CN104747753B - A kind of drying system containing combined directional valve - Google Patents

A kind of drying system containing combined directional valve Download PDF

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Publication number
CN104747753B
CN104747753B CN201510052014.2A CN201510052014A CN104747753B CN 104747753 B CN104747753 B CN 104747753B CN 201510052014 A CN201510052014 A CN 201510052014A CN 104747753 B CN104747753 B CN 104747753B
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CN
China
Prior art keywords
unicom
interconnections
plunger
sections
plunger bushing
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CN201510052014.2A
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Chinese (zh)
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CN104747753A (en
Inventor
姜慧君
李金禄
潘艺昌
谭跃进
李小仨
于洋
毛京兵
鲍军
张二新
王树胜
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Hefei General Machinery Research Institute Co Ltd
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Hefei General Machinery Research Institute Co Ltd
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Priority to CN201510052014.2A priority Critical patent/CN104747753B/en
Publication of CN104747753A publication Critical patent/CN104747753A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours

Abstract

The present invention discloses a kind of drying system containing combined directional valve, the system includes inlet duct, air-out apparatus, two drying towers of drying tower I and II drying tower, muffler, upper piping and combined directional valve, and the drive mechanism of the driving combined directional valve switching, the inlet end of the inlet duct and the combined directional valve is connected, the outlet side of the muffler and the combined directional valve is connected, the M air admission holes and N air admission holes of the combined directional valve connect the inlet end of I drying tower and II drying tower respectively, the regeneration hole joint noise reduction device of the combined directional valve, piping is provided between the outlet side of described two drying towers.For solving the problem of four electric butterfly valves of absorption drier in the prior art combine the switching valve faults frequent produced, poor reliability, with simple in construction, the advantage that energy consumption is small, commutating period is short.

Description

A kind of drying system containing combined directional valve
Technical field
The present invention relates to technical field is air-dried, it is related to a kind of drying system containing combined directional valve.
Background technology
The course of work of absorption drier is to utilize pressure-variable adsorption, and regeneration cycle makes compressed air flow alternately through I, II Two drying chambers full of adsorbent, i.e., when one tank body adsorbs water vapour under high partial pressures (operating pressure) state, another Tank body is parsed under low partial pressure (close to atmospheric pressure), and then program switches according to set time.Its course of work is I in simple terms Tower adsorbs that the regeneration of II tower, two towers are pressed, II tower adsorbs the regeneration of I tower, and circulation successively is gone down, the conversion of each process be by A1, Tetra- electric butterfly valves of B1, A2, B2 switch to realize.Four electric butterfly valves A1, B1, A2, B2 are symmetrical, and not only structure is answered It is miscellaneous, easily loss, switching valve faults frequent, poor reliability, and four electric butterfly valves need four drive devices to be operated alone, and start Power is big, and air pressure loss is big, and commutating period is long, and low-response, energy consumption is big.
The content of the invention
It is an object of the invention to provide a kind of drying system containing combined directional valve, for solving to adsorb in the prior art The problem of four electric butterfly valves of formula drying machine combine the switching valve faults frequent produced, poor reliability, with simple in construction, energy Consume short advantage of small, commutating period.
To achieve the above object, present invention employs following technical scheme：
A kind of drying system containing combined directional valve, the system include inlet duct, air-out apparatus, two it is in parallel dry The dry drying tower of tower I and II drying tower, muffler, upper piping, combined directional valve, and controller, the inlet duct with it is described The air admission hole of combined directional valve is connected, and the regeneration hole of the muffler and the combined directional valve is connected, and the combination is changed The inlet end of I drying tower and II drying tower, the outlet of described two drying towers are connected respectively to the M ventholes and N ventholes of valve Upper piping, the upper piping connection air-out apparatus, the controller connection combined directional valve, for controlling are connected between end The combined directional valve switches station to realize I drying tower and II drying tower alternation；
The combined directional valve includes valve body and valve element, and the valve body is provided with spool bore, communication passage,
The spool bore includes the first spool bore and the second spool bore, and first spool bore and second spool bore are simultaneously Row is arranged on the valve body；First spool bore and second spool bore are hollow cylinders, inside there is the accommodating valve The space of core；
The valve body is provided with air admission hole and regeneration hole, and the air admission hole and the regeneration hole are divided into the two of the valve body On side end face, the air admission hole and the first spool bore UNICOM, the regeneration hole and the second spool bore UNICOM；
The communication passage includes being arranged in order, the first longitudinal direction passage that axis is parallel to each other and coplanar, second longitudinal direction Passage and the 3rd vertical passage, the communication passage are arranged at the valve body between first spool bore and second spool bore M ventholes and N ventholes, the M ventholes and the first longitudinal direction passage UNICOM, the N are additionally provided with inside, the valve body Venthole and the 3rd vertical passage UNICOM；
A interconnections, B interconnections, C interconnections and D interconnections are provided with first spool bore from top to bottom, The A interconnections and the second longitudinal direction passage UNICOM, the B interconnections and the 3rd vertical passage UNICOM, the C Interconnection and the first longitudinal direction passage UNICOM, the D interconnections and the second longitudinal direction passage UNICOM；
Second spool bore is provided with E interconnections, F interconnections and G interconnections, the E interconnections and institute State first longitudinal direction passage UNICOM, the F interconnections and the 3rd vertical passage UNICOM, the G interconnections and described the Two vertical passage UNICOMs；
The valve element includes the first plunger portion and the second plunger portion, and first plunger portion is installed on first spool bore Interior, second plunger portion is installed in second spool bore；
First plunger portion includes the first plunger rod and the first plunger bushing, and first plunger bushing is fixedly installed in described In first spool bore, first plunger bushing is laterally logical provided with A interconnections described in UNICOM, B interconnections, C is respectively used to The passage in road, D interconnections and air admission hole；First plunger rod is slidably mounted in first plunger bushing, described The outer wall of first plunger rod is internally formed UNICOM's chamber with first plunger bushing, when first plunger rod is in a high position, The B interconnections and air admission hole UNICOM, the C interconnections and the D interconnections UNICOM, at first plunger rod When low level, A interconnections and B the interconnections UNICOM, the air admission hole and the C interconnections UNICOM；
Second plunger portion includes the second plunger bushing and the second plunger rod, and second plunger bushing is fixed on described second In spool bore, second plunger bushing provided be respectively used to E interconnections described in UNICOM, F interconnections, G interconnections and Regenerate the passage in hole, second plunger rod be slidably mounted with second plunger bushing, second plunger rod it is outer UNICOM's chamber is formed between the inwall of wall and second plunger bushing, when the plunger rod is in a high position, UNICOM's chamber UNICOM The G interconnections and regeneration hole；When the plunger rod is in low level, E interconnections described in UNICOM's chamber UNICOM and F are horizontal To passage.
The present invention can also further be realized by following steps.
Further, the outer wall of first plunger bushing and the inwall of first spool bore are in the A interconnections, B It is horizontal that relative position where interconnection, C interconnections, D interconnections and air admission hole is respectively equipped with the A described in UNICOM Passage, B interconnections, A ring cavities, B ring cavities, C ring cavities, D ring cavities and the H ring cavities of C interconnections and D interconnections, each ring cavity it Between first spool bore and first plunger bushing between be provided with sealing, A ring cavities away from other ring cavities opposite side I.e. the opposite side of the upside of A ring cavities and D ring cavities away from other ring cavities is to be equipped with sealing on the downside of D ring cavities；
First plunger rod is slidably mounted in first plunger bushing, and one end of first plunger rod is provided with the The first plunger channel extended to the first end cap direction is provided with one end cap, the other end axle center of first plunger rod, it is described Inwall four sections of UNICOM's chambers of formation of the outer wall of first plunger rod and first plunger bushing, distinguish successively from the first end cap end For first UNICOM's chamber, second UNICOM's chamber, the 3rd UNICOM's chamber and tetrad cavity, interior sealing portion, institute are provided between adjacent UNICOM's chamber The other end for stating remote first end cap of the i.e. described plunger rod in end of tetrad cavity is provided with interior sealing portion, described first UNICOM's chamber and the first plunger channel UNICOM；
When the plunger rod is in it is high-order when, A interconnections described in the chamber UNICOM of the second UNICOM, described in the 3rd UNICOM's chamber B interconnections and the air admission hole UNICOM, C interconnections described in tetrad cavity and the D interconnections UNICOM；When the post When stopper rod is in low level, A interconnections and the B interconnections, the 3rd UNICOM's chamber described in the chamber UNICOM of the second UNICOM Air admission hole described in UNICOM and the C interconnections, D interconnections described in tetrad cavity UNICOM；
The outer wall of second plunger bushing and the inwall of second spool bore are in the E interconnections, F interconnections, G Relative position where interconnection and regeneration hole is respectively equipped with E interconnections described in UNICOM, F interconnections, G interconnections With E ring cavities, F ring cavities, G ring cavities and the I ring cavities in regeneration hole, second spool bore and second plunger bushing between each ring cavity Between be provided with sealing, positioned at end G ring cavities away from other ring cavities opposite side be G ring cavities downside and E ring cavities it is remote Opposite side from other ring cavities is to be equipped with sealing on the upside of E ring cavities；
Second plunger rod is slidably mounted and in second plunger bushing, one end of second plunger rod is provided with Dismountable second end cap, the second plunger that the other end of the plunger rod opens up oriented second end cap side extension at axle center leads to Road, inwall three sections of UNICOM's chambers of formation of the outer wall of second plunger rod and second plunger bushing, from the second end cap end Epimere UNICOM chamber, stage casing UNICOM chamber and hypomere UNICOM chamber, epimere UNICOM chamber and the second plunger channel UNICOM are followed successively by, It is provided between stage casing UNICOM chamber and hypomere UNICOM chamber on interior sealing portion, the plunger rod of the both sides in the interior sealing portion Provided with sealed step, the sealed step positioned at stage casing UNICOM chamber is stage casing sealing station, and the sealed step positioned at hypomere UNICOM chamber is Hypomere sealing station, forms stage casing close respectively between the stage casing sealing station and hypomere sealing station and the inwall of second plunger bushing Envelope and hypomere sealing, one end relative with hypomere sealing station is that the one end of second plunger rod away from second end cap is provided with Interior sealing portion；
When second plunger rod is in upper level position, stage casing sealing is in sealing state, and hypomere sealing is in dislocation shape State, the chamber UNICOM of hypomere UNICOM G interconnections and the regeneration UNICOM；When second plunger rod is in low order position, in Section sealing is in misaligned state, and hypomere sealing is in sealing state, and E interconnections described in the chamber UNICOM of stage casing UNICOM and F are horizontal To passage.
