CN114700198B - Pneumatic injection valve - Google Patents
Pneumatic injection valve Download PDFInfo
- Publication number
- CN114700198B CN114700198B CN202210359551.1A CN202210359551A CN114700198B CN 114700198 B CN114700198 B CN 114700198B CN 202210359551 A CN202210359551 A CN 202210359551A CN 114700198 B CN114700198 B CN 114700198B
- Authority
- CN
- China
- Prior art keywords
- valve
- core rod
- valve core
- injection
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
Abstract
The invention relates to the technical field of fluid injection valves, and discloses a pneumatic injection valve, which comprises: the valve body is provided with a valve cavity, the side wall of the valve cavity is provided with a liquid inlet interface connected with a liquid supply pipeline, and one end of the valve body is provided with a jet hole communicated with the valve cavity; the valve core rod is arranged on the valve body in a sliding manner, one end of the valve core rod sequentially penetrates through the jet hole and the valve cavity and penetrates through the valve body, and a gap is formed between the inner wall of the jet hole and the outer wall of the valve core rod; the other end of the valve core rod is provided with an injection head which is matched with the injection hole; the pneumatic telescopic component is arranged at one end of the valve body, which is far away from the jet hole, and one end of the pneumatic telescopic component is connected with one end of the valve core rod, which is far away from the injector head; the pneumatic telescopic part can enable the spray head to enter and block the spray hole or enable the spray head to extend out of the spray hole. The device can continuously and annularly spray liquid, enlarge the range of spraying liquid flushing and reduce the dead angle of cleaning.
Description
Technical Field
The invention relates to the technical field of fluid injection valves, in particular to a pneumatic injection valve.
Background
The broad sense of the reaction kettle is that the container has a physical or chemical reaction, the heating, evaporation, cooling and low and high speed mixing functions required by the process are realized by the structural design and parameter configuration of the container, when viscous products are produced, the side wall, the bottom and the stirring device in the reaction kettle are remained, the remained materials can influence the quality of the next kettle product, particularly when the reaction kettle produces different products in succession, and in order to ensure the stability of the product quality, the kettle is cleaned when one kettle product is finished.
Therefore, the cleaning of the reaction kettle is a key technology which influences the quality of products, and the traditional technology usually adopts an alkali liquor soaking method or a high-pressure water spraying method to clean the reaction kettle. The high pressure water spraying method is generally to spray high pressure water onto the inner wall of the reaction vessel by passing a spray header through the top opening or feed port of the reaction vessel. In the prior art, water spray nozzles arranged on a spray header are all in a hole or groove structure arranged at intervals, and the operation surface of sprayed water flow is discontinuous and uneven, so that cleaning dead corners exist; and the angle of water flow spraying is fixed, the effect of flushing the area just by the water flow can be ensured, and the cleaning effect is limited because the area just below the area can not be directly flushed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a pneumatic injection valve which can continuously and annularly spray liquid, enlarge the spraying liquid flushing range and reduce the cleaning dead angle.
To achieve the above object, the pneumatic injection valve of the present invention comprises:
the valve comprises a valve body and a valve cavity, wherein a liquid inlet interface used for being connected with a liquid supply pipeline is arranged on the side wall of the valve cavity, and a jet hole is formed in one end of the valve body and communicated with the valve cavity;
the valve core rod is arranged on the valve body in a sliding mode, one end of the valve core rod sequentially penetrates through the jet hole and the valve cavity and penetrates through the valve body, and a gap is formed between the inner wall of the jet hole and the outer wall of the valve core rod; the other end of the valve core rod is provided with an injection head, and the injection head is matched with the injection hole; and
the pneumatic telescopic component is arranged at one end of the valve body, which is far away from the jet hole, and one end of the pneumatic telescopic component is connected with one end of the valve core rod, which is far away from the spray head; the pneumatic telescopic component can enable the spray head to enter and block the spray hole or enable the spray head to extend out of the spray hole.
