Corrosion-resistant precision steel casting

Abstract

The utility model discloses a corrosion-resistant precision steel casting which comprises a pipe body formed by pouring molten steel and a connecting ring, external threads are fixedly arranged at the two ends of the pipe body respectively, internal threads corresponding to the external threads are fixedly arranged on the inner circle faces of the two ends of the connecting ring respectively, and one end of the pipe body is in threaded connection with the internal threads at one end of the connecting ring through the external threads. According to the utility model, through the arrangement of the anti-loosening assemblies and the anti-corrosion layer, the clamping rod is clamped in the inner cavity of the annular clamping groove, so that the threaded connection is effectively prevented from loosening due to vibration and the like in the use process, and the anti-loosening effect is good. And the connection stability and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of cast steel parts technology, specifically a corrosion-resistant precision cast steel part. Background Technology

[0002] Corrosion-resistant precision cast steel parts are steel components made using casting processes. They possess precise dimensions and shape accuracy, as well as excellent resistance to corrosive environments.

[0003] Currently, Chinese patent CN219242893U discloses a high-precision corrosion-resistant stainless steel casting, relating to the field of stainless steel casting technology. It includes pipes, filter cylinders, and stainless steel pipe fittings. The stainless steel pipe fitting has two symmetrically arranged mounting rings fixedly connected to its surface. The inner wall of the mounting rings has threaded grooves, and the surface of the pipe has threaded protrusions that match the threaded grooves. This design allows a rubber sealing ring to be fitted onto the surface of the anti-corrosion layer, solving the problem of gaps between the anti-corrosion layer and the pipe joint caused by the connection between the stainless steel pipe fitting and the pipe, leading to corrosion and affecting the normal use of the anti-corrosion layer. Furthermore, it has the effect of filtering large particulate impurities at the connection between the stainless steel pipe fitting and the pipe, preventing the accumulation of large particulate impurities and causing blockage at the pipe connection, thus improving the corrosion resistance of this invention. The threaded connection between the mounting rings and the pipe also helps to improve the precision of the pipe connection.

[0004] The aforementioned high-precision, corrosion-resistant stainless steel castings still have some problems in use. Although the threaded connection between the mounting ring and the pipe helps improve the accuracy of the pipe connection, in actual use, the vibration generated by the equipment may cause the mounting ring and the pipe to loosen, which may lead to leakage at the connection. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant precision cast steel part to solve the problem mentioned in the background art, where vibrations generated by the equipment during actual use may cause loosening between the mounting ring and the pipe, potentially leading to leakage at the connection.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A corrosion-resistant precision cast steel part includes a tube body and a connecting ring formed by casting molten steel. External threads are fixedly provided at both ends of the tube body. Internal threads corresponding to the external threads are fixedly provided on the inner circular surfaces of both ends of the connecting ring. One end of the tube body is threaded to the internal thread at one end of the connecting ring through the external thread. Anti-loosening components are provided at the top of both ends of the connecting ring to prevent the internal threads and external threads from loosening. A corrosion-resistant layer is provided inside the tube body.

[0008] The anti-loosening component includes cylindrical shells respectively embedded in the top of both sides of the connecting ring. The interior of the two sets of cylindrical shells is provided with sliding grooves. The inner cavity of each sliding groove is slidably connected with a snap-fit ​​rod. The two ends of the two sets of snap-fit ​​rods respectively penetrate the corresponding side surface of the sliding groove and extend to the outside of the cylindrical shell. The two ends of the tube are respectively provided with annular snap-fit ​​grooves corresponding to one end of the snap-fit ​​rod. The inner cavity of the sliding groove is provided with an anti-disengagement component that pushes the snap-fit ​​rod downward to prevent the snap-fit ​​rod from disengaging from the inner cavity of the annular snap-fit ​​groove.

[0009] Preferably, the anti-detachment component includes a guide ring slidably connected to the inner cavity of the sliding groove. The guide ring is fixedly sleeved on the surface of the snap-fit ​​rod. A spring is sleeved on the surface of the snap-fit ​​rod located in the inner cavity of the sliding groove and above the guide ring. The two ends of the spring respectively contact the top of the guide ring and the top inner wall of the sliding groove. A fixing member is provided on the top of the cylindrical shell to further fix the snap-fit ​​rod.

