CN102507878A - Pressing rate testing device - Google Patents
Pressing rate testing device Download PDFInfo
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- CN102507878A CN102507878A CN2011103758417A CN201110375841A CN102507878A CN 102507878 A CN102507878 A CN 102507878A CN 2011103758417 A CN2011103758417 A CN 2011103758417A CN 201110375841 A CN201110375841 A CN 201110375841A CN 102507878 A CN102507878 A CN 102507878A
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Abstract
The invention relates to a pressing rate testing device. A tubular hollow permeable cylinder is place on a horizontal bottom plate. The permeable cylinder is formed in a mode that an inner cylinder and an outer cylinder are sleeved. Both upper and lower ends of the permeable cylinder are open ends. The inner cylinder is provided with a filter screen cylinder wall. The outer cylinder is provided with a steel plate cylinder wall which is uniformly provided with permeable holes. A columnar bottom plug is arranged inside the lower end of the permeable cylinder. A material to be tested is filled above the bottom plug. A columnar top plug is covered on the material to be tested. The top plug is positioned in the permeable cylinder. A top plate is placed in parallel to the bottom plate and above the permeable cylinder. Supporting screw rods are vertically configurated between the top plate and the bottom plate. Nuts are arranged in the supporting screw rods. The lower ends of the supporting screw rods are fixed on the bottom plate. The upper ends of the supporting screw rods pass through the top plate. The top plate is arranged on the nuts. A compressing cylinder is vertically fixed on the top plate. A cylinder piston rod passes through the top plate downwards. A pressing head is fixed at the lower end of the piston rod. The pressing head is aligned with the top plug in the permeable cylinder. One device can be utilized to complete testing of a pressing rate of the material under the conditions of different pressure values and different container through hole rates only by replacing the inner cylinder and the regulating a pressure regulating valve, and is convenient to use.
Description
Technical field
The present invention relates to a kind of proving installation, relate in particular to the press ratio test.
Background technology
Press ratio representes that material discharges the free moisture content ability of volumetric contraction simultaneously under pressure, is that material is at the ratio of controlled condition lower compression front volume with compression back volume.In the research and development of pressure dehydration equipment, the material press ratio is the important parameter of design, like the pitch design of spiral dewater, the push rod stroke design of half frame pressure filter, the top wheel design of belt filter press etc.Whether its parameter rationally is directly connected to the production capacity of equipment.Have a wide range of applications in feed, medicine, chemical industry, environmental protection field.
Lack at present special-purpose press ratio testing apparatus in the industry, the designer often rule of thumb or simple and easy experiment judge and often differ greatly the press ratio of material, thereby make equipment can not give full play to efficiency with actual.And material press ratio under different pressures and through-hole rate condition is different, as wants test of many times certainly will take the very big energy time.Therefore develop press ratio special test device, can technical support be provided for design difficulty, the raising equipment capacity that reduces the designer.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of can test the device of material press ratio fast and accurately under the condition of different pressures value, different through-hole rates.
The present invention realizes through following technical scheme:
A kind of press ratio proving installation is characterized in that:
On horizonal base plate, shelve the permeable tube of hollow of a tubular, permeable tube is formed by inside and outside jacket casing dress, and upper and lower end all is an openend, and inner core is the filter screen barrel, and urceolus is a tunnel wall of steel plate of evenly offering permeable hole,
The permeable tube lower end cylindricality bottom plug of packing into, material to be measured is filled in the bottom plug top, and material to be measured top covers the top plug of cylindricality, and the top plug is positioned at permeable tube, between bottom plug and the inner core, leave radial play between top plug and the inner core,
Be parallel to base plate, above permeable tube, arrange top board, vertically dispose support screw, the nut of packing on the support screw between top board and the base plate; Nut can move up and down along support screw, and the support screw lower end is fixed on the base plate, and the upper end is passed from top board; Top board is shelved on the nut
Compression cylinder is vertical to be fixed on the top board; The cylinder of the upper and lower both sides of piston disposes throttling valve respectively; External source of the gas connects the air intake opening of manual two position four-way valves through pressure regulator valve; Two gas outlets of manual two position four-way valves are communicated with two throttling valve on the compression cylinder respectively, have sound suppressor on manual two position four-way valves
Cylinder piston rod is passed down through top board, and the fixing squeezing of piston-rod lower end head, squeezing head are aimed at the top plug in the permeable tube,
Inner core comprises a plurality of inner cores that percentage of open area is different.