In one embodiment, the injection head comprises a guide block and an elastic sealing block, wherein the guide block and the elastic sealing block are arranged on the valve core rod; the valve core rod is provided with a valve cavity, a valve core rod is arranged in the valve core rod, and the valve core rod is arranged in the valve cavity.
In one embodiment, the injection head further comprises a hard sealing block, the sealing block is arranged on the valve core rod and on one side, away from the guide block, of the elastic sealing block, and the hard sealing block and the orifice of the injection hole are respectively provided with hard sealing surfaces which are matched in a matching mode.
In one embodiment, the valve core rod and the pneumatic telescopic component are coaxially arranged in the telescopic direction, one end, far away from the injection head, of the valve core rod is in threaded connection with the pneumatic telescopic component, and a locking piece is further arranged at the connection position of the valve core rod and the pneumatic telescopic component and can lock the valve core rod and the pneumatic telescopic component.
In one embodiment, the valve core rod is slidably connected with one end of the valve body, which is far away from the injection hole, a sealing support module is arranged at the sliding connection position of the valve core rod and the valve body, and the sealing support module is sleeved outside the valve core rod and embedded on the valve body.
In one embodiment, a mounting hole is formed in one end, away from the injection hole, of the valve body, the mounting hole is coaxially arranged with the injection hole and communicated with the valve cavity, and a limiting part is arranged on the inner wall of one end, connected with the valve cavity, of the mounting hole; the sealing support module comprises a pressing ring, elastic sealing rings and a gland, the pressing ring and the elastic sealing rings are alternately arranged in an overlapped mode along the axial direction of the mounting hole, the gland is arranged at the opening of the mounting hole and matched with the pressing ring and the limiting portion to press the elastic sealing rings, and therefore the elastic sealing rings are connected with the outer wall of the valve core rod and the inner wall of the mounting hole in a sealing mode.
In one embodiment, the gland comprises a cover body and a cover plate, the cover body and the cover plate are respectively sleeved outside the valve core rod in a sliding manner, and one end of the cover body is inserted into the mounting hole and is abutted with an overlapping structure formed by the pressing ring and the elastic sealing ring; the cover plate is arranged at one end, far away from the mounting hole, of the cover body and is abutted to the cover body, and two contact surfaces, abutted to each other, of the cover body and the cover plate are spherical surfaces with the same radius.
In one embodiment, a sliding seal section is arranged on the valve core rod, one part of the sliding seal section is matched with the seal support module, the other part of the sliding seal section extends into the valve cavity, and the cross-sectional area of the sliding seal section is larger than that of the injection hole.
The pneumatic injection valve in the above embodiment has at least the following advantages:
(1) The jet head extends out of the jet hole to form an annular jet gap between the valve core rod and the jet hole, and the flowing liquid flows to the jet head from the annular gap and is guided by the jet head to be continuously jetted from all directions around the jet head, so that the cleaning dead angle is eliminated; the pneumatic telescopic part controls the valve core rod to slide, the distance between the injection head and the orifice of the injection hole is continuously changed, the direct flushing position of the flowing liquid can be changed, and the spraying liquid flushing range is enlarged.
(2) The elastic sealing block and the hard sealing block are matched with the inner wall of the injection hole and the orifice of the injection hole to jointly seal the injection hole, so that the sealing performance of the injection hole is improved. The valve core rod is in threaded connection with the pneumatic telescopic component, the distance between the hard sealing block and the pneumatic telescopic component can be adjusted, and the hard sealing block is prevented from being damaged or related parts due to overlarge contact stress at the position of an orifice of the injection orifice when the pneumatic telescopic component drives the hard sealing block to be close to the injection orifice.
