TWM484653U - A needle valve - Google Patents

Description

Needle valve

[1] This creation relates to a needle valve, in particular to an innovative structural type of needle valve with good sealing effect, long service life and low maintenance cost.

[2] Press, in the technical field of machinery, the use of a pressure cylinder to support the object is a fairly common technical means, which is a hydraulic cylinder. The reason why oil is usually used as the driving medium is because the oil has the characteristics of being incompressible, lubricating, reducing friction and preventing rust. Of course, if it is based on cost considerations, pneumatic cylinders are also a good choice. When the fluid is pressurized directly into the cylinder, the pressure provided cannot be adjusted. Of course, the rate at which the cylinder piston is actuated and the load that can be provided cannot be adjusted. Therefore, the relevant industry has developed the "improved structure of the needle valve" disclosed in the Patent Publication No. 406768, which is used to adjust the flow rate of the fluid into the pressure cylinder and to control the pressure cylinder. [3] The conventional needle valve structure mainly utilizes a regulating valve seat which is screwed in the valve body, and uses the relative distance from the valve seat to achieve the purpose of opening/closing the flow path and adjusting the flow rate of the fluid per unit time. However, such conventional structural types have found in the actual use experience that the following problems still exist: when the flow path is to be closed, the conventional needle valve is directly sealed by the tapered portion formed by adjusting the end portion of the valve seat. Avoiding the valve seat in the valve body, since both the valve body and the regulating valve seat are metal members, if the operator applies excessive force, it is easy to cause annular wear of the taper, even if the operator does not operate improperly, The metal member is tightly reciprocated for a long period of time, and it is also likely to cause metal abrasion, resulting in a phenomenon in which the flow path cannot be completely closed. Moreover, the regulating valve seat of the conventional needle valve is an integrally formed member, so when the above-mentioned situation in which the flow path cannot be completely closed is generated, it is necessary to replace the entire one, which requires unnecessary maintenance cost. [4] Therefore, in view of the problems existing in the above-mentioned conventional structure, how to develop an innovative structure that is more ideal and practical, and the users are looking forward to it, and the relevant industry must strive to develop the goal and direction of breakthrough. [5] In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the author has finally achieved a practical and practical creation.

[6] The main purpose of this creation is to provide a needle valve. The technical problem to be solved is to make an innovative breakthrough in how to develop a new type of needle valve structure that is more ideal and practical. [7] The technical feature of the present problem solving method is mainly that the needle valve comprises a valve body, a seat body mounted on the valve body in a fluid state in a closed valve body, and a fluid actuating body in the closed valve body. Through the seat body, and acting axially reciprocatingly with respect to the seat body, the actuating rod of the flow channel function in the valve body is opened and closed; the valve body is respectively formed with an inlet pipe and an outlet pipe communicating with the outside a circular groove is formed on the valve body, and the bottom surface of the groove is concentrically extended with a first flow path communicating with the outlet pipe. The diameter of the first flow path is smaller than the diameter of the groove, and the groove is The bottom surface forms an abutting surface; the valve body is formed with a second flow passage connecting the inlet pipe and the groove; one end of the actuating rod extends through the seat body to extend outside the valve body, and the other end thereof The end face is concentrically extended with a thimble extending through the first flow path, and the fixed end of the thimble is sleeved with a gasket; the gasket is selectively attached to the abutting surface to block the inlet and outlet lines For the purpose, and when the gasket is attached to the abutment surface, The free end of the thimble exactly against the top wall of the outlet line, so as to avoid damage due to handling when the gasket too. [8] With this innovative and unique design, this creation can achieve the effect of prolonging the service life and reducing the maintenance cost compared with the prior art, and achieving practical progress and better industrial economic benefits.

