CN203183726U - Tower plate device of spraying tower - Google Patents
Tower plate device of spraying tower Download PDFInfo
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- CN203183726U CN203183726U CN 201320212150 CN201320212150U CN203183726U CN 203183726 U CN203183726 U CN 203183726U CN 201320212150 CN201320212150 CN 201320212150 CN 201320212150 U CN201320212150 U CN 201320212150U CN 203183726 U CN203183726 U CN 203183726U
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- calotte
- vertical sieve
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Abstract
The utility model relates to a tower plate device of a spraying tower, and belongs to the technical field of industrial equipment. According to the technical scheme, a tower plate (2) is horizontally arranged in a cylinder body (1); annular rising holes are formed in the tower plate; a liquid-receiving region (4) and a downspout (6) are arranged on the tower plate; the annular rising holes (11) are arranged by using the center of the tower plate as the center of a circle and are of an open annular hole structure; annular vertical sieve plate cover hoods (3) are arranged on the annular rising holes in a matching manner; more than two groups of annular rising holes and annular vertical sieve plate cover hoods are arranged; the annular diameters of each group are different; an annular diversion trench (10) is formed between two adjacent groups of annular vertical sieve plate cover hoods; and a liquid inlet and a liquid outlet are formed in the annular diversion trench so that a liquid flows into or out of the annular diversion trench. The tower plate device is simple in structure, small in investment and convenient to mount; and compared with the background art, the tower plate efficiency is improved by more than 10%, the production capacity of a tower with the same diameter is improved by more than 20%, and the service life of tower internals is prolonged by more than two times.
Description
Technical field
The utility model relates to a kind of spray tower tower tray device, as employed board-like spray tower internals on the industrial production, belongs to the industrial equipment technical field.
Background technology
Tower is widely used in chemical industry, pharmacy, the rectification and purification in industrial production fields such as food, absorption and separation, unit operations such as evaporation and concentration, the kind of tower is divided into plate column and packed tower, plate column is to be applied to industrialized a kind of tower the earliest, comprise bubble-cap, sieve aperture, float valve, multiple versions such as vertical sieve aperture, plate column is compared with packed tower, it is big to have operating flexibility, stable operation is reliable, mass transfer parts on the column plate clean convenient, be convenient to arrange the liquid cools heat sink, be convenient to arrange advantages such as a plurality of side line feed inlet and outlets, therefore, at present still in extensive use; But shortcomings such as the pressure drop of plate column ubiquity is big, plate efficiency is lower.Though all belong to plate column, but vertical sieve aperture class column plate and bubble-cap, sieve aperture, float valve class column plate are essentially different again, bubble-cap, sieve aperture and float valve class column plate, the gas-liquid two-phase on column plate all are to meet or contact in the cross-flow mode, and the hydrodynamics operating mode of two-phase belongs to foam bubbling type; Vertical sieve aperture class column plate belongs to the ejection-type column plate, and the ejection-type column plate is gas-liquid two-phase and stream, has increased gas load, has strengthened the contact of two-phase; The ejection-type column plate is divided into various ways such as tongue type column plate, perform tray, slant-hole tray, combined trapezoid spray tray again; Vertical sieve aperture is a kind of structural shape of ejection-type column plate, according to the data introduction, be to be developed to nineteen sixty-eight in 1963 by Mitsui Ship-building Company (MSE) the earliest, be characterized in that perforate (has circle on column plate, square hole, rectangular opening), arrange the circle that matches on the hole, square, the mass-and heat-transfer calotte of rectangle, circular, square, the calotte of rectangle is fixed on the column plate, have difform hole on the sidewall of calotte, leave the slit between the bottom of calotte and the column plate, each hole and supporting calotte have just been formed an independently mass-and heat-transfer unit, liquid receiving area and liquid-droping groove are arranged in the both sides of column plate, and liquid receiving area is the same substantially with setting and the common column plate of downspout.The efficient of calotte structure influence mass transfer unit, calotte bottom establish the slit so that liquid communication, and top blind flange rises and stops the gas-liquid mobilization that makes progress, and the circular hole of opening on cover body and the column plate, square hole, rectangular opening are fixing with one heart, are triangle or rectangular arranged at column plate.Such structure can make the Liquid Flow on the column plate be spray regime, and with and flow contact form.1971 U.S. fractionation company (FRI) measure to assert, this column plate with bubble-cap, sieve aperture, float valve class column plate is compared has characteristics such as disposal ability is big, mass transfer effect good, pressure drop is low, be widely used at present.
