CN109854497A - A kind of three screw rod labyrinth seals cutting liquid pump - Google Patents
A kind of three screw rod labyrinth seals cutting liquid pump Download PDFInfo
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- CN109854497A CN109854497A CN201910029034.6A CN201910029034A CN109854497A CN 109854497 A CN109854497 A CN 109854497A CN 201910029034 A CN201910029034 A CN 201910029034A CN 109854497 A CN109854497 A CN 109854497A
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- end cap
- labyrinth seal
- screw rod
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Abstract
A kind of three screw rod labyrinth seals cutting liquid pump, end cap and intermediate shell including both ends, both ends end cap one end is the common flange end cap for connecting motor, the other end is the radial oil suction end cap far from motor, casing center is laid with shaft along axial direction, its main feature is that: the cutting fluid is the cutting fluid of 95% water and 5% oil, the casing center is three screw rotor of repairing type along the shaft axially laid, lengthening labyrinth seal groove is provided in the driving screw rod of three screw rotor of repairing type, labyrinth seal flange end cap matched with the lengthening labyrinth seal groove is equipped between common flange end cap and shell.The present invention is by changing labyrinth seal groove location, increasing labyrinth seal slot length, carry out anti-get rusty and Wear-resistant Treatment to three nut stem materials, and this three is organically combined, interdependence, solve the problems, such as that cutting fluid pump volumetric efficiency not can be further improved for a long time, the volumetric efficiency of liquid pump will be cut by 40%-50%, it is increased to 70%, domestic and international historical record is created, domestic and international blank has been filled up.
Description
Technical field
The invention belongs to cutting fluid pump technical fields, more particularly to a kind of three screw rod labyrinth seals to cut liquid pump.
Background technique
The widely used cutting liquid pump of industrial circle is broadly divided into two kinds at present, and one is the vane types that most people uses
The core work component of centrifugal pump, vane pump is not rotor but impeller, and the impeller in vane pump is open type setting without sealing
It closes, therefore volumetric efficiency is generally relatively low, is only capable of reaching 60% or so when volumetric efficiency is high, generally can only achieve 40-50%,
And working speed is higher, and low speed when, cannot work, and this vane pump is commonly referred to as the pump of velocity profile, it is necessary to by height
The mechanical energy of impeller is converted to the kinetic energy of fluid by revolving speed, to realize the function of trandfer fluid.Another kind cutting liquid pump is spiral shell
Bar pump, screw pump is a kind of pump of positive displacement, realizes conveying function by periodically purging out the closed volume of pump chamber.Spiral shell
The advantage first of bar pump comparison impeller pump is that the range of speeds is very big, and very low revolving speed can also work normally, and reach impeller pump
Volumetric efficiency when high speed；Second is that screw rod pump discharge pressure is larger, usually higher than the pump discharge pressure of vane type.
Although screw rod pump discharge pressure is big, the prior art still could not reach ideal using the volumetric efficiency of screw pump
Effect: it generally can only achieve 50% volumetric efficiency.Such as application number 201320777841.4, utility model title: hydraulic control peculiar to vessel
System high pressure three screw pump, the method which uses labyrinth seal and mechanical seal to combine, figure label 15 are fan
Palace sealing, as seen from the figure, which has three, first, the setting of labyrinth seal position is axially outermost in the pump housing
Side, that is, labyrinth seal are arranged in axial front end, do not reveal completely since labyrinth seal does not ensure that, once labyrinth is close
Sealing groove is suppressed, and liquid will leak into the outside of the pump housing from labyrinth seal groove；Second, due to the labyrinth seal of the prior art
Slot is built-in in sealing cover (common flange end cap), and labyrinth seal slot length is limited by sealing cover thickness, so that existing
There are slot number or the length of technology screw pump labyrinth seal groove all shorter, and the slot number of labyrinth seal groove is few or length not enough understands shadow
Ring the effect of sealing；Third, the tooth root of prior art screw pump rotor, tooth top are concentric circles, it is same as locating for tooth top and tooth root
The radius of heart circle is different, therefore tooth top and tooth root cannot be at a fully engaged, since tooth top and tooth root cannot be at a fully engaged, cause liquid
A part remains in tooth root, and liquid can not be fully drained, and influences the volumetric efficiency of screw pump.
