection of valve body has the valve gap, and the entry swing joint of valve body has the connector, and the one end swing joint of valve body is being kept away from to the connector has the fixed head, and the entrance swing joint of connector has the filter screen, and the valve gap is from last to fixedly connected with push rod, valve ball and compression spring down in proper order. The utility model provides an expansion valve in the use, along with the inflow of liquid, there is impurity in the liquid, make the inboard of expansion valve dirty stifled appear easily, not only be difficult to rinse inside, still can lead to the system even the expansion valve aperture is opened to the biggest, still can't increase the refrigerant flow, the valve front valve back pressure differential is too big, the system can appear refrigeration effect bad, frosting and so on phenomenon behind the valve, cause the expansion valve easily to break down in the use, lead to the problem that expansion valve life slows down.

Description

Expansion valve for refrigeration equipment

Technical Field

The utility model relates to an expansion valve technical field specifically is an expansion valve for refrigeration plant.

Background

The expansion valve is an important part in a refrigeration system, and is generally arranged between the liquid storage cylinder and the evaporator, the expansion valve enables a medium-temperature high-pressure liquid refrigerant to be throttled into low-temperature low-pressure wet steam, and then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect;

in the use process of the expansion valve, impurities exist in liquid along with the inflow of the liquid, so that the inner side of the expansion valve is easily dirty and blocked, the inside of the expansion valve is difficult to clean, the opening degree of the expansion valve of the system is maximized, the flow of a refrigerant cannot be increased, the differential pressure between the front valve and the rear valve is too large, the system has the phenomena of poor refrigeration effect, frosting behind the valve and the like, the expansion valve is easy to break down in the use process, and the service life of the expansion valve is prolonged.

Disclosure of Invention

The utility model aims to provide an expansion valve for refrigeration equipment, reach and set up filter equipment at the import department that the expansion valve liquid flowed in, make the liquid that gets into the expansion valve filter earlier, reduce impurity and get into the inner structure, reduce the internal dirty stifled condition that appears, reduce the influence to the refrigeration effect, and filter equipment of inboard swing joint, after using a period, conveniently change filter equipment, and simple structure, the easy operation, ensure equipment filtration is permanent, thereby avoided the expansion valve in the use, along with the inflow of liquid, there is impurity in the liquid, make the inboard of expansion valve dirty stifled easily, not only be difficult to wash the inside, still can lead to the system even the expansion valve aperture is opened to the biggest, still can't increase the refrigerant flow, the valve front-valve back pressure differential is too big, the system can appear refrigeration effect is bad, frosting and so on the like behind the valve, so that the expansion valve is easy to have faults in the using process and the service life of the expansion valve is reduced.

In order to achieve the above object, the utility model provides a following technical scheme: an expansion valve for refrigeration equipment comprises a valve body, wherein the top of the valve body is in threaded connection with a valve cover, the inlet of the valve body is movably connected with a connector, one end of the connector, which is far away from the valve body, is movably connected with a fixed head, the inlet of the connector is movably connected with a filter screen, the valve cover is sequentially and fixedly connected with a push rod, a valve ball and a pressure spring from top to bottom, a filter device is arranged at an inlet where liquid flows in the expansion valve, so that the liquid entering the expansion valve is filtered firstly, impurities are reduced from entering an internal structure, the internal filth blockage situation is reduced, the influence on the refrigeration effect is reduced, the filter device movably connected at the inner side is convenient to replace after being used for a period of time, the structure is simple, the operation is convenient, the filtering continuity of the equipment is ensured, and therefore, the impurities in the liquid along with the inflow of the liquid in the use process of the expansion valve are avoided, dirty and blockage easily occurs on the inner side of the expansion valve, the inside of the expansion valve is difficult to clean, the refrigerant flow cannot be increased even if the opening degree of the expansion valve is maximized, the differential pressure between the front valve and the rear valve is too large, the system has the phenomena of poor refrigeration effect, frosting after the valve and the like, the expansion valve is easy to break down in the using process, and the service life of the expansion valve is prolonged.

