CN211953341U

CN211953341U - Novel thermostatic expansion valve

Info

Publication number: CN211953341U
Application number: CN202020500924.9U
Authority: CN
Inventors: 吴文文; 张明炯
Original assignee: Zhejiang Minte Auto Air Conditioner Co ltd
Current assignee: Zhejiang Minte Auto Air Conditioner Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-11-17
Anticipated expiration: 2030-04-08

Abstract

The utility model discloses a novel thermostatic expansion valve, which comprises an expansion valve body, wherein a valve rod is arranged inside the expansion valve body, one end of the valve rod passes through the expansion valve body and is arranged outside the expansion valve body, a seal seat is fixedly welded at one end of the expansion valve body where the valve rod is arranged, a press plate is arranged at one side of the seal seat, which is far away from the expansion valve body, a plurality of seal rings are clamped between the press plate and the seal seat, the press plate is fixedly welded on the inner wall of a port of a shell, the shell of the utility model is a thermostatic expansion structure, the shell and the expansion valve body are detachably connected through a pull buckle, the seal ring is matched, the sealing property between the two is qualified when the two are connected, the design ensures that the utility model is very convenient when the structure in the shell is maintained and checked, and the, the scrapped probability of the connecting structure is reduced, the service life of the utility model is prolonged, and the probability of replacement is reduced.

Description

Novel thermostatic expansion valve

Technical Field

The utility model relates to a novel thermal expansion valve belongs to expansion valve technical field.

Background

An expansion valve is an important component in a refrigeration system and is typically mounted between the reservoir and the evaporator. The expansion valve enables the medium-temperature high-pressure liquid refrigerant to be low-temperature low-pressure wet steam through throttling, then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect, and the expansion valve controls the flow of the valve through the change of the superheat degree of the tail end of the evaporator to prevent the phenomena of insufficient utilization of the area of the evaporator and cylinder knocking.

Among the prior art, the valve body of thermal expansion valve is fixed knot structure rather than between the part of being connected mostly, and the end department of its connection and the direct connection between the pipeline do not have intermediate structure, and the screw thread of end needs repeated dismouting in the maintenance, and the damage of in-process screw thread is very serious once more, the phenomenon of smooth silk appears easily to can't repair, must directly change the valve, the loss is very serious, exists inconveniently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel thermostatic expansion valve for solve the fixed knot structure mostly between thermostatic expansion valve's the valve body and the part that is connected, lug connection between its end department of connecting and the pipeline, there is not intermediate structure, and the screw thread of end needs repeated dismouting in the maintenance, and the damage of in-process screw thread is very serious once more, the phenomenon of smooth silk appears easily, and can't repair, must directly change the valve, and the loss is very serious, has inconvenient problem.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a novel thermostatic expansion valve, which comprises an expansion valve body, wherein a valve rod is arranged inside the expansion valve body, one end of the valve rod passes through the expansion valve body and is arranged outside the expansion valve body, a sealing seat is fixedly welded at one end of the expansion valve body where the valve rod is arranged, a pressing plate is arranged at one side of the sealing seat far away from the expansion valve body, a plurality of sealing rings are clamped between the pressing plate and the sealing seat, the pressing plate is fixedly welded on the inner wall of a port of a shell, a diaphragm is arranged inside the shell, the diaphragm is in sealing connection with the shell, a connecting rod is fixedly connected at the center of the diaphragm, a slot is arranged inside one end of the connecting rod far away from the diaphragm, the slot is spliced with one end of the valve rod far away from the expansion valve body, the port of the expansion valve body is fixedly connected with an outlet end and, the two connecting heads are correspondingly and fixedly arranged at one end of the two connecting pipes, the outlet end, the inlet end and the connecting pipes corresponding to the outlet end are respectively provided with a bolt seat, the bolt seat at the outlet end is connected with the bolt seat on the connecting pipe corresponding to the outlet end through a plurality of connecting bolts, and the bolt seat at the inlet end is connected with the bolt seat on the connecting pipe corresponding to the inlet end through a plurality of connecting bolts.

