CN1865739A - Control valve of freon packing container and method for manufacturing same - Google Patents
Control valve of freon packing container and method for manufacturing same Download PDFInfo
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- CN1865739A CN1865739A CN 200510069573 CN200510069573A CN1865739A CN 1865739 A CN1865739 A CN 1865739A CN 200510069573 CN200510069573 CN 200510069573 CN 200510069573 A CN200510069573 A CN 200510069573A CN 1865739 A CN1865739 A CN 1865739A
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Abstract
The invention discloses a valve pin combination which comprises a valve body 8, a gasket 9, a container connecting nut 10, outlet nozzle 13, a sealing pad 12, a screw cap 11, a plane cover 1, a handle 2, a beam ring 3, a position ring 4, a valve pin rod 5, an O-shape sealing ring and a piston 7. Wherein, the container connecting nut 10 is coaxially connected to one end of valve body 8; one end of outlet nozzle 13 is vertically connected to the side surface of valve body 8; the axial hole inside the valve body 8 has a valve pin combination matched with it; via rotating handle 2, the valve pin rod 5 is displaced to push the piston 7 to control the channel of outlet nozzle. The invention has better concentricity between the valve body and the valve pin; the valve body and the valve pin combination are assembled in one time; the valve body and outlet nozzle are made from non metal, with corrosion resistance; the piston and valve pin rod are separated. The invention has lower cost and wider application.
Description
Technical field
The invention belongs to the valve of pressurized container, particularly a kind of control valve and manufacture method thereof that is used for freon packing container.
Background technique
Its structure of freon packing container control valve of the prior art is made up of valve body and spool two-part, the valve body profile is a column, the valve body center is provided with axial hole, spool is made of handle, piston and valve core rod, valve core rod is provided with the annular groove of assembling " zero " RunddichtringO, " zero " RunddichtringO and annular groove are joined work, and a termination of valve core rod is provided with another termination of piston and is provided with handle, and handle, piston and valve core rod are one.Behind equipped " zero " RunddichtringO of the annular groove on the valve core rod, the piston of valve core rod and valve core rod termination is placed in the axial hole at valve body center, then valve body is shunk in the port extruding at valve core rod position, valve core rod and piston are fixed in the valve body, because valve core rod is formed by the thermoplastic injection, because thermoplastic non-refractory, valve core rod places the port of the axial hole rear valve body at valve body center can only select the cold hobbing retract port, therefore very easily cause damage to valve body or valve core rod, the concentricity of valve body and valve core rod surpasses permitted value, the port of valve body shrinks inhomogeneous easily splitting and easily causes internal injury to retain hidden danger, and complex process, operant level requires high, yield rate is low, security of products, stability and reliability do not guarantee, in addition, valve body must be made with metallic material, the valve body structure that metallic material is made firmly but not corrosion-resistant, chemical solution can react with metal ion behind the long-term contacting metal of some chemical solutions, destroy the chemical property of solution, particularly when the chemical solution of packing is not suitable for long-term and Metal Contact, this contradiction is just more apparent outstanding, for example, storing, fortune in transit, container is easy to fall down very, at this moment chemical solution just can be by the passage of valve body, touch the inwall of metal valve body, cause chemical solution and metal ion chemical action, the valve body of the control valve of present freon packing container of the prior art all manufactures with metallic material, not only all there is defective in the control valve product of freon packing container on material in the textural connection at present in sum, does not especially allow for the pressurized container of packing chemical product.
Summary of the invention
Purpose of the present invention at first provides a kind of control valve of freon packing container, and the spool of this control valve partly is an assemblying body, piston is non-repeated use according to existing international industry standard, and both piston and valve core rod were separated type.
Secondly purpose of the present invention provides a kind of manufacture method of control valve of freon packing container.
