CN206188016U - A connect ell for realizing direction among pneumatic product conveying system from inlet tube to outlet pipe changes - Google Patents

Abstract

A connect ell for realizing direction among pneumatic product conveying system from inlet tube to outlet pipe changes, wherein this accessory enlarges along the outside of connecting the ell from the inlet tube for form the product grained layer of accumulation, so that with the speed removal that the speed than the input product stream is lower, establish the removal contact surface who is used for going into the product granule towards the inclined to one side transferred of outlet pipe simultaneously, have minimum pressure resistance and product consumption. The product granule of accumulation passes through to combine the ladder on the surface of connecting the ell and follows and connect the ell discharge to produce bernoulli effect, make the product granule of accumulation get into the air current after the input stream of product granule stops. Granule in the accumulation horizon supplyes from the input stream between the operating period of connecting the ell.

Description

For realizing that the direction in pneumatic product induction system from inlet tube to outlet changes Connection ell

Technical field

The present invention relates generally to pneumatic conveyer system, more particularly, to the accessory for Pneumatic pipe, to allow The change in the material direction for wherein conveying.

Background technology

The solid particle that conveying is injected into the high-speed air flow being included in pipeline or pipe is industrially many institute's weeks Know.Dilute phase speed carrys out the product of up to 5 pounds of movement per minute using up to 1 pound of air often beyond 60 mph. By pipeline.The typical air pressure limit of dilute phase system is 8-12psig.Using low pressure resistance realize air velocity high and Low product particle number, but which greatly enhances the destruction of the product particle for being conveyed.The destruction occurs in straight length, But can all be greatly increased when direction change is applied in induction system.

Every pound of air of close phase system moves more products, but is advanced with relatively low speed and pressure higher.Generally, it is The operating pressure of system will be no more than 45psig.No matter induction system is run under dilute phase or close phase, product particle is in transport During be subjected to sizable destruction, particularly when the change in use direction.In order to realize the change in direction, use even Ell is connect, its radius is 10 times of pipe diameter.However, the combination with centrifugal force causes most destruction at a high speed, especially It is to thermosensitive plastic compound.

The connection ell (elbow fitting) used in pneumatic conveyer system is generally in elbow (elbow) bending section Office is worn and torn, and the elbow bending section is consistent with the product stream entered in connection ell, no matter the connection ell is short Radius bend or major radius clean connection ell.Flow into the curved surface of elbow of the granule impact in connection ell and weighed New orientation.The product particle of jump forms turbulent region, and it slow down by the particle delivery speed of the system, often make Into blocking.Additionally, the motion of the product particle around the outer surface of the particle of jump and connection ell generates friction so that should It is hot that the surface of accessory feels.The heat can have detrimental effect to the product for conveying, particularly when the product is thermo-responsive When, such as plastic grain, thereon the edge of particle can melt and adhere on pipeline.

It is found that known to one in the U.S. Patent number 4387914 that June 14 nineteen eighty-three is presented to Hammertek companies Overcome the trial for changing nyctitropic problem in pneumatic conveyer system.In the patent of Hammertek, connection ell is formed with Vortex opening, it is substantially aligned with the input product stream from pipeline straight section.The vortex section is simulated by providing chamber The loose ball of the T-shape accessory of obstruction, wherein product particle slowly rotates, to deflect the product of input, without being made to accessory Into excessive wear.

It is presented in the U.S. Patent number 5288111 of Waeschle Maschinenfabrik GmbH within 2 22nd, 1994 Teach the trial for overcoming known to another kind and changing nyctitropic above mentioned problem in pneumatic conveyer system.In the special of Waeschle In profit, it is at an angle of the baffle plate for setting and is located in the heel for expanding, it has than transporting the cross section of the pipeline of input product more Big cross-sectional area.The size of the elbow cross section of expansion is increased towards interior elbow side from inlet tube by inwardly expanding. The excurvation rostral of enlarged defines the linear relationship with the inlet tube, is engaged with the baffle plate with direct product particle stream, The axis that the baffle plate is oriented relative to inlet tube is 55-65 degree.Therefore, the elbow cross section of expansion is not intended as providing along institute State the material stream in the outside of connection ell.Therefore, because directly affecting for the product stream of input, causes the excessive mill on baffle plate Damage.