Summary of the invention
In view of the deficienciess of the prior art, the present invention proposes a kind of three screw rod labyrinth seals cutting liquid pump, it is therefore intended that
Solution screw pump leaked liquid, labyrinth seal slot length is limited by sealing cover, screw rod cross section tooth top tooth root cannot be nibbled completely
Conjunction causes the low problem of volumetric efficiency.
The present invention is to solve its technical problem, proposes following technical scheme:
A kind of three screw rod labyrinth seals cutting liquid pump, end cap and intermediate shell including both ends, both ends end cap one end is
Connect the common flange end cap of motor, the other end is the radial oil suction end cap far from motor, common flange end cap and radial oil suction
It is shell between end cap, casing center is laid with shaft along axial direction, and surface of shell is provided with out close to common flange end cap one end
Oilhole, its main feature is that: the cutting fluid is the cutting fluid of 95% water and 5% oil, and the casing center is along the shaft axially laid
For three screw rotor of repairing type, it is provided in the driving screw rod of three screw rotor of repairing type and lengthens labyrinth seal groove, in common flange
Labyrinth seal flange end cap matched with the lengthening labyrinth seal groove is equipped between end cap and shell.
Three screw rotor of repairing type includes the slave screw rod of intermediate driving screw and both sides, the driving screw diameter be greater than from
Screw diameter；The tooth top of the three each tooth in screw rod cross section of repairing type, the circular arc of tooth root are two circular arcs that can be at a fully engaged,
The center of circle of two at a fully engaged circular arcs and the gear center of circle are non-concentric；The circle of the three screw rod cross section tooth top of repairing type helical gear
The heart, tooth root the center of circle can according to need and be laid on the position less than gear radius, and the respective circular arc institute of tooth top and tooth root
Corresponding two round lines are identical.
Three screw rod of repairing type uses the alloy material of antirust, thermally treated, wear-resistant.
The labyrinth seal flange end cap is socketed in driving screw and lengthens on the outer ring of labyrinth seal groove, and the lengthening labyrinth is close
The position and length of position of the sealing groove on driving screw and length and labyrinth seal flange end cap on driving screw match；The fan
Palace sealing flange end cap is axially disposed big outer diameter and small outer diameter two parts, and big overall diameter is identical with the internal diameter of small overall diameter；
Large outer-diametric portion with common flange end cap for being connected, and small outer-diametric portion is for extending labyrinth seal channel.
The labyrinth seal large outer-diametric portion is connected by bearing and screw with common flange end cap, the bearing axially divides
Be not connected across two it is opposite and on the respective bearing step of common flange end cap and labyrinth seal flange end cap that sets.
The end face that the large outer-diametric portion is connected with common flange end cap be equipped with along radial direction it is ascending, by outer
Two steps being recessed inwardly, first step ascending along end face radial direction are that diameter is relatively small, recess is relatively deep
Step, the step be used for install connect labyrinth seal end cap and common flange end cap bearing；Along end face radial direction by small
It is the step that diameter is relatively large, recess is relatively shallow to second big step, the step is for installing connection labyrinth seal end cap
With the O-ring seal of common flange end cap.
Be again provided on the end face that the common flange end cap is connected with large outer-diametric portion it is ascending along radial direction, by
Two steps of export-oriented sunken inside, first step ascending along end face radial direction are that diameter is relatively small, recess is opposite
Deep step, the step are sealed for mounting framework；Second step ascending along end face radial direction is that diameter is opposite
Greatly, be recessed relatively shallow step, which is used to install the bearing of connection universal flange end cap and labyrinth seal end cap.