Though the vertical sieve aperture class jet tray of said structure has lot of advantages, but there are two big subject matters: the one, gas passes the calotte requirement very high gas flow rate, calotte stability circular, square or rectangle is very poor, must leave the slit between calotte and the column plate simultaneously, so its connected mode can only be taked locally-attached form, this version causes the stability of calotte poorer, when gas speed changes suddenly, the violent phenomenon of vacillating now to the left, now to the right can appear in calotte, very easily causes calotte to come off; In actual applications, the phenomenon that calotte comes off is very general, and in a single day calotte comes off, and the mass-and heat-transfer efficient of column plate can descend rapidly; The 2nd, liquid receiving area and liquid-droping groove are arranged in the left and right sides of column plate, it is shaped as arc, occupied the very big area of column plate, liquid flows to the process of liquid-droping groove from liquid receiving area simultaneously, there is more serious stagnant area, mixed flow region etc., air-teturning mixed phenomenon is comparatively serious, the middle part flow velocity is fast, the both sides flow velocity is slow, the liquid of both sides time of staying on column plate is longer, the CONCENTRATION DISTRIBUTION confusion of liquid on column plate, do not form the concentration gradient on certain streamwise, part liquid does not contact with gas and carries out the heat and mass transport reaction, has directly flow to liquid-droping groove by liquid receiving area, causes the mass transfer of liquid on column plate, heat transfer efficiency is restricted, though the mass-and heat-transfer unit that each air rising hole and supporting calotte are formed has very high efficient, the efficient of whole column plate is not high.
In recent years, people are a lot of to research and the improvement of vertical sieve tray, but the two large problems that the above vertical sieve aperture class jet tray exists does not have solution fundamentally, as China Patent No. 99200122.6,200620025314.8,200620081465.5,200820075320.3,201010300365.8,201220250049.9,201210404542.6 etc., these improvement, air rising hole on the column plate adopts remains circular hole, square hole or rectangular opening, just improvement and the optimization of carrying out in the calotte structure, improve the efficient of the mass-and heat-transfer unit that single air rising hole and supporting calotte form, fundamentally do not solved the calotte poor stability, easily come off, problems such as plate efficiency is low; The somebody has designed and has separated the no back-mixing jet tray of stream, as described in China Patent No. 201210513678.0, two tower trays combine one deck column plate about every layer of setting, and supporting a plurality of downspouts are set, be greatly improved aspect the solution liquid dispersion, but this tower plate structure is very complicated, the investment big, maintenance and cleaning are very inconvenient, the advantage of plate column has been subjected to restriction, and range of application is restricted.
The utility model content
The purpose of this utility model provides a kind of spray tower tower tray device, at column plate annular air rising hole is set, and the supporting annular vertical sieve plate calotte that arranges, the calotte good stability of loop configuration, difficult drop-off, the calotte of inside-and-outside ring structure is divided into uniform cannelure with tray surfaces simultaneously, realize that liquid carries out the mass-and heat-transfer reaction in the one-way flow in cannelure, thoroughly solving calotte easily comes off and the viscous flow of liquid on column plate, cross-flow, mixed flow, concentration gradient distributes chaotic, the liquid phenomenons such as directly being flowed to liquid-droping groove without mass-and heat-transfer by liquid receiving area that takes a shorter way solves the problems referred to above that background technology exists.
A kind of spray tower tower tray device comprises cylindrical shell, column plate, liquid receiving area, downspout, annular air rising hole, annular vertical sieve plate calotte; Column plate is horizontally disposed in cylindrical shell, and annular air rising hole is set on the column plate, is provided with liquid receiving area and downspout at column plate; The annular air rising hole is that the center of circle is arranged with the column plate center, is the non-closed annular pore structure; In annular air rising hole coupling annular vertical sieve plate calotte is set; Described annular air rising hole and annular vertical sieve plate calotte are more than two groups, the annular diameter difference of each group, form annular diversion trench between the two adjacent groups annular vertical sieve plate calotte, liquid-inlet and outlet are set on the annular diversion trench, so that liquid flows into or the outflow annular diversion trench.