On June 17th, 1986 is presented to Cubeco, the U.S. Patent number 4595319 of the Richard H.Cook of Inc. and On March 29th, 1988 is presented to the U.S. of the Edwin L.Haines of The Goodyear Tire and Rubber Company Other deflecting plates taught in the patent No. 4733889 for pneumatic conveyer system connect ell.The two patents are provided and expanded Corresponding linear deflector on the outside of big elbow cross section and the deflecting plates being obliquely installed or elbow.In August 19 in 1986 Day is presented in the U.S. Patent number 4606556 of the Robert E.Metzger of Fuller Company, ladder deflecting plates positioning The connection ell of abrasion is reduced to provide in outer elbow side.Because the abrasion of the ladder or rib, the additional thickness of material will be allowed The more long-life of accessory.The Josef of General Resource Corporation was presented within 26th within 2 months in 1991 In the U.S. Patent number 4995645 of Pausch, there is provided in the enlarged open region of the impact zone of input particle, to form product Accumulation, the afferent stream with product particle is consistent.Heel is expanded with 15 degree of subtended angle, with after the material with accumulation clashes into Improved products stream is provided.

In the U.S. Patent number 5024466 that on June 18th, 1991 is presented to Gregory R.Brotz, connection ell exists Excurvation rostral is formed with the box part of expansion, wherein positioning screen cloth to engage product particle.The box of expansion is attached partially to , to keep particle against screen member, to form the accumulating region of product, input product granule impact is to wherein for vacuum system.Institute The product particle of capture is retained on screen cloth, until fully wearing and tearing to be replaced by other product particles.Although Brotz patents Structure the impact of input product particle is absorbed there is provided gas producing formation, and thereby reduce to the abrasion on the outside of elbow, but Brotz Device does not consider the material stream moved along excurvation rostral.

It is therefore desirable to provide for pneumatic conveying or the connection ell of transportation system, to improve the outer elbow of accessory Wearing character on side, and improve the flow behavior of the product for being moved through the accessory.

The content of the invention

It is an object of the invention to overcome known existing skill by providing the connection ell for pneumatic conveyer system The disadvantages mentioned above of art.

It is a further object of the present invention to provide an accessory, for manufacturing direction in the stream of pneumatic product induction system Change.

Feature of this invention is that the connection ell expands along the outside of accessory, to provide the accumulation horizon of product particle.

It is one advantage of the present invention that the outer side impact of input product particle edge connection ell enters mobile relatively slow movement In accumulation horizon.

It is yet another object of the invention to provide the connection ell for the dynamic induction system of dense phase gas, without using deflecting plates Engage the inlet flow of product particle.

It is a further object of the present invention to provide connection ell, it is by from defeated with the product particle in pneumatic conveyer system The abrasion of the engagement experience minimum for becoming a mandarin.

Yet another advantage of the present invention is that the impact of input product grain particle is absorbed, without the structure to connecting ell Part causes significant wear.

Another feature of the present invention is the outside of the accumulation horizon edge connection ell of product particle with the speed than being input into particle stream The slower speed movement of degree.

A further feature of the present disclosure is constantly provided for defeated in the mobile accumulation horizon for connecting the product on the outside of ell Enter the fresh impact zone of product particle.

Another advantage is that the product particle in the mobile accumulation horizon of product is not subjected to the shifting because accumulation horizon Move and from the excessive wear of input granule impact, impact the generation of dust in product stream so as to minimize.

A further feature of the present disclosure is that elbow structure expands along connection ell outside from inlet tube, and along connection ell outside Shunk to outlet.

