Adapter with special threads
By designing a conversion connector with a special thread, the problem of unreliable connection after repeated disassembly and assembly of stainless steel and PVC pipe fittings was solved, achieving a stable connection and reducing maintenance costs.
Patent Information
- Application Number
- CN202423257553.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The threaded connection between stainless steel pipe fittings and PVC pipe fittings is prone to losing reasonable tolerance after repeated disassembly and assembly, resulting in an unreliable connection, water leakage, and frequent replacement of PVC pipe fittings, which increases maintenance costs.
Design a conversion connector with a threaded tube on one side and a threaded post on the other side with a triangular thread. The special thread teeth are triangular in shape with rounded corners at the top and spiral grooves at the bottom. The conversion connector is made of rigid PVC material.
The special thread design reduces the possibility of secondary processing of the threads, ensures a stable connection, avoids secondary loosening of the pipe fittings, and only requires the replacement of the adapter to solve the connection problem, thus reducing maintenance costs.
Smart Images
Figure CN223767875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thread technology, and in particular to a conversion connector with a special thread. Background Technology
[0002] In pure water equipment, stainless steel pipe fittings are often used to connect PVC pipe fittings. Although the thread specifications of the two types of pipe fittings are the same, because the material of PVC pipe fittings is softer, a one-time thread connection can achieve a stable connection. However, after repeated disassembly and assembly, the thread teeth of the stainless steel thread, like a tap, process the thread of the PVC pipe fitting. This causes the two types of threads to no longer maintain reasonable tolerances when reconnecting, resulting in connection failure. This often leads to water leakage, frequent replacement of PVC pipe fittings, and high maintenance costs. Utility Model Content
[0003] To address the problem of unreliable connections between stainless steel pipe fittings and PVC pipe fittings using threaded connections, this invention provides a conversion connector with a special thread.
[0004] The technical solution provided by this utility model is: it includes a conversion connector, one side of which is a threaded tube with special thread teeth and the other side is a threaded post with triangular thread.
[0005] The special thread teeth are triangular threads, with spiral grooves in the grooves of adjacent special thread teeth, and the tips of the special thread teeth are machined into rounded corners.
[0006] The depth of the spiral groove is such that the virtual sharp corner of the triangular special thread tooth bottom cannot contact the bottom of the spiral groove.
[0007] The adapter is made of rigid PVC.
[0008] The beneficial effects of this utility model are as follows: the threaded hole containing the special thread teeth connects to stainless steel pipe fittings, and the threaded post connects to PVC pipe fittings. Because the bottom of the special thread teeth has a spiral groove, the tip of the stainless steel thread teeth does not contact the bottom of the special thread teeth. The tip of the special thread teeth is machined into a rounded corner. The two types of threads only meet at two sides, thereby reducing the possibility of the special thread teeth being processed again. The other side of the conversion joint is made of PVC material, which can be connected normally without the problem of secondary processing. This solves the problem of connecting stainless steel and PVC pipe fittings, reduces maintenance costs, and even if the conversion joint is loosened by secondary processing, the conversion joint can be replaced separately without maintaining the pipeline body. Attached Figure Description
[0009] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Appendix Figure 2 It is attached Figure 1 Enlarged view of point A.
[0011] In the diagram, 1-special thread tooth, 2-helical groove, 3-rounded corner, 4-virtual sharp corner, 5-threaded pipe, 6-threaded column, 7-triangular thread, 8-adapter. Detailed Implementation
[0012] like Figures 1-2 As shown, a conversion adapter with a special thread includes a conversion adapter 8, one side of which is a threaded tube 5 with special thread teeth 1 and the other side is a threaded post 6 with triangular thread 7.
[0013] The tooth profile of the special thread tooth 1 is a triangular thread, and a spiral groove 2 is opened in the tooth groove of the adjacent special thread tooth 1. The tooth tip of the special thread tooth 1 is machined into a rounded corner 3.
[0014] The depth of the spiral groove 2 is such that the virtual sharp corner 4 of the bottom of the special thread tooth 1 of the triangle cannot contact the bottom of the spiral groove 2.
[0015] The adapter 8 is made of rigid PVC material.
[0016] In use, the threaded pipe 5 containing the special thread tooth 1 is connected to the stainless steel pipe fitting, and the threaded post 6 containing the triangular thread 7 is connected to the PVC pipe fitting. Because the bottom of the special thread tooth 1 has a spiral groove 2, the tip of the stainless steel thread tooth does not contact the bottom of the special thread tooth 1. The tip of the special thread tooth 1 is machined into a rounded corner 3. The two threads only meet at the two sides, thus reducing the possibility of the special thread tooth 1 being processed again. The other side of the conversion joint 8 is made of PVC material and can be connected normally without the problem of secondary processing. This solves the problem of connecting stainless steel and PVC pipe fittings, reduces maintenance costs, and even if the conversion joint 8 is loosened by secondary processing, the conversion joint 8 can be replaced alone without maintaining the pipeline body.
Claims
1. A swivel with special threading comprising a swivel (8), characterized in that: The conversion joint (8) is a threaded pipe (5) with special thread teeth (1) on one side and a threaded column (6) with triangular thread (7) on the other side; The tooth shape of the special thread teeth (1) is triangular thread, and a spiral groove (2) is formed at the tooth groove part of adjacent special thread teeth (1), and the tooth top of the special thread teeth (1) is processed into a round corner (3); The depth of the spiral groove (2) is that the virtual sharp corner (4) of the triangular special thread teeth (1) cannot contact the groove bottom of the spiral groove (2); The conversion joint (8) is made of hard PVC material.