CN210510366U

CN210510366U - Special ball valve for central air conditioner

Info

Publication number: CN210510366U
Application number: CN201921599477.0U
Authority: CN
Inventors: 熊军红
Original assignee: Aijiedun Valve Co ltd
Current assignee: Aijiedun Valve Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-05-12
Anticipated expiration: 2029-09-25

Abstract

The utility model provides a special ball valve of central air conditioning belongs to valve manufacturing technical field. It has solved the unable normal use problem behind the current central air conditioning ball valve cladding heat preservation cotton. This special ball valve of central air conditioning includes the valve body, the case, valve rod and handle, and the case is located the valve body, and the inner of valve rod stretches into the valve body and links firmly mutually with the case, and the outer end of valve rod is connected with the extension bar that stretches out the valve body, and the top of extension bar has and links firmly mutually with the handle, has linked firmly the lag on the valve body, and the lag overlaps in the extension bar outside and the top of lag is attached to in the junction setting of handle and extension bar, is equipped with the circumference stop gear that makes valve rod or extension bar rotatory between 0-90 corner in the lag. The utility model discloses supply can normal use after the cotton cladding of heat preservation, job stabilization nature is good.

Description

Special ball valve for central air conditioner

Technical Field

The utility model belongs to the technical field of the valve is made, a ball valve is related to, in particular to special ball valve of central air conditioning.

Background

With the rapid increase of economy, central air conditioners are gradually widely used. The central air conditioner mainly comprises a refrigeration (hot) host machine, a cold (hot) water circulating water pump, a cooling tower, a cooling water circulating water pump and a tail end, wherein the tail end comprises a fan coil, a fan unit, an air conditioning box and the like.

The pipeline end of central air conditioning all uses the valve with control pipeline switch, all can adopt stop valve or gate valve to control pipeline switch in the past, but stop valve and gate valve all have the flow little, problem with high costs, consequently central air conditioning all adopts the ball valve to control pipeline switch at present, and is effectual for keeping warm, all can wrap the heat preservation cotton on pipeline and ball valve, and this can cause the whole quilt of ball valve to be wrapped by the heat preservation cotton and can't use.

In order to solve the above problems, various ball valves have been designed to increase the application range, for example, chinese patent literature discloses a ball valve with an extended valve stem [ application number: 201420249660.9, respectively; authorization notice number: CN203892689U ], it includes the valve body, set up the case in the valve body, valve rod and handle, the inner of valve rod stretches into the valve body and links firmly with the case, its outer end stretches out the valve body, the ball valve still includes cylindrical extension bar and cylindric lag, the extension bar is fixed with the outer end circumference of the coaxial setting of valve rod and the inner of extension bar and valve rod, the outer end and the handle circumference of extension bar are fixed, the lag cover is located the extension bar outside and the both ends of extension bar all are located the lag, the outer end and the handle circumference of lag are fixed, it is spacing to the axial between the inner of lag and the valve rod.

Foretell ball valve passes through the setting of extension bar and lag, valve rod length has been increased, make its use in the underground of some narrow and small spaces or inconvenient doing, connect it on central air conditioning's pipeline, the lag can make things convenient for the cotton cladding of heat preservation, but can cause behind the cotton cladding of heat preservation that the convex protruding edge of lag and the stopper of valve body rotate to interfere greatly, the handle is difficult for driving, can't drive the lag even, extension bar and valve rod rotate, influence the normal switch of ball valve, lead to the unable normal work of central air conditioning.

Disclosure of Invention

The utility model aims at providing a supply to keep warm after the cotton cladding of heat preservation and can not influence job stabilization's special ball valve of central air conditioning to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a special ball valve of central air conditioning, includes valve body, case, valve rod and handle, the case be located the valve body, the inner of valve rod stretch into the valve body and link firmly mutually with the case, its characterized in that, the outer end of valve rod be connected with the extension bar that stretches out the valve body, the top of extension bar have and link firmly mutually with the handle, the valve body on link firmly the lag, the lag cover in the extension bar outside and the top of lag be close to the handle with the junction setting of extension bar, the lag in be equipped with the circumference stop gear who makes valve rod or extension bar rotatory between 0-90 corner.

In the ball valve special for the central air conditioner, the extension rod and the valve rod are of an integrated structure. The structure is compact, the processing is simple, the whole structure of the valve rod and the extension rod has high strength, and the service life is long.

In the above ball valve special for the central air conditioner, the valve body is provided with a cylindrical boss, the valve rod penetrates through the boss, the protective sleeve is sleeved outside the boss and is in threaded connection with the boss, and the outer wall of the protective sleeve is provided with a plurality of edge surfaces which are circumferentially and uniformly distributed. The protection cover is convenient to be connected with the valve body, the prism surface is convenient for the heat preservation cotton to be attached, and the heat preservation cotton coating effect is good.