A further feature of the present disclosure is along the outside of accessory to position the expansion of the connection ell and be punctured into the shape of accumulation horizon Into ready, while in allowing accumulation horizon to reenter product stream at outlet.

Another advantage of the invention is that the enlarged configuration of the connection ell is established along the product on the outside of the connection ell Slow mobile accumulation horizon.

Another advantage is that the slow mobile accumulation horizon of product causes that the abrasion connected on ell outside is minimized.

A further feature of the present disclosure is that the shape for connecting ell provides ideal aerodynamics shape, for air and product Product stream passes through the accessory.

Another advantage is that by along connection ell on the outside of friction produce heat be minimum, and eliminate by In be connected the engagement of ell caused by plastic grain fusing.

Another advantage is that the mobile accumulation horizon of product is evenly distributed on the triangle accessory of expansion construction, with About 90 degree of reflectivities for obtaining upwardly toward outlet are provided.

A further feature of the present disclosure be the connection ell enlarged form it is triangular shaped.

Another advantage of the invention is that the connection ell provides the direction change for being used for pneumatic product induction system, is had Minimum pressure drag and product abrasion.

Another advantage is that the reduction of resistance result in the energy requirement of reduction, for by pneumatic conveying The product stream of system applies the change in direction.

Another feature of the present invention be for connect the enlarged shape on the outside of ell make use of gravity and Bernoulli's theorem with Reduce the speed of the gas producing formation of accumulation.

A further feature of the present disclosure is to provide connection ell construction, can be used to form the 90 degree of directions change for product stream Or 45 degree of directions change.

Another advantage of the invention is that the ladder sign for connecting ell is formd to connection elbow after the stopping of input product stream Effective removing of pipe.

It is yet another object of the invention to provide the connection ell for pneumatic product induction system, its structure durable, manufacture Cheaply, safeguard light, easy to assembly and use easy and effective.

According to the present invention, these and other objects, feature and advantage are by providing the company for pneumatic product induction system Connect ell to realize, the wherein accessory expands to cause the product particle layer shape of accumulation along the outside of connection ell from inlet tube Into to be moved with the lower speed of the speed than input product stream, while establishing for deflecting input towards outlet Product particle moving contact surface, with minimum pressure drag and product consumption.The product particle of accumulation is by even Connect and be combined with the outer surface of ell ladder and from connection ell discharge, to form Bernoulli effect, cause the product of the accumulation Product particle enters air-flow after the inlet flow of product particle stops.Particle in accumulation horizon during the operation of connection ell by Inlet flow is supplemented.

Brief description of the drawings

Consider content disclosed in detail below of the invention, advantages of the present invention will be apparent, and ought particularly combine During accompanying drawing, wherein：

Fig. 1 is with ladder sign 90 degree of perspective views of connection ell for combining the principle of the invention；

Fig. 2 is the front view of the connection ell shown in the Fig. 1 looked over from the intake section of accessory；

Fig. 3 is the front view of the connection ell shown in the Fig. 1 looked over from the exit portion of accessory；

Fig. 4 is the side view of the connection ell shown in Fig. 1；

Fig. 5 is the cross-sectional view of the connection ell shown in Fig. 1, along the cener line of accessory, corresponding to the line 5- of Fig. 3 5；

Fig. 6 is analogous to the front view of the alternative embodiments of the connection ell of Fig. 3, but is combined with attachment flange, uses In the outlet that connection ell is connected to pneumatic product induction system；

Fig. 7 is the side view of the connection ell shown in Fig. 6；

Fig. 8 is the cross-sectional view for connecting ell, along the cener line of accessory, corresponding to the line 8-8 of Fig. 6；

Fig. 9 is the side view of the alternative two-piece type implementation method for connecting ell, and it has replaceable wear member, shape Into the outside of the connection ell for combining the principle of the invention；

Figure 10 is the front view of the connection ell shown in the Fig. 9 looked over from the intake section of accessory；

Figure 11 is the top view of the connection ell shown in the Fig. 9 looked over from the exit portion of accessory；

Figure 12 is the decomposition side view of the connection ell shown in Fig. 9, and replaceable wear member is separated with main part.