The water conservancy diversion through axial two end faces of big outer diameter portion is also provided on the first step of the large outer-diametric portion
Hole, the deflector hole connect diversion pipe on the end face that big outer diameter portion and small outer diameter portion connect, and the diversion pipe is far from institute
State the flow-guiding channel of one end connection shell of the end face to connect；It is leaked between common flange end cap and labyrinth seal flange end cap
Liquid by deflector hole, diversion pipe, flow-guiding channel reflux be expelled in the radial oil suction lid of shell the other end.
The deflector hole through axial two end faces of big outer diameter portion is non-coaxial oblique two opened up deflector hole,
The diameter that one hole is provided with the big outer diameter portion first step is inwardly surveyed, another hole is provided with small outer diameter portion and big
The radial outside relative to first step that outer diameter portion connects.
The labyrinth seal groove is the labyrinth seal groove directly processed on driving screw, is not pacified on driving screw
Fill individual labyrinth seal.
Advantages of the present invention effect
1, the present invention passes through the labyrinth seal end cap of lengthening labyrinth seal groove and design specialized on design driving screw,
By common flange end cap and labyrinth seal flange end cap being separately independently operated, on cutting liquid pump so that labyrinth seal groove
Length is not limited by common flange ending cover thickness, so that the length of labyrinth seal groove is designed as needed, so that labyrinth seal
The total length of slot can double above, and liquid also increases one times or more along the resistance that driving screw is revealed.
2, the present invention by using the anti-alloy to get rusty as three nut stem materials, and by being heat-treated, being increased to material
Add the wearability of material, so that oil can only be used as the screw rod of working media originally, when it is used for the cutting liquid pump of 95% water,
Also it can reach the abrasion resistant effect of oil solution and prevent effect of getting rusty.
3, the present invention increases leakage-preventing triple protection mechanism by changing the installation position of labyrinth seal groove: first,
Be arranged on the common flange end cap of pump housing end by labyrinth seal, be improved to be laid in the inside of the common flange end cap or after
End, so that the road of liquid leakage lengthens or resistance increases；Second, while water conservancy diversion is set in the outlet of labyrinth seal tank liquid
Hole also can flow back into rear end from deflector hole even if there is a small amount of liquid from the common flange end cap that the outlet leaks to front end
Oil suction lid in, while the front end of deflector hole, common flange end cap first step in a reinforced seal is set again, more
Reduce a possibility that liquid is revealed from common flange end cap；Third, common flange end cap and labyrinth seal flange end cap it
Between an O-ring seal is set again, to further block liquid from the outlet that common flange end cap leaks.According to the above institute
It states, due to changing the position of labyrinth seal groove, increases the triple protection means of liquid tight sealed engagement, extend liquid outflow
Channel and the resistance for increasing liquid outflow, thus a possibility that thoroughly having prevented leaked liquid.
4, the present invention is by changing labyrinth seal groove location, increase labyrinth seal slot length, preventing three nut stem materials
It gets rusty and Wear-resistant Treatment, and this three is organically combined, mutually supports, interdepend, solve and cut liquid pump for a long time
The problem that volumetric efficiency not can be further improved is increased to 70%, creates state by the volumetric efficiency for cutting liquid pump by 40%-50%
Inside and outside historical record has filled up domestic and international blank.
Detailed description of the invention
Fig. 1 is that liquid pump outline drawing is cut in the labyrinth seal of the present embodiment three screw pump；
Fig. 2 is the present embodiment three screw pump labyrinth seal cutting fluid pump case outline drawing；
Fig. 3 is that liquid pump radial direction oil suction lid outline drawing is cut in the labyrinth seal of the present embodiment three screw pump；
Fig. 4 is three screw rod schematic diagram of the present embodiment；
Fig. 5 is the present embodiment driving screw schematic diagram；
Fig. 6 is that the first visual angle of liquid pump internal structure figure is cut in the labyrinth seal of the present embodiment three screw pump；
Fig. 7 is the first visual angle of the present embodiment labyrinth seal flange end cap figure；
Fig. 8 is the second visual angle of the present embodiment labyrinth seal flange end cap figure；
Fig. 9 is that the second visual angle of liquid pump internal structure figure is cut in the labyrinth seal of the present embodiment three screw pump；
Figure 10 is the present embodiment common flange end cap schematic diagram.