The technological scheme that the present invention addresses the aforementioned drawbacks employing is: a kind of control valve of freon packing container, comprise valve body, give vent to anger and chew, sealing gasket, nut, the end of chewing of giving vent to anger is connected with the valve body lateral vertical, the another port of chewing of giving vent to anger is provided with sealing gasket, give vent to anger and chew equipped nut, sealing gasket places nut inner chamber rear nut to chew with giving vent to anger and is screwed onto, it is characterized in that: the axial bore in valve body is provided with the spool assemblying body that is mated, the spool assemblying body is by flat cover, handle, beam ring, positioning ring, valve core rod, " zero " RunddichtringO and piston constitute, be nested with positioning ring successively on valve core rod top, beam ring, after being nested with handle, the termination inlays flat cover again, in the lower annular groove of valve core rod, be nested with " zero " RunddichtringO, at the lower end head position of valve core rod assembling piston, valve core rod with wherein spool assemblying body, " zero " RunddichtringO, piston, positioning ring places in the axial bore of valve body, realizes that by internal thread segment in the axial bore of valve body and the externally threaded rotation of the convex shoulder on the valve core rod relative displacement promotes the passage that piston control is given vent to anger and chewed.
Preferably, described valve body is waney cylindrical body, an end of valve body is provided with recessed shoulder outside thread body, on recessed shoulder outside thread body, be nested with the nut that packing ring and the valve body that is spirally connected are connected with container, the valve body side is provided with axial vertical the giving vent to anger of valve body and chews, give vent to anger to chew and be provided with the conocave plane with valve body side point of attachment, the valve body axial centre is provided with waney through hole, through hole is followed successively by to give vent to anger chews channel section, the piston control section, give vent to anger and chew connecting section, " zero " RunddichtringO seal section, internal thread segment, the positioning ring load segment, give vent to anger and chew channel section and packaging container UNICOM, work is joined in the termination of piston control section and piston, give vent to anger and chew connecting section and chew UNICOM with axial vertical giving vent to anger, " zero " RunddichtringO seal section cooperates with " zero " RunddichtringO, internal thread segment cooperates with the convex shoulder outside thread at valve core rod middle part and the helical thread portion of positioning ring, and the positioning ring load segment cooperates with the outer sidelight face portion of positioning ring.
Preferably, described flat cover is made of pedestal and the three-dimensional inserts of cross, and pedestal is the recessed circular plate in middle part, and the recessed plane in three-dimensional inserts of cross and pedestal middle part is connected as one.
Preferably, described handle is in-line or disc, the center portion of handle be provided with handle shaft to vertical through hole, the top of through hole is divided into circular hole, the bottom of through hole is divided into cubic hole, circular hole part cooperates with the pedestal of flat cover, and the annular groove at the cross groove position on cubic bore portion and the valve core rod cooperates.
Preferably, described beam ring is special-shaped side open type ring set, is provided with the ear post of protrusion and the anti-plate of the outer Eight characters of protrusion at the outer side surface of beam ring.
Preferably, described positioning ring is a sleeve-shaped, the outer side surface of positioning ring is made of light face portion and helical thread portion, the light face portion cooperates with the positioning ring load segment of valve body, helical thread portion cooperates with the internal thread segment of valve body, port part in the light face portion of positioning ring is provided with helical incline, and the positioning ring axial central through hole cooperates with the cylindricality of valve core rod.
Preferably, the middle part of described valve core rod is the convex shoulder outside thread, the axial both sides of convex shoulder outside thread are cylindricality, surface in one of them cylindricality of convex shoulder outside thread is provided with annular groove, the axial centre of cylindricality is provided with the counterbore of assembling piston, on convex shoulder outside thread another cylindricality wherein, be provided with the annular groove of assembling and positioning ring, the post ends oral area is provided with chamfering, be provided with cross groove from port part to the annular groove extending part, cross groove cooperates with the three-dimensional inserts of the cross on the flat cover.
Preferably, described piston is waney cylindrical, and middle of piston is a pedestal, and an end of pedestal is a piston column, and the termination of piston column is a spherical, and the other end of pedestal is the piston inserting column, and the counterbore of assembling piston cooperates on piston inserting column and the valve core rod.
The manufacture method of freon packing container control valve of the present invention is that a kind of control valve of freon packing container is characterized in that: the valve body of control valve, give vent to anger to chew by nonmetallic material and make.
Preferably, described nonmetallic material are plastics or pottery.