Preferably, the valve body and the butt joint of the connector are provided with a preformed hole, the inner wall of the preformed hole is inserted with a butt bolt, the outer wall of the butt bolt is in threaded connection with a fixed spiral ring, a combined form is adopted, the expansion valve is conveniently combined, the expansion valve is conveniently split, and spare and accessory parts of loss in the expansion valve are conveniently replaced, so that the use value of the expansion valve is maximized, and the service life of the expansion valve is prolonged.

Preferably, the top of the fixed head is fixedly connected with an external threaded ring, the inner diameter of the external threaded ring is consistent with that of the fixed head, the same inner diameter is set, and the smoothness of liquid flowing after the subsequent connector is connected with the fixed head is guaranteed.

Preferably, the outer wall threaded connection of external thread ring has internal connection screw ring, internal connection screw ring is keeping away from external thread ring's one end and the entry inner wall fixed connection of connector, adopt threaded connection's form, conveniently change filter equipment, and simple structure, the high durability of simple operation, ensure equipment filtration, thereby avoided the expansion valve in the use, along with the inflow of liquid, there is impurity in the liquid, dirty stifled appears in the inboard that makes the expansion valve easily, not only be difficult to inside wash, still can lead to the system even the expansion valve aperture is opened to the biggest, still can't increase refrigerant flow, valve back pressure differential is too big before the valve, the refrigeration effect is bad can appear in the system, frosting and so on phenomenon behind the valve.

Preferably, the internal diameter of connector is unanimous with the internal diameter of fixed head, and pressure spring is located the filter screen directly over, and the expansion valve is in the use, and liquid flow is smooth and easy, promotes the expansion valve safety in utilization.

Preferably, the inner diameter of the inlet of the valve body is gradually increased, the inner diameter of the outlet of the valve body is larger than that of the inlet, and liquid flows smoothly.

The utility model provides an expansion valve for refrigeration plant. The method has the following beneficial effects:

(1) the utility model discloses a setting of valve body, valve gap, connector, butt joint bolt and fixed spiro adopts the form of combination, both conveniently makes up the expansion valve, makes things convenient for the expansion valve to carry out the split again to in the accessories to the loss in the expansion valve replace, make the expansion valve use value obtain the maximize, and promote expansion valve life.

(2) The utility model discloses a fixed head, external thread ring, internal connection thread ring, the setting of filter screen and connector, import department at the expansion valve liquid inflow sets up filter equipment, make the liquid that gets into the expansion valve pass through earlier and filter, it gets into inner structure to reduce impurity, reduce the inside dirty stifled condition that appears, reduce the influence to refrigeration effect, and inboard swing joint's filter equipment, after using a period, conveniently change filter equipment, and simple structure, the high durability and convenient operation, ensure equipment filtration, thereby the expansion valve has been avoided in the use, along with the inflow of liquid, there is impurity in the liquid, dirty stifled appearing in the inboard that makes the expansion valve easily, not only be difficult to rinse inside, still can lead to the system even the expansion valve aperture opens to the biggest, still can't increase the refrigerant flow, the differential pressure behind the valve is too big, the system can appear refrigerating effect badly, And frost formation and the like after the valve, so that the expansion valve is easy to break down in the using process, and the service life of the expansion valve is reduced.

Drawings

FIG. 1 is an inside view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a structural view of the fixing head of the present invention;

fig. 4 is a top view of the connector of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a connector; 4. a fixed head; 5. externally connecting a threaded ring; 6. an internally-connected threaded ring; 7. a filter screen; 8. a valve ball; 9. a pressure spring; 10. a push rod; 11. a butt bolt; 12. fixing the spiro ring; 13. holes are reserved.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model provides a technical solution: the utility model provides an expansion valve for refrigeration plant, includes valve body 1, and the top threaded connection of valve body 1 has valve gap 2, and the entry swing joint of valve body 1 has connector 3, and connector 3 has fixed head 4 at the one end swing joint who keeps away from valve body 1, and the entrance swing joint of connector 3 has filter screen 7, and valve gap 2 is from last to lower fixedly connected with push rod 10, valve ball 8 and pressure spring 9 in proper order.

Furthermore, preformed hole 13 has all been seted up to

valve body

1 and 3 butt joints of connector, and the inner wall of preformed hole 13 is pegged graft and is had docking bolt 11, and docking bolt 11's outer wall threaded connection has fixed spiro.

Further, the top of the fixed head 4 is fixedly connected with an external threaded ring 5, and the inner diameter of the external threaded ring 5 is consistent with that of the fixed head 4.