In the ball valve special for the central air conditioner, the protective sleeve is provided with a reinforcing rib which axially extends between the adjacent edge surfaces, and the top of the protective sleeve is provided with a circle of convex rings which radially protrude. The strengthening rib and the convex ring increase the structural strength of the protecting sleeve, and the convex ring can avoid the crack at the top of the protecting sleeve, so that the service life is prolonged.

In the above ball valve for a central air conditioner, the circumferential limiting mechanism includes two symmetrically arranged grooves on the top of the protruding part, the valve rod radially penetrates through a limiting pin, and two ends of the limiting pin extending out of the valve rod are located in the corresponding grooves.

In the above ball valve for a central air conditioner, the inner wall of the protective sleeve is provided with a shoulder, and the limit pin is located between the shoulder and the top end of the convex part.

As another aspect, in the above ball valve for a central air conditioner, the circumferential limiting mechanism includes an integrally formed and radially protruding projection provided on the valve stem, the top end of the projection has a limiting groove, and the projection is located in the limiting groove. Two cell walls of spacing groove play limiting displacement, and when the lug was contradicted in a cell wall of spacing groove promptly, the case was in the off-state, and the valve rod drove the lug and rotated 90, and the case also rotated 90 along with the valve rod, and the lug was contradicted in another cell wall of spacing groove this moment, and the case is in complete intercommunication state.

In the ball valve special for the central air conditioner, the inner wall of the protective sleeve is attached to the extension rod, and at least two sealing rings sealed on the inner wall of the boss are embedded in the valve rod.

In the ball valve special for the central air conditioner, the handle is circumferentially and fixedly connected with the extension rod, and the extension rod is in threaded connection with a nut for compressing the handle. The connection is thus stable.

In the above ball valve for a central air conditioner, the bottom of the valve core is provided with a weight reduction groove.

Compared with the prior art, the special ball valve for the central air conditioner has the advantages of compact structure, convenience for heat preservation cotton cladding, no influence of heat preservation cotton, good working stability and long service life.

Drawings

Fig. 1 is a front view of the structure of the ball valve special for the central air conditioner.

Fig. 2 is a structural sectional view of the ball valve for central air conditioner.

Fig. 3 is a schematic structural diagram of the ball valve special for central air conditioner at the convex part.

In the figure, 1, a valve body; 2. a valve core; 3. a valve stem; 4. a handle; 5. lengthening a rod; 6. a protective sleeve; 61. a prism surface; 7. a boss portion; 8. reinforcing ribs; 9. a convex ring; 10. a groove; 11. a spacing pin; 12. a shoulder block; 13. a seal ring; 14. a nut; 15. and a weight reduction groove.

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 and fig. 2, this special ball valve of central air conditioning includes valve body 1, case 2, valve rod 3 and handle 4, case 2 is located valve body 1, the inner of valve rod 3 stretches into valve body 1 and links firmly with case 2 mutually, the outer end of valve rod 3 is connected with extension bar 5 who stretches out valve body 1, the top of extension bar 5 has and links firmly with handle 4 mutually, valve body 1 is last to have linked firmly lag 6, lag 6 overlaps in the extension bar 5 outside and the top of lag 6 is close to the junction setting of handle 4 and extension bar 5, be equipped with the circumference stop gear who makes valve rod 3 or extension bar 5 rotatory between 0-90 corner in the lag 6.

When the special ball valve for the central air conditioner is used, the protective sleeve 6 and the valve body 1 are coated with heat insulation cotton, the handle 4 is exposed out of the heat insulation cotton, and the heat insulation cotton cannot interfere because the circumferential limiting mechanism is positioned in the protective sleeve 6, so that the special ball valve for the central air conditioner works stably; rotating handle 4 can drive extension bar 5, valve rod 3 and rotate, and lag 6 can not rotate, can not cause the cotton not hard up that keeps warm, and valve rod 3 drives case 2 and rotates, is in the closed condition when case 2 does not rotate, and the corner marks 0 this moment, and case 2 is in whole open condition after rotating, and the corner marks 90 this moment, and valve rod 3 or extension bar 5 drive case 2 and rotate in order to realize the regulation of flow size at 0- ° 90 corner within range promptly.

Further saying, extension bar 5 and valve rod 3 formula structure as an organic whole in this embodiment, valve body 1 has the bellying 7 that is the tube-shape, and valve rod 3 passes the setting of

bellying

7, and 6 overcoat of lag cover in bellying 7 and with 7 threaded connection of bellying, the outer wall of lag cover 6 has the faceted pebble 61 of a plurality of face circumference equipartitions, and lag cover 6 all is equipped with the strengthening rib 8 of one axial extension between adjacent faceted pebble 61, and the top of lag cover 6 has the radial convex bulge loop 9 of round.