(3) When the pneumatic telescopic component drives the valve core rod to slide so that the injection head enters the injection hole, the sliding sealing section synchronously slides out from the valve cavity through the sealing support module, and the cross section area of the sliding sealing section is larger than that of the injection hole, so that the volume of a cavity formed by combining the valve cavity and the injection hole is increased in the closing process of the pneumatic injection valve, and the fluid resistance of the injection head entering the injection hole is reduced.
(4) The cover body and the cover plate are abutted through spherical surfaces with equal radiuses, unbalance loading is avoided when the cover plate is installed, the cover body can be evenly stressed, the action force of the cover body on an overlapped structure formed by the pressing ring and the elastic sealing ring is evenly distributed in the circumferential direction of the valve core rod, and the sealing stability of the elastic sealing ring is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
FIG. 1 is a front cross-sectional view of a pneumatic injection valve provided in accordance with an embodiment of the present invention;
FIG. 2 is an enlarged view A of the pneumatic injection valve of FIG. 1;
FIG. 3 is a front partial view of the pneumatic injection valve of FIG. 1 in a closed state;
FIG. 4 is an enlarged view B shown in FIG. 3;
reference numerals:
1-a valve body, 11-a valve cavity, 12-a liquid inlet interface, 13-a jet hole, 14-a mounting hole, 15-a limiting part and 16-a sliding guide rod; 2-valve core rod, 21-sliding sealing section and 22-guide block; 3-spray head, 31-guide block, 311-guide surface, 32-elastic sealing block, 321-sealing surface, 33-hard sealing block, 4-pneumatic telescopic component, 5-locking piece, 6-sealing support module, 61-pressing ring, 62-elastic sealing ring, 63-pressing cover, 631-cover body and 632-cover plate.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
It is to be understood that, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Referring to fig. 1 to 4, a pneumatic injection valve according to an embodiment includes a valve body 1, a valve core rod 2, an injection head 3, and a pneumatic telescopic member 4. The device can continuously and annularly spray liquid, enlarge the range of spraying liquid flushing and reduce the dead angle of cleaning.
Specifically, referring to fig. 1 to 3, the valve body 1 is provided with a valve cavity 11. The side wall of the valve cavity 11 is provided with a liquid inlet interface 12 for connecting with a liquid supply pipeline. One end of the valve body 1 is provided with an injection hole 13, and the injection hole 13 is communicated with the valve cavity 11. The valve body 1 is used to support and mount the remaining components. In one embodiment, the valve chamber 11 is cylindrical. The injection hole 13 is provided coaxially with the valve chamber 11. Specifically, the injection hole 13 is a circular hole. It will be appreciated that the valve body 1 may be formed from a plurality of components assembled together.
The valve core rod 2 is arranged on the valve body 1 in a sliding way. One end of the valve core rod 2 passes through the injection hole 13 and the valve cavity 11 in sequence and penetrates through the valve body 1. A gap is arranged between the inner wall of the injection hole 13 and the outer wall of the valve core rod 2. The other end of the valve core rod 2 is provided with an injection head 3, and the injection head 3 is matched with the injection hole 13. Specifically, the valve core rod 2 is slidably connected with one end of the valve body 1 far away from the injection hole 13. And a sealing support module 6 is arranged at the sliding connection part of the valve core rod 2 and the valve body 1. The sealing support module 6 is sleeved outside the valve core rod 2 and embedded on the valve body 1. The seal support module 6 seals the valve core rod 2 and the valve body 1 when the valve core rod 2 slides relative to the valve body 1. In one embodiment, the valve core rod 2 is a cylindrical rod.
