CN206338497U - A kind of eccentric reducer - Google Patents

Abstract

The utility model discloses a kind of eccentric reducer, solve fluid and larger is impacted to reducing inside pipe wall, the problem of easily causing reducing tracheal rupture, its drip irrigation device is a kind of eccentric reducer, including connecting tube, it is respectively fixedly connected with big mouth pipe and small orifice at connecting tube two ends, it is fixedly connected with the inwall of the big mouth pipe in the fixed cylinder passed through for fluid, the fixed cylinder and is rotatably connected to impeller along its axis direction；By the addition of fixed cylinder and impeller, the energy and flow velocity of fluid reduce, and impact of the fluid to reducing inside pipe wall reduces, and reduces the possibility of reducing tracheal rupture.

Description

A kind of eccentric reducer

Technical field

The utility model is related to a kind of conduit coupling, more specifically, it relates to a kind of eccentric reducer.

Background technology

Reduced pipe is also known as reducing joint, concentric reducer is commonly called as, tubing has obtained universal use in modern society, if gone out Existing two pipe diameters to be connected are differed, then can not realize rightly be connected to two tubing by way of welding One piece, and interface effectively welded seal is realized, now can be using reduced pipe connection.

At present, Publication No. CN202360948U Chinese patent discloses a kind of shape of a hoof reducer pipe, provided with the shape of a hoof Body, the bore of the body upper end mouth of pipe is less than the bore of the lower end mouth of pipe, the body upper end mouth of pipe and lower end mouth of pipe eccentric setting, pipe Body horizontal section is circle, and the caliber of body from top to bottom gradually increases.

When the fluid in pipeline is flowed in the less pipeline of diameter by the pipeline being relatively large in diameter by above-mentioned reducer pipe, become The pressure and flow velocity of footpath tube fluid can increase therewith, and the inwall of reducer pipe is impacted, and after long-term use, reducer pipe is easy The phenomenon ruptured.

Utility model content

In view of the shortcomings of the prior art, the utility model is to provide a kind of eccentric reducer, by fixed cylinder and The addition of impeller, the energy and flow velocity of fluid reduce, and impact of the fluid to reducing inside pipe wall reduces, and reduces reducing tracheal rupture May.

To achieve the above object, the utility model provides following technical scheme：A kind of eccentric reducer, including connection Manage, be respectively fixedly connected with to be fixedly connected with big mouth pipe and small orifice at connecting tube two ends, the inwall of the big mouth pipe and be used for In the fixed cylinder that fluid passes through, the fixed cylinder impeller is rotatably connected to along its axis direction.

When the fluid in pipeline flows to small orifice by big mouth pipe, the pressure and flow velocity of fluid can increase therewith, by adopting With above-mentioned technical proposal, impeller is rotated in big mouth pipe, and fluid is flowed through after big mouth pipe, through the rotation of impeller impeller, impeller Inwall formation is impacted, the setting of fixed cylinder increases the contact area between fixed cylinder and big mouth pipe, reduces wheel rotation When the pressure of big mouth inside pipe wall, fluid are done work to impeller, reduce the energy and flow velocity of fluid, fluid reaches connecting tube and small During mouth pipe, speed reduces, and impact of the fluid to reducing inside pipe wall reduces, and reduces the possibility of reducing tracheal rupture.

The utility model is further arranged to：The fixed cylinder two ends are connected with speed reduction screen, and the impeller passes through speed reduction screen It is rotatably connected in fixed cylinder.

By using above-mentioned technical proposal, when fluid passes through speed reduction screen, speed reduces, and the energy loss in fluid reduces Pressure of the fluid to reduced pipe, while speed reduction screen is filtered to fluid, reduces the possibility that impurity in fluid passes through impeller.

The utility model is further arranged to：The fixed cylinder is threaded on the inwall of big mouth pipe.

By using above-mentioned technical proposal, when in fixed cylinder or impeller failure, or speed reduction screen impurity accumulation it is excessive, it is necessary to When changing speed reduction screen or impeller, the fixed cylinder of threaded connection is easy to filter screen or impeller to load and unload.

The utility model is further arranged to：Adding to outer connecting pipe inner bulge is fixed with the inwall of the connecting tube Thick ring.

By using above-mentioned technical proposal, thickening ring is fixedly connected on the inwall of connecting tube, adds connection tube wall Thickness, when fluid impact, first impact to thickening ring, reduce fluid to connect inside pipe wall pressure, reduce connection The possibility that inside pipe wall is damaged.

The utility model is further arranged to：Inwall of the thickening ring close to one end of small orifice and small orifice is tangent.

By using above-mentioned technical proposal, when fluid is from connecting tube into small orifice, fluid velocity change is smaller, reduces Pressure of the fluid to osculum inside pipe wall.

The utility model is further arranged to：The drainage trough that oriented small orifice is set is opened up on the inwall of the thickening ring.

By using above-mentioned technical proposal, the degree of rotation of connection tube fluid is reduced, the centrifugal force of fluid reduces, stream Body reduces to the pressure for connecting inside pipe wall.

The utility model is further arranged to：Decelerating ring is fixed with the inwall of the small orifice.

By using above-mentioned technical proposal, the addition of decelerating ring reduces the outlet of fluid, and fluid flows into small orifice Flow velocity reduce, connection tube fluid flowing velocity reduce, again reduce fluid to connect inside pipe wall pressure.

The utility model is further arranged to：The section of the decelerating ring is semicircle.

By using above-mentioned technical proposal, the impact of the decelerating ring more easily dispersing fluid of semi-circular cross-section to small orifice Power, it is to avoid decelerating ring stress is excessively concentrated.