The ultimate principle of this device is: owing to the squeezing container is that cylindrical cross-section is long-pending constant, so press ratio equals to squeeze preceding bank height and high ratio is piled in the squeezing back.Promote the material to be measured that top plug compression contains free moisture through the cylinder constant voltage, under the constraint of certain percentage of open area inner/outer tube, free moisture flows out from permeable tube sidewall, until reaching steady state.Measure the aspect ratio of material before and after the squeezing, can draw this material press ratio under the constant voltage effect in certain percentage of open area container, thereby obtain the dehydration parameter of this material, for the development of pressure dehydration equipment provides technical parameter.
This device frame is the chassis body of top board, base plate, screw mandrel connection.Fixing compression cylinder on it, cylinder is through the pressure regulation pressure regulating valve.The cylinder top is installed the squeezing head and is used for promoting the top plug.The permeable container of pressure is made up of Intranet tube and outer net tube.The densely covered aperture of flexible inner core has even through-hole rate; The rigidity urceolus is uniformly distributed with macropore, and barrel is thicker, is used for lock ring Intranet tube; The intranet and extranet tube is detachable, and the Intranet tube has some moneys, and different through-hole rates are arranged, and can change according to the different test requests of difference material to be measured, to detect the press ratio of material to be measured under different percentage of open area.Bottom plug is installed in Intranet tube bottom, takes out material for ease of squeezing the back.
Further, threaded hole is offered with plug top, top in the bottom plug bottom, and the head of microscler handle has the thread segment that is complementary with threaded hole.Handle capable of using screws in bottom plug and top plug, from permeable tube, takes out bottom plug after convenient test finishes and fills in the top.
Further again, configuration ponding dish between permeable tube of hollow and the base plate, the ponding dish is shelved on the base plate, and permeable tube is shelved in the ponding dish, and the bottom plug height is more than or equal to the ponding dish degree of depth.In the test, the moisture that squeezes out flows into the ponding dish, is convenient to further detection; The bottom plug height avoids material to be measured bottom to immerse in the ponding dish ponding more than or equal to the ponding dish degree of depth, influences testing result.
Further again, along permeable tube axis direction, be close to the vertical scale of permeable tube outside configuration.Be convenient for measuring, write down the bank High variation situation before and after detecting.
Further again, the radial play between bottom plug and the inner core, between top plug and the inner core is 0.5～1mm.
Beneficial effect of the present invention is:
1, only need to change inner core, regulate pressure regulator valve, just can utilize a table apparatus to accomplish the material press ratio test under different pressures value, the different vessels through-hole rate condition, easy to use;
2, whole table apparatus is simple in structure, unpicks and washes conveniently, is beneficial to experimental implementation repeatedly;
3, can guarantee that single test accomplishes under constant-pressure conditions, accuracy of experimental results improves greatly.
Description of drawings
Fig. 1 is a front elevation of the present invention
Fig. 2,3 is that single pressing is than the material position view before and after the testing experiment
In Fig. 1～3: 1 is the ponding dish, and 2 is permeable tube, and 201 is inner core, and 202 is urceolus, and 3 is bottom plug; 4 are the top plug, and 5 are the squeezing head, and 6 is base plate, and 7 is top board; 8 is screw mandrel, and 9 is nut, and 10 is compression cylinder, and 101 is throttling valve; 102 is manual two position four-way valves, and 103 is sound suppressor, and 104 is pressure regulator valve, and 11 is material to be measured.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
On horizonal base plate 6, shelve a ponding dish 1, shelve the permeable tube 2 of hollow of tubular in the ponding dish 1, permeable tube 2 is by inside and outside tube 201; 202 suits form; Upper and lower end all is an openend, and inner core 201 is the filter screen barrel, and urceolus 202 is for evenly offering the tunnel wall of steel plate of permeable hole.