As shown in fig. 2 and 3, the circumferential limiting mechanism includes two symmetrically disposed grooves 10 at the top end of the protruding portion 7, a limiting pin 11 radially penetrates through the valve rod 3, and two ends of the limiting pin 11 extending out of the valve rod 3 are located in the corresponding grooves 10. Valve rod 3 drives spacer pin 11 and rotates, 11 both ends of spacer pin rotate in corresponding recess 10, two cell walls of recess 10 play limiting displacement, 11 both ends of spacer pin conflict respectively in corresponding recess 10 one side cell wall when, case 2 closes completely this moment, no flow, the corner is 0, drive spacer pin 11 when valve rod 3 and rotate 90, 11 both ends of spacer pin conflict respectively in the opposite side cell wall that corresponds recess 10, case 2 communicates completely this moment, the flow is the biggest, the corner is 90.

The inner wall of the protecting sleeve 6 is provided with a retaining shoulder 12, the limiting pin 11 is positioned between the retaining shoulder 12 and the top end of the convex part 7, the retaining shoulder 12 plays a role in blocking, and when the valve rod 3 axially displaces towards the handle 4 side, the retaining shoulder 12 blocks the limiting pin 11, so that the valve rod 3 is prevented from being separated from the protecting sleeve 6, and the working stability is improved; the inner wall of the protective sleeve 6 is attached to the extension bar 5, and the valve rod 3 is embedded with two sealing rings 13 sealed on the inner wall of the boss 7, so that the extension bar 5 and the valve rod 3 rotate stably and have good sealing performance; the handle 4 is circumferentially and fixedly connected with the extension bar 5, the handle 4 is provided with a waist-shaped hole, two symmetrically arranged cutting surfaces are cut at the top of the extension bar 5, the waist-shaped hole of the handle 4 is sleeved in the top of the extension bar 5, the waist-shaped hole is matched with the two cutting surfaces to circumferentially fix the handle 4 and the extension bar 5, and the extension bar 5 is in threaded connection with a nut 14 for pressing the handle 4; the bottom of the valve core 2 is provided with a weight reduction groove 15, the weight reduction groove 15 not only plays a role in weight reduction, but also saves consumables and reduces manufacturing cost on the premise of ensuring the structural strength of the valve core 2.

Those not described in detail in this specification are within the skill of the art. 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

1. A ball valve special for a central air conditioner comprises a valve body (1), a valve core (2), a valve rod (3) and a handle (4), wherein the valve core (2) is positioned in the valve body (1), the inner end of the valve rod (3) extends into the valve body (1) and is fixedly connected with the valve core (2), the ball valve is characterized in that the outer end of the valve rod (3) is connected with an extension rod (5) extending out of the valve body (1), the top of the extension rod (5) is fixedly connected with the handle (4), the valve body (1) is fixedly connected with a protective sleeve (6), the protective sleeve (6) is sleeved outside the extension rod (5), the top end of the protective sleeve (6) is close to the joint of the handle (4) and the extension rod (5), a circumferential limiting mechanism enabling the valve rod (3) or the extension rod (5) to rotate between 0-90 degrees is arranged in the protective sleeve (6), extension bar (5) and valve rod (3) formula structure as an organic whole, valve body (1) have boss (7) that are the tube-shape, valve rod (3) pass boss (7) and set up, lag (6) overcoat in boss (7) and with boss (7) threaded connection, the outer wall of lag (6) have faceted pebble (61) of a plurality of circumference equipartitions.

2. Special ball valve for central air conditioners according to claim 1, wherein the protecting jacket (6) is provided with an axially extending rib (8) between adjacent facets (61), and the top of the protecting jacket (6) is provided with a radially protruding bead (9).

3. The special ball valve for the central air conditioner as claimed in claim 1 or 2, wherein the circumferential limiting mechanism comprises two symmetrically arranged grooves (10) at the top end of the boss (7), a limiting pin (11) radially penetrates through the valve rod (3), and two ends of the limiting pin (11) extending out of the valve rod (3) are located in the corresponding grooves (10).

4. A special ball valve for central air-conditioning according to claim 3, characterized in that the inner wall of the protecting sleeve (6) is provided with a retaining shoulder (12), and the limit pin (11) is positioned between the retaining shoulder (12) and the top end of the convex part (7).

5. A special ball valve for central air-conditioning according to claim 1, characterized in that the circumferential limiting mechanism comprises an integrally formed and radially protruding projection provided on the valve stem (3), and the top end of the projection (7) is provided with a limiting groove, and the projection is positioned in the limiting groove.

6. Special ball valve for central air-conditioning according to claim 4, characterized in that the inner wall of the protecting cover (6) is arranged in accordance with the extension bar (5), and the valve rod (3) is embedded with at least two sealing rings (13) sealed on the inner wall of the bulge (7).

7. The special ball valve for the central air conditioner as claimed in claim 6, wherein the handle (4) is circumferentially and fixedly connected with an extension bar (5), and the extension bar (5) is in threaded connection with a nut (14) for pressing the handle (4).

8. The special ball valve for central air conditioners as claimed in claim 7, wherein the valve core (2) is provided with a weight-reducing groove (15) at the bottom.