The connected mode of the annular air rising hole on annular vertical sieve plate calotte and the column plate is identical with common vertical sieve tray, and the distance between the width of annular vertical sieve plate calotte and the two adjacent groups annular vertical sieve plate calotte is complementary with design tolerance and liquid measure.
Liquid-inlet and outlet are set on the described annular diversion trench, 1-3 liquid-inlet and outlet are set on each annular diversion trench.
For the ease of installing, described annular vertical sieve plate calotte is set to multistage arc vertical sieve tray calotte, when mounted, is assembled into annular.Can also between the arc of adjacent segment or rectangle vertical sieve tray calotte, leave spacing, by connecting plate (9) adjacent two sections arcs or rectangle vertical sieve tray calotte be connected, the whole annular that forms.The shape size of annular air rising hole matches with annular vertical sieve plate calotte.
Described annular vertical sieve plate calotte, its vertical cross section is rectangle or trapezoidal.
Described annular vertical sieve plate calotte, its horizontal layout form also can be polygon, adopts arc or rectangle vertical sieve tray calotte integral body to surround and is similar to loop configuration, said polygon is quadrangle or more than the quadrangle.
Described column plate multilayer, all horizontally disposed in cylindrical shell, the position interlaced arrangement of adjacent tray liquid receiving area and downspout, adjacent tray liquid receiving area and downspout mate mutually; Liquid receiving area and downspout arrangement are as follows: certain upper strata column plate liquid receiving area is arranged on the center of column plate, and downspout is arranged on column plate near a side of cylindrical shell; Be adjacent lower floor's column plate liquid receiving area and be arranged on this column plate near a side of cylindrical shell, and be complementary with the position of upper strata column plate downspout, lower floor's column plate downspout is arranged on the center of column plate, is complementary with the position of lower floor's column plate liquid receiving area again.
Described annular air rising hole and ring-type vertical sieve tray calotte are complementary, and annular air rising hole is the non-closed annular pore structure, and ring-type vertical sieve tray calotte also is non-closed annular calotte structure; Form annular diversion trench between the two adjacent groups annular vertical sieve plate calotte, space by the non-closed place of ring-type vertical sieve tray calotte is communicated with adjacent annular diversion trench, space at the non-closed place of ring-type vertical sieve tray calotte arranges dividing plate, the connected entrance of enclosure portion annular diversion trench makes annular diversion trench form one or two Uncrossed dish and returns passage.
Air rising hole and the calotte of the utility model vertical sieve plate column column plate are set to annular, and the space between the adjacent ring-type vertical sieve tray calotte is set to the liquid guide flow groove, with the mass-and heat-transfer interface of the ring-type vertical sieve tray calotte sidewall as guiding gutter; Ring-type vertical sieve tray calotte good stability, difficult drop-off, annular diversion trench can realize that liquid is finished mass transfer in one-way flow and the reaction of conducting heat, and improve the cycle of operation and the plate efficiency of vertical sieve plate column, solve the problems referred to above that background technology exists.
Good effect of the present utility model is: utilize that loop configuration is reliable and stable, the characteristics of difficult drop-off, the vertical sieve tray calotte is set to loop configuration, and with the supporting annular that is set to of air rising hole, the cross sectional shape overwhelming majority of industrial used tower is circular, the annular air rising hole is easy to realize evenly arranging at circular column plate, be conducive to improve the percent opening of column plate, and then improve output of column; Ring-type vertical sieve tray calotte also is easy to realize the even layout of cannelure, and then realize that liquid is in the even one-way flow of column plate upper edge cannelure, thoroughly eliminate phenomenons such as viscous flow, cross-flow, mixed flow, concentration gradient distribution confusion, the liquid of liquid on column plate takes a shorter way, and then improve the heat and mass efficient of whole column plate.
The utility model is simple in structure, small investment, easy for installation, advantage and advantage with vertical sieve tray further enlarges simultaneously, compare plate efficiency with background technology and improve more than 10%, the same diameter output of column improves more than 20%, and prolong more than 2 times the service life of tower internals.