Specific embodiment

Referring now to Fig. 1-5, can most preferably see 90 degree of the combination principle of the invention for pneumatic product induction system Connection ell.Connection ell 10 is connected to conventional inlet tube 12 and outlet 13, to provide the product line in pipeline 12,13 The direction of inbound path changes.Although the present invention is intended to be used in dilute-phase pneumatic system, the connection ell 10 of the principle of the invention is combined Can also be used for the dynamic system of dense phase gas.Under normal circumstances, the dynamic system of dense phase gas is by pipeline filling product particle, and injects q.s Air the product is moved through pipeline 12,13.Therefore, substantial amounts of product particle with notable speed be moved through pipeline 12, 13.Change direction typically results in the abrasion on the inside of product particle friction fitting, and this also generates heat by friction, fusible to pass through The plastic grain of pneumatic system conveying.

The connection ell 10 is preferably made up of durable metal material, such as steel, or preferably stainless steel, and including Intake section 16 and exit portion 17, each of which be sized in known manner with inlet tube 12 and the phase of outlet 13 Coordinate, such as by known compression coupling (not shown).Between intake section 16 and exit portion 17, ell 10 is connected Including inlet transition 18 and similar outlet transition section 19, it is connected respectively on intake section 16 and exit portion 17.Finally, Bending enlarged 15 is interconnected with entrance and exit changeover portion 18,19.

Circular cross section and bending expansion section of the entrance and exit changeover portion 18,19 in entrance and exit part 16,17 Exceed between the general triangular cross-sectional configuration for dividing 15.The triangle for bending enlarged 15 typically extends through bending expansion Most of 15, unless needed for another direction bent to from a direction on the summit 21 for bending enlarged 15.Preferably, Preferably referring to Fig. 2, bending the triangle of the triangular cross section of enlarged 15 has three bending summits 26, and it passes through directly Line part connects with adjacent summit 26, and one of them defines bottom 27, and the width that the bottom has is more than the entrance With the diameter of exit portion 16,17.

Cross-sectional view is checked by the cener line for connecting ell 10, as shown in Figure 3, it can be seen that connection ell 10 Inner side 21 point-blank extends to another straight line for running to outlet 13 from inlet tube 12 by bending area 24.Connection ell 10 Outside 25 by from intake section 16 extend downwardly through inlet transition 18 reach bending enlarged 15 be used for provide Connect the expansion transverse cross-sectional area of ell 10.

Gravity and centrifugal force law will force product particle to be outwardly into the enlarged area 30, with along the curved of connection ell 10 The outside 25 of bent enlarged 15 provides the feed pulp layer of the particle of accumulation.Due to bending the expansion cross-sectional area of enlarged 15 Domain, the speed of Bernoulli's theorem requirement product particle will compared to the speed of the product particle for being advanced through round entrance part 16 Slow down.This layer of particle is accumulated, is represented by dotted line 29, there is provided the mobile punching for leaving the input particle of intake section 16 Area is hit, then it can be deflected upwardly toward outlet 13, to realize that the direction to conveying products changes.

The product particle of accumulation prevents accessory 10 along the slow mobile layer 29 in the outside 25 of bending enlarged 15 Temperature raise, this is commonly due to friction, and rubs from input impact of the particle to the outside of accessory 10.Therefore, particle Will not be damaged because temperature is raised.

The bending enlarged 15 is preferably formed with curved outside 25, or for the sake of easily manufactured, can be by a pair The linear segment 36,37 that is interconnected by bending section 39 is formed.The out of plumb of linear segment 36,37 but by about 100 degree Angular deflection set, its line with the input product stream by inlet tube 12 is about into 80 degree.Due to the product for accumulating Granulosa 29 is used to deflect input particle towards outlet 13 along outside 25, and outside 25 need not be used as deflecting plates, and it needs phase Axis for inlet tube 12 is set into 55-65 degree.