Further, the A interconnections include the A1 being arranged in the relative position of the first spool bore hole wall Section and A3 sections, wherein A3 sections and the second longitudinal direction passage UNICOM；
The B interconnections include the B1 sections being arranged in the relative position of the first spool bore hole wall and B3 sections, its Middle B3 sections and the 3rd vertical passage UNICOM；
The C interconnections include the C1 sections being arranged in the relative position of the first spool bore hole wall and C3 sections, its Middle C3 sections and the first longitudinal direction passage UNICOM；
The D interconnections include the D1 sections being arranged in the relative position of shown first spool bore hole wall and D3 sections, its Middle D3 sections and the second longitudinal direction passage UNICOM；
The E interconnections include the E1 sections being arranged in the relative position of the second spool bore hole wall and E3 sections, its Middle E3 and the first longitudinal direction passage UNICOM；
The F interconnections include the F1 sections being arranged in the relative position of the second spool bore hole wall and F3 sections, its Middle F3 sections and the 3rd vertical passage UNICOM；
The G interconnections include the G1 sections being arranged in the relative position of the second spool bore hole wall and G3 sections, its Middle G3 sections and the second longitudinal direction passage UNICOM.
Further, described A1 sections, B1 sections, C1 sections and D1 sections are arranged at the first spool bore where the air admission hole On half side hole wall, described A1 sections, D1 sections, air admission hole, the first spool bore and the second spool bore axis it is parallel to each other and coplanar, institute The A1 sections and D1 sections both sides up and down for being located at the air admission hole respectively are stated, described B1 sections and C1 sections is located at described A1 sections, D1 sections respectively With the both sides of straight line where air admission hole, described B1 sections is located at described A1 sections between the air admission hole, and described B1 sections close to the N One side where venthole, described C1 sections be located at the air admission hole and be described D1 section between hole wall on, the C1 sections of close M One side where venthole；
On the half side hole wall of the second spool bore that described E1 sections, F1 sections and G1 sections is arranged at where the regeneration hole, institute Straight line where stating regeneration hole and being described G1 sections is all parallel with the axle of first spool bore and second spool bore, the G1 Hole position is in the lower section in the regeneration hole, and described E1 sections is separately positioned on the two of regeneration hole and G3 sections of place straight line with F1 sections Side, and the F1 is located at the top in the regeneration hole, described F1 sections close to the one side where the N ventholes, the E1 holes Top positioned at the F1 holes, described E1 sections close to the one side where the M ventholes；
Described D1 sections with described G1 sections along first longitudinal direction passage, second longitudinal direction passage and the 3rd vertical passage three axis institute Plane it is symmetrical, the air admission hole and the regeneration hole are along first longitudinal direction passage, second longitudinal direction passage and the 3rd longitudinal direction Plane where passage three's axis is symmetrical, and described B1 sections with described F1 sections along first longitudinal direction passage, second longitudinal direction passage It is symmetrical with plane where the 3rd vertical passage three's axis.
Further, first plunger bushing is by the first epimere plunger bushing, the first stage casing plunger bushing and first time end plug Docking is constituted set successively, and the one end of the first epimere plunger bushing away from first stage casing plunger bushing is provided with the first epimere screw thread Connecting portion, the one end of the first hypomere plunger bushing away from first stage casing plunger bushing is provided with the first epimere threaded joints, First plunger bushing is fixedly installed in described by the first epimere threaded joints and the first epimere threaded joints In first spool bore；The first epimere plunger bushing is provided with two seal grooves for being used to install O-ring seal, two seal grooves Between plunger bushing be provided between an annular groove, the inwall of the cell wall of the annular groove and first spool bore and form institute A ring cavities are stated, the cell wall of the annular groove is provided with A2 through holes；First stage casing plunger bushing and the first epimere plunger bushing The relative interface connect is provided with projection, first stage casing plunger bushing and first epimere with the first hypomere plunger bushing The plunger bushing outer wall of the joint of plunger bushing and the inwall of first spool bore form the B ring cavities, first stage casing post The joint formation B2 circumferential welds of plug sleeve and the first epimere plunger bushing, first stage casing plunger bushing and the first hypomere post The plunger bushing outer wall of the joint of plug sleeve and the inwall of first spool bore form the C ring cavities, first stage casing plunger The joint C3 circumferential welds of set and the first hypomere plunger bushing, first stage casing plunger bushing is used to install annular provided with two Plunger bushing between the seal groove of sealing ring, two seal grooves is provided with an annular groove, the cell wall of the annular groove with it is described The H2 through holes set on the H ring cavities, the cell wall of the annular groove are formed between the inwall of first spool bore；The first hypomere post The plunger bushing that plug sleeve is provided between two seal grooves for being used to install O-ring seal, two seal grooves is recessed provided with an annular The D ring cavities, the cell wall of the annular groove are formed between the inwall of groove, the cell wall of the annular groove and first spool bore It is provided with D2 through holes；
When first plunger rod is in a high position, A2 through holes, i.e., described second described in the chamber UNICOM of the second UNICOM A interconnections described in cavity UNICOM, B2 circumferential welds described in chamber UNICOM of the 3rd UNICOM and the H2 through holes, i.e., described B are laterally logical Road and the air admission hole UNICOM, C2 circumferential welds and the D2 through holes described in the tetrad cavity UNICOM, i.e., described C interconnections with The D interconnections UNICOM；When first plunger rod is in low level, A2 through holes and B2 described in the chamber UNICOM of the second UNICOM Circumferential weld, i.e., described A interconnections and the B interconnections UNICOM, H2 through holes and the C2 described in chamber UNICOM of the 3rd UNICOM Circumferential weld, i.e., described air admission hole and the C interconnections UNICOM；
Second plunger bushing by the second epimere plunger bushing, the second stage casing plunger bushing and the second hypomere plunger bushing successively Docking is formed, and the one end of the second epimere plunger bushing away from second stage casing plunger bushing is threadedly coupled provided with the second epimere Portion, the one end of the second hypomere plunger bushing away from second stage casing plunger bushing is provided with the second hypomere threaded joints, described Second plunger bushing is fixed on second valve element by the second epimere threaded joints and the second hypomere threaded joints In hole；The inwall of one end that the second epimere plunger bushing is docked with second stage casing plunger bushing is circumferentially with epimere interior sealing Circle, the epimere inner seal ring forms the stage casing with the stage casing sealing station and sealed, and the second epimere plunger bushing outer wall is set Have and be provided with annular groove, the groove of the annular groove between two seal grooves for being used to install sealing ring, two seal grooves Wall and the inwall of second spool bore form the E ring cavities, and the cell wall of the annular groove is provided with E2 through holes；Described second Shape between the outer wall of the plunger bushing of stage casing plunger bushing and the second epimere plunger bushing joint and the inwall of second spool bore Into the F ring cavities, the end face that second stage casing plunger bushing is docked with the second epimere plunger bushing is provided with F2 perps, described Second segment plunger bushing is provided with close to the side outer wall of the second epimere plunger bushing is used to installing the seal groove of sealing ring, and described the One end i.e. plunger bushing of hypomere that two stage casing plunger bushings are docked with the second hypomere plunger bushing is interior with second spool bore The I ring cavities are formed between wall, the plunger bushing where the I ring cavities is provided with I2 through holes；The second hypomere plunger bushing with it is described The inwall of one end of the second stage casing plunger bushing docking is provided with hypomere inner seal ring, and the hypomere inner seal ring is sealed with the hypomere Platform forms hypomere sealing, and described the between the hypomere threaded joints and the second stage casing plunger bushing hypomere The outer wall of two hypomere plunger bushings is provided between two seal grooves for being used to install sealing ring, two seal grooves and is provided with annular groove, Formed between the cell wall of the annular groove and the inwall of second spool bore on the G ring cavities, the cell wall of the annular groove Provided with G2 through holes；
When second plunger rod is in upper level position, the epimere inner seal ring forms described with the stage casing sealing station Stage casing is sealed, and the hypomere inner seal ring is separated with the hypomere sealing station, and the G2 through holes and I2 through holes pass through the hypomere Chamber UNICOM of UNICOM, i.e. G interconnections and the regeneration UNICOM；When second plunger rod is in low order position, in the epimere Sealing ring is separated with the stage casing sealing station, the hypomere inner seal ring and hypomere sealing station formation hypomere sealing, described The UNICOM of E2 through holes and F2 perps, i.e. E interconnections and F interconnections described in chamber UNICOM of stage casing UNICOM.