Further, the outer wall of the external threaded ring 5 is connected with an internal threaded ring 6 in a threaded manner, and one end, far away from the external threaded ring 5, of the internal threaded ring 6 is fixedly connected with the inner wall of the inlet of the connector 3.

Further, the inner diameter of the connecting head 3 is consistent with that of the fixing head 4, and the pressure spring 9 is positioned right above the filter screen 7.

Further, the inner diameter of the inlet of the valve body 1 is increased from small to large, and the inner diameter of the outlet of the valve body 1 is larger than the inner diameter of the inlet.

When the filter screen is used, firstly, the butt-joint bolt 11 is placed in the preformed hole 13, the connector 3 and the valve body 1 are tightly connected by utilizing the fixing spiral ring 12, the filter screen 7 is placed at the inlet of the connector 3, then, the external threaded ring 5 rotates clockwise towards the internal threaded ring 6 until the connector 3 is tightly butted with the fixing head 4, and the position of the filter screen 7 is fixed.

To sum up, the utility model adopts the combination form through the arrangement of the valve body 1, the valve cover 2, the connector 3, the butt bolt 11 and the fixed spiral ring 12, which not only facilitates the combination of the expansion valve, but also facilitates the disassembly of the expansion valve, so as to replace the parts and parts lost in the expansion valve, thereby promoting the maximum use value of the expansion valve and prolonging the service life of the expansion valve, through the arrangement of the fixed head 4, the external threaded ring 5, the internal threaded ring 6, the filter screen 7 and the connector 3, the filter device is arranged at the inlet of the expansion valve liquid, so that the liquid entering the expansion valve is filtered first, the impurities are reduced to enter the internal structure, the internal filth blockage condition is reduced, the influence on the refrigeration effect is reduced, and the filter device movably connected at the inner side is convenient to replace the filter device after being used for a period of time, the expansion valve has the advantages that the structure is simple, the operation is convenient and fast, the filtering continuity of the equipment is guaranteed, impurities exist in liquid along with the inflow of the liquid in the use process of the expansion valve, the inner side of the expansion valve is easy to dirty and block, the inside of the expansion valve is difficult to clean, the refrigerant flow cannot be increased even if the opening degree of the expansion valve is maximized in a system, the differential pressure between the front valve and the rear valve is too large, the refrigeration effect of the system is poor, the frosting occurs behind the valve, and the like, so that the expansion valve is easy to break down in the use process, and the service life of the expansion valve is prolonged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An expansion valve for refrigeration equipment, includes valve body (1), its characterized in that: the top threaded connection of valve body (1) has valve gap (2), and the entry swing joint of valve body (1) has connector (3), and the one end swing joint of keeping away from valve body (1) of connector (3) has fixed head (4), and the entrance swing joint of connector (3) has filter screen (7), and valve gap (2) are from last fixedly connected with push rod (10), valve ball (8) and compression spring (9) down in proper order.

2. An expansion valve for a refrigeration apparatus according to claim 1, wherein: preformed holes (13) are formed in the butt joint of the valve body (1) and the connector (3), butt bolts (11) are inserted into the inner walls of the preformed holes (13), and the outer walls of the butt bolts (11) are in threaded connection with fixing spiral rings.

3. An expansion valve for a refrigeration apparatus according to claim 1, wherein: the top of the fixed head (4) is fixedly connected with an external threaded ring (5), and the inner diameter of the external threaded ring (5) is consistent with that of the fixed head (4).

4. An expansion valve for a refrigeration apparatus according to claim 3, wherein: the outer wall of the external threaded ring (5) is in threaded connection with an internal threaded ring (6), and one end, far away from the external threaded ring (5), of the internal threaded ring (6) is fixedly connected with the inner wall of the inlet of the connector (3).

5. An expansion valve for a refrigeration apparatus according to claim 1, wherein: the inner diameter of the connector (3) is consistent with that of the fixed head (4), and the pressure spring (9) is positioned right above the filter screen (7).

6. An expansion valve for a refrigeration apparatus according to claim 1, wherein: the inner diameter of the inlet of the valve body (1) is gradually increased, and the inner diameter of the outlet of the valve body (1) is larger than that of the inlet.