Description of drawings
Accompanying drawing 1 is the utility model embodiment one structural representation;
Accompanying drawing 2 is embodiment one certain one deck tower plate structure cross-sectional schematic;
Accompanying drawing 3 is embodiment one certain one deck column plate flow direction schematic diagram;
Accompanying drawing 4 is and accompanying drawing 3 adjacent tray structure cross-sectional schematic;
Accompanying drawing 5 is and accompanying drawing 3 adjacent tray flow direction schematic diagrames;
Accompanying drawing 6 is the utility model embodiment two structural representations;
Accompanying drawing 7 is the single annular calotte floor map of the utility model;
Among the figure: cylindrical shell 1, column plate 2, annular vertical sieve plate calotte 3, liquid receiving area 4, dividing plate 5, downspout 6, downflow weir 7, liquid flow direction 8, connecting plate 9, annular diversion trench 10, annular air rising hole 11, non-closed place 12, forward terminal 13, aft terminal 14.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
A kind of spray tower tower tray device comprises cylindrical shell 1, column plate 2, liquid receiving area 4, downspout 6, annular air rising hole 11, annular vertical sieve plate calotte 3; Column plate is horizontally disposed in cylindrical shell, and annular air rising hole is set on the column plate, is provided with liquid receiving area and downspout at column plate; The annular air rising hole is that the center of circle is arranged with the column plate center, is the non-closed annular pore structure; In annular air rising hole coupling annular vertical sieve plate calotte is set; Described annular air rising hole and annular vertical sieve plate calotte are more than two groups, the annular diameter difference of each group, form annular diversion trench 10 between the two adjacent groups annular vertical sieve plate calotte, liquid-inlet and outlet are set on the annular diversion trench, so that liquid flows into or the outflow annular diversion trench.
Liquid-inlet and outlet are set on the described annular diversion trench, 1-3 liquid-inlet and outlet are set on each annular diversion trench.
For the ease of installing, described annular vertical sieve plate calotte is set to multistage arc vertical sieve tray calotte, when mounted, is assembled into annular.Can also between the arc of adjacent segment or rectangle vertical sieve tray calotte, leave spacing, by connecting plate 9 adjacent two sections arcs or rectangle vertical sieve tray calotte be connected, the whole annular that forms.The shape size of annular air rising hole matches with annular vertical sieve plate calotte.
Described annular vertical sieve plate calotte, its vertical cross section is rectangle or trapezoidal.
Described column plate multilayer, all horizontally disposed in cylindrical shell, the position interlaced arrangement of adjacent tray liquid receiving area and downspout, adjacent tray liquid receiving area and downspout mate mutually; Liquid receiving area and downspout arrangement are as follows: certain upper strata column plate liquid receiving area is arranged on the center of column plate, and downspout is arranged on column plate near a side of cylindrical shell; Be adjacent lower floor's column plate liquid receiving area and be arranged on this column plate near a side of cylindrical shell, and be complementary with the position of upper strata column plate downspout, lower floor's column plate downspout is arranged on the center of column plate, is complementary with the position of lower floor's column plate liquid receiving area again.
Embodiment one, described annular air rising hole and annular vertical sieve plate calotte are three groups, described annular air rising hole and ring-type vertical sieve tray calotte are complementary, and annular air rising hole is the non-closed annular pore structure, and ring-type vertical sieve tray calotte also is non-closed annular calotte structure; Form annular diversion trench between the two adjacent groups annular vertical sieve plate calotte, space by the non-closed place 12 of ring-type vertical sieve tray calotte is communicated with adjacent annular diversion trench, space at the non-closed place of ring-type vertical sieve tray calotte arranges dividing plate, the connected entrance of enclosure portion annular diversion trench, make annular diversion trench form self Uncrossed dish and return passage, liquid is one-way flow in passage.
In the present embodiment, the non-closed place equal 12 of described many group ring-type vertical sieve tray calottes is in same sector region, and the non-closure of each ring-type vertical sieve tray calotte is mutually near arranging; There are former and later two end points at the non-closed place of ring-type vertical sieve tray calotte, former and later two end points at the non-closed place of dividing plate intersection sealing two adjacent groups ring-type vertical sieve tray calotte, namely be arranged between the forward terminal 13 and the non-closed aft terminal of locating 14 of adjacent ring-type vertical sieve tray calotte at the non-closed place of ring-type vertical sieve tray calotte, perhaps be arranged between the aft terminal and the non-closed forward terminal of locating of adjacent ring-type vertical sieve tray calotte at the non-closed place of ring-type vertical sieve tray calotte interlaced arrangement.