Further, the combined directional valve also includes upper lid, lower cover and connecting portion, and the upper lid capping is close to described first Plunger end cap and the valve end of the second plunger end cap side, the upper lid are connected with the valve body by connecting portion；Under described Lid is sealed on the other end of the valve body, and the lower cover is connected with the valve body by connecting portion.
Further, it is respectively equipped with the first smooth chamber in the spool bore of side first and the second spool bore of the upper lid With the second smooth chamber, the side being connected with the described first smooth chamber is provided with the spiral shell coordinated with the first epimere threaded joints Line, the side being connected with the described second smooth chamber is provided with the screw thread coordinated with the second epimere threaded joints；Close to described First spool bore of lower cover and the port of the second spool bore are respectively arranged with and the first hypomere threaded joints and second The screw thread that hypomere threaded joints coordinate.
The beneficial effects of the present invention are：The operation principle of the drying system of the present invention is normal temperature, (loading is dry for pressure adsorption It is dry), normal temperature, normal pressure desorption (regeneration), 1. the first plunger rod is positioned at low level, and the second plunger rod is located at a high position, passes through valve inner Passage realize I tower adsorb II tower regeneration；2. then the second plunger rod of switching becomes low level from a high position, realizes that I tower, II tower are equal Pressure；3. switch the first plunger rod again and become high-order from low level, continue to realize that I tower, II tower are pressed；4. the second plunger is switched again by low Position is changed into high-order, realizes that I tower regenerates the absorption of II tower；5. switch the second plunger again and low level is changed into from a high position, realize that I tower, II tower are equal Pressure；6. switch the first plunger again and become low level from a high position, continue to realize that I tower, II tower are pressed；7. the second plunger is switched again by low level It is changed into high-order, realizes that initial I towers adsorb the regeneration of II tower；So circulate successively so that absorption drier normal work, this hair The switching of different passages is realized in bright combination and switching by the first plunger and the second plunger high-low-position, not only instead of original four The function of individual valve, while having, simple in construction, easy to operate, commutating period is short, swift advantage, simple to operate, action Accurately, automaticity is high, stable and reliable in work.
Brief description of the drawings
Fig. 1 is the right view of valve body in combined directional valve of the present invention.
Fig. 2 is the front view of valve body in combined directional valve of the present invention.
Fig. 3 is the left view of valve body in combined directional valve of the present invention.
Fig. 4 is valve body F-F sectional views in combined directional valve of the present invention.
Fig. 5 is the A-A sectional views of valve body in combined directional valve of the present invention.
Fig. 6 is the B-B sectional views of valve body in combined directional valve of the present invention.
Fig. 7 is the C-C sectional views of valve body in combined directional valve of the present invention.
Fig. 8 is the D-D sectional views of valve body in combined directional valve of the present invention.
Fig. 9 is the structural representation of the workflow 1 of drying system of the present invention.
Figure 10 is the structural representation of the workflow 2 of drying system of the present invention.
Figure 11 is the structural representation of the workflow 3 of drying system of the present invention.
Figure 12 is the structural representation of the workflow 4 of drying system of the present invention.
Figure 13 is the structural representation of the workflow 5 of drying system of the present invention.
Figure 14 is the structural representation of the workflow 6 of drying system of the present invention.
Figure 15 is the structural representation of the second plunger rod of the present invention.
Figure 16 is the structural representation of the first plunger rod of the present invention.
Figure 17 is the structural representation of the second plunger bushing of the present invention.
Figure 18 is the structural representation of the first plunger bushing of the present invention.
Figure 19 is the stereogram of the valve body of the present invention.
Figure 20 is the fundamental diagram of the drying system containing combined directional valve of the present invention.
The implication of label symbol is as follows in figure：
1-combined directional valve, 2-muffler, 3-controller, 4-inlet duct, 5-air-out apparatus
6-go up the tower of the tower of piping 7-I 8-II
The spool bore of 10-valve body 11-the first 12-the second spool bore, 13-air admission hole
131-H ring cavities, 132-H3 sections 14-142-I3 sections of hole 141-I ring cavities of regeneration
15-M venthole 16-N venthole 15-M ventholes, 16-N regenerates hole
17-upper lid, 18-lower cover
20-communication passage, 21-first longitudinal direction passage 22-second longitudinal direction passage
23-the three vertical passage
31-A interconnections, 311-A1 section 312-A ring cavities, 313-A3 section 314-A2 through holes
32-B interconnections, 321-B1 section 322-B ring cavities, 323-B3 section 324-B2 circumferential welds
33-C interconnections, 331-C1 section 332-C ring cavities, 333-C3 section 334-C2 circumferential welds
34-D interconnections, 341-D1 section 342-D ring cavities, 343-D3 section 344-D2 through holes
35-E interconnections, 351-E1 section 352-E ring cavities, 353-E3 section 354-E2 through holes
36-F interconnections, 361-F1 section 362-F ring cavities, 363-F3 section 364-F2 perps
37-G interconnections, 371-G1 section 372-G ring cavities, 373-G3 section 374-G2 through holes
41-the first the 412-the first stage casing of plunger bushing the 411-the first epimere plunger bushing plunger bushing
413-the first hypomere plunger bushing the 414-the first epimere threaded joints
415-the first hypomere threaded joints
42-the second the 422-the second stage casing of plunger bushing the 421-the second epimere plunger bushing plunger portion
423-the second hypomere plunger portion the 424-the second epimere threaded joints
425-the second hypomere threaded joints 426-sealing, 427-epimere inner seal ring
428-hypomere inner seal ring
51-the first plunger rod the 512-the first plunger channel of the 511-the first end cap
513-the first the 515-the second UNICOM of chamber of the 514-the first UNICOM of plunger hole chamber
516-the three UNICOM's chamber the 517-the tetrad 518-interior sealing of cavity portion
52-the second plunger rod the 522-the second plunger channel of the 521-the second end cap
523-the second 524-stage casing of plunger hole sealed step 525-hypomere sealed step
526-epimere UNICOM chamber, 527-stage casing, 528-hypomere of chamber UNICOM of UNICOM chamber
60-connecting portion
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.
Shown in reference picture 1~20, being somebody's turn to do the drying system containing combined directional valve includes inlet duct 4, air-out apparatus 5, two The individual drying tower 7 of drying tower I and II drying tower 8, muffler 2, upper piping 6, combined directional valve 1 in parallel, and controller 3, institute The air admission hole 13 for stating inlet duct 4 and the combined directional valve 1 is connected, the muffler 73 and the combined directional valve 1 Regeneration hole 14 is connected, and the M ventholes 15 and N ventholes 16 of the combined directional valve 1 connect I drying tower 7 and II drying respectively Upper piping 6, the upper connection of piping 6 air-out apparatus 5, institute are connected between the inlet end of tower 8, the outlet side of described two drying towers State control device device 3 and connect the inlet duct 4, combined directional valve 1, upper piping 6 and air-out apparatus 5 respectively, for controlling State inlet duct 4, combined directional valve 1, upper piping 6 and air-out apparatus 5 and realize the drying tower 8 of the I drying tower 7 and II alternating work Make；
As shown in figure 19, the combined directional valve 1, including valve body 10 and valve element, valve body 10 leads to provided with spool bore, UNICOM Road 20, connecting portion 60；
As shown in Fig. 2 the spool bore includes the first spool bore 11 and the second spool bore 12, the He of the first spool bore 11 Second spool bore 12 is arranged side by side on the valve body 10, and the spool bore 12 of the first spool bore 11 and second is open circles The axial direction of cylinder, the space for inside having the accommodating valve element, first spool bore 11 and second spool bore 12 is longitudinal direction, institute The UNICOM direction of the first spool bore 11 and the second spool bore 12 is stated for laterally；
As shown in Figures 1 to 3, the valve body 10 provided with air admission hole 13 and regeneration hole 14, the air admission hole 13 and it is described again The relative relative both sides end face for being divided into the valve body 10 in raw hole 14, the air admission hole 13 and the phase of the first spool bore 11 UNICOM, the regeneration hole 14 is connected with second spool bore 12, with the air admission hole 13 and regeneration hole on the valve body 10 End face where 14 is adjacent and axle with the spool bore 12 of the first spool bore 11 and second where on the parallel two sides of plane M ventholes 15 and N ventholes 16 are respectively equipped with, the air admission hole 13, regeneration hole 14, M ventholes 15 and N ventholes 16 are located at same On one section；
