TWM603925U - High-sealing and high-pressure needle valve - Google Patents
High-sealing and high-pressure needle valve Download PDFInfo
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- TWM603925U TWM603925U TW109208804U TW109208804U TWM603925U TW M603925 U TWM603925 U TW M603925U TW 109208804 U TW109208804 U TW 109208804U TW 109208804 U TW109208804 U TW 109208804U TW M603925 U TWM603925 U TW M603925U
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Abstract
本新型涉及了一種高密封性高壓針閥，其包括閥體、閥杆、固定於閥杆末端的閥芯以及填料螺母。閥體包括沿其頂壁向上延伸而形成的閥杆安裝凸起部。另外，上述高壓針閥還包括佈置于閥杆孔的內部，且沿著上下方向依序套設於閥杆上的密封件、彈性件以及承力套。填料螺母旋合于閥杆孔的上部，且對密封件進行壓靠。在閥杆的側壁上設置有頂靠凸緣，用來實現對承力套的支撐。在密封件的下端面開設有V形凹槽。彈性件的下端頂靠於承力套，其上端插設於V形凹槽內。這樣一來，可有效地將作用於密封件的壓靠力控制在合理範圍值，防止密封件受到損傷，另外，更為重要的是，借助於V形凹槽的擴張運動來實現對閥杆的密封，具有較快的回應速度。 The model relates to a high-sealing high-pressure needle valve, which comprises a valve body, a valve stem, a valve core fixed at the end of the valve stem, and a packing nut. The valve body includes a valve stem mounting protrusion formed by extending upward along its top wall. In addition, the above-mentioned high-pressure needle valve further includes a sealing member, an elastic member and a bearing sleeve arranged inside the valve stem hole and sequentially sleeved on the valve stem along the up and down direction. The packing nut is screwed on the upper part of the valve stem hole and presses against the seal. An abutting flange is provided on the side wall of the valve stem for supporting the bearing sleeve. A V-shaped groove is opened on the lower end surface of the seal. The lower end of the elastic piece abuts against the bearing sleeve, and the upper end is inserted into the V-shaped groove. In this way, the pressing force acting on the seal can be effectively controlled within a reasonable range to prevent the seal from being damaged. In addition, more importantly, the expansion of the V-shaped groove is used to achieve the valve stem The seal has a faster response speed.
Description
本新型涉及高壓針閥製造技術領域，特別是涉及一種高密封性高壓針閥。 The model relates to the technical field of high-pressure needle valve manufacturing, in particular to a high-sealing high-pressure needle valve.
高壓針閥具有流體阻力小，結構簡單，緊湊，密封可靠，操作與維修方便，適用範圍廣等優點，被廣泛應用於機械、化工、石油等行業，其閥芯由閥杆進行帶動，並沿著閥杆軸線作升降運動，以實現閥門的開啟/閉合。 The high-pressure needle valve has the advantages of small fluid resistance, simple structure, compactness, reliable sealing, convenient operation and maintenance, and wide application range. It is widely used in machinery, chemical, petroleum and other industries. Its valve core is driven by the valve stem, and Move up and down along the axis of the valve stem to realize the opening/closing of the valve.
在現有技術中，閥杆的密封是由通過填料螺母沿密封填料的軸向進行擠壓，迫使密封填料沿其徑向發生形變，從而達到密封的目的(如圖1中所示)，但是存在以下問題：填料螺母壓緊力的大小對密封填料的密封性有著直觀重要的影響。當壓緊力過大時，會導致密封填料變形嚴重，影響密封的實際效果，更甚者，導致密封填料受損失效，且還會比可避免地導致密封填料與閥杆貼合力過緊，從而增大兩者的摩擦力，在一定程度上影響閥杆升降運動的靈敏性；且對其壓緊力進行調小操作時，密封填料需要較長的時間進行形狀回復，存在密封回應空檔期。當壓緊力過小時，則會導致密封填料變形量不夠，從而導致漏泄現象的發生。由此可知，此種密封方式實際密封效果不盡如人意，且具體操作存在較大的不確定性，因此，亟待技術人員解決上述問題。 In the prior art, the valve stem is sealed by squeezing the packing nut along the axial direction of the packing to force the packing to deform in the radial direction, so as to achieve the purpose of sealing (as shown in Figure 1), but there is The following question: The size of the packing nut compression force has an intuitive and important influence on the tightness of the packing. When the pressing force is too large, it will cause serious deformation of the sealing packing, which will affect the actual effect of the sealing. What's more, it will cause the sealing packing to be damaged and invalid, and it will also cause the sealing packing and the valve stem to be too tight, thus Increasing the friction between the two will affect the sensitivity of the valve stem's lifting movement to a certain extent; and when the pressing force is reduced, the sealing packing takes a long time to recover its shape, and there is a gap in the sealing response. . When the pressing force is too small, the deformation of the sealing packing will be insufficient, which will lead to leakage. It can be seen that the actual sealing effect of this sealing method is not satisfactory, and the specific operation has greater uncertainty. Therefore, technical personnel are urgently required to solve the above problems.