The present invention is owing to adopted above-mentioned structure and manufacture method beneficial effect thereof to be: the good concentricity that valve body cooperates with spool, valve body and the assembling of spool assemblying body are once finished, the defectives such as damage that cause in the valve body reducing process in the prior art valve body or valve core rod have been solved, spool is an assemblying body, each component of spool assemblying body cooperatively interact scientific and reasonable, the simple yield rate height of valve body and spool assemblying body processing and assembling, the stability and reliability of finished product is guaranteed, valve body, giving vent to anger to chew adopts the nonmetallic material manufacturing corrosion-resistant, piston and valve core rod are regulation and the requirement that separated type meets existing international industry standard, safety of the present invention, practical, cost is low, be easy to promote, can be used for the control valve of various dissimilar packaging containers widely, excellent its is the control valve of press packet packaging container such as freon packing container.
Description of drawings
Fig. 1 is the profile schematic representation that the present invention uses on freon packing container;
Fig. 2 is the left pseudosection of Fig. 1;
Fig. 3 is the three-dimensional profile schematic representation of Fig. 1;
Fig. 4 is an organigram of the present invention;
Fig. 5 is the plan view of Fig. 4;
Fig. 6 is a part structure decomposing schematic representation of the present invention;
Fig. 7 is a part D structure decomposing schematic representation of the present invention;
Fig. 8 is the main apparent structure schematic representation of flat cover of the present invention;
Fig. 9 is the plan view of Fig. 8;
Figure 10 is the stereogram of Fig. 8;
Figure 11 is the main apparent structure schematic representation of handle of the present invention;
Figure 12 is the plan view of Figure 11;
Figure 13 is the stereogram of Figure 11;
Figure 14 is the main apparent structure schematic representation of beam ring of the present invention;
Figure 15 is the plan view of Figure 14;
Figure 16 is the stereogram of Figure 14;
Figure 17 is the main apparent structure schematic representation of positioning ring of the present invention;
Figure 18 is the plan view of Figure 17;
Figure 19 is the stereogram of Figure 17;
Figure 20 is the main apparent structure schematic representation of valve core rod of the present invention;
Figure 21 is the left view of Figure 20;
Figure 22 is the top plan view of Figure 20;
Figure 23 is the stereogram of Figure 20;
Figure 24 is the main apparent structure schematic representation of piston of the present invention;
Figure 25 is the left view of Figure 24;
Figure 26 is the stereogram of Figure 24;
Figure 27 is the main apparent structure schematic representation of valve body of the present invention;
Figure 28 is the left view of Figure 27;
Figure 29 is the top plan view of Figure 27;
Figure 30 is the stereogram of Figure 27;
Figure 31 is valve body of the present invention and container attaching nut's a main apparent structure schematic representation;
Figure 32 is the left view of Figure 31;
Figure 33 is the stereogram of Figure 31;
Figure 34 is the main apparent structure schematic representation of nut of the present invention;
Figure 35 is the left view of Figure 34;
Figure 36 is the stereogram of Figure 34.
Embodiment
Figure of description is an optimal way of the invention process, further specifies the present invention below in conjunction with accompanying drawing.
Fig. 1-the 3rd, control valve of the present invention is at the user mode schematic representation of freon packing bottle, and wherein Fig. 1 is a plan view, and Fig. 2 is the left pseudosection of Fig. 1, and Fig. 3 is the three-dimensional profile schematic representation of Fig. 1.
Fig. 4-the 7th, the unitary construction of control valve of the present invention and connecting relation schematic representation thereof, the present invention is by valve body 8, packing ring 9, valve body and container coupling nut 10, give vent to anger and chew 13, sealing gasket 12, nut 11, and by flat cover 1, handle 2, beam ring 3, positioning ring 4, valve core rod 5, the spool assemblying body that " zero " RunddichtringO 6 and piston 7 are formed constitutes, packing ring 9, valve body and an end coaxial be connected of container coupling nut 10 with valve body 8, give vent to anger and chew an end of 13 and be connected with valve body 8 lateral vertical, give vent to anger and chew 13 another port and be provided with sealing gasket 12, give vent to anger and chew equipped nut 11 on 13, sealing gasket 12 places nut 11 inner chamber rear nuts 11 to chew 13 with giving vent to anger and is screwed onto, axial bore in valve body 8 is provided with the spool assemblying body that is mated, be nested with positioning ring 4 successively on valve core rod 5 tops, beam ring 3, after being nested with handle 2, the termination inlays flat cover 1 again, in the lower annular groove 5e of valve core rod 5, be nested with " zero " RunddichtringO 6, at the lower end head position of valve core rod 5 assembling piston 7, valve core rod 5 with wherein spool assemblying body, " zero " RunddichtringO 6, piston 7, positioning ring 4 places in the axial bore of valve body 8, is given vent to anger by rotation realization relative displacement promotion piston 7 controls of the convex shoulder outside thread 5c on internal thread segment 8d in the axial bore of valve body 8 and the valve core rod 5 and chews channel section 8i.