The pneumatic telescopic part 4 is arranged at one end of the valve body 1 far away from the jet hole 13. One end of the pneumatic telescopic part 4 is connected with one end of the valve core rod 2 far away from the injection head 3. The pneumatic telescopic member 4 can be extended and retracted to enable the ejection head 3 to enter and block the ejection holes 13, or to enable the ejection head 3 to extend out of the ejection holes 13. Specifically, the pneumatic telescopic part 4 may adopt a telescopic structure driven by a pneumatic cylinder or a pneumatic motor. In one embodiment, the pneumatic telescopic member 4 is a pneumatic cylinder, and a piston rod of the pneumatic cylinder is connected to the valve core rod 2. The cylinder body of the pneumatic cylinder is arranged outside the valve body 1. In one embodiment, a sliding guide rod 16 is further disposed at an end of the valve body 1 away from the injection hole 13, one end of the sliding guide rod 16 is connected to the valve body 1, and the other end of the sliding guide rod 16 extends out of the valve body 1 in parallel with the valve core rod 2. The valve core rod 2 is further provided with a guide block 22, and the guide block 22 is slidably sleeved on the sliding guide rod 16. The pneumatic telescopic part 4 is arranged at one end of the sliding guide rod 16 far away from the valve body 1. When the device is used, the pneumatic telescopic part 4 pushes the valve core rod 2 to enable the injection head 3 to extend out of the injection hole 13, so that an annular injection gap is formed between the valve core rod 2 and the injection hole 13, and flowing liquid flows to the injection head 3 from the annular gap and is guided by the injection head 3, so that the flowing liquid is continuously injected from all directions of the circumference of the injection head 3, and therefore, the cleaning dead angle is eliminated; the pneumatic telescopic part 4 controls the valve core rod 2 to slide, the distance between the spray head 3 and the orifice of the spray hole 13 is continuously changed, the direct flushing position of the flowing liquid can be changed, and the flushing range of the sprayed liquid is enlarged.
Referring to fig. 1 to 3 again, in one embodiment, an installation hole 14 is formed at an end of the valve body 1 away from the injection hole 13. The mounting hole 14 is provided coaxially with the injection hole 13 and communicates with the valve chamber 11. The inner wall of one end of the mounting hole 14 connected with the valve cavity 11 is provided with a limiting part 15. The seal support module 6 includes a pressing ring 61, an elastic seal ring 62, and a gland 63. The pressing rings 61 and the elastic sealing rings 62 are alternately arranged in an overlapping manner in the axial direction of the mounting hole 14. The gland 63 is arranged at the opening of the mounting hole 14 and cooperates with the pressing ring 61 and the limiting part 15 to press each elastic sealing ring 62, so that each elastic sealing ring 62 is hermetically connected with the outer wall of the valve core rod 2 and the inner wall of the mounting hole 14. The pressing ring 61, the elastic sealing ring 62 and the gland 63 are matched to ensure stable sealing when the valve core rod 2 slides. The elastic seal ring 62 may be a rubber-like seal ring. The pressing ring 61 is made of a material or a material combination with hardness higher than that of the elastic sealing ring 62, such as polytetrafluoroethylene, beryllium bronze, and the like. The limiting portion 15 is a protruding structure on the inner wall of the mounting hole 14, such as a continuous or discontinuous annular protrusion on the inner wall of the mounting hole 14. It can cooperate with gland 63 to compress tightly the overlapping structure that clamping ring 61 and elastic sealing ring 62 constitute. In one embodiment, the gland 63 includes a cover 631 and a cover plate 632. The cover 631 and the cover 632 are slidably disposed on the valve core rod 2. One end of the cover 631 is inserted into the mounting hole 14 and abuts against the overlapping structure of the pressing ring 61 and the elastic seal ring 62. Cover plate 632 is provided at one end of cover 631 remote from mounting hole 14, and abuts cover 631, and the contact surfaces of cover 631 and cover plate 632 abutting each other are spherical surfaces having the same radius. The cover body 631 and the cover plate 632 are abutted through spherical surfaces with equal radiuses, so that unbalance loading is avoided when the cover plate 632 is installed, the cover body 631 can be uniformly stressed, the acting force of the cover body 631 on an overlapped structure formed by the pressing ring 61 and the elastic sealing ring 62 is uniformly distributed in the circumferential direction of the valve core rod 2, and the sealing stability of the elastic sealing ring 62 is improved.