[10] Please refer to Figures 1, 2 and 3 for a preferred embodiment of the present invention. However, these embodiments are for illustrative purposes only and are not limited by this structure. The needle valve mainly includes a valve body 10, a seat body 20 mounted on the valve body 10 in a fluid state in a sealed valve body, and a working fluid flowing through the seat body 20 in a closed valve body, and The actuating lever 30 that opens and closes the flow path function in the valve body 10 is reciprocally moved relative to the seat body 20. [11] The valve body 10 is respectively formed with an inlet pipe 11 communicating with the outside and an outlet pipe 12, and the valve body 10 is formed with a circular groove 13 and the bottom surface of the groove 13 is concentrically extended. The first flow channel 14 is connected to the outlet pipe 12, the diameter of the first flow channel 14 is smaller than the diameter of the groove 13, and an abutment surface 131 is formed on the bottom surface of the groove 13; A second flow path 15 is formed which communicates with the inlet line 11 and the groove 13. [12] The seat body 20 is provided with a through hole 21 concentrically corresponding to the first flow path 14. The inner wall of the through hole 21 is divided into an internal thread segment 211 and a smooth segment 212 according to its structure and function. [13] The actuating lever 30 itself is sequentially arranged as a control section 31 extending from the through hole 21, a threaded section 32 interlocked with the internal thread section 211, and an oil seal section 33 corresponding to the smooth section 212. For the convenience of the user, the end of the control section 31 is provided with a knob 34; the oil seal section 33 is horizontally formed with at least one annular groove 331, and the annular groove 331 is sleeved with an O-shaped portion. The ring 332 is attached to the smooth section 212 by the O-ring 332 to achieve the function of sealing. The end face of the oil seal section 33 is concentrically extended with a thimble 35 extending through the first flow path 14, and a fixed end of the thimble 35 is sleeved with a gasket 36. [14] Please refer to the second and fourth figures. With the above structure design, the following is the use of this creation: [15] When the creation is closed, it is mainly used for fitting. The gasket 36 on the abutment surface 131 blocks the first flow passage 14 and prevents the inlet conduit 11 and the outlet conduit 12 from communicating with each other. When the gasket 36 is attached to the abutting surface 131, the free end of the ejector pin 35 abuts against the wall surface of the outlet pipe 12, so as to prevent the user from continuing to apply force after the flow channel is closed, thereby damaging the gasket 36. . In order to ensure a better closed barrier actuating fluid effect, the gasket 36 is usually made of rubber or a material having the same material characteristics, although the thimble 35 described above can provide the function of the protective gasket 36, and the gasket 36 is still There may be a qualitative change due to long-term use, thus affecting the sealing effect. At this time, as long as the actuating lever 30 is removed to replace the spacer 36, it is not necessary to replace the entire adjusting valve seat as in the conventional needle valve (equivalent to the actuating lever 30 of the present invention). ), can reduce the cost of maintenance. When the flow path in the valve body 10 is to be opened, the movement lever 30 is rotated by the knob 34, and the internal thread section 211 and the external thread section 32 are engaged with each other, so that the movement rod 30 is axially moved relative to the base 20. And extending toward the outside of the valve body 10, so that the end of the thimble 35 and the gasket 36 respectively leave the inner wall and the abutting surface 131 of the outlet pipe 12, so that the high-pressure fluid can be sequentially passed through the inlet pipe 11, the first The second flow path 15, the groove 13, the first flow path 14 and the outlet line 12 move into the pressure cylinder via the valve body 10. When the flow path in the valve body 10 is to be closed again, as long as the knob 34 is operated in the reverse direction, the end portion of the ejector pin 35 and the spacer 36 can again abut against the inner wall and the abutting surface 131 of the outlet pipe 12, respectively. [16] As shown in Fig. 5, the person seen in the figure is another embodiment of the authoring valve body 10. In this embodiment, the bottom surface of the groove 13 is convexly provided with an annular rib 132 surrounding the end of the first flow path 14. When the first flow path 14 is to be closed, the gasket 36 is attached to the ring. On the rib 132. Since the pressure is inversely proportional to the contact area, the present embodiment mainly improves the locking effect of the gasket 36 by reducing the contact area between the gasket 36 and the valve body 10. Of course, when the gasket 36 abuts against the annular rib 132 to close the first flow passage 14, the free end of the thimble 35 also abuts against the wall surface of the outlet pipe 12, thereby preventing the user from improperly closing the flow passage. Continue to apply force to damage the gasket 36. [17] As shown in FIG. 6, another embodiment of the present invention is mainly to mount the two sets of the combined body 20 and the actuating rod 30 on a valve body 10, wherein the high pressure can be approached. The body 20 of the fluid source (not shown) and the actuating rod 30 are used as switches, while the other group is used as a needle valve for regulating functions. Of course, the two groups can be simultaneously adjusted to provide more precise and more Fine control effect. [18] Efficacy description: The "needle valve" disclosed in this creation mainly runs through the valve body, the seat body mounted on the valve body in the fluid state of the closed valve body, and the fluid flow in the closed valve body. The seat body is reciprocatingly moved relative to the seat body to reach the flow function of the flow passage function in the valve body to open and close the flow passage in the valve body; the main purpose is to use a gasket specially designed on the actuating rod Achieve the purpose of closing the flow channel. When the gasket closes the flow passage, the end portion of the actuating rod will abut against the internal structure of the valve body, thereby avoiding the force applied when the user closes the flow passage, and the gasket is damaged, thereby prolonging the use of the needle valve. Lifetime; in addition, when the effect of obscuring the flow path is reduced, it is only necessary to replace the quality change gasket, and it is not necessary to replace the entire actuator rod, which can greatly reduce the maintenance cost of the needle valve. With the unique structural form and technical characteristics of this creation, this creation is indeed a novel and practical advancement in comparison with the conventional structure proposed in [Prior Art]. [19] The above embodiments are disclosed to illustrate the creation of the present invention, and although the description is made by specific terms, the scope of patents of the novel creation cannot be limited thereby; those skilled in the art can The understanding of the spirit and principles of this creation is subject to change and modification to achieve an equivalent purpose, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.