As an optimized technical scheme of the utility model, be equipped with the flank of thread on the one end lateral surface that the expansion valve body was kept away from to the linking pipe.

As an optimized technical scheme of the utility model, two all the centre gripping is equipped with sealed the pad between adapter and exit end and the entrance point.

As an optimized technical scheme of the utility model, install the capillary on the casing.

As an optimized technical scheme of the utility model, the outer wall of the outer opening of casing is fixed on the expansion valve body through a plurality of tabs.

As an optimized technical scheme of the utility model, the centre gripping has a plurality of sealing washers between clamp plate and the seal receptacle.

The utility model discloses the beneficial effect who reaches is:

the utility model relates to a shell which is a thermal expansion structure, and is detachably connected with an expansion valve body through a pull buckle, the design of a matching sealing ring ensures that the sealing performance is qualified when the shell is connected, the design ensures that the utility model is very convenient when the structure in the shell is maintained and checked, and the connecting joint is not damaged in the dismounting process, thereby reducing the probability of scrapping the connecting structure, prolonging the service life of the utility model, reducing the probability of replacement, the outlet end and the inlet end joint of the utility model are connected with the connecting pipe through the connecting bolt, no direct thread structure exists in the period, the thread surface on the connecting pipe is used for connecting the pipeline, the design ensures that the connecting joint of the expansion valve body is not influenced in the dismounting process between the utility model and the pipeline, even if the damage occurs, the connection can be completed only by replacing the connecting pipe, greatly reduced the cost of maintenance, the utility model discloses novel structure, convenient to use is a novel and thermal expansion valve who uses.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the structure of the connecting tube of the present invention;

fig. 3 is a schematic view of the position of the tab of the present invention.

In the figure: 1. an expansion valve body; 2. a sealing seat; 3. pressing a plate; 4. a seal ring; 5. a housing; 6. pulling the button; 7. a membrane; 8. a connecting rod; 9. a slot; 10. a valve stem; 11. a capillary tube; 12. an outlet end; 13. an inlet end; 14. connecting the pipe; 15. an adaptor head; 16. a gasket; 17. a thread face; 18. a bolt seat; 19. and connecting the bolt.

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.

Example (b): as shown in fig. 1-3, a novel thermostatic expansion valve comprises an expansion valve body 1, a valve rod 10 is disposed inside the expansion valve body 1, one end of the valve rod 10 passes through the expansion valve body 1 and is disposed outside the expansion valve body 1, a sealing seat 2 is fixedly welded to one end of the expansion valve body 1 where the valve rod 10 is located, a pressing plate 3 is disposed on one side of the sealing seat 2 away from the expansion valve body 1, a plurality of sealing rings 4 are clamped between the pressing plate 3 and the sealing seat 2, the pressing plate 3 is fixedly welded to an inner wall of a port of a housing 5, a diaphragm 7 is disposed inside the housing 5, the diaphragm 7 is hermetically connected to the housing 5, a connecting rod 8 is fixedly connected to a center of the diaphragm 7, a slot 9 is disposed inside one end of the connecting rod 8 away from the diaphragm 7, the slot 9 is inserted into one end of the valve rod 10 away from the expansion valve, the outlet end 12 and the inlet end 13 are inserted with the adaptor heads 15 in one-to-one correspondence in the ends far away from the expansion valve body 1, the two adaptor heads 15 are correspondingly and fixedly arranged on one end of the two adaptor pipes 14, the outlet end 12 and the inlet end 13 and the adaptor pipes 14 corresponding thereto are both provided with bolt seats 18, the bolt seat 18 on the outlet end 12 is connected with the bolt seat 18 on the adaptor pipe 14 corresponding thereto through a plurality of connecting bolts 19, and the bolt seat 18 on the inlet end 13 is connected with the bolt seat 18 on the adaptor pipe 14 corresponding thereto through a plurality of connecting bolts 19.

