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CN-224229285-U - Valve cone of needle valve

CN224229285UCN 224229285 UCN224229285 UCN 224229285UCN-224229285-U

Abstract

The utility model discloses a valve cone of a needle valve, which comprises a cone head and a cone rod, wherein the front end of the cone rod is provided with external threads, the cone head is provided with internal threads which are matched with the external threads of the cone rod, the cone head is provided with a limit rod, the lower end of the limit rod stretches into the cone rod, the cone head is provided with a first sealing layer at the top position of the limit rod, and a second sealing layer is arranged between the cone rod and the cone head. Compared with the prior art, in the utility model, the conical head and the conical rod are combined into a whole through threaded connection, and the conical rod is clamped through the limiting rod in the conical head, so that the conical rod is prevented from loosening and falling. Compared with the integrated structure, the processing cost and the material cost are reduced. Secondly, adopt first sealing layer and second sealing layer, can prevent water infiltration junction, can also improve the structural strength of valve cone.

Inventors

  • ZHU HAICHENG
  • WANG ZHENG
  • ZHANG XUAN
  • HU XINKE
  • LUO YAO

Assignees

  • 中阀科技(长沙)阀门有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (9)

  1. 1. The utility model provides a valve cone of needle valve, includes conical head and awl pole, its characterized in that, the front end of awl pole is equipped with the external screw thread, be equipped with the internal screw thread with the external screw thread looks adaptation of awl pole on the conical head, be equipped with the gag lever post on the conical head, the lower extreme of gag lever post stretches into in the awl pole, the conical head is equipped with first sealing layer in the top position department of gag lever post, be equipped with the second sealing layer between awl pole and the conical head.
  2. 2. The valve cone of the needle valve according to claim 1, wherein the limit rod is inserted into the cone head, and the lower end of the limit rod is clamped into the clamping groove of the cone rod.
  3. 3. The cone of claim 2, wherein the stop lever comprises a head portion and a stem portion, the head portion having a diameter greater than a diameter of the stem portion.
  4. 4. A valve cone of a needle valve according to claim 3, wherein the stem portion of the stop lever is an upper segment and a lower segment, the diameter of the stem portion of the lower segment is larger than the diameter of the stem portion of the upper segment, and the stem portion of the lower segment is snapped into the snap groove of the cone lever.
  5. 5. The valve cone of a needle valve of claim 4, wherein the cone head comprises a cone body and a cone tip, the cone rod is in threaded connection with the cone body, and the limit rod is located in the radial direction of the cone body.
  6. 6. The cone of claim 5, wherein the outer side of the second sealing layer is beveled.
  7. 7. The cone of a needle valve of claim 6, wherein the first sealing layer and the second sealing layer are each weld layers.
  8. 8. The valve cone of a needle valve of claim 7, wherein a weld groove is provided between the cone stem and the cone head, and the second sealing layer is secured within the weld groove.
  9. 9. The cone of a needle valve of claim 8, wherein the weld layer is stainless steel.

Description

Valve cone of needle valve Technical Field The utility model relates to the technical field of cone valve manufacturing, in particular to a valve cone of a needle valve. Background The cone of a needle valve is its core regulating member for precisely controlling the fluid flow. The valve cone comprises a cone head and a cone rod, and if an integrated forging process is adopted, the forming difficulty is high, the machining time is obviously increased, and the machining cost and the material cost are relatively high. Disclosure of utility model First, the technical problem to be solved Based on the above, the utility model provides a valve cone of a needle valve, which is used for solving the problems of difficult processing and high cost of the existing valve cone adopting an integrated structure. (II) technical scheme The utility model aims to overcome the problems or at least partially solve the problems, and provides a valve cone of a needle valve, which comprises a cone head and a cone rod, wherein the front end of the cone rod is provided with external threads, the cone head is provided with internal threads matched with the external threads of the cone rod, the cone head is provided with a limiting rod, the lower end of the limiting rod stretches into the cone rod, the cone head is provided with a first sealing layer at the top position of the limiting rod, and a second sealing layer is arranged between the cone rod and the cone head. Preferably, the limiting rod is inserted into the conical head, and the lower end of the limiting rod is clamped into the clamping groove of the conical rod. Preferably, the limit rod comprises a head and a rod, and the diameter of the head is larger than that of the rod. Preferably, the rod part of the limiting rod comprises an upper section and a lower section, the diameter of the rod part of the lower section is larger than that of the rod part of the upper section, and the rod part of the lower section is clamped into the clamping groove of the conical rod. Preferably, the conical head comprises a conical body and a conical tip, the conical rod is in threaded connection with the conical body, and the limiting rod is located in the radial direction of the conical body. Preferably, the outer side of the second sealing layer is an inclined plane. Preferably, the first sealing layer and the second sealing layer are both welding layers. Preferably, a welding groove is formed between the conical rod and the conical head, and the second sealing layer is fixed in the welding groove. Preferably, the welding layer is made of stainless steel. (III) beneficial effects The valve cone of the needle valve has the following advantages: according to the utility model, the conical head and the conical rod are combined into a whole through threaded connection, and the conical rod is clamped through the limiting rod in the conical head, so that the conical rod is prevented from loosening and falling off. Compared with the integrated structure, the processing cost and the material cost are reduced. Secondly, adopt first sealing layer and second sealing layer, can prevent water infiltration junction, can also improve the structural strength of valve cone. Drawings The features and advantages of the present utility model will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the utility model in any way, in which: FIG. 1 is a schematic diagram of the structure of the present utility model; FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1; FIG. 3 is a diagram of the present utility model. Reference numerals illustrate: 1. The conical head, the conical rod, the limit rod, the first sealing layer, the second sealing layer, the conical body, the conical tip, the clamping groove and the inclined surface are respectively arranged on the conical head, the conical rod, the limit rod, the first sealing layer, the second sealing layer, the conical body, the conical tip and the inclined surface. Detailed Description In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below. Referring to fig. 1, this embodiment provides a valve cone of needle valve, including conical head 1 and conical rod 2, the front end of conical rod 2 is equipped with the external screw thread, be equipped with on conical head 1 with conical rod 2's external screw t