Outlet transition section 19 is provided from the triangle of bending enlarged 15 to the round-shaped of exit portion 17 Seamlessly transit.Therefore, the product particle layer 29 of accumulation is vectored back to outlet 13, to provide the continuous particulate by connecting ell Stream, including the outside 25 along the accessory mobile accumulation horizon 29.

Can such as see in figures 6 to 8, the construction for connecting ell can be provided with conventional mounting flange 40, and it has A series of hole is used to dispose the fastener for connecting the connection ell 10 to the corresponding entrance and exit pipe 12,13 being equipped with.Ability Field technique personnel will also be appreciated that can form connection ell realizes that 45 the degree of product particle deflect, shown in accompanying drawing 90 degree of elbows.

Although above-mentioned connection ell 10 is particularly suitable for close phase or dilute-phase pneumatic Product transport system, this area skill Art personnel are it will be recognized that for realizing that the same principle that the direction of slurry Product transport system changes is also suitable.As described above Connection ell 10 provides lower drag, to realize that the direction in the product particle stream by the system changes.Therefore, realize It is low that direction changes major radius elbow known to required energy ratio.Connected known to ell due to friction loss for major radius Damage with impact to conveying products will be substantially reduced.Therefore, the excellent results with relatively low cost of energy are related to the present invention Connection.

It is described connection ell 10 outer surface 25 downward expansion preferably by the steep ladder 35 in inlet transition 18 come Realize.The ladder 35 has inclination angle, as most preferably seen in Fig. 4 and 7, its mark for being substantially greater than the intake section Claim about 10 degree of the bottom member 27 of the inclination angle of zero degree and bending enlarged 15 of inclination angle.The formation of ladder 35 is produced Give birth to Bernoulli effect, it is allowed to which the product particle layer of accumulation can be formed along the outer surface of bending enlarged 15, but using entrance The stopping for connecting the inlet flow of the product particle of ell 10 generates pressure differential, and it is logical that it attracts the particle from accumulation horizon 29 to enter Cross the air-flow of connection ell 10.Therefore, when pneumatic conveyer system stops conveying products particle, by the system for removing The final air stream of the product particle in system also will effectively from connection ell eliminating particle.

If not forming ladder 35, it is believed that enter the air that intake section 16 removes the surplus products particle of accessory 10 Flowing will pass through along the base plate 36 of outer enlarged surface 25 by the solid of accumulation, and clash into the rear wall 33 of accessory 10, cause product High pressure conditions on the tired surface of solids, prevent them from being removed from accessory 10.

Extend bottom inlet part 16 along the line of expected accumulation horizon 29 by changing the bottom surface 25 of accessory 10, while The side of accessory 10 is outwardly opened, to form bending enlarged 15 to certain point, be may incorporate fall sharply or ladder at that point 35, boot up sweep air flow and enter in main air flow, the main air flow is entered in accessory 10 by entrance 16.Result is to subtract Small pressure simultaneously forms the pressure differential of particle 29 relative to accumulation, its allow they remove return in main air flow and from Accessory 10 is discharged.Fall sharply or ladder 35 is attached on the bottom surface of accessory 10 and significantly improves cleaning performance.

Referring now to Fig. 9-12, can most preferably find out 90 degree of another embodiment party of connection ell with reference to the principle of the invention Formula.The connection ell is intended to for pneumatic product induction system, only by being connected to conventional inlet tube (not shown) and outlet Pipe (not shown) come utilize conveying dilute phase and interphase provide for the product travel path in pneumatic system direction change.

Preferably by durable metal material, such as aluminium, cast iron, stainless steel are formed the connection ell 110, and including entrance Part 116 and exit portion 117, each of which be sized in known manner with the inlet tube (not shown) and go out Mouth pipe (not shown) coordinates, such as by known compression coupling (not shown).In intake section 116 and exit portion 117 Between, connection ell 110 includes inlet transition 118 and similar outlet transition section 119, and it connects the intake section respectively 116 and exit portion 117.Finally, bending enlarged 112 is interconnected with the entrance and exit changeover portion 118,119.