In one embodiment, the spool rod 2 is provided with a sliding seal section 21. One part of the sliding seal section 21 is fitted with the seal support module 6, the other part of the sliding seal section 21 extends into the valve chamber 11, and the cross-sectional area of the sliding seal section 21 is larger than that of the injection hole 13. When the pneumatic telescopic part 4 drives the valve core rod 2 to slide so that the injection head 3 enters the injection hole 13, the sliding sealing section 21 synchronously slides out from the valve cavity 11 through the sealing support module 6, and the cross section area of the sliding sealing section 21 is larger than that of the injection hole 13, so that the volume of a cavity formed by combining the valve cavity 11 and the injection hole 13 is increased in the closing process of the pneumatic injection valve, and the liquid flowing resistance of the injection head 3 entering the injection hole 13 is reduced.
Referring to fig. 1, 3 and 4, in one embodiment, the injector head 3 includes a guide block 31 and an elastic sealing block 32. A minute guide block 31 and an elastic seal block 32 are provided on the spool rod 2. One end of the guide block 31 close to the valve cavity 11 is provided with a tapered guide surface 311, and the small end of the guide surface 311 is close to the valve cavity 11. An elastic sealing block 32 is arranged at one end of the partial guide block 31 remote from the partial guide surface 311. The elastic seal block 32 is provided with a seal surface 321 disposed around the spool rod 2, and the seal surface 321 is in sealing engagement with the inner wall of the injection hole 13. In particular, the dispersion guide surface 311 is provided around the spool rod 2. The dispersion guide surface 311 disperses the fluid ejected from the ejection holes 13 in various directions distributed around the valve core rod 2, so that the ejected fluid is ejected in a continuous umbrella shape. The use of different tapers for the diverging surfaces 311 may allow for different spray angles for the fluid. In one embodiment, spray head 3 further includes a hard seal block 33. The sealing block is arranged on the valve core rod 2 and on the side of the elastic sealing block 32 far away from the guide block 31. The hard seal block 33 and the orifice of the injection hole 13 are provided with hard seal faces that are in a matching fit, respectively. It will be appreciated that the resilient sealing block 32 may be made of rubber or plastic material such as nitrile rubber, viton, teflon, etc., i.e., the resilient sealing block 32 is in soft sealing engagement with the mounting hole 14. The hard seal block 33 may be made of copper alloy, stainless steel, stellite, nickel-based alloy, or the like, i.e., a hard seal fit. In one embodiment, the guide block 31, the elastic sealing block 32 and the hard sealing block 33 are all circular ring structures. An installation section is arranged at one end, far away from the pneumatic telescopic component 4, of the valve core rod 2, partial threads are arranged on the installation section, the sub guide block 31 and the elastic sealing block 32 are sleeved on the installation section without the threads in an interference fit mode, and the hard sealing block 33 is installed on the installation section in a threaded mode, so that the elastic sealing block 32 is abutted to the sub guide block 31 and the hard sealing block 33 respectively. In one embodiment, the valve core rod 2 and the pneumatic telescopic component 4 are coaxially arranged in the telescopic direction. One end of the valve core rod 2 far away from the injection head 3 is in threaded connection with the pneumatic telescopic part 4. The connecting part of the valve core rod 2 and the pneumatic telescopic component 4 is also provided with a locking piece 5, and the locking piece 5 can lock the valve core rod 2 and the pneumatic telescopic component 4. Specifically, one end of the pneumatic telescopic member 4 is screwed and inserted on the guide block 22 of the valve core rod 2. The locking piece 5 is screwed on the pneumatic telescopic component 4 and is abutted with the guide block 22 to form a double-nut anti-loosening structure, and the valve core rod 2 and the pneumatic telescopic component 4 are locked. The elastic sealing block 32 and the hard sealing block 33 are matched with the inner wall of the injection hole 13 and the orifice of the injection hole 13 to jointly seal the injection hole 13, so that the sealing performance of the injection hole 13 is improved. The valve core rod 2 is in threaded connection with the pneumatic telescopic component 4, the distance between the hard sealing block 33 and the pneumatic telescopic component 4 can be adjusted, and the hard sealing block 33 and the orifice of the injection orifice 13 are prevented from being damaged due to overlarge contact stress when the pneumatic telescopic component 4 drives the hard sealing block 33 to be close to the injection orifice 13.