The permeable tube 2 lower ends cylindricality bottom plug 3 of packing into, material 11 to be measured is filled in bottom plug 3 tops, and material to be measured 11 tops cover the top plug 4 of cylindricality, and top plug 4 is positioned at permeable tube 2, and bottom plug 3 height are more than or equal to ponding dish 1 degree of depth.Between bottom plug 3 and the inner core 201, leave radial play between top plug 4 and the inner core 201, threaded hole is offered with plug 4 tops, top in bottom plug 3 bottoms, conveniently utilizes handle to take out bottom plug 3 and fills in 4 with the top.
Be parallel to base plate 6, above permeable tube 2, arrange top board 7; Vertically dispose support screw 8 between top board 7 and the base plate 6; The nut 9 of packing on the support screw 8, nut can move up and down along support screw 8, and support screw 8 lower ends are fixed on the base plate 6; The upper end is passed from top board 7, and top board 7 is shelved on the nut 9.Being provided with of screw mandrel can be with the top board 6 upper and lower segment distances that move; This is to consider that the press ratio of some material is bigger; The fixed journey system of compression cylinder possibly can't satisfy the squeezing experimental requirements, and this moment can be with nut 9 downward modulations one segment distance, and convenient experiment is carried out.
Cylinder piston rod is passed down through top board 7, the fixing squeezing of piston-rod lower end 5, and the tops plug 4 that squeezing 5 is aimed in the permeable tube 2,
If Intranet tube height h1, bottom plug height h2, depth pistion h3, the height h4 of squeezing secondary piston top to material, squeezing back piston top is to Intranet nozzle height h5, and then material press ratio under controlled condition is i=(h1-h2-h4)/(h1-h2-h3-h5).
Working example: test the press ratio of a kind of river course mud, be used for the design of pressafiner screw rod pitch.Known h1=200mm, h2=25mm, h3=25mm.
The first step is that 13% inner core 201 inserts urceolus 202 with percentage of open area, and bottom plug 3 is filled in the bottom.
Second step, mud is put into inner core 201, measure the height h4 on mud to inner core 201 tops, get h4=32mm, and place in the middle of the ponding dish 1.
In the 3rd step, adjustment top board 7 height is regulated pressure regulator valve 104 to correct position, and keeping pressure gas air pressure is 6kgf/cm2, controls two position four-way valves 102 and will squeeze 5 and pack up.
In the 4th step, base plate 6 central authorities put into ponding dish 1 and permeable tube 2, and start compression cylinder 10, and squeezing 5 will push up plug 4 and is pressed into the moisture inflow ponding dish 1 that squeezes out.
The 5th step after 10 minutes, reached steady state (SS), will squeeze 5 and pack up, and took out permeable tube 2, measured the dark h5=98mm after the squeezing, through formula i=(h1-h2-h4)/(h1-h2-h3-h5), got percentage of open area 13%, pressure 6kgf/cm
2Condition under, the press ratio i=2.75 of river course mud.Moisture in the ponding dish 1 can supply other analyses.
Change inner core 201, change pressure, repeat above-mentioned first to the 5th step, can get the press ratio of river course mud under different percentage of open area, the different pressures condition.