[0010] Preferably, the fastener includes a nut that is slidably sleeved on the neck of the snap-fit ​​rod, the bottom of the nut being fixedly connected to the top surface of the cylindrical shell, the neck of the snap-fit ​​rod being provided with a threaded protrusion that matches the nut, and the top of the snap-fit ​​rod being fixedly connected to a turntable.

[0011] Preferably, a hexagonal collar is fixedly fitted onto the surface of the connecting ring.

[0012] Preferably, a connecting pipe is fixedly connected to the inner wall of the middle part of the connecting ring, and sealing rings are fixedly connected to the inner edges of both ends of the connecting pipe, with the inner edges of the pipe ends of the two sets of sealing rings facing each other being chamfered.

[0013] Preferably, the outer circular surfaces of the two sets of sealing rings are fitted with several sets of sealing rings.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of anti-loosening components and corrosion-resistant layer, allows the locking rod to be locked into the inner cavity of the annular groove, effectively preventing the threaded connection from loosening due to vibration and other reasons during use, thus improving the stability and reliability of the connection. Furthermore, the corrosion-resistant layer enhances the pipe body's resistance to various corrosive media, extends the service life of the pipe body, reduces maintenance costs, and is suitable for a variety of harsh working environments.

[0016] 2. By setting up an anti-loosening component, the guide ring in the anti-loosening component ensures that the locking rod slides stably up and down in the sliding groove without any deviation or jamming. At the same time, the spring continuously provides downward thrust to the locking rod, ensuring that the locking rod is always locked in the annular groove, further enhancing the anti-loosening effect.

[0017] 3. By setting up a fixing component, rotating the turntable causes the threaded protrusion on the neck of the snap-fit ​​rod to screw into the nut on the top of the cylindrical shell. At the same time, one end of the snap-fit ​​rod moves downward, so that one end of the snap-fit ​​rod is completely inserted into the interior of the annular snap-fit ​​groove. After the threaded protrusion and the nut are tightened, the snap-fit ​​rod is firmly fixed in the current position. Even if subjected to a large impact, it is difficult to move, thus providing additional fixation for the snap-fit ​​rod and preventing it from accidentally loosening or falling off. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the corrosion-resistant precision cast steel part of this utility model;

[0019] Figure 2 This is a cross-sectional view of the connecting ring and the tube body of this utility model;

[0020] Figure 3 This is a cross-sectional view of the cylindrical shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the threaded protrusion of this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting ring of this utility model.

[0023] In the diagram: 100, connecting ring; 101, hexagonal collar; 102, pipe body; 103, annular groove; 104, external thread; 105, internal thread; 106, corrosion-resistant layer; 200, cylindrical shell; 201, snap-fit ​​rod; 202, turntable; 203, nut; 204, sliding groove; 205, spring; 206, guide ring; 207, threaded protrusion; 300, connecting pipe; 301, sealing ring; 302, sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5This embodiment provides a corrosion-resistant precision cast steel part, including a tube body 102 formed by casting molten steel and a connecting ring 100. The two ends of the tube body 102 are respectively fixedly provided with external threads 104. The inner circular surfaces of both ends of the connecting ring 100 are fixedly provided with internal threads 105 corresponding to the external threads 104. One end of the tube body 102 is threaded to the internal thread 105 at one end of the connecting ring 100 through the external thread 104. The top of both ends of the connecting ring 100 are provided with anti-loosening components to prevent the internal threads 105 and the external threads 104 from loosening. The inside of the tube body 102 is provided with a corrosion-resistant layer 106.

[0026] The anti-loosening assembly includes cylindrical shells 200 respectively embedded in the top of both sides of the connecting ring 100. The interior of each cylindrical shell 200 has a sliding groove 204. Each sliding groove 204 has a locking rod 201 slidably connected to its inner cavity. The two ends of the locking rods 201 penetrate the corresponding side surface of the sliding groove 204 and extend to the outside of the cylindrical shell 200. Both ends of the tube body 102 are respectively provided with annular grooves 103 corresponding to one end of the locking rod 201. When the tube body 102 is threadedly connected to one end of the connecting ring 100, one end of the locking rod 201 engages with the corresponding annular groove 103. The inner cavity of the sliding groove 204 is equipped with an anti-disengagement component that pushes the snap-fit ​​rod 201 downward to prevent it from disengaging from the inner cavity of the annular snap-fit ​​groove 103. With the anti-loosening component and the corrosion-resistant layer 106, the snap-fit ​​rod 201 is snapped into the inner cavity of the annular snap-fit ​​groove 103, effectively preventing the threaded connection from loosening due to vibration or other reasons during use, thus improving the stability and reliability of the connection. Furthermore, the corrosion-resistant layer 106 enhances the resistance of the pipe body 102 to various corrosive media, extends the service life of the pipe body 102, reduces maintenance costs, and is suitable for various harsh working environments.