As shown in Fig. 4~8, the communication passage 20 is respectively first longitudinal direction passage 21, second longitudinal direction passage 22 and the 3rd Vertical passage 23, the communication passage 20 is hollow cylinder, and the communication passage 20 is arranged side by side in first spool bore 11 and the second valve body 10 between spool bore 12 inside, the orientation of the communication passage 20 and the arrangement side of the spool bore To in cross distribution, the M ventholes and the UNICOM of first longitudinal direction passage 21, the vertical passage 23 of N ventholes the 3rd It is logical；
As shown in Fig. 2,5~8, first spool bore 11 is laterally logical provided with A interconnections 31, B interconnections 32, C Road 33 and D interconnections 34, the A interconnections 31 and the UNICOM of second longitudinal direction passage 22, the B interconnections 32 and institute The UNICOM of the 3rd vertical passage 23, the C interconnections 33 and the UNICOM of first longitudinal direction passage 21 are stated, the D is laterally logical Road 34 and the UNICOM of second longitudinal direction passage 22；
As shown in Fig. 2,5~8, second spool bore 12 is laterally logical provided with E interconnections 35, F interconnections 36 and G Road 37, the E interconnections 35 and the UNICOM of first longitudinal direction passage 21, the F interconnections 36 and the described 3rd longitudinal direction are logical The UNICOM of road 23, the G interconnections 37 and the UNICOM of second longitudinal direction passage 22；
As shown in figure 5, the A interconnections 31 include being arranged in the relative position of the hole wall of the first spool bore 11 A1 sections 311 and A3 sections 313, wherein A3 sections 313 and the UNICOM of second longitudinal direction passage 22；
As shown in fig. 6, the B interconnections 32 include being arranged in the relative position of the hole wall of the first spool bore 11 B1 sections 321 and B3 sections 323, wherein B3 sections 323 and the UNICOM of the 3rd vertical passage 23；
As shown in fig. 7, the C interconnections 33 include being arranged in the relative position of the hole wall of the first spool bore 11 C1 sections 331 and C3 sections 333, wherein C3 sections 333 and the UNICOM of first longitudinal direction passage 21；
As shown in figure 8, the D interconnections 34 include being arranged in the relative position of the shown hole wall of first spool bore 11 D1 sections 341 and D3 sections 343, wherein D3 sections 343 and the UNICOM of second longitudinal direction passage 22；
As shown in figure 5, the E interconnections 35 include being arranged in the relative position of the hole wall of the second spool bore 12 E1 sections 351 and E3 sections 353, wherein E3 and the UNICOM of first longitudinal direction passage 21；
As shown in fig. 6, the F interconnections 36 include being arranged in the relative position of the hole wall of the second spool bore 12 F1 sections 361 and F3 sections 363, wherein F3 sections 363 and the UNICOM of the 3rd vertical passage 23；
As shown in figure 8, the G interconnections 37 include being arranged in the relative position of the hole wall of the second spool bore 12 G1 sections 371 and G3 sections 373, wherein G3 sections 373 and the UNICOM of second longitudinal direction passage 22；
As shown in Fig. 1,5~8, the A1 sections 311, B1 sections 321, C1 sections 331 and D1 sections 341 are arranged at the air admission hole On the half side hole wall of the first spool bore 11 where 13, the axis of the A1 sections 311, D1 sections 341 and air admission hole 13 and described the The axis of one spool bore 11 is all parallel and coplanar with the axis of second spool bore 12, A1 sections 311 and D1 sections 341 difference Positioned at the both sides up and down of the air admission hole 13, the B1 sections 321 and C1 sections 331 are located at the A1 sections 311, the and of D1 sections 341 respectively The both sides of the place straight line of air admission hole 13, the B1 sections 321 are located between the A1 sections 311 and the air admission hole 13, described B1 sections 321 are located between the air admission hole 13 and D1 sections 341 close to the one side where the N ventholes, the C1 sections 331 On hole wall, C1 sections 331 are close to the one side where the M ventholes；
As shown in Fig. 3,5~8, the E1 sections 351, F1 sections 361 and G1 sections 371 are arranged at the place of regeneration hole 14 On the half side hole wall of second spool bore 12, straight line and first spool bore where the regeneration hole 14 and G1 sections 371 11 is all parallel with the axle of second spool bore 12, and the G1 hole positions are in the lower section in the regeneration hole 14, the E1 sections 351 and F1 Section 361 is separately positioned on regeneration hole 14 and the both sides of the place straight line of G3 sections 373, and the F1 is located at the regeneration hole 14 Top, the F1 sections 361 are close to the one side where the N ventholes 16, and the E1 hole positions are described in the top in the F1 holes E1 sections 351 are close to the one side where the M ventholes 15；
As shown in figure 8, the D1 sections 341 and the G1 sections 371 are along first longitudinal direction passage 21, second longitudinal direction passage 22 and the Plane where the three's axis of three vertical passage 23 is symmetrical；As shown in Figures 1 to 3, the air admission hole 13 and the regeneration hole 14 is symmetrical along the plane where first longitudinal direction passage 21, second longitudinal direction passage 22 and the three's axis of the 3rd vertical passage 23； As shown in fig. 6, the B1 sections 321 are logical along first longitudinal direction passage 21, the longitudinal direction of second longitudinal direction passage 22 and the 3rd with the F1 sections 361 Plane where the three's axis of road 23 is symmetrical.
As shown in Figure 18,9~14, first plunger bushing 41 is by the first epimere plunger bushing 411, the first stage casing plunger bushing 412 and first hypomere plunger bushing 413 dock composition successively, the first epimere plunger bushing 411 is away from first stage casing plunger One end of set 412 is provided with the first epimere threaded joints 414, and the first hypomere plunger bushing 413 is away from first stage casing post One end of plug sleeve 412 is provided with the first hypomere threaded joints 415, the first epimere threaded joints 414 and described first First plunger bushing 41 is fixedly installed in first spool bore 11 by section threaded joints 415；First upper segment column Plug sleeve 411 is provided with two sealings 426, and the sealing 426 includes the seal groove for being used to install O-ring seal, two sealings Plunger bushing between groove is provided with an annular groove, shape between the inwall of the cell wall of the annular groove and first spool bore 11 Into A ring cavities 312, the cell wall of the annular groove is provided with A2 through holes 314, and the A2 through holes 314 have four and circumferentially uniform On the cell wall for being distributed in the annular groove；First stage casing plunger bushing 412 and the first epimere plunger bushing 411 and described It is equipped with the relative interface connect of first hypomere plunger bushing 413 on projection, first stage casing plunger bushing 412 and described first The plunger bushing outer wall of the joint of section plunger bushing 411 and the inwall formation B ring cavities 322 of first spool bore 11, described first The joint formation B2 circumferential welds 324 of stage casing plunger bushing 412 and the first epimere plunger bushing 411, first stage casing plunger bushing 412 form C rings with the plunger bushing outer wall of the joint of the first hypomere plunger bushing 413 with the inwall of first spool bore 11 Chamber 332, the joint C3 circumferential welds of first stage casing plunger bushing 412 and the first hypomere plunger bushing 413, first stage casing Plunger bushing 412 is provided with two sealings 426, and the sealing 426 includes the seal groove for being used to install O-ring seal, and two is close Plunger bushing between sealing groove is provided with an annular groove, between the inwall of the cell wall of the annular groove and first spool bore 11 Form the H2 through holes 132 set on H ring cavities 131131, the cell wall of the annular groove, the H2 through holes 132 there are four and circumferentially On the cell wall for being uniformly distributed in the annular groove；The first hypomere plunger bushing 413 is described provided with two sealings 426 The plunger bushing that sealing 426 is included between the seal groove for being used to install O-ring seal, two seal grooves is recessed provided with an annular D ring cavities 342, the groove of the annular groove are formed between the inwall of groove, the cell wall of the annular groove and first spool bore 11 Wall is provided with D2 through holes 344, and the D2 through holes 344 have four and are circumferentially uniformly distributed on the cell wall of the annular groove；
As shown in Figure 16,9~14, first plunger rod 51 is slidably installed in first plunger bushing 41, institute State the first plunger rod 51 close to one end of the epimere plunger bushing be provided with the first end cap 511, first plunger rod 51 it is another Opened up at the axle center at end on the first plunger channel 512 of the oriented side of first end cap 511 extension, first plunger rod 51 Provided with four interior sealing portions 518, the interior sealing portion 518 includes the annular groove for being used to install sealing ring, the annular groove both sides Wall formation boss, the first interior sealing portion, the second interior sealing portion, the 3rd interior sealing portion, the are sequentially formed from the first end cap end Four interior sealing portions, the 4th interior sealing portion is located at the one end of first plunger rod 51 away from first end cap 511, described First is formed between the plunger rod outer wall and the inwall of the first plunger bushing 41 of first end cap 511 and the first interior sealing part Second UNICOM's chamber 515, the 3rd UNICOM's chamber 516 and tetrad cavity 517 are sequentially formed between cavity 514, adjacent interior sealing portion 518, First plunger channel 512 extends to first UNICOM's chamber 514, and the first plunger hole is provided with the end face of first UNICOM's chamber 514 First UNICOM's chamber 514 described in 513 UNICOMs and first plunger channel 512；