本新型要解決的技術問題是提供一種結構設計簡單的高密封性，回應速度快的高壓針閥。 The technical problem to be solved by the new model is to provide a high-pressure needle valve with simple structure design, high sealing performance and fast response speed.
為了解決上述技術問題，本新型涉及了一種高密封性高壓針閥，其包括閥體、閥杆、閥芯、填料螺母以及手柄。閥體包括沿其頂壁向上延伸而形成的閥杆安裝凸起部。在該閥杆安裝凸起部的內部開設有供閥杆***的閥杆孔。在閥體的左、右側，沿著與閥杆孔中心軸線相正交的方向設置有一個介質進口和一個介質出口。在閥體的內部、閥杆孔的正下方設置有過渡腔，用來連通介質進口和介質出口。閥芯固定於閥杆的末端，通過其位置的改變來實現過渡腔開啟/閉合狀態的轉換。另外，上述閥體還包括佈置于閥杆孔的內部，且沿著上下方向依序套設於閥杆上的密封件、彈性件以及承力套。填料螺母旋合于閥杆孔的上部，且對密封件進行壓靠。在閥杆的側壁上設置有頂靠凸緣，用來實現對承力套的支撐。在密封件的下端面開設有V形凹槽。彈性件的下端頂靠於承力套，其上端插設於V形凹槽內。 In order to solve the above technical problems, the present invention relates to a high-sealing high-pressure needle valve, which includes a valve body, a valve stem, a valve core, a packing nut and a handle. The valve body includes a valve stem mounting protrusion formed by extending upward along its top wall. A valve stem hole for inserting the valve stem is opened inside the valve stem mounting protrusion. On the left and right sides of the valve body, a medium inlet and a medium outlet are arranged along the direction orthogonal to the central axis of the valve stem hole. A transition cavity is provided in the inside of the valve body and directly below the valve stem hole for connecting the medium inlet and the medium outlet. The valve core is fixed at the end of the valve stem, and the transition cavity is switched on/off by changing its position. In addition, the valve body further includes a sealing element, an elastic element and a bearing sleeve arranged inside the valve stem hole and sequentially sleeved on the valve stem along the up and down direction. The packing nut is screwed on the upper part of the valve stem hole and presses against the seal. An abutting flange is provided on the side wall of the valve stem for supporting the bearing sleeve. A V-shaped groove is opened on the lower end surface of the seal. The lower end of the elastic piece abuts against the bearing sleeve, and the upper end is inserted into the V-shaped groove.
作為上述技術方案的進一步改進，上述密封件由高耐疲勞性橡膠制得。 As a further improvement of the above-mentioned technical solution, the above-mentioned seal is made of rubber with high fatigue resistance.
作為上述技術方案的進一步改進，在V形凹槽的底部設置有弧形過渡圓弧。 As a further improvement of the above technical solution, an arc-shaped transition arc is provided at the bottom of the V-shaped groove.
作為上述技術方案的進一步改進，在閥杆的末端開設有容納腔，用來插設閥芯。在容納腔的頂部、閥芯的正上方設置有彈性橡膠球。 As a further improvement of the above technical solution, a receiving cavity is opened at the end of the valve stem for inserting the valve core. Elastic rubber balls are arranged on the top of the containing cavity and directly above the valve core.
作為上述技術方案的進一步改進，閥芯的下端部設置為上大 下小的錐形，相對應地，與之相適配的過渡腔亦設置為錐形。 As a further improvement of the above technical solution, the lower end of the valve core is set to The lower cone is smaller, and correspondingly, the transition cavity adapted to it is also set in a cone.
作為上述技術方案的更進一步改進，上述高密封性高壓針閥還包括密封圈，相應在，在閥芯的錐形側壁上開設有用來對其進行容納的環形安裝槽。 As a further improvement of the above-mentioned technical solution, the above-mentioned high-tightness and high-pressure needle valve further includes a sealing ring, and correspondingly, an annular installation groove is provided on the tapered side wall of the valve core to accommodate it.
作為上述技術方案的進一步改進，上述彈性件優選為柱狀彈簧。 As a further improvement of the above technical solution, the above elastic member is preferably a cylindrical spring.