Entrance and exit changeover portion 118,119 expands in the circular cross section of entrance and exit part 116,117 and bending Exceed between most of 112 general triangular cross-sectional configuration.The triangle for bending enlarged 112 is typically extended through Bending enlarged 112, unless needed for another side bent to from a direction on the summit 115 for bending enlarged 112 To.Preferably, preferably referring to Fig. 9, bending the triangle of the triangular cross section of enlarged 112 has three bending tops Point, it passes through straight line portion and is connected with adjacent summit, and one of them defines bottom 114, and the width that it has is more than described The diameter of entrance and exit part 116,117.

Gravity and centrifugal force law will force bulk products particle to flow outward through the connection ell 110 into the enlarged area 112, the feed pulp layer of the particle of accumulation is provided with the outside 125 along the bending enlarged 112 of connection ell 110.Due to bending The expansion transverse cross-sectional area of enlarged 112, compared to intake section 116, the speed phase of Bernoulli's theorem requirement product particle Than that will slow down in the speed of the bulk material product particle for being advanced through round entrance part 116.This layer for accumulating particle is carried The mobile impact zone of the input bulk material particles for leaving intake section 116 is supplied, then it can be upwardly toward outlet 113 deflections, to realize that the direction to conveying products changes.

The product particle of accumulation prevents accessory along the slow mobile layer 129 in the outside 125 of bending enlarged 112 110 temperature is raised, and this is commonly due to friction, impact of the friction from input bulk material particles to the outside of accessory 110. Therefore, bulk material will not be damaged because temperature is raised.

The bending enlarged 112 is preferably formed with curved outside 125, or can be by a pair for the sake of easily manufactured The linear segment 126,127 that is interconnected by bending section 129 is formed.The out of plumb of linear segment 126,127, but by about 100 degree of angular deflection is set, and its line with the input product stream by intake section 116 is about into 80 degree.Due to accumulation Product particle layer along outside 125 be used for will input bulk material product particle deflected towards exit portion 117, outside 125 is not Need as deflecting plates, it needs to be set into 55-65 degree relative to the axis of intake section 116.

Outlet transition section 119 is provided from the triangle of bending enlarged 112 to the round-shaped of exit portion 117 Seamlessly transit.Therefore, the product particle layer of accumulation is vectored back to outlet (not shown), to provide the company by connecting ell Continuous particle stream, including the outside 125 along the accessory mobile accumulation horizon.

Although above-mentioned connection ell 110 is particularly suitable for close phase or dilute-phase pneumatic Product transport system, this area It will be recognized that for realizing that the same principle that the direction of slurry Product transport system changes is also suitable.As described above Connection ell 110 provide lower drag, to realize that the direction in the bulk material product particle stream by the system changes Become.Therefore, realize that direction changes major radius elbow known to required energy ratio low.Major radius connection ell in it is known by To be substantially reduced in the damage of friction loss and impact to conveying products or connection ell.Therefore, with compared with low-energy-consumption Excellent results are related to the present invention.The exchange of the removable member 140 of connection ell 110 is capable of achieving, and without from delivery system The whole connection ell 110 of system removal, therefore escapable cost.

The downward expansion of the outer surface 125 of the connection ell 110 is preferably by the steep ladder in inlet transition 118 130 realize.The ladder 130 has inclination angle, and as most preferably seen in fig .9, it is noticeably greater than the intake section The inclination angle of about 10 degree of the bottom straight line portion 127 of the inclination angle of 116 nominal zero degree and bending enlarged 112. The formation of ladder 130 generates Bernoulli effect, it is allowed to which the product particle layer of accumulation can be along the outer surface of bending enlarged 112 Formed, but pressure differential is generated entering when the inlet flow of bulk material product particle of connection ell 110 stops, it will be along Outer surface 125 attracts the particle from accumulation horizon to enter through the air-flow of connection ell 110.Therefore, when pneumatic conveyer system is stopped Only during conveying products particle, also will effectively be cleaned by the final air stream of the product particle in the cleaned system system and come from Connect the particle of ell 110.