As shown in Figure 11~13, when first plunger rod 51 is in a high position, described in the UNICOM of second UNICOM chamber 515 A2 through holes 314, i.e., A interconnections 31, B2 described in the UNICOM of the 3rd UNICOM's chamber 516 described in the described UNICOM of second UNICOM chamber 515 Circumferential weld 324 and the H2 through holes 132, i.e., described B interconnections 32 and the UNICOM of air admission hole 13, the tetrad cavity 517 C2 circumferential welds 334 described in UNICOM and the D2 through holes 344, i.e., described C interconnections 33 and the UNICOM of D interconnections 34；As schemed 9th, shown in 10,14, when first plunger rod 51 is in low level, the He of A2 through holes 314 described in the UNICOM of second UNICOM chamber 515 B2 circumferential welds 324, i.e., described A interconnections 31 and the UNICOM of B interconnections 32, H2 described in the UNICOM of the 3rd UNICOM's chamber 516 Through hole 132 and the C2 circumferential welds 334, i.e., described air admission hole 13 and the UNICOM of C interconnections 33；
As shown in Figure 17,9~14, second plunger bushing 42 is by the second epimere plunger bushing 421, the second stage casing plunger The hypomere plunger bushing 423 of set 422 and second is docked successively to be formed, and the second epimere plunger bushing 421 is away from second stage casing post One end of plug sleeve 422 is provided with the second epimere threaded joints 424, and the second hypomere plunger bushing 423 is away from second stage casing One end of plunger bushing 422 is provided with the second hypomere threaded joints 425, the second epimere threaded joints 424 and described second Second plunger bushing 42 is fixed in second spool bore 12 by hypomere threaded joints 425；The second epimere plunger The inwall of one end that set 421 is docked with second stage casing plunger bushing 422 is circumferentially with epimere inner seal ring 427, the epimere Inner seal ring 427 forms the stage casing with the stage casing sealing station 524 and sealed, and the outer wall of the second epimere plunger bushing 421 is provided with Two sealings 426, the sealing 426 includes being provided between the seal groove for being used to install sealing ring, two seal grooves Annular groove, the cell wall of the annular groove and the inwall formation E ring cavities 352 of second spool bore 12, the annular groove Cell wall be provided with E2 through holes 354, the E2 through holes 354 have four and are circumferentially uniformly distributed in the cell wall of the annular groove On；The outer wall and described second of second stage casing plunger bushing 422 and the plunger bushing of the joint of the second epimere plunger bushing 421 F ring cavities 362 are formed between the inwall of spool bore 12, second stage casing plunger bushing 422 is docked with the second epimere plunger bushing 421 End face be provided with F2 perps 364, the F2 perps 364 has four and is uniformly distributed in second stage casing plunger bushing 422 On end face, the second segment plunger bushing is provided with sealing 426 close to the side outer wall of the second epimere plunger bushing 421, described Sealing 426 includes the seal groove for being used to install sealing ring, second stage casing plunger bushing 422 and the second hypomere plunger bushing One end of 423 docking is that I ring cavities 141, the I ring cavities are formed between the plunger bushing of hypomere and the inwall of second spool bore 12 Plunger bushing where 141 is provided with I2 through holes 142, the I2 through holes 142 UNICOM corresponding with the regeneration hole 14I；Described second The inwall of one end that hypomere plunger bushing 423 is docked with second stage casing plunger bushing 422 is provided with hypomere inner seal ring 428, described Hypomere inner seal ring 428 and the formation hypomere sealing of hypomere sealing station 525 being arranged on the second plunger rod 52, positioned at the hypomere The outer wall of the second hypomere plunger bushing 423 between threaded joints and the hypomere of second stage casing plunger bushing 422 is provided with two Individual sealing 426, the sealing 426 includes recessed provided with annular between the seal groove for being used to install sealing ring, two seal grooves G ring cavities 372, the groove of the annular groove are formed between the inwall of groove, the cell wall of the annular groove and second spool bore 12 Wall is provided with G2 through holes 374, and the G2 through holes 374 have four and are circumferentially uniformly distributed on the cell wall of the annular groove；
As shown in Figure 15,9~14, second plunger rod 52 be slidably mounted with second plunger bushing 42, institute The one end for stating the second plunger rod 52 is provided with dismountable second end cap 521, and the other end of the plunger rod is offered at axle center The second plunger channel 522 extended to the side of the second end cap 521, the outer wall of second plunger rod 52 and second plunger bushing 42 Inwall formation three sections of UNICOM's chambers, from the end of the second end cap 521 be followed successively by epimere UNICOM chamber 526, stage casing UNICOM chamber 527 and under Duan Liantong chambers 528, the plunger rod where epimere UNICOM chamber 526 leads to provided with the second plunger hole 523 and second plunger The UNICOM of road 522, is provided with interior sealing portion 518, the interior sealing between stage casing UNICOM chamber 527 and hypomere UNICOM chamber 528 Portion 518 includes the annular groove for being used to install O-ring seal, and the cell wall of the annular groove both sides forms projection, the annular groove two Sealed step is equipped with the raised plunger rod in side, is stage casing sealing station 524, position positioned at the sealed step of stage casing UNICOM chamber 527 In hypomere UNICOM chamber 528 sealed step be hypomere sealing station 525, the stage casing sealing station 524 and hypomere sealing station 525 and institute Stage casing sealing and hypomere sealing, one end relative with hypomere sealing station 525 are formed between the inwall for stating the second plunger bushing 42 respectively The i.e. described one end of second plunger rod 52 away from second end cap 521 is provided with interior sealing portion 518；
As shown in Fig. 9,12, second plunger rod 52 be in upper level position when, the epimere inner seal ring 427 with it is described Stage casing sealing station 524 forms the stage casing sealing, and the hypomere inner seal ring 428 is separated with the hypomere sealing station 525, described G2 through holes 374 and I2 through holes 142 pass through the UNICOM of hypomere UNICOM chamber 528, i.e. G interconnections 37 and the regeneration UNICOM；Such as Shown in Figure 10,11,13,14, second plunger rod 52 be in low order position when, the epimere inner seal ring 427 with it is described in Section sealing station 524 is separated, the hypomere inner seal ring 428 and the hypomere sealing station 525 formation hypomere sealing, the stage casing connection The UNICOM of E2 through holes 354 and F2 through holes, i.e. E interconnections 35 and F interconnections 36 described in the UNICOM of cavity 527.
As shown in Fig. 9,19, the combined directional valve also includes upper lid 17, lower cover 18 and connecting portion 60, and the upper lid 17 is covered The end of valve body 10 close to the first plunger end cap 511 and the side of the second plunger end cap 521, the lower cover 18 is sealed on described The other end of valve body 10；The connecting portion 60 is sets the threaded connection hole of the both side ends of a valve body 10, and the upper lid 17 is with Also be provided with wanting the connecting hole that matches with the threaded connection hole on lid 18, by bolt by the upper lid 17 and lower cover 18 respectively with The both ends of the surface capping connection of the valve body 10.
Installed for the ease of processing by the diameter design of the diameter of the first spool bore 11 and second spool bore 12 into phase Together, it is respectively equipped with the first smooth chamber and second flat in side the first spool bore 11 and the second spool bore 12 of the upper lid 17 Sliding chamber, first end cap 511 and the first smooth chamber fit between face provided with a circle seal section, first end cap 511 slideably with the flat cylindrical wall intracavitary, and the face that second end cap 521 fits with the described second smooth chamber is provided with One circle sealing ring, second end cap 521 is slidably located on the flat cylindrical wall intracavitary；It is connected with the described first smooth chamber Side be provided with the first epimere threaded joints 414 coordinate screw thread, the side being connected with the described second smooth chamber is set There is the screw thread coordinated with the second epimere threaded joints 424；Close to the first spool bore and the second valve element of the lower cover 18 The port in hole is respectively arranged with what is coordinated with the first hypomere threaded joints 415 and the second hypomere threaded joints 425 Screw thread.