Embodiment two, described annular air rising hole and annular vertical sieve plate calotte are three groups, described annular air rising hole and ring-type vertical sieve tray calotte are complementary, and annular air rising hole is the non-closed annular pore structure, and ring-type vertical sieve tray calotte also is non-closed annular calotte structure; Form annular diversion trench between the two adjacent groups annular vertical sieve plate calotte, space by the non-closed place of ring-type vertical sieve tray calotte is communicated with adjacent annular diversion trench, space at the non-closed place of ring-type vertical sieve tray calotte arranges dividing plate, the connected entrance of enclosure portion annular diversion trench, make annular diversion trench form two do not intersect mutually, self Uncrossed dish returns passage, two strands of liquid is one-way flow in the passage of oneself respectively.
In the present embodiment, ring-type vertical sieve tray calotte is combined by two sections arc vertical sieve tray calottes, and each ring-type vertical sieve tray calotte is provided with two non-closed places; Two non-closed places of many group ring-type vertical sieve tray calottes all are in two sector regions, and the non-closure of each ring-type vertical sieve tray calotte is mutually near arranging; There are former and later two end points at the non-closed place of ring-type vertical sieve tray calotte, former and later two end points at the non-closed place of dividing plate intersection sealing two adjacent groups ring-type vertical sieve tray calotte, namely be arranged between the forward terminal and the non-closed aft terminal of locating of adjacent ring-type vertical sieve tray calotte at the non-closed place of ring-type vertical sieve tray calotte, perhaps be arranged between the aft terminal and the non-closed forward terminal of locating of adjacent ring-type vertical sieve tray calotte at the non-closed place of ring-type vertical sieve tray calotte interlaced arrangement.
With reference to accompanying drawing 1, comprise cylindrical shell 1, column plate 2, annular vertical sieve plate calotte 3, baffle plate 5, annular diversion trench 10, column plate 2 levels are installed in the cylindrical shell 1, and be connected with the inwall of cylindrical shell 1, annular vertical sieve plate calotte 3 is installed in the top of column plate 2, and is connected with column plate 2, matches with the annular air rising hole opened on the column plate 2 simultaneously, surround annular diversion trench 10 between inside and outside two adjacent annular vertical sieve plate calottes, 1 liquid-inlet and outlet are set on the annular diversion trench 10; Shown in accompanying drawing 2 and accompanying drawing 3, one side of certain one deck column plate arranges downspout 6, the column plate center is liquid receiving area 4, downflow weir 7 be arranged on column plate one side and downspout 6 supporting, to outer annular diversion trench 10 one-way flow, the downspout 6 that flows to column plate one side entered down one deck column plate in the flow direction of liquid on column plate served as reasons; Shown in attached Figure 4 and 5, the side that the center of the neighbouring two-layer column plate of certain one deck column plate arranges downspout 6, column plate is liquid receiving area 4, the part that the set downspout in column plate center exceeds column plate is downflow weir 7, the flow direction of liquid on column plate be ecto-entad along annular diversion trench 10 one-way flow, the downspout 6 that flows to the column plate center enters down one deck column plate.
As shown in Figure 6, at annular diversion trench 10 2 liquid-inlets and outlet are set, the both sides of certain one deck column plate arrange downspout 6, the column plate center is liquid receiving area 4, and the both sides that the center of neighbouring two-layer column plate arranges downspout 6, column plate then are liquid receiving area 4; Flowing of liquid is one-way flow still, but becomes two bursts of one-way flow, is applicable to the operating mode that liquid measure is bigger.
With reference to accompanying drawing 7, for ease of fabrication and installation, annular vertical sieve plate calotte 3 can be made as a plurality of arcuate structures, splice during installation, also can leave spacing between the arc calotte and adopt connecting plate 9 to connect, institute's air rising hole of opening and arc calotte are complementary on the column plate.