Shown in Fig. 8-10: flat cover 1 is made of pedestal 1b and the three-dimensional inserts 1a of cross, and pedestal 1b is the recessed circular plate in middle part, and the recessed plane 1c in the middle part of three-dimensional inserts 1a of cross and pedestal 1b is connected as one.
Shown in Figure 11-13: handle 2 is an in-line, the center portion of handle 2 is provided with and handle 2 axial vertical through holes, the top of through hole is divided into circular hole 2a, the bottom of through hole is divided into cubic hole 2b, circular hole 2a part cooperates with the pedestal 1b of flat cover 1, and cubic hole 2b partly cooperates with the annular groove 5a at cross groove 5j position on the valve core rod 5.
Shown in Figure 14-16: described beam ring 3 is special-shaped side open type ring set, is provided with the ear post 3a of protrusion and the anti-plate 3b of the outer Eight characters of protrusion at the outer side surface of beam ring 3.
Shown in Figure 17-19: positioning ring 4 is a sleeve-shaped, the outer side surface of positioning ring 4 is made of light face portion 4a and helical thread portion 4b, light face portion 4a cooperates with the positioning ring load segment 8c of valve body 8, helical thread portion 4b cooperates with the internal thread segment 8d of valve body 8, port part at the light face portion 4a of positioning ring 4 is provided with helical incline, and positioning ring 4 axial central through hole 4c cooperate with the cylindricality 5b of valve core rod 5.
Shown in Figure 20-23: the middle part of described valve core rod 5 is convex shoulder outside thread 5c, the axial both sides of convex shoulder outside thread 5c are cylindricality 5b, 5d, be provided with annular groove 5e on the surface of cylindricality 5d, the axial centre of cylindricality 5d is provided with the counterbore 5h of assembling piston, on cylindricality 5b, be provided with the annular groove 5a of assembling and positioning ring 4, cylindricality 5b port part 5f is provided with chamfering, be provided with cross groove 5j from port part 5f to annular groove 5a extending part, cross groove 5j cooperates with the three-dimensional inserts 1a of the cross on the flat cover 1.
Shown in Figure 24-26: described piston 7 is waney cylindrical body, the middle part of piston 7 is pedestal 7c, the end of pedestal 7c is piston column 7b, the termination of piston column 7b is spherical 7a, the other end of pedestal 7c is piston inserting column 7d, and piston inserting column 7d cooperates with the counterbore 5h of valve core rod 5 assembling pistons 7.
Shown in Figure 27-30: described valve body 8 is waney cylindrical body, an end of valve body 8 is provided with recessed shoulder outside thread body 8b, on recessed shoulder outside thread body 8b, be nested with packing ring 9 and be spirally connected valve body and container attaching nut 10, valve body 8 sides are provided with valve body 8 axial vertical giving vent to anger and chew 13, give vent to anger chew 13 with valve body 8 side points of attachment be provided with conocave plane 8a, valve body 8 axial centre are provided with waney through hole, through hole is followed successively by to give vent to anger chews channel section 8i, piston control section 8j, give vent to anger and chew connecting section 8f, " zero " RunddichtringO seal section 8e, internal thread segment 8d, positioning ring load segment 8c, give vent to anger and chew channel section 8i and packaging container UNICOM, piston control section 8j cooperates with the termination 7a of piston 7, give vent to anger and chew connecting section 8f and chew 13 UNICOMs with axial vertical giving vent to anger, " zero " RunddichtringO seal section 8e is with " zero seal RunddichtringO 6 cooperates; internal thread segment 8d cooperates with the convex shoulder outside thread 5c at valve core rod 5 middle parts and the helical thread portion 4b of positioning ring 4, and positioning ring load segment 8c cooperates with the outer sidelight face portion 4a of positioning ring 4.