If not forming ladder 130, it is believed that enter the surplus products particle of the removing accessory 110 of intake section 116 Air stream, by the solid for accumulating and the rear wall 127 for clashing into accessory 110, causes product by along the base plate 126 of outer enlarged surface 125 High pressure conditions on the tired surface of solids, prevent particle from being removed from connection ell 110.

Extend bottom inlet part along the line of expected accumulation horizon by changing the bottom surface 126 of connection ell 110 116, while outwardly opening the side of accessory 110, to form bending enlarged 112 to certain point, may incorporate at that point Fall sharply or ladder 130, boot up sweep air flow and enter in main air flow, the main air flow is entered by intake section 116 In accessory 110.Result be reduce pressure and form relative to accumulation particle pressure differential, its allow they remove return Discharged in main air flow and from accessory 110.Fall sharply or ladder 130 is attached on the bottom surface of connection ell 110 and significantly improves Cleaning performance.

Moved along all of the inner surface 121 of connection ell 110 for particle, even if by expanding gable 112 significantly reduce, but the particle movement of the outer surface 125 of edge connection ell 110 still can cause some to connection ell 110 abrasion, particularly when coarse bulk material conveying is by the system.When the mill in gable 112 is expanded When damage becomes to connect the factor in the performance of ell 110, accessory 110 needs to change.Experiment is it has been shown that substantially accessory 110 Outer surface 125 in all abrasions along it is described expansion gable 112 occur, especially bending section 129 and after On wall 127, travel direction transition when wherein particle is moved from the direction of the intake section 116 to the direction of exit portion 117.

Wearing part for the ease of accessory 110 is changed, and the connection ell 110 is preferably formed to two parts：This Body portion 135, it extends and in connection from intake section 116 and exit portion 117；And removable wearing part 140, It includes bottom parts 126, rear wall section 127 and the bending section 129 interconnected with linear base plate and rear wall section 126,127. Therefore, removable wearing part 140 will suffer from the wearing character of most connection ell 110.Body part 135 and removable Separator bar 145 between the wearing part 140 for removing is located on diagonal, and it extends to outlet transition section 119 from ladder 130. With the pad 139 shown in dotted line or appropriate O-ring (not shown) along body part 135 and removable wearing part in Figure 10 Separator bar 145 between 140 is positioned, with sealed separation line 145.

Accessory 110 is provided with mounting flange 142, with the Part I 143 for being formed as body part 135 and be formed as can The wearing part 140 of removal is coordinating the Part II 144 against Part I 143.Two parts 143 of mounting flange 142, 144 can be bonded together by the fastener (not shown) that can be removed.When being clamped together, two parts of mounting flange 142 143, the 144 precision machined separator bars 145 of orientation, the movement of its product particle layer to accumulation and positioning effects are minimum, because Only engagement is closed on ladder 130 and closes on the separator bar 145 of rear wall 127 by the accumulation horizon of particle.

In order to change wearing part 140, the fastener that the part 143,144 of mounting flange 142 is clamped together is removed, And removable wearing part 140 can be unloaded from body part 135, and body part 135 remains connected to pneumatic conveying On system (not shown), so that entirely connection ell 110 need not be removed from pneumatic conveyer system.Then, new removable mill Damaging part 140 can be pressed from both sides by coordinating the part 143,144 of mounting flange 142 and reconnecting the fastener with along separator bar 145 Pad 139 is held to install.Because connection ell 110 is not interfered with the connection of pneumatic conveyer system, it is possible to achieve abrasion The replacing of part 140, while minimizing the interruption to pneumatic conveyer system operation.