作為上述技術方案的進一步改進，手柄由沿上下方向依序佈置的旋動部以及連接部構成，其中，在連接部的側壁上開設有螺紋孔，以借助於手柄固定螺釘實現與閥杆的固定，相應地，在閥杆的對應位置設置有頂靠削平面。 As a further improvement of the above technical solution, the handle is composed of a rotating part and a connecting part arranged in order along the up and down direction, wherein a threaded hole is opened on the side wall of the connecting part to achieve fixation with the valve stem by means of a handle fixing screw , Correspondingly, the corresponding position of the valve stem is provided with a supporting cut plane.
作為上述技術方案的更進一步改進，在旋動部的側壁上設置有增摩擦凹槽。增摩擦凹槽的數量設置為多條，且沿著旋動部的中心軸線進行周向均布。 As a further improvement of the above technical solution, a friction increasing groove is provided on the side wall of the rotating part. The number of friction increasing grooves is set to be multiple, and they are evenly distributed in the circumferential direction along the central axis of the rotating part.
相較于傳統設計結構的高壓針閥，在本新型所公開的技術方案中，借助於彈性件與密封件的相互配合來實現對閥杆的密封，從而可有效地將作用於密封件的壓靠力控制在合理範圍值，防止其自身受到損傷，確保其密封件的使用壽命，降低後期維護頻率。另外，更為重要的是，隨著彈性件彈性力的增大，其***V形凹槽深度的增加，V形凹槽的擴張變形量亦逐漸增大，從而迅速地實現了對閥杆的密封，這樣一來，具有較快的回應速度，確保高壓針閥具有較好的密封可靠性。 Compared with the high-pressure needle valve of the traditional design structure, in the technical solution disclosed in the present invention, the valve stem is sealed by the cooperation of the elastic member and the sealing member, so that the pressure acting on the sealing member can be effectively reduced. Rely on control in a reasonable range value to prevent damage to itself, ensure the service life of its seals, and reduce the frequency of subsequent maintenance. In addition, more importantly, as the elastic force of the elastic element increases, the depth of its insertion into the V-shaped groove increases, and the expansion and deformation of the V-shaped groove gradually increase, thereby quickly realizing the valve stem. Sealing, in this way, has a faster response speed, ensuring that the high-pressure needle valve has a better sealing reliability.
1:閥體 1: Valve body
11:閥杆安裝凸起部 11: Valve stem installation protrusion
111:閥杆孔 111: Stem hole
12:介質進口 12: Medium inlet
13:介質出口 13: Medium outlet
14:過渡腔 14: Transition cavity
15:密封件 15: Seal
151:V形凹槽 151: V-shaped groove
16:彈性件 16: elastic parts
17:承力套 17: bearing sleeve
2:閥杆 2: Valve stem
21:頂靠凸緣 21: against flange
22:容納腔 22: receiving cavity
23:頂靠削平面 23: Lean against the cut plane
3:閥芯 3: Spool
4:填料螺母 4: Packing nut
5:手柄 5: handle
51:旋動部 51: Rotating part
511:增摩擦凹槽 511: Friction increasing groove
52:連接部 52: connecting part
6:彈性橡膠球 6: Elastic rubber ball
7:密封圈 7: Sealing ring
8:手柄固定螺釘 8: Handle fixing screw
圖1是現有技術中高壓針閥的結構示意圖。 Figure 1 is a schematic view of the structure of a high-pressure needle valve in the prior art.
圖2是本新型中高密封性高壓針閥第一種實施方式的結構示意圖。 Fig. 2 is a schematic structural view of the first embodiment of the new high-sealing high-pressure needle valve of the present invention.
圖3是圖2的I局部放大圖。 Fig. 3 is a partial enlarged view of I in Fig. 2.
圖4是本新型中高密封性高壓針閥第二種實施方式的結構示意圖。 Fig. 4 is a schematic structural view of a second embodiment of the new high-sealing and high-pressure needle valve of the present invention.
圖5是本新型高密封性高壓針閥中密封件的立體示意圖。 Fig. 5 is a three-dimensional schematic diagram of the sealing element in the high-sealing high-pressure needle valve of the present invention.
圖6是本新型高密封性高壓針閥中手柄的結構示意圖。 Figure 6 is a structural diagram of the handle in the new high-tightness and high-pressure needle valve.
在本新型的描述中，需要理解的是，術語“上”、“下”、“左”、“右”等指示的方位或位置關係為基於附圖所示的方位或位置關係，僅是為了便於描述本新型和簡化描述，而不是指示或暗示所指的裝置或元件必須具有特定的方位、以特定的方位構造和操作，因此不能理解為對本新型的限制。 In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for It is convenient to describe and simplify the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.