Referring to shown in accompanying drawing 9 to 14, the course of work of the drying system of the invention containing combined directional valve is as follows：
Flow 1：I tower 7 is adsorbed, and II tower 6 regenerates
As shown in figure 9, the first plunger rod 51 is in low level, the second plunger rod 52 is in a high position, the 3rd UNICOM's chamber 516 simultaneously UNICOM's air admission hole 13 and C interconnections 33, now gases at high pressure enter from air admission hole 13, it is horizontal to flow into C through the 3rd UNICOM's chamber 516 Passage 33, C interconnections 33 and the UNICOM of first longitudinal direction passage 21, the gas for flowing into C interconnections 33 enter first longitudinal direction passage 21, first longitudinal direction passage 21 and venthole UNICOM, the gas for flowing into first longitudinal direction passage 21 flow out from M ventholes 15, are flowed into I Tower 7；
Meanwhile, regeneration gas through II tower 8 from N ventholes 16 flow into valve body 10, the UNICOM's N ventholes of the 3rd vertical passage 23 and B interconnections 32, gas is through the 3rd vertical passage 23, into B interconnections 32, the UNICOM's B interconnections 32 of second UNICOM's chamber 515 With A interconnections 31, the gas into B interconnections 32 is through second UNICOM's chamber 515 inflow A interconnections 31, A interconnections 31 With the UNICOM of second longitudinal direction passage 22, the gas into A interconnections 31 flows into second longitudinal direction passage 22, second longitudinal direction passage 22 Logical G interconnections 37, the gas into second longitudinal direction passage 22 flows into G interconnections 37, and the UNICOM G of hypomere UNICOM chamber 528 is horizontal Passage 37 and regeneration hole 14I, the gas into G interconnections 37 through hypomere UNICOM chamber 528 flows into regeneration hole 14, and gas is from regeneration Hole 14I flows out, and realizes emptying；
Flow 2：I tower 7 has pressure, and II tower 8 boosts, and regeneration hole 14 stops exhaust (regeneration hole 14 is without gas)
As shown in Figure 10, controller 3 controls the second plunger rod 52 to be moved to low level, the UNICOM's air admission hole of the 3rd UNICOM's chamber 516 13 enter with C interconnections 33, now gases at high pressure from air admission hole 13, and C interconnections 33 are flowed into through the 3rd UNICOM's chamber 516, and C is horizontal To passage 33 and the UNICOM of first longitudinal direction passage 21, the gas for flowing into C interconnections 33 enters first longitudinal direction passage 21, first longitudinal direction Passage 21 respectively with venthole and the UNICOM of E interconnections 35, a part of gas flows into the gas of first longitudinal direction passage 21 from M outlets Hole is flowed out, and is flowed into I tower, and another part gas flows into E interconnections 35, and E interconnections 35 and F interconnections 36 pass through stage casing The UNICOM of UNICOM's chamber 527, regeneration hole 14I does not have gas, and the gas for flowing into E interconnections 35 enters F transverse directions through stage casing UNICOM chamber 527 Passage 36, the UNICOM's F interconnections 36 of the 3rd vertical passage 23 and N ventholes, flow into the gas of F interconnections 36 through the 3rd longitudinal direction Passage 23 flows into N ventholes 16, and the tower 8 of N ventholes UNICOM II, gas enters II tower 8；
Flow 3：I tower 7 has pressure, and II tower 8 boosts (regeneration hole 14I is without gas)
As shown in figure 11, controller 3 controls the first plunger rod 51 to be moved to a high position, the UNICOM's air admission hole of the 3rd UNICOM's chamber 516 13 and B interconnections 32, now gases at high pressure enter from air admission hole 13, flow into B interconnections 32 through the 3rd UNICOM's chamber 516, the The UNICOM's B interconnections 32 of three vertical passage 23, F interconnections 36 and N ventholes 16, flow into the gas one of B interconnections 32 N ventholes 16 are diverted into, the tower of 16 UNICOM of N ventholes II, the gas for flowing into N ventholes 16 flows into II tower 8, flows into B interconnections 32 another part gas flows into F interconnections 36, the UNICOM's F interconnections 36 of stage casing UNICOM chamber 527 and E interconnections 35, stream The gas for entering F interconnections 36 flows into E interconnections 35, the UNICOM's E interconnections 35 of first longitudinal direction passage 21 and M ventholes 15, The gas for flowing into E interconnections 35 flows into M ventholes 15, and the tower 7 of 15 UNICOM of M ventholes I, the gas for flowing into M ventholes 15 enters I Tower 7；
Flow 4：II tower 8 has pressure, and I tower 7 regenerates
As shown in figure 12, controller 3 controls the second plunger rod 51 to be moved to a high position, and the UNICOM B of the 3rd UNICOM's chamber 516 is laterally logical Road 32 and air admission hole 13H, gases at high pressure enter air admission hole 13H, and B interconnections 32, the 3rd longitudinal direction are flowed into through the 3rd UNICOM's chamber 516 UNICOM of the UNICOM B interconnections 32 of passage 23 and N ventholes 16, flow into the gas of B interconnections 32 through the 3rd vertical passage 23 from N Venthole 16 is discharged, the tower 8 of 16 UNICOM of N ventholes II, and the gas flowed out from N ventholes 16 enters II tower 8；
Regeneration gas enters M ventholes 15, the UNICOM's M ventholes 15 of first longitudinal direction passage 21 and C interconnections 33 from I tower 7, Gas from the outflow of N ventholes 16 is through the inflow C of first longitudinal direction passage 21 interconnections 33, and the UNICOM C of tetrad cavity 517 is laterally logical Road 33 and D interconnections 34, the gas for flowing into C interconnections 33 flow into D interconnections 34 through tetrad cavity 517, and second indulges To the UNICOM's D interconnections 34 of passage 22 and G interconnections 37, the gas for flowing into D interconnections 34 flows through second longitudinal direction passage 22 Enter G interconnections 37, the UNICOM's G interconnections 37 of hypomere UNICOM chamber 528 and regeneration hole 14, the gas of the inflow G interconnections 37 Body flows into regeneration hole 14 through hypomere UNICOM chamber 528, is flowed out from regeneration hole 14, realizes emptying；
Flow 5：II tower 8 has pressure, and I tower 7 regenerates, and regeneration gas stops exhaust (regeneration hole 14 is without gas)
As shown in figure 13, controller 3 controls the second plunger rod 52 to be moved to low level, the UNICOM's air admission hole of the 3rd UNICOM's chamber 516 13H and B interconnections 32, gases at high pressure enter from air admission hole 13, and B interconnections 32 are flowed into through the 3rd UNICOM's chamber 516, and the 3rd indulges To the UNICOM's B interconnections 32 of passage 23, F interconnections 36 and N ventholes 16, the gas part warp of B interconnections 32 is flowed into 3rd vertical passage 23 flows into N ventholes 16, and the tower 8 of 16 UNICOM of N ventholes II, the gas flowed out from N ventholes 16 flows into II tower 8；The gas another part for flowing into B interconnections 32 flows into F interconnections 36, stage casing UNICOM chamber 527 through the 3rd vertical passage 23 UNICOM's E interconnections 35 and F interconnections 36, the gas for flowing into F interconnections 36 are laterally logical through the inflow of stage casing UNICOM chamber 527 E Road 35, the UNICOM's E interconnections 35 of first longitudinal direction passage 21 and M ventholes 15, flow into the gas of E interconnections 35 through first longitudinal direction Passage 21 flows out from M ventholes 15, the tower 7 of 15 UNICOM of M ventholes I, and gas flows into I tower 7；
Flow 6：II tower 8 has pressure, and I tower 7 has pressure
As shown in figure 14, controller 3 controls the first plunger rod 51 to be moved to low level, the UNICOM's air admission hole of the 3rd UNICOM's chamber 516 13 enter with C interconnections 33, now gases at high pressure from air admission hole 13, and C interconnections 33 are flowed into through the 3rd UNICOM's chamber 516, and C is horizontal To passage 33 and the UNICOM of first longitudinal direction passage 21, the gas for flowing into C interconnections 33 enters first longitudinal direction passage 21, first longitudinal direction Passage 21 respectively with venthole and the UNICOM of E interconnections 35, a part of gas flows into the gas of first longitudinal direction passage 21 from M outlets Hole 15 is flowed out, and is flowed into I tower, and another part gas flows into E interconnections 35, and E interconnections 35 and F interconnections 36 are in The UNICOM of Duan Liantong chambers 527, regeneration hole 14 is without gas, and the gas for flowing into E interconnections 35 enters F horizontal strokes through stage casing UNICOM chamber 527 To passage 36, the UNICOM's F interconnections 36 of the 3rd vertical passage 23 and N ventholes 16 flow into the gas of F interconnections 36 through the 3rd Vertical passage 23 flows into N ventholes 16, and the tower 8 of 16 UNICOM of N ventholes II, gas enters II tower 8；
Flow 6 completes a work period after terminating, and constantly circulates the work period, can continuously obtain drying gas Body.

Claims (7)

1. a kind of drying system containing combined directional valve, it is characterised in that：The system includes inlet duct (4), air-out apparatus (5), two drying towers of drying tower I (7) and II drying tower (8) in parallel, muffler (2), upper pipings (6), combined directional valves (1), and controller (3), the inlet duct (4) and the air admission hole (13) of the combined directional valve (1) are connected, described to disappear The regeneration hole (14) of sound device (2) and the combined directional valve (1) is connected, the M ventholes (15) of the combined directional valve (1) and N ventholes (16) are connected between the inlet end of I drying tower (7) and II drying tower (8), the outlet side of described two drying towers respectively Piping (6) in connection, upper piping (6) the connection air-out apparatus (5), the controller (3) connects the inlet duct respectively (4), combined directional valve (1), upper piping (6) and air-out apparatus (5), for controlling the inlet duct (4), combined directional valve (1), upper piping (6) and air-out apparatus (5) realize I drying tower (7) and II drying tower (8) alternation；
The combined directional valve (1) includes valve body (10) and valve element, and the valve body (10) is provided with spool bore, communication passage (20)；
The spool bore includes the first spool bore (11) and the second spool bore (12), first spool bore (11) and described second Spool bore (12) is arranged side by side on the valve body (10)；First spool bore (11) and second spool bore (12) are empty Heart cylinder, the space for inside having the accommodating valve element；
The valve body (10) is divided provided with air admission hole (13) and regeneration hole (14), the air admission hole (13) and the regeneration hole (14) On the both sides end face of the valve body (10), the air admission hole (13) and the first spool bore (11) UNICOM, the regeneration Hole (14) and the second spool bore (12) UNICOM；
The communication passage (20) includes be arranged in order, the first longitudinal direction passage (21) that axis is parallel to each other and coplanar, second Vertical passage (22) and the 3rd vertical passage (23), the communication passage (20) are arranged at first spool bore (11) and described Valve body (10) between second spool bore (12) is internal, and M ventholes (15) and N ventholes are additionally provided with the valve body (10) (16), the M ventholes (15) and first longitudinal direction passage (21) UNICOM, the N ventholes (16) and the described 3rd longitudinal direction Passage (23) UNICOM；
A interconnections (31), B interconnections (32), C interconnections (33) are provided with first spool bore (11) from top to bottom With D interconnections (34), the A interconnections (31) and second longitudinal direction passage (22) UNICOM, the B interconnections (32) With the 3rd vertical passage (23) UNICOM, the C interconnections (33) and first longitudinal direction passage (21) UNICOM, the D Interconnection (34) and second longitudinal direction passage (22) UNICOM；
Second spool bore (12) is provided with E interconnections (35), F interconnections (36) and G interconnections (37), the E Interconnection (35) and first longitudinal direction passage (21) UNICOM, the F interconnections (36) and the 3rd vertical passage (23) UNICOM, the G interconnections (37) and second longitudinal direction passage (22) UNICOM；
The valve element includes the first plunger portion and the second plunger portion, and first plunger portion is installed on first spool bore (11) Interior, second plunger portion is installed in second spool bore (12)；
First plunger portion includes the first plunger rod (51) and the first plunger bushing (41), the fixed peace of first plunger bushing (41) Loaded in first spool bore (11), first plunger bushing (41) is provided with and is respectively used to A interconnections described in UNICOM (31), the passage of B interconnections (32), C interconnections (33), D interconnections (34) and air admission hole (13)；First plunger Bar (51) is slidably mounted in first plunger bushing (41), outer wall and first post of first plunger rod (51) Plug sleeve (41) is internally formed UNICOM's chamber, when first plunger rod (51) is in it is high-order when, the B interconnections (32) and enter Stomata (13) UNICOM, the C interconnections (33) and the D interconnections (34) UNICOM, when the first plunger rod (51) place When low level, the A interconnections (31) and B interconnections (32) UNICOM, the air admission hole (13) and the C interconnections (33) UNICOM；
Second plunger portion includes the second plunger bushing (42) and the second plunger rod (52), and second plunger bushing (42) is fixed on In second spool bore (12), second plunger bushing (42) is provided with and is respectively used to E interconnections (35), F described in UNICOM Interconnection (36), G interconnections (37) and the passage for regenerating hole (14), second plunger rod (52) are slidably mounted on In second plunger bushing (42), shape between the outer wall of second plunger rod (52) and the inwall of second plunger bushing (42) Into UNICOM's chamber, when second plunger rod (52) is in a high position, the outer wall of the second plunger rod (52) and second plunger bushing (42) G interconnections (37) described in the chamber UNICOM of UNICOM formed between inwall and regeneration hole (14)；When second plunger rod (52) UNICOM's chamber connection is formed when being in low level, between the inwall of the outer wall of the second plunger rod (52) and second plunger bushing (42) Lead to the E interconnections (35) and F interconnections (36).