The outer side surface of one end of the connecting pipe 14 far away from the expansion valve body 1 is provided with a thread surface 17 so as to be convenient for connecting an external pipeline. Gaskets 16 are clamped between the two adapters 15 and the outlet end 12 and the inlet end 13 to enhance the sealing of the joints. The shell 5 is provided with a capillary tube 11 so as to facilitate the use of the utility model. The outer wall of the outer opening of the shell 5 is fixed on the expansion valve body 1 through a plurality of pull buckles 6 so as to be convenient for dismounting between the two. A plurality of sealing rings 4 are clamped between the pressing plate 3 and the sealing seat 2 to enhance the sealing performance of the utility model.

Specifically, the casing 5 designed by the utility model is a thermal expansion structure, which is detachably connected with the expansion valve body 1 through the pull buckle 6, and the design of the sealing ring 4 is matched, so that the sealing performance between the casing and the expansion valve body is qualified when the casing is connected, the design makes the utility model very convenient when the structure in the casing 5 is maintained and checked, and the connecting structure is not damaged in the dismounting process, thereby reducing the scrapping probability of the connecting structure, prolonging the service life of the utility model, and reducing the replacement probability, while the outlet end 12 and the inlet end 13 designed by the utility model are communicated with the connecting bolt 19 to connect the connecting pipe 14, no direct thread structure exists in the period, the thread surface 17 on the connecting pipe 14 is used for connecting the pipeline, the design makes the utility model not influence the connecting structure of the expansion valve body 1 in the dismounting process between the casing and the pipeline, even if appear damaging, also only need to change and link up pipe 14 and can accomplish, greatly reduced the cost of maintenance, the utility model discloses novel structure, convenient to use is a novel and thermal expansion valve who uses.

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. The novel thermostatic expansion valve is characterized by comprising an expansion valve body (1), wherein a valve rod (10) is arranged in the expansion valve body (1), one end of the valve rod (10) penetrates through the expansion valve body (1) and is arranged outside the expansion valve body (1), one end of the expansion valve body (1) where the valve rod (10) is located is fixedly welded with a seal seat (2), one side, away from the expansion valve body (1), of the seal seat (2) is provided with a pressing plate (3), a plurality of sealing rings (4) are clamped between the pressing plate (3) and the seal seat (2), the pressing plate (3) is fixedly welded on the inner wall of a port of a shell (5), a diaphragm (7) is arranged in the shell (5), the diaphragm (7) is in sealing connection with the shell (5), and a connecting rod (8) is fixedly connected with the center of the diaphragm (7), connect pole (8) and keep away from inside slot (9) that is equipped with of one end of diaphragm (7), peg graft between the one end of expansion valve body (1) is kept away from with valve rod (10) slot (9), the port department of expansion valve body (1) is respectively in exit end (12) and entrance point (13) fixed connection, it has adapter (15) to peg graft in exit end (12) and entrance point (13) keep away from the one end of expansion valve body (1) one-to-one, two adapter (15) correspond fixedly to be set up on one end of two adapter pipes (14), all be equipped with bolt socket (18) on exit end (12) and entrance point (13) and its adapter pipe (14) that correspond, connect through a plurality of connecting bolt (19) between bolt socket (18) on the adapter pipe (14) that the bolt socket (18) on exit end (12) and its correspond, through between bolt socket (18) on bolt socket (18) and the adapter pipe (14) that correspond on bolt socket (13) that correspond rather than pass through A plurality of connecting bolts (19) are connected.

2. A thermostatic expansion valve according to claim 1 wherein the connecting tube (14) has a threaded surface (17) on the outer side of the end remote from the expansion valve body (1).

3. A thermostatic expansion valve according to claim 1 wherein gaskets (16) are interposed between both of the two said adapters (15) and the outlet (12) and inlet (13) ends.

4. A novel thermostatic expansion valve according to claim 1 wherein a capillary tube (11) is attached to the housing (5).

5. A novel thermostatic expansion valve according to claim 1 wherein the outer wall of the outer opening of the housing (5) is fixed to the expansion valve body (1) by a plurality of tabs (6).

6. A new thermostatic expansion valve according to claim 1, characterized in that a plurality of sealing rings (4) are clamped between the pressure plate (3) and the sealing seat (2).