In summary, the utility model has the advantages that：The addition of fixed cylinder and impeller, fluid passes through impeller band Movable vane wheel rotates, and fluid does work to impeller, reduces the energy and flow velocity of fluid, reduces the possibility of reducing tracheal rupture；Connection The setting of thickening ring further reduces pressure of the fluid to connector inwall on the inwall of pipe；The addition of decelerating ring reduces stream Body flows out the flow velocity of small orifice, and the flowing velocity of connection tube fluid reduces, and again reduces pressure of the fluid to connection inside pipe wall Power.

Brief description of the drawings

Fig. 1 is the stereogram of the present embodiment；

Fig. 2 is the cut-away view of big mouth pipe, small orifice and connecting tube in the present embodiment；

Fig. 3 is the explosive view of fixed cylinder and impeller.

Reference：1st, small orifice；11st, decelerating ring；2nd, big mouth pipe；21st, internal thread；3rd, connecting tube；31st, thickening ring；32、 Drainage trough；4th, welding groove；5th, fixed cylinder；51st, external screw thread；52nd, speed reduction screen；53rd, rotation hole；6th, impeller；61st, rotary shaft；62、 Blade.

Embodiment

The utility model is described further referring to figs. 1 to Fig. 3.

As shown in figure 1, a kind of eccentric reducer, high order end is cylindric small orifice 1, small orifice 1 is fixedly connected on right The connecting tube 3 of side, cylindric big mouth pipe 2 is fixedly connected on the right side of connecting tube 3, big mouth pipe 2 and small orifice 1 eccentric setting, And small orifice 1, big mouth pipe 2 and connecting tube 3 are integrally formed and lower end is horizontally disposed.

Be fixed with thickening ring on internal thread 21, the inwall of connecting tube 3 as shown in Fig. 2 being offered on the inwall of big mouth pipe 2 31, thickening ring 31 is smoothly set and middle part is thicker, and left and right ends are relatively thin, and the inwall of the left end of thickening ring 31 and small orifice 1 is tangent；Plus Offered on the inwall of thick ring 31 and several decelerations are fixedly connected with the drainage trough 32 in horizontal direction, the inwall of small orifice 1 Ring 11, the section of decelerating ring 11 is semicircle；It is further opened with the left end outer wall of small orifice 1 and on the right-hand member outer wall of big mouth pipe 2 Welding groove 4.

As shown in figures 1 and 3, also it is embedded with the inwall of big mouth pipe 2 on fixed cylinder 5, the outer wall of fixed cylinder 5 outside offering Screw thread 51, fixed cylinder 5 is threaded in the left end of big mouth pipe 2；Speed reduction screen 52 is connected to the two ends of fixed cylinder 5, two speed reduction screens 52 center offers rotation hole 53, and impeller 6 is rotatably connected in fixed cylinder 5, and impeller 6 includes rotary shaft 61 and blade 62, if Dry blade 62 is uniform respectively on the outer wall of rotary shaft 61 around the axle center of rotary shaft 61, outer end and the rotary shaft 61 of blade 62 Axle center tilt.

Operation principle：When fluid from right-hand member enters eccentric reducer, fluid enters from big mouth pipe 2, and fluid passes through speed reduction screen 52, fluid down, when fluid passes through impeller 6, impeller 6 is rotated, and fluid does work to impeller 6, and the speed and energy of fluid subtract Small, fluid spiral enters in connecting tube 3, and fluid impact reduces pressure of the fluid to the inwall of connecting tube 3 on thickening ring 31, Drainage trough 32 reduces the degree of rotation of fluid to fluid conduction, and fluid is gone out connecting tube 3 and entered after small orifice 1, and fluid is to surrounding Expansion, semicircular decelerating ring 11 again reduces the speed of fluid, and fluid flows out eccentric reducer from the left end of small orifice 1.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (8)

1. a kind of eccentric reducer, including big mouth pipe (2), small orifice (1) and connecting tube (3), the big mouth pipe (2) and small orifice (1) eccentric setting, the big mouth pipe (2) is connected with small orifice (1) by connecting tube (3), it is characterised in that：The big mouth pipe (2) it is fixedly connected with the fixed cylinder (5) passed through for fluid, the fixed cylinder (5) and is rotated along its axis direction on inwall It is connected with impeller (6).

2. a kind of eccentric reducer according to claim 1, it is characterised in that：Fixed cylinder (5) two ends, which are connected with, to be subtracted Fast net (52), the impeller (6) is rotatably connected in fixed cylinder (5) by speed reduction screen (52).

3. a kind of eccentric reducer according to claim 1, it is characterised in that：The fixed cylinder (5) is threaded in greatly On the inwall of mouth pipe (2).

4. a kind of eccentric reducer according to claim 1, it is characterised in that：It is fixed on the inwall of the connecting tube (3) The thickening ring (31) of oriented outer connecting pipe (3) inner bulge.

5. a kind of eccentric reducer according to claim 4, it is characterised in that：The thickening ring (31) is close to small orifice (1) inwall of one end and small orifice (1) is tangent.

6. a kind of eccentric reducer according to claim 5, it is characterised in that：Opened up on the inwall of the thickening ring (31) The drainage trough (32) that oriented small orifice (1) is set.

7. a kind of eccentric reducer according to claim 1, it is characterised in that：It is fixed on the inwall of the small orifice (1) There is decelerating ring (11).

8. a kind of eccentric reducer according to claim 7, it is characterised in that：The section of the decelerating ring (11) is semicircle Shape.