2. the drying system as claimed in claim 1 containing combined directional valve, it is characterised in that：
The outer wall of first plunger bushing (41) and the inwall of first spool bore (11) are horizontal in the A interconnections (31), B Connection is respectively equipped with to the relative position where passage (32), C interconnections (33), D interconnections (34) and air admission hole (13) Lead to the A of the A interconnections (31), B interconnections (32), C interconnections (33), D interconnections (34) and air admission hole (13) First valve between ring cavity (312), B ring cavities (322), C ring cavities (332), D ring cavities (342) and H ring cavities (131), each ring cavity Be provided with sealing (426) between core bore (11) and first plunger bushing (41), A ring cavities (312) it is another away from other ring cavities Side is to be all provided with the downside of the opposite side i.e. D ring cavities (342) of upside and D ring cavities (342) away from other ring cavities of A ring cavities (312) There is sealing (426)；
First plunger rod (51) is slidably mounted in first plunger bushing (41), and the one of first plunger rod (51) End is provided with to be provided with the first end cap (511), the other end axle center of first plunger rod (51) prolongs to the first end cap (511) direction The first plunger channel (512) stretched, the outer wall of first plunger rod (51) and the inwall of first plunger bushing (41) are formed Four sections of UNICOM's chambers, first UNICOM's chamber (514), second UNICOM's chamber (515), the respectively are from first end cap (511) end Interior sealing portion (518) are provided between three UNICOM's chambers (516) and tetrad cavity (517), adjacent UNICOM's chamber, the tetrad cavity (517) end is that the other end of remote first end cap (511) of first plunger rod (51) is provided with interior sealing portion (518), first UNICOM chamber (514) and the first plunger channel (512) UNICOM；
When first plunger rod (51) is in a high position, A interconnections (31) described in second UNICOM chamber (515) UNICOM, B interconnections (32) described in 3rd UNICOM's chamber (516) UNICOM and the air admission hole (13), C described in tetrad cavity (517) UNICOM Interconnection (33) and the D interconnections (34)；When first plunger rod (51) is in low level, second UNICOM chamber (515) A interconnections (31) described in UNICOM and the B interconnections (32), air inlet described in the 3rd UNICOM's chamber (516) UNICOM Hole (13) and the C interconnections (33), D interconnections (34) described in tetrad cavity (517) UNICOM；
The outer wall of second plunger bushing (42) and the inwall of second spool bore (12) are horizontal in the E interconnections (35), F E interconnections described in UNICOM are respectively equipped with to the relative position where passage (36), G interconnections (37) and regeneration hole (14) (35), E ring cavities (352), F ring cavities (362), the G ring cavities of F interconnections (36), G interconnections (37) and regeneration hole (14) (372) it is provided between second spool bore (12) and I ring cavities (141), between each ring cavity and second plunger bushing (42) Sealing (426), is downside and the E rings of G ring cavities (372) positioned at the opposite side away from other ring cavities of the G ring cavities (372) of end The opposite side away from other ring cavities of chamber (352) is that sealing (426) is equipped with the upside of E ring cavities (352)；
One end of second plunger rod (52) be provided with dismountable second end cap (521), second plunger rod (52) it is another One end opens up the second plunger channel (522) that oriented second end cap (521) just extends, second plunger rod (52) at axle center Outer wall and second plunger bushing (42) inwall three sections of UNICOM's chambers of formation, be followed successively by from second end cap (521) end Duan Liantong chambers (526), stage casing UNICOM chamber (527) and hypomere UNICOM chamber (528), epimere UNICOM chamber (526) and described second Plunger channel (522) UNICOM, is provided with interior sealing portion between stage casing UNICOM chamber (527) and hypomere UNICOM chamber (528) (518) sealed step, is equipped with the plunger rod of the both sides of the interior sealing portion (518), positioned at the close of stage casing UNICOM chamber (527) Envelope step is stage casing sealing station (524), in the sealed step of hypomere UNICOM chamber (528) is hypomere sealing station (525), is described Stage casing sealing is formed between section sealing station (524) and the inwall of hypomere sealing station (525) and second plunger bushing (42) respectively With hypomere sealing, relative one end is second plunger rod (52) away from second end cap with hypomere sealing station (525) (521) one end is provided with interior sealing portion (518)；
When second plunger rod (52) is in upper level position, stage casing sealing is in sealing state, and hypomere sealing is in dislocation shape State, hypomere UNICOM chamber (528) UNICOM's G interconnections (37) and regeneration hole (14) UNICOM；Second plunger rod (52) when being in low order position, stage casing sealing is in misaligned state, and hypomere sealing is in sealing state, stage casing UNICOM chamber (527) E interconnections (35) described in UNICOM and F interconnections (36).
3. the drying system as claimed in claim 1 containing combined directional valve, it is characterised in that：
The A interconnections (31) include the A1 sections being arranged in the relative position of the first spool bore (11) hole wall (311) and A3 sections (313), wherein A3 sections with second longitudinal direction passage (22) UNICOM；
The B interconnections (32) include the B1 sections (321) being arranged in the relative position of the first spool bore (11) hole wall With B3 sections (323), wherein B3 sections (323) and the 3rd vertical passage (23) UNICOM；
The C interconnections (33) include the C1 sections (331) being arranged in the relative position of the first spool bore (11) hole wall With C3 sections (333), wherein C3 sections (333) and first longitudinal direction passage (21) UNICOM；
The D interconnections (34) include the D1 sections (341) being arranged in the relative position of shown first spool bore (11) hole wall With D3 sections (343), wherein D3 sections (343) and second longitudinal direction passage (22) UNICOM；
The E interconnections (35) include the E1 sections (351) being arranged in the relative position of the second spool bore (12) hole wall With E3 sections (353), wherein E3 and first longitudinal direction passage (21) UNICOM；
The F interconnections (36) include the F1 sections (361) being arranged in the relative position of the second spool bore (12) hole wall With F3 sections (363), wherein F3 sections (363) and the 3rd vertical passage (23) UNICOM；
The G interconnections (37) include the G1 sections (371) being arranged in the relative position of the second spool bore (12) hole wall With G3 sections (373), wherein G3 sections (373) and second longitudinal direction passage (22) UNICOM.
