CN210978867U

CN210978867U - Novel expansion valve with stable fixation

Info

Publication number: CN210978867U
Application number: CN201921747249.3U
Authority: CN
Inventors: 孔德鹏; 吴炜; 梁萍
Original assignee: Jiangsu Yima Machinery Co ltd
Current assignee: Jiangsu Yima Machinery Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-07-10
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a novel fixed stable expansion valve, including capillary, unit head, valve body, flange pipe and temperature sensing package, the unit head is fixed to be installed in the upper end of valve body, the one end of capillary is connected with the unit head gas tightness, and the other end is connected with the temperature sensing package gas tightness, the fixed surface that sets up at the valve body of flange pipe, the surface cover of flange pipe is equipped with ring and inner gear ring, the ring symmetric distribution has the both ends of inner gear ring and is connected with flange pipe fixed, and it has the drum to rotate to run through between two rings, the surface cover of drum is equipped with outer gear ring, outer gear ring meshes with inner gear ring mutually, and the one end of drum is seted up interior hexagonal sliding chamber; through designing internal gear ring and external gear ring, rotate internal gear ring and can drive external gear ring and drum and rotate, realize that the quick installation of expansion valve is fixed, handling efficiency is high, and flange bolted connection makes its fixed more stable.

Description

Novel expansion valve with stable fixation

Technical Field

The utility model belongs to the technical field of the expansion valve, concretely relates to novel fixed stable expansion valve.

Background

The expansion valve is a common valve in the oil industry, the valve is provided with a locking indicating mechanism, the expansion valve controls the flow of the valve through the superheat degree change at the tail end of an evaporator to prevent the phenomena of insufficient utilization of the area of the evaporator and cylinder knocking, and the expansion valve comprises a valve plate, a valve cover, a valve rod, a valve body, a valve seat ring, a flange, an anti-abrasion sleeve and the like.

The existing expansion valve has the problems that the expansion valve is installed by adopting welding or thread screwing connection, the welding is inconvenient to detach and replace, the thread screwing connection needs to ensure that a pipe body connected with the expansion valve can rotate, the installation method is troublesome, and the limitation is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel fixed stable expansion valve to solve the current expansion valve that proposes among the above-mentioned background art, there is the expansion valve installation to adopt welding or screw thread to close soon to connect more, and the welding is not convenient for dismantle the change, and the screw thread closes soon to connect and need ensure to rotate with the body that the expansion valve is connected, and this mounting method is comparatively troublesome, the great problem of limitation.

In order to achieve the above object, the utility model provides a following technical scheme: a novel expansion valve with stable fixation comprises a capillary tube, a power head, a valve body, a flange tube and a temperature sensing bulb, the power head is fixedly arranged at the upper end of the valve body, one end of the capillary tube is connected with the power head in an airtight way, the other end of the capillary tube is connected with the temperature sensing bulb in an airtight way, the flange pipe is fixedly arranged on the outer surface of the valve body, the outer surface of the flange pipe is sleeved with a circular ring and an inner gear ring, the circular rings are symmetrically distributed at two ends of the inner gear ring and are fixedly connected with the flange pipe, a cylinder is rotatably penetrated between the two circular rings, the outer surface of the cylinder is fixedly sleeved with an outer gear ring which is meshed with the inner gear ring, one end of the cylinder is provided with an inner hexagonal sliding cavity, the hexagonal prism is embedded in the inner hexagonal sliding cavity in a sliding mode, one end of the hexagonal prism extends out of the sliding cavity and is fixedly welded with a screw rod, and the screw rod is connected with the flange end of the flange pipe in a screwing mode through threads.

Preferably, the inner bottom wall of the cylinder is fixedly provided with a return spring, the other end of the return spring is fixedly provided with a sliding block, and the end part of the embedded end of the hexagonal prism is tightly pressed with the sliding block.

Preferably, two ends of the cylinder extend out of the outer surface of the circular ring, and the end part of the extending end is fixedly welded with a limiting ring.

Preferably, the end part of the screw rod is fixedly provided with a bulge which is of an arc-shaped structure.

Preferably, the outer side surface of the inner gear ring is uniformly distributed with blind holes, the outer surface of the circular ring is fixedly provided with a fixed block through screws, the fixed block is provided with bolts in a rotating mode, and the bolts are matched with the blind holes.

Preferably, the inner gear ring is provided with an inner threaded hole, and the outer surface of the inner gear ring is provided with anti-skid threads.