下面結合實例對本新型所公開的技術方案進行說明，圖2示出了本新型中高密封性高壓針閥第一種實施方式的結構示意圖，其主要由閥體1、閥杆2、閥芯3、填料螺母4以及手柄5等幾部分構成。其中，閥體1包括沿其頂壁向上延伸而形成的閥杆安裝凸起部11，且在該閥杆安裝凸起部11的內部開設有供閥杆***的閥杆孔111。在閥體1的左、右側，沿著與閥杆孔111中心軸線相正交的方向設置有一個介質進口12和一個介質出口13。在閥體1的內部、閥杆孔111的正下方設置有過渡腔14，用來連通上述介質進口12和介質出口13。閥芯3固定於閥杆2的末端，其跟隨閥杆2沿上下方向進行運動以實現上述過渡腔14開啟/閉合狀態的轉換，從而實現介質進口12與介質出口13的連通與否。另外，上述閥體1還包括佈置于閥杆孔111
的內部，且沿著上下方向依序套設於閥杆2上的密封件15、彈性件16以及承力套17。填料螺母4旋合于閥杆孔111的上部，且對密封15件進行壓靠。在閥杆2的側壁上設置有頂靠凸緣21，用來實現對上述承力套17形成支撐。在密封件15的下端面開設有V形凹槽151(如圖5中所示)。彈性件16的下端頂靠於承力套17，其上端插設於V形凹槽151內。在本新型所公開的技術方案中，借助於彈性件16與密封件15的相互配合來實現對閥杆2的密封，從而可有效地將作用於密封件15的壓靠力控制在合理範圍值，防止其自身受到損傷，確保其密封件15的使用壽命，降低後期維護頻率。另外，更為重要的是，隨著彈性件16彈性力的增大，其***V形凹槽151深度亦相應地增加，V形凹槽的151自身的擴張變形量亦逐漸增大，從而迅速地實現了對閥杆2的密封，這樣一來，具有較快的回應速度，確保高壓針閥具有較好的密封可靠性。
The technical solution disclosed in the present invention will be described below with an example. Figure 2 shows a schematic structural view of the first embodiment of the medium and high sealing high pressure needle valve of the present invention, which is mainly composed of the valve body 1, the
在此需要著重說明的是，上述彈性件16優選柱狀彈簧，當然亦可以根據實際情況選擇其他類型的彈性件。
It should be emphasized here that the above-mentioned
上述高壓密封性高壓針閥的動作原理如下：當閥杆2相對於閥體1位置確定後，即在閥杆孔111內依序置入承力套17、柱狀彈簧、密封件15，而後使用填料螺母4對密封件15進行壓靠。在上述安裝的操作過程中，需要留意柱狀彈簧的相對位置，確保其開口圈沉放於V形凹槽151內(如圖3中所示)。隨著填料螺母4的逐漸旋入，柱狀彈簧伸入V形凹槽151的深度加大，從而致使V形凹槽151同時向兩側進行擴張，進而實現了對閥杆2的密封。
The operating principle of the above-mentioned high-pressure sealing high-pressure needle valve is as follows: When the position of the
在高壓針閥的具體使用過程中，密封件15的V形凹槽151需
要經過多次擴張、收縮迴圈運動，因此，要求其自身具有較好的抗疲勞性。為此，上述密封件15優選由高耐疲勞性橡膠制得，確保閥杆2相對於閥體1具有穩定、可靠以及持久的密封性。
During the specific use of the high-pressure needle valve, the V-shaped
已知，在V形凹槽151發生形變的過程中，愈靠近其底部的位置愈易發生疲勞現象，且易出現裂紋，為此，可以在V形凹槽151的底部設置弧形過渡圓弧(圖中未示出)，以盡可能地優化該區域的受力狀況，盡可能地提高密封件的使用壽命。
It is known that during the deformation of the V-shaped
再者，出於更換閥芯3的便利性方面考慮，還可以將閥芯3相對於閥杆2的固定形式設置為可拆卸連接，具體實施方案如下：在閥杆2的末端開設有容納腔22，用來插設閥芯3。在閥芯3的外側壁上開設外螺紋，相應地，在容納腔22的入口側壁上開設有與上述外螺紋相適配的內螺紋。
Furthermore, in consideration of the convenience of replacing the
當然，亦可以在容納腔22的頂部、閥芯3的正上方設置有彈性橡膠球6(如圖2中所示)。彈性橡膠球6始終對閥芯3的頂壁施加一定的彈性頂靠力，這樣一來，當閥杆2相對于閥杆孔111的軸向中心線發生偏斜時，閥芯3可以自行進行偏置角度調整，盡可能地降低其相對于閥杆孔111側壁的磨損，確保閥芯3運動的順暢性以及對過渡腔14的可靠密封。
Of course, an elastic rubber ball 6 (as shown in Fig. 2) can also be provided on the top of the containing
圖4示出了本新型中高密封性高壓針閥第二種實施方式的結構示意圖，其相較於上述第一種實施方式的區別點在於：閥杆2的下端部設置為上大下小的錐形，相對應地，與之相適配過渡腔14的頂部亦設置為錐形，如此一來，一方面，有效地確保了閥杆2相對於過渡腔14的配合精度，確保介質進口12與介質出口13的有效隔絕；另一方面，當閥杆2相對於過渡腔14的側壁發生磨損時，錐形的配合方式可以即時進行自我補償，防止洩
露發生。
Figure 4 shows a schematic structural view of the second embodiment of the new medium and high tightness high-pressure needle valve. Compared with the above-mentioned first embodiment, the difference is that the lower end of the