4. the drying system as claimed in claim 3 containing combined directional valve, it is characterised in that：
Described A1 sections (311), B1 sections (321), C1 sections (331) and D1 sections (341) are arranged at where the air admission hole (13) On the half side hole wall of first spool bore (11), described A1 sections (311), D1 sections (341), air admission hole (13), the first spool bore (11) Axis with the second spool bore (12) is parallel to each other and coplanar, and described A1 sections (311) and D1 sections (341) are located at the air inlet respectively The both sides up and down in hole (13), described B1 sections (321) and C1 sections (331) are located at A1 sections (311), D1 sections (341) and entered respectively The both sides of straight line where stomata (13), described B1 sections (321) are located between A1 sections (311) and the air admission hole (13), institute State the one side of B1 sections (321) where described N ventholes (16), described C1 section (331) positioned at the air admission hole (13) and On hole wall between described D1 sections (341), C1 sections (331) are close to the one side where the M ventholes (15)；
Described E1 sections (351), F1 sections (361) and G1 sections (371) are arranged at the second spool bore where the regeneration hole (14) (12) on half side hole wall, straight line and first spool bore (11) where the regeneration hole (14) and described G1 sections (371) All parallel with the axle of second spool bore (12), described G1 sections (371) are located at the lower section of the regeneration hole (14), described E1 sections (351) it is and F1 sections (361) are separately positioned on the both sides of regeneration hole (14) and described G3 sections (373) place straight line, and described F1 sections (361) it is located at the top of the regeneration hole (14), described F1 sections (361) are close to the one side where the N ventholes (16), institute The top that E1 sections (351) are located at F1 sections (361) is stated, described E1 sections (351) are close to the side where the M ventholes (15) Face；
Described D1 sections (341) are longitudinal along first longitudinal direction passage (21), second longitudinal direction passage (22) and the 3rd with described G1 sections (371) Plane where passage (23) three's axis is symmetrical, and the air admission hole (13) is logical along first longitudinal direction with the regeneration hole (14) Plane where road (21), second longitudinal direction passage (22) and the 3rd vertical passage (23) three's axis is symmetrical, described B1 sections (321) with described F1 sections (361) along first longitudinal direction passage (21), second longitudinal direction passage (22) and the 3rd vertical passage (23) three Plane where axis is symmetrical.
5. the drying system as claimed in claim 2 containing combined directional valve, it is characterised in that：
First plunger bushing (41) is by the first epimere plunger bushing (411), the first stage casing plunger bushing (412) and the first hypomere plunger Cover (413) docking composition successively, the one end of the first epimere plunger bushing (411) away from first stage casing plunger bushing (412) Provided with the first epimere threaded joints (414), the first hypomere plunger bushing (413) is away from first stage casing plunger bushing (412) one end is provided with the first hypomere threaded joints (415), the first epimere threaded joints (414) and described first First plunger bushing (41) is fixedly installed in first spool bore (11) by hypomere threaded joints (415)；Described One epimere plunger bushing (411) is provided with the plunger bushing between two seal grooves for being used to install O-ring seal, two seal grooves Provided with an annular groove, the A ring cavities, institute are formed between the inwall of the cell wall of the annular groove and first spool bore (11) The cell wall for stating annular groove is provided with A2 through holes；First stage casing plunger bushing (412) and the first epimere plunger bushing (411) The relative interface connect is provided with projection, first stage casing plunger bushing (412) and institute with the first hypomere plunger bushing (413) The plunger bushing outer wall of joint and the inwall of first spool bore (11) for stating the first epimere plunger bushing (411) form the B Ring cavity (322), first stage casing plunger bushing (412) and the joint formation B2 circumferential welds of the first epimere plunger bushing (411) (324), the plunger bushing outer wall of the joint of first stage casing plunger bushing (412) and the first hypomere plunger bushing (413) with The inwall of first spool bore (11) forms the C ring cavities (332), first stage casing plunger bushing (412) and described first The joint formation C2 circumferential welds (334) of hypomere plunger bushing (413), first stage casing plunger bushing (412) is used for provided with two The plunger bushing installed between the seal groove of O-ring seal, two seal grooves is provided with an annular groove a, the annular groove a's Form what is set on the H ring cavities (131), the cell wall of the annular groove a between cell wall and the inwall of first spool bore (11) H2 through holes (132)；The first hypomere plunger bushing (413) is provided with two seal grooves for being used to install O-ring seal, two Plunger bushing between seal groove is provided with an annular groove b, the cell wall of the annular groove b and first spool bore (11) The D ring cavities (342) are formed between inwall, the cell wall of the annular groove b is provided with D2 through holes (344)；
When first plunger rod (51) is in it is high-order when, A2 through holes described in second UNICOM chamber (515) UNICOM, i.e., described the A interconnections (31) described in bigeminy cavity (515) UNICOM, B2 circumferential welds (324) and institute described in the 3rd UNICOM's chamber (516) UNICOM H2 through holes (132) are stated, i.e., described B interconnections (32) and the air admission hole (13) UNICOM, tetrad cavity (517) UNICOM The C2 circumferential welds (334) and the D2 through holes (344), i.e., described C interconnections (33) and D interconnections (34) UNICOM； When first plunger rod (51) is in low level, A2 through holes and B2 circumferential welds described in second UNICOM chamber (515) UNICOM (324), i.e., described A interconnections (31) and the B interconnections (32) UNICOM, described in the 3rd UNICOM's chamber (516) UNICOM H2 through holes (132) and the C2 circumferential welds (334), i.e., described air admission hole (13) and the C interconnections (33) UNICOM；
Second plunger bushing (42) is by the second epimere plunger bushing (421), the second stage casing plunger bushing (422) and the second hypomere plunger Docking is formed set (423) successively, the one end of the second epimere plunger bushing (421) away from second stage casing plunger bushing (422) Provided with the second epimere threaded joints (424), the second hypomere plunger bushing (423) is away from second stage casing plunger bushing (422) one end is provided with the second hypomere threaded joints (425), the second epimere threaded joints (424) and described second Second plunger bushing (42) is fixed in second spool bore (12) by hypomere threaded joints (425)；On described second The inwall of one end that section plunger bushing (421) is docked with second stage casing plunger bushing (422) is circumferentially with epimere inner seal ring (427), the epimere inner seal ring (427) forms the stage casing with the stage casing sealing station (524) and sealed, second epimere Plunger bushing (421) outer wall is provided between two seal grooves for being used to install sealing ring, two seal grooves and is provided with annular groove C, the cell wall of the annular groove c and the inwall of second spool bore (12) form the E ring cavities (352), and the annular is recessed Groove c cell wall is provided with E2 through holes (354)；Second stage casing plunger bushing (422) and the second epimere plunger bushing (421) are right The F ring cavities (362), second stage casing are formed between the outer wall of the plunger bushing at the place of connecing and the inwall of second spool bore (12) The end face that plunger bushing (422) is docked with the second epimere plunger bushing (421) is provided with F2 perps (364), second stage casing Plunger bushing (422) is provided with the seal groove for being used for installing sealing ring, institute close to the side outer wall of the second epimere plunger bushing (421) State one end i.e. plunger bushing of hypomere that the second stage casing plunger bushing (422) docks with the second hypomere plunger bushing (423) with it is described The I ring cavities (141) are formed between the inwall of second spool bore (12), the plunger bushing where the I ring cavities (141) is logical provided with I2 Hole (142)；The inwall of one end that the second hypomere plunger bushing (423) is docked with second stage casing plunger bushing (422) is provided with Hypomere inner seal ring (428), the hypomere inner seal ring (428) forms the hypomere with the hypomere sealing station (525) and sealed, Between the second hypomere threaded joints (425) and second stage casing plunger bushing (422) hypomere described second under The outer wall of section plunger bushing (423) is provided between two seal grooves for being used to install sealing ring, two seal grooves and is provided with annular groove The G ring cavities (372), the annular are formed between the inwall of d, the cell wall of the annular groove d and second spool bore (12) The cell wall of grooves d is provided with G2 through holes (374)；
When second plunger rod (52) is in upper level position, the epimere inner seal ring (427) and the stage casing sealing station (524) the stage casing sealing is formed, the hypomere inner seal ring (428) separates with the hypomere sealing station (525), and the G2 leads to Hole (374) and I2 through holes (142) pass through the hypomere UNICOM chamber (528) UNICOM, i.e. G interconnections (37) and the regeneration hole (14) UNICOM；When second plunger rod (52) is in low order position, the epimere inner seal ring (427) seals with the stage casing Platform (524) is separated, and the hypomere inner seal ring (428) forms hypomere sealing, the stage casing connection with the hypomere sealing station (525) The connection of E2 through holes (354) and F2 perps (364), i.e. E interconnections (35) and F interconnections (36) described in cavity (527) UNICOM It is logical.
6. the drying system as claimed in claim 5 containing combined directional valve, it is characterised in that：The combined directional valve also includes Upper lid (17), lower cover (18) and connecting portion (60), upper lid (17) capping is close to the first plunger end cap (511) and second Valve body (10) end of plunger end cap (521) side, the upper lid (17) is connected with the valve body (10) by connecting portion (60)； The lower cover (18) is sealed on the other end of the valve body (10), and the lower cover (18) passes through connecting portion with the valve body (10) (60) connect.
7. the drying system as claimed in claim 6 containing combined directional valve, it is characterised in that：Close to the upper lid (17) The first smooth chamber and the second smooth chamber are respectively equipped with the spool bore of side first (11) and the second spool bore (12), with described first The connected side of smooth chamber is provided with the screw thread coordinated with the first epimere threaded joints (414), with the described second smooth chamber Connected side is provided with the screw thread coordinated with the second epimere threaded joints (424)；Close to the first of the lower cover (18) The port of spool bore and the second spool bore is respectively arranged with and the first hypomere threaded joints (415) and the second hypomere spiral shell The screw thread that line connecting portion (425) coordinates.
CN201510052014.2A 2015-01-30 2015-01-30 A kind of drying system containing combined directional valve Active CN104747753B (en)

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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei

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Address before: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei

Patentee before: HEFEI GENERAL MACHINERY Research Institute