[20]
10‧‧‧ Valve body 11‧‧‧Inlet line 12‧‧‧Export line 13‧‧‧ Groove 131‧‧‧ Abutment 132‧‧‧Ring rib 14‧‧‧First runner 15‧ ‧‧Second runner 20‧‧‧Section 21‧‧‧Perforated 211‧‧‧Threaded section 212‧‧Smooth section 30‧‧‧Acoustic rod 31‧‧‧Control section 32‧‧ External thread section 33 ‧‧‧Oil seal section 331‧‧‧ ring groove 332‧‧‧O-ring 34‧‧‧ knob 35‧‧‧ thimble 36‧‧‧ gasket

[9] Figure 1 is a reference diagram of the usage status of this creation. Figure 2 is a cross-sectional view of the creation. Figure 3 is a cross-sectional view of the decomposition of this creation. Figure 4 is a schematic diagram of the action of this creation. Figure 5 is a cross-sectional view of another embodiment of the present creation. Figure 6 is a schematic diagram of the different use states of the present creation.

10‧‧‧ valve body

11‧‧‧Inlet pipe

12‧‧‧Export line

13‧‧‧ Groove

131‧‧‧Abutment

14‧‧‧First runner

15‧‧‧Second runner

20‧‧‧ body

30‧‧‧Action rod

31‧‧‧Control section

32‧‧‧External thread section

33‧‧‧ oil seal

331‧‧‧ Ring groove

332‧‧‧O-ring

34‧‧‧ knob

35‧‧‧ thimble

36‧‧‧shims

Claims (8)

A needle valve mainly comprises a valve body, a seat body mounted on the valve body in a fluid state in a closed valve body, and a working fluid flowing through the seat body in a sealed valve body, and is opposite to the seat body The body acts as an axial reciprocating movement to actuate the flow channel function in the valve body; wherein: the valve body is formed with an inlet pipe communicating with the outside and an outlet pipe, wherein the valve body is formed with a circle Forming a groove, and the bottom surface of the groove is concentrically extended with a first flow path communicating with the outlet pipe, the diameter of the first flow channel is smaller than the diameter of the groove, and an abutment surface is formed on the bottom surface of the groove The valve body is formed with a second flow passage connecting the inlet pipe and the groove; and one end of the actuating rod extends through the seat body to extend outside the valve body, and the end surface of the other end is concentrically extended and penetrates a thimble of the first flow path, the fixed end of the thimble is sleeved with a gasket; the gasket is selectively attached to the abutting surface for the purpose of blocking the inlet and outlet pipes, and when the gasket When the first flow path is closed, the free end of the thimble is just Resist the wall of the outlet pipe to avoid damage to the gasket due to improper handling. The needle valve of claim 1, wherein the seat body is provided with a perforation corresponding to the first flow path, and the inner wall of the perforation is provided with an internal thread segment; the actuating rod is provided with a lock The external thread segment has a threaded section, so that when the lever is rotated, the actuating lever can be reciprocally axially moved relative to the seat. The needle valve according to claim 1 or 2, wherein the perforation is provided with a smooth section; the actuating rod is sequentially arranged to extend the control section of the perforation, the external thread segment is engaged with the external thread segment and corresponds to The oil seal section of the smooth section; the oil seal section is formed with at least one ring groove horizontally, and an O-ring is sleeved in the ring groove, and the O-ring is attached to the smooth section to achieve the sealing combined effect. The needle valve of claim 3, wherein the end of the control section is provided with a knob for facilitating the user to rotate the movement rod. A needle valve mainly comprises a valve body, a seat body mounted on the valve body in a fluid state in a closed valve body, and a working fluid flowing through the seat body in a sealed valve body, and is opposite to the seat body The body acts as an axial reciprocating movement to actuate the flow channel function in the valve body; wherein: the valve body is formed with an inlet pipe communicating with the outside and an outlet pipe, wherein the valve body is formed with a circle a concave groove, and a bottom surface of the groove is concentrically extended with a first flow path communicating with the outlet pipe, the diameter of the first flow channel is smaller than the diameter of the groove, and the bottom surface of the groove is convexly provided with a surrounding An annular rib at the end of the first-stage passage 14; the valve body is formed with a second flow passage communicating with the inlet pipe and the groove; and one end of the actuating rod extends through the seat body to extend outside the valve body, and The end of the other end is concentrically extended with a thimble extending through the first flow path, and the fixed end of the thimble is sleeved with a gasket; the gasket is selectively attached to the annular rib to reach the interruption inlet line With the purpose of the outlet pipe, and when the gasket closes the first flow In the case of the road, the free end of the thimble is exactly against the wall surface of the outlet pipe to avoid damage to the gasket due to improper handling. The needle valve of claim 5, wherein the seat body is provided with a perforation corresponding to the first flow path, and the inner wall of the perforation is provided with an internal thread segment; the actuating rod is provided with a lock The external thread segment has a threaded section, so that when the lever is rotated, the actuating lever can be reciprocally axially moved relative to the seat. The needle valve according to claim 5 or 6, wherein the perforation is provided with a smooth section; the actuating rod is sequentially arranged to extend the control section of the perforation, the external thread segment is engaged with the external thread segment and corresponds to The oil seal section of the smooth section; the oil seal section is formed with at least one ring groove horizontally, and an O-ring is sleeved in the ring groove, and the O-ring is attached to the smooth section to achieve the sealing combined effect. The needle valve of claim 7, wherein the end of the control section is provided with a knob for facilitating the user to rotate the movement rod.