In figure, 1: common flange end cap；1-1: first step；1-2: second step；1-3: reinforced seal；1-4: fixed
Screw；2: shell；2-1: fixedly connected hole；2-2: flow-guiding channel；2-3: oil outlet；3: radial oil suction lid；3-1: oil-sucking hole；3-
2: fixedly connected hole；4: labyrinth seal flange end cap；4-1: big outer diameter portion；4-2: small outer diameter portion；4-1-1: the first
Step；4-1-2: second step；4-1-3-1: deflector hole；4-1-3-2: deflector hole；4-3: bearing；5-1: driving screw rod rotor；
5-1-1: labyrinth seal groove is lengthened；5-2: driven screw rotor；5-3: driven screw rotor.
Specific embodiment
Design principle of the present invention
1, labyrinth seal groove design principle is lengthened.Traditional labyrinth seal groove is generally laid in the flange end cap of the pump housing,
It is exactly laid in the end of pump housing axial direction, is limited by common flange ending cover thickness so that traditional labyrinth seal slot length all compares
Shorter, obstruction liquid leakage road is shorter, thus sealing effect is restricted.The present invention is between end cover and shell
A labyrinth seal groove flange end cap is increased, which is specifically for the length for increasing labyrinth seal groove
Degree and design, which is twice of common flange end cap length, including big outer diameter portion and small overall diameter
Part, medium and small outer diameter portion length are to grow the part of common flange end cap.Due to labyrinth seal groove flange end of the present invention
The special designing of lid allows the length of labyrinth seal groove to be designed long enough.Since labyrinth seal slot length increases one
Again, the road that liquid is obstructed doubles, and sealing effect also increases one times.
2, triple protection anti-leak principle.Traditional labyrinth seal groove is laid in the end of the pump housing, once liquid leakage without
Method is saved, and the present invention is provided with triple protection structure, and first layer protection is the labyrinth seal flange between two flange end caps
End face is provided with deflector hole, the deflector hole downwards it is oblique opens up, convenient for by the liquid between two flange end caps stop not followed by
The continuous endwall flow towards the pump housing, but along gravity direction and return direction and be finally flowed into oil suction along shell flow-guiding channel
In hole；Second layer protection mechanism is that O-ring seal is laid between two flange end caps, and O-ring seal is laid in two methods
On the second step that orchid is recessed inwardly；Third layer protection mechanism is the of the flange end cap opposite with labyrinth seal flange end cap
Reinforced seal is laid on one step being recessed inwardly, the outlet of the liquid outflow pump housing has further been blocked in reinforced seal.
3, three screw design principle of repairing type.The radian of the tooth top of common screw cross section and tooth root be on concentric circles Bu Tong partly
Radian corresponding to diameter, since the radius of tooth top, tooth root on concentric circles is different, two radians of tooth top and tooth root can not
It is at a fully engaged.Circular arc corresponding to the tooth top tooth of each screw rod cross section of three screw rod of repairing type of the invention is not the circle on concentric circles
Arc, but the circular arc of non-concentric, tooth top and two non-concentric corresponding to tooth root are that radius is equal, size is identical in other words
Two circles, therefore the circular arc on the circles such as two can it is at a fully engaged together.Due to the tooth top and tooth root of repairing type three screw rod
Two circular arcs can be at a fully engaged, therefore, very high outlet pressure can be reached in the case where speed is very low.