[0027] The corrosion-resistant layer 106 is formed by one or more of epoxy resin, fluorocarbon coating, and ceramic coating.

[0028] Furthermore, the anti-loosening component includes a guide ring 206 slidably connected to the inner cavity of the sliding groove 204. The guide ring 206 is fixedly sleeved on the surface of the snap-fit ​​rod 201. A spring 205 is sleeved on the surface of the snap-fit ​​rod 201 located in the inner cavity of the sliding groove 204 and above the guide ring 206. The two ends of the spring 205 respectively contact the top of the guide ring 206 and the top inner wall of the sliding groove 204. The top of the cylindrical shell 200 is provided with a fixing member to further fix the snap-fit ​​rod 201. Through the setting of the anti-loosening component, the guide ring 206 in the anti-loosening component ensures that the snap-fit ​​rod 201 slides stably up and down in the sliding groove 204 without deviation or jamming. At the same time, the spring 205 continuously provides a downward thrust to the snap-fit ​​rod 201, ensuring that the snap-fit ​​rod 201 is always snapped in the annular groove 103, further enhancing the anti-loosening effect.

[0029] Furthermore, the fastener includes a nut 203 that slides onto the neck of the snap-fit ​​rod 201. The bottom of the nut 203 is fixedly connected to the top surface of the cylindrical shell 200. The neck of the snap-fit ​​rod 201 is provided with a threaded protrusion 207 that matches the nut 203. The top of the snap-fit ​​rod 201 is fixedly connected to a turntable 202. By rotating the turntable 202, the threaded protrusion 207 on the neck of the snap-fit ​​rod 201 is screwed into the nut 203 on the top of the cylindrical shell 200. At the same time, one end of the snap-fit ​​rod 201 moves downward, so that one end of the snap-fit ​​rod 201 is completely engaged in the interior of the annular groove 103. After the threaded protrusion 207 and the nut 203 are tightened, the snap-fit ​​rod 201 is firmly fixed in the current position. Even if subjected to a large impact, it is difficult to move, thus providing additional fixation for the snap-fit ​​rod 201 and preventing it from accidentally loosening or falling off.

[0030] Preferably, a hexagonal collar 101 is fixedly sleeved on the surface of the connecting ring 100. The hexagonal collar 101 facilitates installation and disassembly using tools, thereby improving work efficiency.

[0031] It is worth noting that a connecting pipe 300 is fixedly connected to the inner wall of the middle part of the connecting ring 100. Sealing rings 301 are fixedly connected to the inner edges of both ends of the connecting pipe 300. When the pipe body 102 is threadedly connected to one end of the connecting ring 100, the sealing ring 301 can seal the connection between the pipe body 102 and the connecting ring 100. The inner edges of the pipe ends of the two sets of sealing rings 301 facing each other are chamfered. Through the setting of the connecting pipe 300 and the sealing ring 301, the connecting pipe 300 on the inner wall of the middle part of the connecting ring 100 plays the role of transition connection, making the connection between the two pipe bodies 102 smoother. At the same time, the sealing ring 301 can seal the connection between the pipe body 102 and the connecting ring 100 to prevent fluid leakage, ensure the sealing performance and safety of the system, and the chamfering of the inner edge of the pipe end of the sealing ring 301 reduces local resistance and improves the smoothness of the fluid in the pipe.

[0032] Furthermore, several sets of sealing rings 302 are fitted on the outer circular surface of the two sets of sealing rings 301. Through the setting of sealing rings 302, the sealing effect is further enhanced by multiple sets of sealing rings 302, which can effectively prevent leakage even under high pressure or harsh working environment.

[0033] Working principle;

[0034] When it is necessary to connect two tubes 102, the part with the external thread 104 at one end of one tube 102 is screwed into the internal thread 105 at one end of the connecting ring 100. After the tube 102 and the connecting ring 100 are connected in place, the snap-fit ​​rod 201 located in the top cylindrical shell 200 on both sides of the connecting ring 100 slides down under the push of the spring 205. One end of the snap-fit ​​rod 201 is snapped into the annular snap-fit ​​groove 103 at the end of the tube 102, thereby restricting the relative rotation between the tube 102 and the connecting ring 100 and preventing the threaded connection from loosening due to vibration or other external forces.