Once removable wearing terrain 140 is provided on connection ell 110 also by wearing terrain 140 from accessory 110 Remove and access the entrance and exit part 116 being maintained in body part 135,117 and provide cleaning connection ell 110 The ability of internal and connecting pipings.Additionally, removable wearing terrain 140 can be made up of the material different from body part 135, To improve the wearability of wearing terrain 140, or provide other operating advantages, without whole connection ell 110 by Formed with the replaceable identical material of wearing terrain 140.

For example, being used for the application that mineral matter is conveyed for connection ell 110, the pole in connection ell 110 is especially to provide Holding the mineral matter of abrasive conditions, replaceable wearing terrain 140 can be made up of carbon steel, to provide enhanced antiwear characteristic, and originally Body portion is made up of hardened steel.Because carbon steel is more more expensive than hardened steel, only with the replaceable wearing terrain 140 formed by carbon steel Connection ell 110 cost will than need it is whole connection ell be made up of carbon steel it is less expensive.As described above, replaceable wear Part 140 and without discard body part 135, this in wear applications high provide significant cost savings.

As another embodiment, connection ell 110, such as food and medicine industry purposes are used in hygiene applications In, whole connection ell 110 will be made of stainless steel；However, the ability for removing removable wearing terrain 140 is allowed in use Whole pneumatic conveying line is cleaned to keep its sanitary condition, without dismantling whole pipeline.By removing wearing terrain 140, operator may have access to the both direction of pipeline for cleaning purpose.For the connection ell provides internal electropolishing processing The finish close to minute surface is formd on the inside of connection ell 110, it is almost eliminated in connection ell 110 for material Any porous zone collected.

It will be understood that having described and having illustrated on details, material, step and arrangements of components to explain property of the present invention Change will occur, and can by those skilled in the art read the present invention after be done in the principle and scope of the present invention Go out.Description above illustrates the preferred embodiment of the present invention；However, the concept based on the description can be in other embodiment It is middle to use without deviating from the scope of the present invention.

Claims (5)

1. it is used to realize the connection ell that the direction in pneumatic product induction system from inlet tube to outlet changes, including：

The inlet tube is may be connected to receive the round entrance part of resultant product particle stream；It is connected to the entrance The inlet transition of the non-circular cross sections of expansion partly and from circular cross section is expanded to, the non-circular cross sections have Outside width size, its diameter dimension for being more than the intake section；

It is connected to the inlet transition and extends the non-circular cross sections of the expansion by the bending expansion section of angular deflection Point, the bending enlarged is extended to the radially outward side of the connection ell in depth, logical from the inlet transition The ladder crossed on the radially outward side of the connection ell, the bending enlarged with relative to the inlet transition and The inlet tube it is linear and keep it is described connection ell radially-inwardly side；

The outlet transition section of the bending enlarged is connected to, to reduce the non-circular cross sections of the expansion to the circle Cross section；And

With the circular cross section and the exit portion that is connected on the outlet transition section, the exit portion can also be even It is connected on the outlet and is transported in the outlet with by the product particle stream.

2. connection ell according to claim 1, wherein the ladder defines the company limited by an inclination angle Falling sharply on the radially outward side of ell is connect, the inclination angle is substantially greater than the inlet transition and the bending is expanded Most corresponding inclination angle.

3. connection ell according to claim 2, wherein the outlet transition section has ramp portion, it is in the connection Provided on the radially outward side of ell from the bending enlarged to by the corresponding inclination angle less than the ladder The exit portion that inclination angle limits is seamlessly transitted.

4. connection ell according to claim 3, wherein the radially-inwardly side of the connection ell is defined from institute State the smooth circular that intake section bends to the exit portion.

5. connection ell according to claim 3, wherein the ladder is imitated in the inlet transition there is provided Bernoulli Jacob Should, to influence the pressure differential in the bending enlarged, so as to stop when by the product particle stream of the connection ell When only, along the particle that radially outward side accumulates in the bending enlarged described in the connection ell from the connection elbow Pipe is discharged.