4, material processing principle.Prior art screw pump generally carries out pressure push using oil, imitates since oil solution lubricates
Fruit is very well and anti-effect of getting rusty is fine, therefore there is no increase wearability and anti-problem of rustiness.Screw rod is used for 95% by the present invention
The cutting liquid pump of water, although the outlet pressure of pump can be improved largely, the viscosity of water is very low, unlike the viscosity of oil
High and oil has lubricant effect and anti-effect of getting rusty, thus screw rod with water come abrasion can be than with oil when conveying when it is more serious,
Screw rod also gets rusty easily simultaneously, if wear-resistant and anti-both of these problems of getting rusty cannot be resolved, just will affect screw cutting liquid
The service life of pump.The present invention uses following methods in material processing, first, material using alloy material rather than clean steel
Material, and alloy material is the anti-alloy material to get rusty rather than general alloy material.Second, material is heat-treated,
Hardness is enhanced, it is more wear-resistant.
Based on principles above, the present invention devises a kind of three screw rod labyrinth seals cutting liquid pump.
A kind of three screw rod labyrinth seals cutting liquid pump is as shown in Figure 1, Figure 2, Figure 3 shows, end cap and intermediate shell including both ends
Body, both ends end cap one end is that common flange end cap 1, the other end of connection motor are the radial oil suction end cap 3 far from motor, general
It is shell 2 between flange end cap 1 and radial oil suction end cap 3, casing center is laid with shaft along axial direction, and 2 surface of shell is close to logical
Flange end cap one end is provided with oil outlet 2-3 (as shown in Figure 2), its main feature is that: the cutting fluid is 95% water and 5% oil
Cutting fluid, the casing center is three screw rotor of repairing type, the active of three screw rotor of repairing type along the shaft axially laid
It is provided on screw rod 5-1 and lengthens labyrinth seal groove 5-1-1, be equipped with and lengthening fan between common flange end cap 1 and shell 2
The matched labyrinth seal flange end cap 4 of palace seal groove 5-1-1.
As shown in Figure 4, Figure 5, three screw rotor of repairing type includes the slave screw rod (5- of intermediate driving screw 5-1 and both sides
2,5-3), the driving screw 5-1 diameter is greater than from screw rod (5-2,5-3) diameter；The three each tooth in screw rod cross section of repairing type
Tooth top, tooth root circular arc be can be at a fully engaged two circular arcs, the centers of circle of two at a fully engaged circular arcs and the gear center of circle
It is non-concentric；The center of circle of the three screw rod cross section tooth top of repairing type helical gear, the center of circle of tooth root can according to need to be laid in and be less than
On the position of gear radius, and tooth top is identical with two round lines corresponding to tooth root respectively circular arc.
Three screw rod of repairing type uses the anti-alloy material to get rusty, thermally treated, wear-resistant.
As shown in Figure 5, Figure 6, the labyrinth seal flange end cap 4 be socketed in driving screw lengthen labyrinth seal groove (such as
The 5-1-1 of Fig. 5) on outer ring, position and length and labyrinth seal method of the lengthening labyrinth seal groove 5-1-1 on driving screw 5-1
Position and length of the blue end cap 4 on driving screw match；
As shown in Figure 7, Figure 8, the labyrinth seal flange end cap is axially disposed big outer diameter 4-1 and small outer diameter 4-2 two
Point, big overall diameter is identical with the internal diameter of small overall diameter；As shown in fig. 6, large outer-diametric portion 4-1 is used for and 1 phase of common flange end cap
Connection, small outer-diametric portion 4-2 is for extending labyrinth seal channel.
As shown in figure 9, the labyrinth seal large outer-diametric portion 4-1 passes through bearing 4-1-4 and screw 4-1-5 and general method
The common flange end cap and labyrinth seal method that blue end cap 1 is connected, bearing 4-1-4 is axially connected across two relatively respectively and sets
On the blue respective bearing step of end cap (4-1-1 of 1-2, Fig. 7 of Figure 10).