Preferably, the upper surface welding of unit head is fixed with the gag lever post, gag lever post evenly distributed has three, the capillary is the spiral cover and is established at the surface of gag lever post.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through designing internal gear ring and external gear ring, rotate internal gear ring and can drive external gear ring and drum and rotate, realize that the quick installation of expansion valve is fixed, handling efficiency is high, and flange bolted connection makes its fixed more stable.

(2) Through designing reset spring, exert a pressure to hexagonal prism, avoid the lead screw not hard up, set up the spacing ring, avoid drum and ring slippage, set up fixed block and bolt, prevent that the internal gear ring from revolving, set up anti-skidding line and internal thread hole, conveniently rotate the internal gear ring, set up the gag lever post, carry on spacingly and the protection to the capillary.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a view showing the connection structure of the flange pipe and the flange according to the present invention;

fig. 3 is a sectional view of a flange pipe of the present invention;

FIG. 4 is a side view of the inner gear ring of the present invention;

fig. 5 is a cross-sectional view of a cylinder of the present invention;

in the figure: 1. a capillary tube; 2. a power head; 3. a valve body; 4. a flange pipe; 5. a temperature sensing bulb; 6. a circular ring; 7. an inner gear ring; 8. a fixed block; 9. a cylinder; 10. a hexagonal prism; 11. a screw rod; 12. a protrusion; 13. an outer gear ring; 14. a limiting rod; 15. blind holes; 16. a return spring.

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.

Examples

Referring to fig. 1-5, the present invention provides a technical solution: a novel expansion valve with stable fixation comprises a capillary tube 1, a power head 2, a valve body 3, a flange tube 4 and a temperature sensing bulb 5, wherein the power head 2 is fixedly arranged at the upper end of the valve body 3, one end of the capillary tube 1 is connected with the power head 2 in an airtight manner, the other end of the capillary tube 1 is connected with the temperature sensing bulb 5 in an airtight manner, the flange tube 4 is fixedly arranged on the outer surface of the valve body 3, a circular ring 6 and an inner gear ring 7 are sleeved on the outer surface of the flange tube 4, the circular rings 6 are symmetrically distributed at two ends of the inner gear ring 7 and are welded and fixed with the flange tube 4, a cylinder 9 is rotatably penetrated between the two circular rings 6, an outer gear ring 13 is fixedly sleeved on the outer surface of the cylinder 9, the outer gear ring 13 is meshed with the inner gear ring 7, an inner hexagonal sliding cavity is formed at one end of the cylinder 9, a hexagonal prism 10 is slidably embedded in the inner hexagonal sliding cavity, one end of, the inner gear ring 7 is rotated to drive the outer gear ring 13 and the cylinder 9 to rotate, the cylinder 9 and the hexagonal prism 10 are in sliding fit through the inner hexagonal sliding cavity, so that the hexagonal prism 10 and the screw rod 11 can be driven to synchronously rotate by the rotation of the cylinder 9, and the flange pipe 4 and a pipe body to be connected are fixed through the screw rod 11.

In this embodiment, a return spring 16 is fixedly arranged on the inner bottom wall of the cylinder 9, a slider is fixedly arranged at the other end of the return spring 16, the end of the embedded end of the hexagonal prism 10 is tightly pressed against the slider, and the return spring 16 is arranged to apply a pressure to the hexagonal prism 10, so that the connection between the screw rod 11 and the flange is more fastened, and looseness is avoided.

In this embodiment, two ends of the cylinder 9 extend out of the outer surface of the ring 6, and the end of the extending end is welded and fixed with a limiting ring, and the limiting ring is arranged to prevent the cylinder 9 from slipping off the ring 6.

In this embodiment, the end portion of the screw rod 11 is fixedly provided with a protrusion 12, the protrusion 12 is of a circular arc-shaped structure, and the protrusion 12 is arranged, so that the flange to be connected and fixed is conveniently aligned with the screw rod 11, and the flange is conveniently screwed and fixed.

In this embodiment, the lateral surface evenly distributed of internal gear ring 7 has blind hole 15, and the surface of ring 6 is provided with fixed block 8 through the screw fixation, and it is provided with the bolt to close on fixed block 8, and the bolt cooperatees with blind hole 15, sets up fixed block 8 and bolt, avoids internal gear ring 7 to receive vibrations influence and takes place to become flexible.