Shown in Figure 31-33: the axial centre of valve body and container coupling nut 10 is provided with internal thread 10b, a port of valve body and container coupling nut 10 is provided with protruding ring 10a, and valve body cooperates with the recessed shoulder outside thread body 8b of valve body 8 with the internal thread 10b of container coupling nut 10.
Shown in Figure 34-36: nut 11 is the sleeve shape of a port closed, and the axial inwall of nut 11 is provided with screw thread 11a, and the external layer of nut 11 is provided with anti-skid design 11b.
The manufacture method of the control valve of freon packing container of the present invention is, the valve body 8 of control valve, gives vent to anger and chews 13 and be made of plastics.
Assembling of the present invention or connecting mode are valve bodies 8 and give vent to anger and chew 13 and be one, be nested with positioning ring 4 on valve core rod 5 tops, bottom at valve core rod 5 be nested with " zero " RunddichtringO 6 and the assembling piston 7 after with valve core rod 5, " zero " RunddichtringO 6, piston 7, positioning ring 4 places in the axial bore of valve body 8, be nested with beam ring 3 again on valve core rod 7 tops then, inlay flat cover 1 behind the handle 2, the internal thread segment 8b that drives convex shoulder outside thread 5c and the axial bore of valve body 8 on the valve core rod 5 of the axial bore of valve body 8 by rotatable handle 2 realizes that relative displacement promotes piston 7 and controls the channel section of giving vent to anger and chewing.
More than one embodiment of the present of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to be used to limit practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.
Claims (10)
1, a kind of control valve of freon packing container, comprise valve body, give vent to anger and chew, sealing gasket, nut, the end of chewing of giving vent to anger is connected with the valve body lateral vertical, the another port of chewing of giving vent to anger is provided with sealing gasket, give vent to anger and chew equipped nut, sealing gasket places nut inner chamber rear nut to chew with giving vent to anger and is screwed onto, it is characterized in that: the axial bore in valve body (8) is provided with the spool assemblying body that is mated, the spool assemblying body is by flat cover (1), handle (2), beam ring (3), positioning ring (4), valve core rod (5), " O " RunddichtringO (6) and piston (7) constitute, be nested with positioning ring (4) successively on valve core rod (5) top, beam ring (3), after being nested with handle (2), the termination inlays flat cover (1) again, on the lower annular groove (5e) of valve core rod (5), be nested with " O " RunddichtringO (6), at the lower end head position of valve core rod (5) assembling piston (7), valve core rod (5) with wherein spool assemblying body, " O " RunddichtringO (6), piston (7), positioning ring (4) places in the axial bore of valve body (8), controls the passage of giving vent to anger and chewing by the rotation realization relative displacement promotion piston (7) of internal thread segment (8d) in the axial bore of valve body (8) and the convex shoulder outside thread (5c) on the valve core rod (5).
2, the control valve of freon packing container according to claim 1, it is characterized in that: valve body (8) is waney cylindrical body, an end of valve body (8) is provided with recessed shoulder outside thread body (8b), on recessed shoulder outside thread body (8b), be nested with packing ring (9) and be spirally connected valve body and container attaching nut (10), valve body (8) side is provided with axial vertical the giving vent to anger of valve body (8) and chews (13), give vent to anger and chew (13) and valve body (8) side point of attachment and be provided with conocave plane (8a), valve body (8) axial centre is provided with waney through hole, through hole is followed successively by to give vent to anger chews channel section (8i), piston control section (8j), give vent to anger and chew connecting section (8f), " O " RunddichtringO seal section (8e), internal thread segment (8d), positioning ring load segment (8c), give vent to anger and chew channel section (8i) and packaging container UNICOM, piston control section (8j) cooperates with the termination (7a) of piston (7), give vent to anger and chew connecting section (8f) and chew (13) UNICOM with axial vertical giving vent to anger, " O " RunddichtringO seal section (8e) cooperates with " O " RunddichtringO (6), internal thread segment (8d) cooperates with the convex shoulder outside thread (5c) at valve core rod (5) middle part and the helical thread portion (4b) of positioning ring (4), and positioning ring load segment (8c) cooperates with the outer Side light face portion (4a) of positioning ring (4).