As shown in Fig. 7, Fig. 9, the end face that the large outer-diametric portion 4-1 and common flange end cap 1 connect is equipped with along radius
Two steps that direction is ascending, ecto-entad is recessed, the first step 4-1-1 ascending along end face radial direction are
The step that diameter is relatively small, recess is relatively deep, the step are used to install the axis of connection labyrinth seal end cap and common flange end cap
Hold 4-3；The second step 4-1-2 ascending along end face radial direction is the step that diameter is relatively large, recess is relatively shallow, should
Step is used to install the O-ring seal of connection labyrinth seal end cap and common flange end cap.
As shown in Figure 9, Figure 10, edge is again provided on the end face that the common flange end cap 1 is connected with large outer-diametric portion 4-1
Radial direction is ascending, ecto-entad sunken inside two steps, first step ascending along end face radial direction
1-1 is the step that diameter is relatively small, recess is relatively deep, which seals 1-3 for mounting framework；Along end face radial direction by small
It is the step that diameter is relatively large, recess is relatively shallow to second big step 1-2, the step is for installing connection universal flange end
The bearing 4-3 of lid and labyrinth seal end cap.
As shown in Fig. 2, Fig. 6, Fig. 7, Fig. 8, it is also provided with and runs through on the first step 4-1-1 of the large outer-diametric portion 4-1
The deflector hole (4-1-3-1,4-1-3-2) of axial two end faces of big outer diameter portion, the deflector hole is in big outer diameter portion and small
Diversion pipe (4-1-3-3 of such as Fig. 6) is connected on the end face that outer diameter portion connects, diversion pipe 4-1-3-3 is far from deflector hole 4-
The flow-guiding channel 2-2 (2-2 of such as Fig. 2) of one end connection shell of 1-3-2；In common flange end cap 1 and labyrinth seal flange end
The liquid leaked between lid 4 passes through deflector hole (4-1-3-1,4-1-3-2), diversion pipe 4-1-3-3, flow-guiding channel 2-2 reflux row
Out in the radial oil suction lid 3 of shell the other end.
As shown in Figure 7, Figure 8, deflector hole (4-1-3-1, the 4-1-3- through axial two end faces of big outer diameter portion
It 2) is non-coaxial oblique two opened up deflector hole, a hole is provided with the big outer diameter portion 4-1 first step 4-1-1's
Diameter is inwardly surveyed, another hole 4-1-3-2 be provided with that small outer diameter portion connects with big outer diameter portion relative to first step
Radial outside.
As shown in Figure 4, Figure 5, the labyrinth seal groove 5-1-1 is the labyrinth directly processed on driving screw 5-1
Seal groove, without installing individual labyrinth seal on driving screw.
Experimental data of the present invention is as follows:
1, following table is first is that improve pervious experimental data, and table is second is that improved experimental data.
2, in actual use, liquid pump is cut in order to reach preferable cooling and lubricating effect, and timely and effectively wash away chip,
Usually require that pressure reaches 70bar or more, pressure is bigger, and flushing effect is better；
3, calibrational capacity: calibrational capacity be close to pressure be 0 when flow, table one, table two calibrational capacity be 50；
4, ideally, when pressure reaches maximum such as 70bar, rate of discharge/calibrational capacity ratio it is more big more
It is good.
5, before improving, when pressure is 70bar, rate of discharge 21L/min, rate of discharge/calibrational capacity ratio
It is 42%, effect is undesirable.Before improvement: being not provided with labyrinth seal, three screw rods are non-three screw rod of repairing type, shell is directly connected to lead to
With flange end cap, it is not provided with dedicated labyrinth seal flange end cap.
6, table is second is that improved experimental data, when pressure is 70, rate of discharge rises to 41 L/min by 21, outlet
Flow/calibrational capacity ratio is up to 82%, improves by about one time, and effect is clearly.
One, pervious experimental data is improved
Table one
The test of remarks/Note 1. uses ISO VG46 lubricating oil.2. at least testing 8 groups of data, overflow valve surveys two after opening
Group.Two, later experimental data is improved
Table two
It is emphasized that embodiment of the present invention be it is illustrative, without being restrictive, therefore packet of the present invention
It includes and is not limited to embodiment described in specific embodiment.