In this embodiment, the internal gear ring 7 is provided with an internal thread hole, and the outer surface of the internal gear ring 7 is provided with anti-slip threads, which increases friction force and facilitates rotation of the internal gear ring 7.

In this embodiment, the limiting rods 14 are fixed to the upper surface of the power head 2 in a welding manner, three limiting rods 14 are uniformly distributed, the capillary tube 1 is spirally sleeved on the outer surface of the limiting rod 14, and the limiting rods 14 are arranged to limit and protect the capillary tube 1.

The utility model discloses a theory of operation and use flow: by arranging the inner gear ring 7 and the outer gear ring 13, the outer gear ring 13 and the cylinder 9 can be driven to rotate by rotating the inner gear ring 7, and the cylinder 9 and the hexagonal prism 10 are in sliding fit through the inner hexagonal sliding cavity, so that the hexagonal prism 10 and the screw rod 11 can be driven to synchronously rotate by rotating the cylinder 9, the flange pipe 4 and the pipe body to be connected are fixed through the screw rod 11, compared with the installation and fixation method, the expansion valve is convenient to disassemble and replace by welding, compared with the method, the thread screwing connection applicability between the pipe bodies is wider, and all the screw rods 11 can be driven to rotate by rotating the inner gear ring 7, so that the disassembly and assembly efficiency is high;

set up reset spring 16, exert a pressure to hexagonal prism 10, make the lead screw 11 fasten with being connected of flange more, avoid becoming flexible, set up fixed block 8 and bolt, be convenient for carry on spacingly to internal gear ring 7, avoid it to take place not hard up by vibrations influence, through setting up anti-skidding line, increase frictional force, set up the internal thread hole, it is fixed with internal gear ring 7 through the dead lever that has the external screw thread to be convenient for close soon, conveniently rotate internal gear ring 7, through setting up gag lever post 14, be convenient for carry on spacingly and the protection to capillary 1, avoid it to warp impaired.

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 utility model provides a novel fixed stable expansion valve, includes capillary (1), unit head (2), valve body (3), flange pipe (4) and thermal bulb (5), unit head (2) fixed mounting is in the upper end of valve body (3), the one end and the unit head (2) gas tightness of capillary (1) are connected, and the other end is connected with thermal bulb (5) gas tightness, flange pipe (4) are fixed to be set up at the surface of valve body (3), its characterized in that: the surface cover of flange pipe (4) is equipped with ring (6) and internal gear ring (7), ring (6) symmetric distribution at the both ends of internal gear ring (7) and with flange pipe (4) fixed connection, rotate between two rings (6) and run through and have drum (9), the fixed cover of surface of drum (9) is equipped with external gear ring (13), external gear ring (13) and internal gear ring (7) mesh mutually, and interior hexagonal sliding chamber has been seted up to the one end of drum (9), interior hexagonal sliding chamber sliding insert has hexagonal prism (10), and sliding chamber and welded fastening have lead screw (11) are stretched out to the one end of hexagonal prism (10), lead screw (11) close the connection through the screw with the flange end of flange pipe (4) soon.

2. A novel permanent and stable expansion valve according to claim 1, wherein: the inner bottom wall of the cylinder (9) is fixedly provided with a return spring (16), the other end of the return spring (16) is fixedly provided with a sliding block, and the end part of the embedded end of the hexagonal prism (10) is tightly pressed with the sliding block.

3. A novel permanent and stable expansion valve according to claim 1, wherein: two ends of the cylinder (9) extend out of the outer surface of the circular ring (6), and the end part of the extending end is fixedly welded with a limiting ring.

4. A novel permanent and stable expansion valve according to claim 1, wherein: the end part of the screw rod (11) is fixedly provided with a bulge (12), and the bulge (12) is of an arc-shaped structure.

5. A novel permanent and stable expansion valve according to claim 1, wherein: the outer side surface of the inner gear ring (7) is uniformly provided with blind holes (15), the outer surface of the circular ring (6) is fixedly provided with a fixing block (8) through screws, bolts are arranged on the fixing block (8) in a rotating mode and matched with the blind holes (15).

6. A novel permanent and stable expansion valve according to claim 1, wherein: an internal thread hole is formed in the inner gear ring (7), and anti-skid grains are arranged on the outer surface of the inner gear ring (7).

7. A novel permanent and stable expansion valve according to claim 1, wherein: the upper surface welding of unit head (2) is fixed with gag lever post (14), gag lever post (14) evenly distributed has three, capillary (1) is the outer surface that the spiral cover was established at gag lever post (14).