Claims (7)
1. a spray tower tower tray device is characterized in that: comprise cylindrical shell (1), column plate (2), liquid receiving area (4), downspout (6), annular air rising hole (11), annular vertical sieve plate calotte (3); Column plate is horizontally disposed in cylindrical shell, and annular air rising hole is set on the column plate, is provided with liquid receiving area and downspout at column plate; The annular air rising hole is that the center of circle is arranged with the column plate center, is the non-closed annular pore structure; In annular air rising hole coupling annular vertical sieve plate calotte is set; Described annular air rising hole and annular vertical sieve plate calotte are more than two groups, and the annular diameter difference of each group forms annular diversion trench (10) between the two adjacent groups annular vertical sieve plate calotte, and liquid-inlet and outlet are set on the annular diversion trench.
2. a kind of spray tower tower tray device according to claim 1 is characterized in that: liquid-inlet and outlet are set on the described annular diversion trench, 1-3 liquid-inlet and outlet are set on each annular diversion trench.
3. a kind of spray tower tower tray device according to claim 1 and 2 is characterized in that: described annular vertical sieve plate calotte, be set to multistage arc vertical sieve tray calotte, and be assembled into annular.
4. a kind of spray tower tower tray device according to claim 3, it is characterized in that: between the arc of adjacent segment or rectangle vertical sieve tray calotte, leave spacing, adjacent two sections arcs or rectangle vertical sieve tray calotte are connected the whole annular that forms by connecting plate (9).
5. a kind of spray tower tower tray device according to claim 1 and 2 is characterized in that: described column plate multilayer, and all horizontally disposed in cylindrical shell, the position interlaced arrangement of adjacent tray liquid receiving area and downspout, adjacent tray liquid receiving area and downspout mate mutually; Liquid receiving area and downspout arrangement are as follows: certain upper strata column plate liquid receiving area is arranged on the center of column plate, and downspout is arranged on column plate near a side of cylindrical shell; Be adjacent lower floor's column plate liquid receiving area and be arranged on this column plate near a side of cylindrical shell, and be complementary with the position of upper strata column plate downspout, lower floor's column plate downspout is arranged on the center of column plate, is complementary with the position of lower floor's column plate liquid receiving area again.
6. a kind of spray tower tower tray device according to claim 1 and 2, it is characterized in that: described annular air rising hole and ring-type vertical sieve tray calotte are complementary, the annular air rising hole is the non-closed annular pore structure, and ring-type vertical sieve tray calotte also is non-closed annular calotte structure; Form annular diversion trench between the two adjacent groups annular vertical sieve plate calotte, space by the non-closed place of ring-type vertical sieve tray calotte (12) is communicated with adjacent annular diversion trench, space at the non-closed place of ring-type vertical sieve tray calotte arranges dividing plate, the connected entrance of enclosure portion annular diversion trench makes annular diversion trench form self Uncrossed dish and returns passage.
7. a kind of spray tower tower tray device according to claim 1 and 2, it is characterized in that: described annular air rising hole and ring-type vertical sieve tray calotte are complementary, the annular air rising hole is the non-closed annular pore structure, and ring-type vertical sieve tray calotte also is non-closed annular calotte structure; Form annular diversion trench between the two adjacent groups annular vertical sieve plate calotte, space by the non-closed place of ring-type vertical sieve tray calotte is communicated with adjacent annular diversion trench, space at the non-closed place of ring-type vertical sieve tray calotte arranges dividing plate, the connected entrance of enclosure portion annular diversion trench, make annular diversion trench form two do not intersect mutually, self Uncrossed dish returns passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212150 CN203183726U (en) | 2013-04-25 | 2013-04-25 | Tower plate device of spraying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212150 CN203183726U (en) | 2013-04-25 | 2013-04-25 | Tower plate device of spraying tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203183726U true CN203183726U (en) | 2013-09-11 |
Family
ID=49100630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320212150 Withdrawn - After Issue CN203183726U (en) | 2013-04-25 | 2013-04-25 | Tower plate device of spraying tower |
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| Country | Link |
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| CN (1) | CN203183726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170152A (en) * | 2013-04-25 | 2013-06-26 | 文安县天澜新能源有限公司 | Spraying tower tray device |
-
2013
- 2013-04-25 CN CN 201320212150 patent/CN203183726U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170152A (en) * | 2013-04-25 | 2013-06-26 | 文安县天澜新能源有限公司 | Spraying tower tray device |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130911 Effective date of abandoning: 20141105 |
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| RGAV | Abandon patent right to avoid regrant |