Claims (5)
1. press ratio proving installation is characterized in that:
On horizonal base plate (6), shelve the permeable tube of hollow (2) of a tubular, permeable tube (2) is formed by inside and outside tube (201,202) suit, and upper and lower end all is an openend, and inner core (201) is the filter screen barrel, and urceolus (202) is a tunnel wall of steel plate of evenly offering permeable hole,
Permeable tube (2) lower end cylindricality bottom plug (3) of packing into; Material to be measured (11) is filled in bottom plug (3) top, and material to be measured (11) top covers the top plug (4) of cylindricality, and top plug (4) is positioned at permeable tube (2); Between bottom plug (3) and the inner core (201), leave radial play between top plug (4) and the inner core (201)
Be parallel to base plate (6), arrange top board (7) in permeable tube (2) top; Vertically dispose support screw (8) between top board (7) and the base plate (6), the nut (9) of packing on the support screw (8), nut can move up and down along support screw (8); Support screw (8) lower end is fixed on the base plate (6); The upper end is passed from top board (7), and top board (7) is shelved on the nut (9)
Compression cylinder (10) is vertical to be fixed on the top board (7); The cylinder of the upper and lower both sides of piston disposes throttling valve (101) respectively; External source of the gas connects the air intake opening of manual two position four-way valves (102) through pressure regulator valve (104); Two gas outlets of manual two position four-way valves (102) are communicated with two throttling valve (101) on the compression cylinder (10) respectively, have sound suppressor (103) on manual two position four-way valves (102)
Cylinder piston rod is passed down through top board (7), and the fixing squeezing head of piston-rod lower end (5), squeezing head (5) are aimed at the top plug (4) in the permeable tube (2),
Said inner core (201) comprises a plurality of inner cores (201) that percentage of open area is different.
2. press ratio proving installation according to claim 1 is characterized in that:
Threaded hole is offered with plug (4) top, top in bottom plug (3) bottom, and the head of microscler handle has the thread segment that is complementary with threaded hole.
3. press ratio proving installation according to claim 1; It is characterized in that: configuration ponding dish (1) between permeable tube of said hollow (2) and the base plate (6); Ponding dish (1) is shelved on the base plate (6), and permeable tube (2) is shelved in the ponding dish (1), and bottom plug (3) height is more than or equal to ponding dish (1) degree of depth.
4. press ratio proving installation according to claim 1 is characterized in that: along permeable tube (2) axis direction, be close to the vertical scale of permeable tube (2) outside configuration.
5. press ratio proving installation according to claim 1 is characterized in that: the radial play between said bottom plug (3) and the inner core (201), between top plug (4) and the inner core (201) is 0.5～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110375841.7A CN102507878B (en) | 2011-11-23 | 2011-11-23 | Pressing rate testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110375841.7A CN102507878B (en) | 2011-11-23 | 2011-11-23 | Pressing rate testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102507878A true CN102507878A (en) | 2012-06-20 |
| CN102507878B CN102507878B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110375841.7A Expired - Fee Related CN102507878B (en) | 2011-11-23 | 2011-11-23 | Pressing rate testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105581623A (en) * | 2015-12-28 | 2016-05-18 | 龙好华 | Hydraulic squeezing juicer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1151832A (en) * | 1997-08-08 | 1999-02-26 | Koken Boring Mach Co Ltd | Method and apparatus for consolidation test |
| CN101581644A (en) * | 2009-06-18 | 2009-11-18 | 同济大学 | Preloading type sludge solidification compression tester |
| CN101587048A (en) * | 2009-06-25 | 2009-11-25 | 同济大学 | Anti-force type large-size sludge solidifying and compressing tester |
-
2011
- 2011-11-23 CN CN201110375841.7A patent/CN102507878B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1151832A (en) * | 1997-08-08 | 1999-02-26 | Koken Boring Mach Co Ltd | Method and apparatus for consolidation test |
| CN101581644A (en) * | 2009-06-18 | 2009-11-18 | 同济大学 | Preloading type sludge solidification compression tester |
| CN101587048A (en) * | 2009-06-25 | 2009-11-25 | 同济大学 | Anti-force type large-size sludge solidifying and compressing tester |
Non-Patent Citations (1)
| Title |
|---|
| 孙明文: "在筒式压滤机中滤饼二维恒压压榨脱水的理论研究", 《机械设计与制造》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105581623A (en) * | 2015-12-28 | 2016-05-18 | 龙好华 | Hydraulic squeezing juicer |
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| CN102507878B (en) | 2014-07-02 |
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