According to the pneumatic injection valve in the technical scheme, when the pneumatic injection valve is used, the pneumatic telescopic part 4 pushes the valve core rod 2 to enable the injection head 3 to extend out of the injection hole 13, so that an annular injection gap is formed between the valve core rod 2 and the injection hole 13, and the flowing liquid flows to the injection head 3 from the annular gap and is guided by the injection head 3, so that the flowing liquid is continuously injected from all directions of the circumference of the injection head 3, and therefore, a cleaning dead angle is eliminated; the pneumatic telescopic part 4 controls the valve core rod 2 to slide, the distance between the spray head 3 and the orifice of the spray hole 13 is continuously changed, the direct flushing position of the flowing liquid can be changed, and the flushing range of the sprayed liquid is enlarged.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (7)
1. A pneumatic injection valve, comprising:
the valve comprises a valve body and a valve cavity, wherein a liquid inlet interface used for being connected with a liquid supply pipeline is arranged on the side wall of the valve cavity, and a jet hole is formed in one end of the valve body and communicated with the valve cavity;
the valve core rod is arranged on the valve body in a sliding mode, one end of the valve core rod sequentially penetrates through the jet hole and the valve cavity and penetrates through the valve body, and a gap is formed between the inner wall of the jet hole and the outer wall of the valve core rod; the other end of the valve core rod is provided with an injection head, the injection head is matched with the injection hole and comprises a guide dividing block and an elastic sealing block, and the guide dividing block and the elastic sealing block are arranged on the valve core rod; a conical branch guide surface is arranged at one end, close to the valve cavity, of the branch guide block, the small end of the branch guide surface is arranged close to the valve cavity, the elastic sealing block is arranged at one end, far away from the branch guide surface, of the branch guide block, a sealing surface arranged around the valve core rod is arranged on the elastic sealing block, and the sealing surface is in sealing fit with the inner wall of the injection hole; the pneumatic telescopic component is arranged at one end of the valve body, which is far away from the jet hole, and one end of the pneumatic telescopic component is connected with one end of the valve core rod, which is far away from the spray head; the pneumatic telescopic component can enable the spray head to enter and block the spray hole or enable the spray head to extend out of the spray hole.
2. The pneumatic injection valve according to claim 1, wherein the injection head further includes a hard seal block provided on the valve core rod and on a side of the elastic seal block remote from the branch guide block, and hard seal surfaces that are fitted in conformity are provided at the hard seal block and the orifice of the injection hole, respectively.
3. The pneumatic injection valve according to claim 2, wherein the valve core rod is coaxially arranged with the pneumatic telescopic component in the telescopic direction, one end of the valve core rod, which is far away from the injection head, is in threaded connection with the pneumatic telescopic component, and a locking piece is further arranged at the connection position of the valve core rod and the pneumatic telescopic component, and the locking piece can lock the valve core rod and the pneumatic telescopic component.
4. The pneumatic injection valve according to any one of claims 1 to 3, wherein the valve core rod is slidably connected with one end of the valve body away from the injection hole, a sealing support module is arranged at the sliding connection position of the valve core rod and the valve body, and the sealing support module is sleeved outside the valve core rod and embedded on the valve body.