Claims (10)
1. liquid pump is cut in a kind of three screw rod labyrinth seals, end cap and intermediate shell including both ends, both ends end cap one end is to connect
Connect the common flange end cap of motor, the other end is the radial oil suction end cap far from motor, common flange end cap and radial oil absorbing end
It is shell between lid, casing center is laid with shaft along axial direction, and surface of shell is provided with fuel-displaced close to common flange end cap one end
Hole, it is characterised in that: the cutting fluid is the cutting fluid of 95% water and 5% oil, and the casing center is along the shaft axially laid
For three screw rotor of repairing type, it is provided in the driving screw rod of three screw rotor of repairing type and lengthens labyrinth seal groove, in common flange
Labyrinth seal flange end cap matched with the lengthening labyrinth seal groove is equipped between end cap and shell.
2. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 1, it is characterised in that: three screw rod of repairing type turns
Attached bag includes the slave screw rod of intermediate driving screw and both sides, and the driving screw diameter is greater than from screw diameter；Three screw rod of repairing type
The tooth top of each tooth in cross section, the circular arc of tooth root are two circular arcs that can be at a fully engaged, two at a fully engaged circular arcs
The center of circle and the gear center of circle are non-concentric；The center of circle of the three screw rod cross section tooth top of repairing type helical gear, tooth root the center of circle can basis
It needs to be laid on the position less than gear radius, and tooth top is identical with two round lines corresponding to tooth root respectively circular arc.
3. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 1, it is characterised in that: three screw rod of repairing type is adopted
It is thermally treated with the alloy material of antirust, it is wear-resistant.
4. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 1, it is characterised in that: the labyrinth seal method
Blue end cap is socketed in driving screw and lengthens on the outer ring of labyrinth seal groove, position and length of the lengthening labyrinth seal groove on driving screw
It spends and is matched with position of the labyrinth seal flange end cap on driving screw and length；The labyrinth seal flange end cap is axially disposed
There are big outer diameter and small outer diameter two parts, big overall diameter is identical with the internal diameter of small overall diameter；Large outer-diametric portion is used for and common flange
End cap is connected, and small outer-diametric portion is for extending labyrinth seal channel.
5. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 4, it is characterised in that: the labyrinth seal is outer greatly
Path portion is connected by bearing and screw with common flange end cap, the bearing is axially connected across two respectively and leads to respect to what is set
With in flange end cap and the respective bearing step of labyrinth seal flange end cap.
6. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 4, it is characterised in that: the large outer-diametric portion and
The end face that common flange end cap is connected is equipped with two steps of ecto-entad recess ascending along radial direction, along end
First ascending step of radius surface direction is the step that diameter is relatively small, recess is relatively deep, and the step is for the company of installation
Connect the bearing of labyrinth seal end cap and common flange end cap；Second step ascending along end face radial direction is diameter phase
To step big, that recess is relatively shallow, which is used to install the O-shaped sealing of connection labyrinth seal end cap and common flange end cap
Circle.
7. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 4, it is characterised in that: the common flange end cap
Two steps of ecto-entad recess ascending along radial direction, edge are again provided on the end face connected with large outer-diametric portion
First ascending step of end face radial direction is the step that diameter is relatively small, recess is relatively deep, and the step is for installing
Reinforced seal；Second step ascending along end face radial direction is the step that diameter is relatively large, recess is relatively shallow, this
Rank is used to install the bearing of connection universal flange end cap and labyrinth seal end cap.
8. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 6, it is characterised in that: the large outer-diametric portion
The deflector hole through axial two end faces of big outer diameter portion is also provided on first step, the deflector hole is in big outer diameter portion
Diversion pipe is connected on the end face to connect with small outer diameter portion, one end connection shell of the diversion pipe far from the end face to connect
Flow-guiding channel；The liquid leaked between common flange end cap and labyrinth seal flange end cap passes through deflector hole, diversion pipe, leads
Circulation road reflux is expelled in the radial oil suction lid of shell the other end.
9. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 8, it is characterised in that: described to run through big overall diameter
The deflector hole of axial two end faces in part is non-coaxial oblique two opened up deflector hole, and a hole is provided with the big overall diameter
The diameter of part first step is inwardly surveyed, another hole be provided with that small outer diameter portion connects with big outer diameter portion relative to
The radial outside of one step.
10. liquid pump is cut in a kind of three screw rod labyrinth seals according to claim 1, it is characterised in that: the labyrinth seal
Slot is the labyrinth seal groove directly processed on driving screw, and individual labyrinth seal is not installed on driving screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910029034.6A CN109854497B (en) | 2019-01-12 | 2019-01-12 | Three-screw labyrinth seal cutting fluid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910029034.6A CN109854497B (en) | 2019-01-12 | 2019-01-12 | Three-screw labyrinth seal cutting fluid pump |
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| Publication Number | Publication Date |
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| CN109854497A true CN109854497A (en) | 2019-06-07 |
| CN109854497B CN109854497B (en) | 2020-04-28 |
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| CN201910029034.6A Active CN109854497B (en) | 2019-01-12 | 2019-01-12 | Three-screw labyrinth seal cutting fluid pump |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2811603Y (en) * | 2005-07-11 | 2006-08-30 | 天津泵业机械集团有限公司 | High pressure three-screw pump |
| CN203655618U (en) * | 2013-12-19 | 2014-06-18 | 黄山工业泵制造有限公司 | High-performance high-pressure three-screw pump |
| CN203685559U (en) * | 2013-11-28 | 2014-07-02 | 天津泵业机械集团有限公司 | High-pressure three-screw pump of hydraulic control system for ships |
| CN105240271A (en) * | 2015-10-13 | 2016-01-13 | 繁昌县金科机电科技有限公司 | Three-screw pump lining |
| CN106122000A (en) * | 2016-08-26 | 2016-11-16 | 黄山艾肯机械制造有限公司 | A kind of screw pump assembly of hydro-cushion |
| CN106194719A (en) * | 2016-08-26 | 2016-12-07 | 黄山艾肯机械制造有限公司 | A kind of screw pump of low viscosity high pressure |
-
2019
- 2019-01-12 CN CN201910029034.6A patent/CN109854497B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2811603Y (en) * | 2005-07-11 | 2006-08-30 | 天津泵业机械集团有限公司 | High pressure three-screw pump |
| CN203685559U (en) * | 2013-11-28 | 2014-07-02 | 天津泵业机械集团有限公司 | High-pressure three-screw pump of hydraulic control system for ships |
| CN203655618U (en) * | 2013-12-19 | 2014-06-18 | 黄山工业泵制造有限公司 | High-performance high-pressure three-screw pump |
| CN105240271A (en) * | 2015-10-13 | 2016-01-13 | 繁昌县金科机电科技有限公司 | Three-screw pump lining |
| CN106122000A (en) * | 2016-08-26 | 2016-11-16 | 黄山艾肯机械制造有限公司 | A kind of screw pump assembly of hydro-cushion |
| CN106194719A (en) * | 2016-08-26 | 2016-12-07 | 黄山艾肯机械制造有限公司 | A kind of screw pump of low viscosity high pressure |
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| CN109854497B (en) | 2020-04-28 |
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Address after: 301899 No. 1, Tianxing Road, energy conservation and environmental protection industrial zone, Baodi District, Tianjin Patentee after: Hailink hydraulic technology (Tianjin) Co.,Ltd. Address before: 301899 No. 1, Tianxing Road, energy conservation and environmental protection industrial zone, Baodi District, Tianjin Patentee before: JINMAISI HYDRAULIC EQUIPMENT (TIANJIN) CO.,LTD. |
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