3, the control valve of freon packing container according to claim 1, it is characterized in that: flat cover (1) is made of pedestal (1b) and the three-dimensional inserts of cross (1a), pedestal (1b) is the recessed circular plate in middle part, and recessed plane (1c), the middle part of three-dimensional inserts of cross (1a) and pedestal (1b) is connected as one.
4, the control valve of freon packing container according to claim 1, it is characterized in that: handle (2) is in-line or disc, the center portion of handle (2) is provided with and the axial vertical through hole of handle (2), the top of through hole is divided into circular hole (2a), the bottom of through hole is divided into cubic hole (2b), circular hole (2a) part cooperates with the pedestal (1b) of flat cover (1), and cubic hole (2b) partly cooperates with the annular groove (5a) at cross groove (5j) position on the valve core rod (5).
5, the control valve of freon packing container according to claim 1 is characterized in that: beam ring (3) is special-shaped side open type ring set, is provided with the ear post (3a) of protrusion and the anti-plate of the outer Eight characters (3b) that protrudes at the outer side surface of beam ring (3).
6, the control valve of freon packing container according to claim 1, it is characterized in that: positioning ring (4) is sleeve-shaped, the outer Side face of positioning ring (4) is made of light face portion (4a) and helical thread portion (4b), light face portion (4a) cooperates with the positioning ring load segment (8c) of valve body (8), helical thread portion (4b) cooperates with the internal thread segment (8d) of valve body (8), port part in the light face portion (4a) of positioning ring (4) is provided with helical incline, and positioning ring (4) axial central through hole (4c) cooperates with the cylindricality (5b) of valve core rod (5).
7, the control valve of freon packing container according to claim 1, it is characterized in that: the middle part of valve core rod (5) is convex shoulder outside thread (5c), axial two Side of convex shoulder outside thread (5c) are cylindricality (5b, 5d), be provided with annular groove (5e) on the surface of cylindricality (5d), the axial centre of cylindricality (5d) is provided with the counterbore (5h) of assembling piston, on cylindricality (5b), be provided with the annular groove (5a) of assembling and positioning ring (4), cylindricality (5b) port part (5f) is provided with chamfering, be provided with cross groove (5j) from port part (5f) to annular groove (5a) extending part, the three-dimensional inserts of the cross on cross groove (5j) and the flat cover (1) (1a) cooperates.
8, the control valve of freon packing container according to claim 1, it is characterized in that: piston (7) is waney cylindrical body, the middle part of piston (7) is pedestal (7c), one end of pedestal (7c) is piston column (7b), the termination of piston column (7b) is spherical (7a), the other end of pedestal (7c) is piston inserting column (7d), and piston inserting column (7d) cooperates with the counterbore (5h) of valve core rod (5) assembling piston (7).
9, a kind of manufacture method of control valve of freon packing container is characterized in that: the valve body of control valve (8), give vent to anger and chew (13) and made by nonmetallic material.
10, the manufacture method of the control valve of freon packing container according to claim 9 is characterized in that: described valve body (8), the nonmetallic material of chewing (13) of giving vent to anger are plastics or pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510069573 CN1865739A (en) | 2005-05-16 | 2005-05-16 | Control valve of freon packing container and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510069573 CN1865739A (en) | 2005-05-16 | 2005-05-16 | Control valve of freon packing container and method for manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1865739A true CN1865739A (en) | 2006-11-22 |
Family
ID=37424846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510069573 Pending CN1865739A (en) | 2005-05-16 | 2005-05-16 | Control valve of freon packing container and method for manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1865739A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174553A (en) * | 2013-03-29 | 2013-06-26 | 无锡隆盛科技股份有限公司 | Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality |
-
2005
- 2005-05-16 CN CN 200510069573 patent/CN1865739A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174553A (en) * | 2013-03-29 | 2013-06-26 | 无锡隆盛科技股份有限公司 | Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality |
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