5. The pneumatic injection valve according to claim 4, wherein a mounting hole is formed in one end of the valve body, which is away from the injection hole, the mounting hole is coaxially arranged with the injection hole and is communicated with the valve cavity, and a limiting part is arranged on the inner wall of one end of the mounting hole, which is connected with the valve cavity; the sealing support module comprises a pressing ring, elastic sealing rings and a gland, the pressing ring and the elastic sealing rings are alternately arranged in an overlapped mode along the axial direction of the mounting hole, the gland is arranged at the opening of the mounting hole and matched with the pressing ring and the limiting portion to press the elastic sealing rings, and therefore the elastic sealing rings are connected with the outer wall of the valve core rod and the inner wall of the mounting hole in a sealing mode.
6. The pneumatic injection valve of claim 5, wherein the gland includes a cover body and a cover plate, the cover body and the cover plate are slidably sleeved outside the valve plug rod, and one end of the cover body is inserted into the mounting hole and abuts against an overlapping structure formed by the pressing ring and the elastic sealing ring; the cover plate is arranged at one end, far away from the mounting hole, of the cover body and is abutted to the cover body, and two contact surfaces, abutted to each other, of the cover body and the cover plate are spherical surfaces with the same radius.
7. The pneumatic injection valve according to claim 4, wherein a sliding seal section is provided on the valve core rod, a part of the sliding seal section is engaged with the seal support module, another part of the sliding seal section extends into the valve cavity, and the cross-sectional area of the sliding seal section is larger than that of the injection hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210359551.1A CN114700198B (en) | 2022-04-06 | 2022-04-06 | Pneumatic injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210359551.1A CN114700198B (en) | 2022-04-06 | 2022-04-06 | Pneumatic injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114700198A CN114700198A (en) | 2022-07-05 |
| CN114700198B true CN114700198B (en) | 2022-11-25 |
Family
ID=82173307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210359551.1A Active CN114700198B (en) | 2022-04-06 | 2022-04-06 | Pneumatic injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114700198B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5713521A (en) * | 1995-06-26 | 1998-02-03 | Scheffel; Bernd W. | Apparatus for intermittently atomizing a fluid |
| LU90847B1 (en) * | 2001-10-15 | 2003-05-20 | Wurth Paul Sa | Adjustable annular gap nozzle for washing a gas stream |
| JP2004225655A (en) * | 2003-01-27 | 2004-08-12 | Nissan Diesel Motor Co Ltd | Fuel injector of internal combustion engine |
| WO2010004838A1 (en) * | 2008-07-11 | 2010-01-14 | 株式会社 日立製作所 | Fuel injection valve and fuel injection device |
| CN103328810A (en) * | 2011-01-26 | 2013-09-25 | 罗伯特·博世有限公司 | Injection valve having a flow limiter |
| CN204276212U (en) * | 2014-10-29 | 2015-04-22 | 三一重型装备有限公司 | Nozzle and there is its development machine |
| CN104948367A (en) * | 2014-03-31 | 2015-09-30 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN206454833U (en) * | 2016-12-28 | 2017-09-01 | 遂宁华能机械有限公司 | A kind of anti-blocking atomizer |
| CN109433439A (en) * | 2018-10-15 | 2019-03-08 | 杨建林 | A kind of rotating cup spray gun of hand-held |
| CN111486251A (en) * | 2020-04-20 | 2020-08-04 | 黄新 | Start-stop switch for high-pressure cleaning machine |
| CN212524702U (en) * | 2020-05-11 | 2021-02-12 | 大连智云自动化装备股份有限公司 | Telescopic nozzle for cleaning of cleaning machine |