當然，還可以在閥杆2的末端側壁上開設有用來對其進行容納的環形安裝槽，以配合安裝密封圈7(如圖4中所示)，從而進一步防止了閥杆2相對於過渡腔14洩露現象的發生。
Of course, an annular installation groove for accommodating the end side wall of the
作為上述高壓針閥結構的進一步細化，其手柄5由沿上下方向依序佈置的旋動部51以及連接部52構成(如圖6中所示)，其中，在連接部52的側壁上開設有螺紋孔，以借助於手柄固定螺釘8實現與閥杆2的固定，相應地，在閥杆2的對應位置設置有頂靠削平面23(如圖2中所示)。這樣一來，在確保手柄5和閥杆2連接可靠性的前提，盡可能低降低兩者拆分所需時間，降低後期維護難度。
As a further refinement of the above-mentioned high-pressure needle valve structure, the
再者，為了便於在實際使用過程中對手柄5進行旋動，還可以在旋動部51的側壁上設置有增摩擦凹槽511(如圖6中所示)，以防止操作人員在旋動過程中的手部出現打滑現象，提高操作的舒適性。具體為：上述增摩擦凹槽511的數量設置為多條，且沿著旋動部51的中心軸線進行周向均布。
Furthermore, in order to facilitate the rotation of the
對所公開的實施例的上述說明，使本領域專業技術人員能夠實現或使用本新型。對這些實施例的多種修改對本領域的專業技術人員來說將是顯而易見的，本文中所定義的一般原理可以在不脫離本新型的精神或範圍的情況下，在其它實施例中實現。因此，本新型將不會被限制于本文所示的這些實施例，而是要符合與本文所公開的原理和新穎特點相一致的最寬的範圍。 The above description of the disclosed embodiments enables those skilled in the art to realize or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined in this document can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but should conform to the widest scope consistent with the principles and novel features disclosed in this article.
1:閥體 1: Valve body
11:閥杆安裝凸起部 11: Valve stem installation protrusion
111:閥杆孔 111: Stem hole
12:介質進口 12: Medium inlet
13:介質出口 13: Medium outlet
14:過渡腔 14: Transition cavity
15:密封件 15: Seal
16:彈性件 16: elastic parts
17:承力套 17: bearing sleeve
2:閥杆 2: Valve stem
21:頂靠凸緣 21: against flange
22:容納腔 22: receiving cavity
23:頂靠削平面 23: Lean against the cut plane
3:閥芯 3: Spool
4:填料螺母 4: Packing nut
5:手柄 5: handle
6:彈性橡膠球 6: Elastic rubber ball
8:手柄固定螺釘 8: Handle fixing screw
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921081121.8U CN210510296U (en) | 2019-07-11 | 2019-07-11 | High-tightness high-pressure needle valve |
| CN201921081121.8 | 2019-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM603925U true TWM603925U (en) | 2020-11-11 |
Family
ID=70582328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW109208804U TWM603925U (en) | 2019-07-11 | 2020-07-10 | High-sealing and high-pressure needle valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN210510296U (en) |
| TW (1) | TWM603925U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219995A (en) * | 2019-07-11 | 2019-09-10 | 沅亨流体科技（昆山）有限公司 | A kind of high leakproofness high pressure needle valve |
-
2019
- 2019-07-11 CN CN201921081121.8U patent/CN210510296U/en active Active
-
2020
- 2020-07-10 TW TW109208804U patent/TWM603925U/en unknown
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| Publication number | Publication date |
|---|---|
| CN210510296U (en) | 2020-05-12 |
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