[0035] After the snap-fit ​​rod 201 is snapped into the annular groove 103, in order to further ensure the stability of the snap-fit ​​rod 201, the turntable 202 can be rotated to drive the threaded protrusion 207 on the neck of the snap-fit ​​rod 201 into the nut 203 on the top of the cylindrical shell 200. At the same time, one end of the snap-fit ​​rod 201 moves downward, so that one end of the snap-fit ​​rod 201 is completely snapped into the interior of the annular groove 103. After the threaded protrusion 207 and the nut 203 are tightened, the snap-fit ​​rod 201 is firmly fixed in the current position and is difficult to move even if subjected to a large impact.

[0036] When the pipe body 102 is connected to the connecting ring 100, the pipe wall of the pipe body 102 is tightly fitted with the sealing ring 302 on the surface of the corresponding sealing ring 301, thereby forming a sealing structure to prevent fluid leakage at the connection. In addition, the chamfering of the inner edge of the sealing ring 301 reduces local resistance and improves the smoothness of fluid flow in the pipe.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant precision cast steel part, characterized in that, The device includes a pipe body (102) formed by casting molten steel and a connecting ring (100). Both ends of the pipe body (102) are respectively fixedly provided with external threads (104). Both ends of the connecting ring (100) are fixedly provided with internal threads (105) corresponding to the external threads (104). One end of the pipe body (102) is threaded to the internal thread (105) at one end of the connecting ring (100) through the external thread (104). Both ends of the connecting ring (100) are provided with anti-loosening components to prevent the internal threads (105) and external threads (104) from loosening. The inside of the pipe body (102) is provided with a corrosion-resistant layer (106). The anti-loosening component includes cylindrical shells (200) respectively embedded in the top of both sides of the connecting ring (100). The two sets of cylindrical shells (200) are provided with sliding grooves (204). The inner cavity of each sliding groove (204) is slidably connected with a snap-fit ​​rod (201). The two ends of the two sets of snap-fit ​​rods (201) respectively penetrate the corresponding side surface of the sliding groove (204) and extend to the outside of the cylindrical shell (200). The two ends of the tube body (102) are respectively provided with annular snap-fit ​​grooves (103) corresponding to one end of the snap-fit ​​rod (201). The inner cavity of the sliding groove (204) is provided with an anti-disengagement component that pushes the snap-fit ​​rod (201) downward to prevent the snap-fit ​​rod (201) from disengaging from the inner cavity of the annular snap-fit ​​groove (103).

2. The corrosion-resistant precision cast steel part according to claim 1, characterized in that; The anti-detachment component includes a guide ring (206) slidably connected to the inner cavity of the sliding groove (204). The guide ring (206) is fixedly sleeved on the surface of the snap-fit ​​rod (201). A spring (205) is sleeved on the surface of the snap-fit ​​rod (201) located in the inner cavity of the sliding groove (204) and above the guide ring (206). The two ends of the spring (205) respectively contact the top of the guide ring (206) and the top inner wall of the sliding groove (204). The top of the cylindrical shell (200) is provided with a fixing member for further fixing the snap-fit ​​rod (201).

3. The corrosion-resistant precision cast steel part according to claim 2, characterized in that: The fastener includes a nut (203) that is slidably sleeved on the neck of the snap-fit ​​rod (201). The bottom of the nut (203) is fixedly connected to the top surface of the cylindrical shell (200). The neck of the snap-fit ​​rod (201) is provided with a threaded protrusion (207) that matches the nut (203). The top of the snap-fit ​​rod (201) is fixedly connected to a turntable (202).

4. A corrosion-resistant precision cast steel part according to claim 1, characterized in that: The surface of the connecting ring (100) is fixedly fitted with a hexagonal collar (101).

5. A corrosion-resistant precision cast steel part according to claim 1, characterized in that: A connecting pipe (300) is fixedly connected to the inner wall of the middle part of the connecting ring (100). A sealing ring (301) is fixedly connected to the inner edge of both ends of the connecting pipe (300). The inner edges of the pipe ends of the two sets of sealing rings (301) facing each other are chamfered.

6. A corrosion-resistant precision cast steel part according to claim 5, characterized in that: Several sets of sealing rings (302) are fitted on the outer circular surface of the two sets of sealing rings (301).

Images