| CN112413140A (en) * | 2020-11-30 | 2021-02-26 | 邵伟芳 | But mud valve that self-cleaning's leakproofness is good |
| CN214763028U (en) * | 2021-05-10 | 2021-11-19 | 上海景文同安机电消防工程有限公司 | Energy-saving spray head for fire fighting |
-
2022
- 2022-04-06 CN CN202210359551.1A patent/CN114700198B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5713521A (en) * | 1995-06-26 | 1998-02-03 | Scheffel; Bernd W. | Apparatus for intermittently atomizing a fluid |
| LU90847B1 (en) * | 2001-10-15 | 2003-05-20 | Wurth Paul Sa | Adjustable annular gap nozzle for washing a gas stream |
| JP2004225655A (en) * | 2003-01-27 | 2004-08-12 | Nissan Diesel Motor Co Ltd | Fuel injector of internal combustion engine |
| WO2010004838A1 (en) * | 2008-07-11 | 2010-01-14 | 株式会社 日立製作所 | Fuel injection valve and fuel injection device |
| CN103328810A (en) * | 2011-01-26 | 2013-09-25 | 罗伯特·博世有限公司 | Injection valve having a flow limiter |
| CN104948367A (en) * | 2014-03-31 | 2015-09-30 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN204276212U (en) * | 2014-10-29 | 2015-04-22 | 三一重型装备有限公司 | Nozzle and there is its development machine |
| CN206454833U (en) * | 2016-12-28 | 2017-09-01 | 遂宁华能机械有限公司 | A kind of anti-blocking atomizer |
| CN109433439A (en) * | 2018-10-15 | 2019-03-08 | 杨建林 | A kind of rotating cup spray gun of hand-held |
| CN111486251A (en) * | 2020-04-20 | 2020-08-04 | 黄新 | Start-stop switch for high-pressure cleaning machine |
| CN212524702U (en) * | 2020-05-11 | 2021-02-12 | 大连智云自动化装备股份有限公司 | Telescopic nozzle for cleaning of cleaning machine |
| CN112413140A (en) * | 2020-11-30 | 2021-02-26 | 邵伟芳 | But mud valve that self-cleaning's leakproofness is good |
| CN214763028U (en) * | 2021-05-10 | 2021-11-19 | 上海景文同安机电消防工程有限公司 | Energy-saving spray head for fire fighting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114700198A (en) | 2022-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU784945B2 (en) | Spray gun with improved needle shut-off valve sealing arrangement | |
| US9073077B2 (en) | Spray gun | |
| US4974628A (en) | Check valve cartridges with controlled pressure sealing | |
| US20040124268A1 (en) | Spray gun with internal mixing structure | |
| KR20200091819A (en) | Pump for liquid product comprising a sealing device and spraying installation comprising such a pump | |
| CN114700198B (en) | Pneumatic injection valve | |
| US4126321A (en) | Packingless bellows seal | |
| US6267302B1 (en) | Spray gun with rolling wall diaphragm and quick disconnect housing | |
| US5339991A (en) | Apparatus for applying a foamable resin | |
| CN114599455A (en) | Spray applicator with fixed mixing chamber | |
| CN111989163A (en) | Split type liquid nozzle | |
| CN110801974B (en) | Coating spraying valve with nozzle cleaning and dredging functions | |
| CN219400629U (en) | Self-cleaning two-component spray gun capable of being mixed in gun for multiple times | |
| JP2009119352A (en) | Spray nozzle | |
| CN109723635B (en) | Reciprocating pump hydraulic end for injecting sand-containing medium in oil field | |
| CN111990876B (en) | A steam cooking equipment that is used for injection subassembly of steam cooking equipment and has it | |
| CN210386251U (en) | Sealing gun pull rod device with auxiliary mixing gas circuit | |
| CN212550090U (en) | Piston type spray head | |
| KR102355756B1 (en) | Spray gun | |
| KR200316508Y1 (en) | Injection nozzle for liquid spraying | |
| JP7437043B2 (en) | spray nozzle unit | |
| CN212856269U (en) | Spray gun head | |
| CN110159526B (en) | Drilling pump piston follow-up spray cooling structure | |
| CN218132615U (en) | Adjustable liquid fuel atomizing nozzle | |
| CN209577120U (en) | A kind of water-repellent paint spraying nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |