Reducer pipe fitting with stainless steel lining

Abstract

The utility model provides a stainless steel lined pipe fitting with large and small heads, which relates to the technical field of pipe fittings and comprises a connecting pipe, a small-head pipe fitting body and a large-head pipe fitting are respectively arranged at two ends of the connecting pipe, connecting rings are fixedly mounted on the outer walls of the small-head pipe fitting body and the large-head pipe fitting, and two clamping grooves are symmetrically formed in the outer walls of the connecting rings. During connection, a worker sleeves the outer wall of the connecting pipe with the connecting ring, moves the clamping groove to the position below the clamping block and then rotates the grip, the grip drives the first threaded rod to rotate, so that the first threaded rod descends along the first threaded hole and further drives the clamping block to enter the clamping groove, and at the moment, the connecting ring is fixed; then a worker rotates a handle, the handle drives a second threaded rod to rotate, the second threaded rod moves along a second threaded hole, a connecting block enters a connecting groove, a limiting rod is fixed at the moment, a clamping block can be prevented from leaving a clamping groove, and the connecting stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fittings, in particular to a stainless steel lined reducing pipe fitting. Background Art

[0002] Pipe fittings are a general term for components in a pipeline system that play roles such as connection, control, direction change, flow division, sealing, and support. Among them, reducing pipe fittings are pipe fittings that connect pipes with different diameters. Existing reducing pipe fittings include a pipe fitting body, a flow channel is opened in the pipe fitting body, the flow channel runs through the pipe fitting body and is provided with a large port for connecting to a pipe with a larger diameter and a small port for connecting to a pipe with a smaller diameter, so as to connect pipes with different diameters to the corresponding ports to achieve the connection of the pipeline.

[0003] In the prior art, such as a reducing pipe fitting with replaceable dimensions in Chinese Patent CN 215806999 U, it includes a horizontal pipe, a large head pipe fitting is movably sleeved on the left side of the surface of the horizontal pipe, the right side of the inner wall of the horizontal pipe is movably connected with a small head pipe fitting, the right end of the small head pipe fitting penetrates to the right side of the horizontal pipe, a first annular groove is opened on the right side of the surface of the large head pipe fitting, and first L-shaped plates are fixedly connected to the left sides of the top and bottom of the horizontal pipe, and a first threaded rod is penetrated through one side of the first L-shaped plate. The utility model has the advantage of replaceable dimensions, and solves the problem that the reducing pipe fitting is integrally formed, and the corresponding calibers of the large port and the small port are constant, so that a reducing pipe fitting can only be adapted to a single installation situation. If the diameter of any connected pipe changes, a suitable reducing pipe fitting needs to be replaced again, resulting in strong correspondence of the reducing pipe fitting, thus leading to a small application range and cumbersome part replacement. However, the patent still has the following problems.

[0004] In the above patent, although the patent realizes that the large head pipe fitting and the small head pipe fitting with different dimensions can be replaced, when the device is in use, if there is an accidental touch of the turntable by an external force, the clamping plate may move, which may affect the connection stability. And because the threaded rod is exposed to the outside, if there is more moisture or dust in the environment, the threaded rod may be corroded or worn, thereby reducing the connection stability. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem that in the prior art, when the threaded rod is touched by an external force or corroded or worn, the connection stability may be reduced, and a stainless steel lined reducing pipe fitting is proposed.

[0006] To achieve the above object, the utility model adopts the following technical solutions: a stainless steel reducer pipe fitting with a lining, including a connecting pipe. At both ends of the connecting pipe, a small-end pipe fitting body and a large-end pipe fitting are respectively arranged. Connecting rings are fixedly installed on the outer walls of the small-end pipe fitting body and the large-end pipe fitting. Two card slots are symmetrically opened on the outer wall of the connecting ring. Two groups of L-shaped plates are symmetrically installed on the outer wall of the connecting pipe. A first threaded hole and an opening are penetrated through the top of the L-shaped plate. A first threaded rod is threadedly connected inside the first threaded hole. The bottom of the first threaded rod is movably connected with a clamping block. A handle is fixedly installed at the top of the first threaded rod. A limiting rod is fixedly installed at the top of the clamping block. The limiting rod is slidably connected with the opening. A connecting groove is opened on the outer wall of the limiting rod. A fixing groove is opened on the inner wall of the opening. A storage groove is opened on the top of the L-shaped plate. A second threaded hole is penetrated between the storage groove and the fixing groove. A second threaded rod is threadedly connected inside the second threaded hole. A connecting block is fixedly installed at one end of the second threaded rod. A handle is fixedly installed on the outer wall of the second threaded rod.

[0007] Preferably, a limiting groove is opened on the inner wall of the storage groove. A spring is fixedly installed on the inner wall of the limiting groove. A baffle is fixedly installed at one end of the spring. A pulling plate is fixedly installed at the top of the baffle.

[0008] Preferably, a protective groove is opened on the inner wall of the storage groove. A sealing plate is fixedly installed on the inner wall of the protective groove.

[0009] Preferably, two guiding grooves are opened on the opposite sides of the two connecting rings. Two groups of guide rails are symmetrically installed on the outer wall of the connecting pipe.

[0010] Preferably, sealing grooves are opened at both ends of the connecting pipe. Sealing rings are fixedly installed on the inner walls of the sealing grooves. Insertion rings are fixedly installed on the opposite sides of the small-end pipe fitting body and the large-end pipe fitting.

[0011] Preferably, stainless steel pipes are fixedly installed on the inner walls of the connecting pipe, the small-end pipe fitting body, and the large-end pipe fitting.

[0012] Preferably, the outer wall of the clamping block fits with the inner wall of the card slot.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are as follows.

[0014] 1. In the present utility model, during connection, the operator slips the connection ring over the outer wall of the connecting pipe, moves the card slot below the card block, and then rotates the grip. The grip drives the first threaded rod to rotate, causing the first threaded rod to descend along the first threaded hole, thereby driving the card block into the card slot. At this time, the connection ring is fixed. Then, the operator rotates the handle, which drives the second threaded rod to rotate, causing the second threaded rod to move along the second threaded hole, enabling the connection block to enter the connection slot. At this time, the limiting rod is fixed, thus preventing the card block from leaving the card slot and further enhancing the connection stability.

[0015] 2. In the present utility model, during connection, the operator pulls the pull plate, which drives the baffle to move, compressing the spring. The baffle enters the limiting slot. When the connection is completed, the operator releases the pull plate, and the elastic force of the spring pushes the baffle to move. One end of the baffle enters the protective slot and contacts the sealing plate. At this time, the baffle blocks the storage slot, thus preventing moisture and dust from entering the storage slot and affecting the normal operation of the handle, and preventing moisture from entering the second threaded hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall three-dimensional view of the reducing pipe fitting with an inner lining of stainless steel proposed by the present utility model;

[0017] Figure 2 is the cross-sectional view of the connecting pipe of the reducing pipe fitting with an inner lining of stainless steel proposed by the present utility model;

[0018] Figure 3 is the three-dimensional view of the L-shaped plate of the reducing pipe fitting with an inner lining of stainless steel proposed by the present utility model;

[0019] Figure 4 is the cross-sectional view of the L-shaped plate of the reducing pipe fitting with an inner lining of stainless steel proposed by the present utility model.

[0020] Legend: 1. Connecting pipe; 2. Small head pipe fitting body; 3. Large head pipe fitting; 4. Connection ring; 5. L-shaped plate; 6. Guide rail; 7. Guide groove; 8. Sealing groove; 9. Sealing ring; 10. Insert ring; 11. Stainless steel pipe; 12. Card slot; 13. First threaded hole; 14. First threaded rod; 15. Card block; 16. Grip; 17. Limiting rod; 18. Opening; 19. Connection slot; 20. Fixed slot; 21. Second threaded hole; 22. Storage slot; 23. Second threaded rod; 24. Connection block; 25. Handle; 26. Limiting slot; 27. Spring; 28. Baffle; 29. Pull plate; 30. Protective slot; 31. Sealing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited to the limitations of the specific embodiments disclosed in the following specification.

[0023] Embodiment 1, as Figures 1 - 4 shown, the present utility model provides a reducing pipe fitting with a stainless steel lining, including a connecting pipe 1. Small head pipe fitting bodies 2 and large head pipe fittings 3 are respectively arranged at both ends of the connecting pipe 1. Connecting rings 4 are fixedly installed on the outer walls of the small head pipe fitting body 2 and the large head pipe fitting 3. Two card slots 12 are symmetrically opened on the outer wall of the connecting ring 4. Two groups of L-shaped plates 5 are symmetrically installed on the outer wall of the connecting pipe 1. First threaded holes 13 and openings 18 are penetrated through the top of the L-shaped plate 5. A first threaded rod 14 is threadedly connected inside the first threaded hole 13. A clamping block 15 is movably connected to the bottom of the first threaded rod 14. A handle 16 is fixedly installed at the top of the first threaded rod 14. A limiting rod 17 is fixedly installed at the top of the clamping block 15. The limiting rod 17 is slidably connected with the opening 18. A connecting groove 19 is opened on the outer wall of the limiting rod 17. A fixing groove 20 is opened on the inner wall of the opening 18. A storage groove 22 is opened at the top of the L-shaped plate 5. A second threaded hole 21 is penetrated between the storage groove 22 and the fixing groove 20. A second threaded rod 23 is threadedly connected inside the second threaded hole 21. A connecting block 24 is fixedly installed at one end of the second threaded rod 23. A handle 25 is fixedly installed on the outer wall of the second threaded rod 23.

[0024] The overall effect achieved by the entire Embodiment 1 is that during connection, the staff sleeved the connecting ring 4 on the outer wall of the connecting pipe 1, moved the card slot 12 below the clamping block 15, and then the staff rotated the handle 16. The handle 16 drove the first threaded rod 14 to rotate, so that the first threaded rod 14 descended along the first threaded hole 13, thereby driving the clamping block 15 into the card slot 12. At this time, the connecting ring 4 was fixed. Then the staff rotated the handle 25. The handle 25 drove the second threaded rod 23 to rotate, so that the second threaded rod 23 moved along the second threaded hole 21, and the connecting block 24 entered the connecting groove 19. At this time, the limiting rod 17 was fixed, thus preventing the clamping block 15 from leaving the card slot 12 and further improving the connection stability.

[0025] Embodiment 2, as Figures 1 - 4 shown, further, a limiting groove 26 is opened on the inner wall of the storage groove 22. A spring 27 is fixedly installed on the inner wall of the limiting groove 26. A baffle 28 is fixedly installed at one end of the spring 27. A pulling plate 29 is fixedly installed at the top of the baffle 28.

[0026] Further, a protective groove 30 is formed in the inner wall of the storage groove 22, and a sealing plate 31 is fixedly installed on the inner wall of the protective groove 30 to enhance the sealing performance.

[0027] Further, two guide grooves 7 are formed on the opposite sides of the two connecting rings 4, and two groups of guide rails 6 are symmetrically installed on the outer wall of the connecting pipe 1.

[0028] Further, sealing grooves 8 are formed at both ends of the connecting pipe 1, sealing rings 9 are fixedly installed on the inner walls of the sealing grooves 8, and inserting rings 10 are fixedly installed on the opposite sides of the small-end pipe fitting body 2 and the large-end pipe fitting 3.

[0029] Further, stainless steel pipes 11 are fixedly installed on the inner walls of the connecting pipe 1, the small-end pipe fitting body 2, and the large-end pipe fitting 3.

[0030] Further, the outer wall of the clamping block 15 fits with the inner wall of the clamping groove 12 to prevent the connecting ring 4 from shaking after the clamping block 15 enters the clamping groove 12.

[0031] The overall effect achieved by the entire Embodiment 2 is that during connection, the staff member pulls the pull plate 29, the pull plate 29 drives the baffle 28 to move, the spring 27 is compressed, and the baffle 28 enters the limiting groove 26. When the connection is completed, the staff member releases the pull plate 29, and the elastic force of the spring 27 pushes the baffle 28 to move. One end of the baffle 28 enters the protective groove 30 and contacts the sealing plate 31. At this time, the baffle 28 blocks the storage groove 22, thus preventing moisture and dust from entering the storage groove 22 and further affecting the normal operation of the handle 25, and preventing moisture from entering the second threaded hole 21.

[0032] Working principle: When connecting, the operator slips the connecting ring 4 over the outer wall of the connecting pipe 1 and inserts the two guide rails 6 into the two guide grooves 7 respectively. At this time, the clamping groove 12 moves below the clamping block 15 for convenient positioning. Then, the operator rotates the grip 16, and the grip 16 drives the first threaded rod 14 to rotate, causing the first threaded rod 14 to descend along the first threaded hole 13, thereby driving the clamping block 15 into the clamping groove 12. At this time, the connecting ring 4 is fixed. Then, the operator pulls the pull plate 29, and the pull plate 29 drives the baffle 28 to move, compressing the spring 27. The baffle 28 enters the limit groove 26. Then, the operator rotates the handle 25, and the handle 25 drives the second threaded rod 23 to rotate, causing the second threaded rod 23 to move along the second threaded hole 21, and the connecting block 24 enters the connecting groove 19. At this time, the limit rod 17 is fixed, thus preventing the clamping block 15 from leaving the clamping groove 12 and further improving the connection stability. When the connection is completed, the operator releases the pull plate 29, and the elastic force of the spring 27 pushes the baffle 28 to move. One end of the baffle 28 enters the protection groove 30 and contacts the sealing plate 31. At this time, the baffle 28 blocks the storage groove 22, thus preventing moisture and dust from entering the storage groove 22 and affecting the normal operation of the handle 25, and preventing moisture from entering the second threaded hole 21. When the connecting ring 4 is slipped over the outer wall of the connecting pipe 1, the inclined surface of the insertion ring 10 contacts the sealing ring 9, and the inclined surface of the insertion ring 10 squeezes the sealing ring 9 to compress it. When the insertion ring 10 completely enters the sealing groove 8, the reaction force given by the sealing ring 9 to the insertion ring 10 reduces the gap between the two, further enhancing the sealing performance.

[0033] The above are only the preferred embodiments of the present invention, and do not limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. The reducing pipe fitting with a stainless steel lining includes a connecting pipe (1), and is characterized in that: Both ends of the connecting pipe (1) are respectively provided with a small-head pipe fitting body (2) and a large-head pipe fitting (3). Connecting rings (4) are fixedly installed on the outer walls of the small-head pipe fitting body (2) and the large-head pipe fitting (3). Two clamping grooves (12) are symmetrically formed on the outer wall of the connecting ring (4). Two groups of L-shaped plates (5) are symmetrically installed on the outer wall of the connecting pipe (1). A first threaded hole (13) and an opening (18) are formed through the top of the L-shaped plate (5). A first threaded rod (14) is threadedly connected inside the first threaded hole (13). A clamping block (15) is movably connected to the bottom of the first threaded rod (14). A handle (16) is fixedly installed at the top of the first threaded rod (14). A limiting rod (17) is fixedly installed at the top of the clamping block (15). The limiting rod (17) is slidably connected to the opening (18). A connecting groove (19) is formed on the outer wall of the limiting rod (17). A fixing groove (20) is formed on the inner wall of the opening (18). A storage groove (22) is formed at the top of the L-shaped plate (5). A second threaded hole (21) runs through between the storage groove (22) and the fixing groove (20). A second threaded rod (23) is threadedly connected inside the second threaded hole (21). A connecting block (24) is fixedly installed at one end of the second threaded rod (23). A handle (25) is fixedly installed on the outer wall of the second threaded rod (23).

2. The lined stainless steel reducer pipe fitting according to claim 1, characterized in that: A limiting groove (26) is formed on the inner wall of the storage groove (22). A spring (27) is fixedly installed on the inner wall of the limiting groove (26). A baffle (28) is fixedly installed at one end of the spring (27). A pulling plate (29) is fixedly installed at the top of the baffle (28).

3. The lined stainless steel reducer pipe fitting according to claim 1, characterized in that: A protective groove (30) is formed on the inner wall of the storage groove (22). A sealing plate (31) is fixedly installed on the inner wall of the protective groove (30).

4. The lined stainless steel reducer pipe fitting according to claim 1, wherein: Two guiding grooves (7) are formed on the opposite sides of the two connecting rings (4). Two groups of guide rails (6) are symmetrically installed on the outer wall of the connecting pipe (1).

5. The lined stainless steel reducer pipe fitting according to claim 1, wherein: Sealing grooves (8) are formed at both ends of the connecting pipe (1). Sealing rings (9) are fixedly installed on the inner walls of the sealing grooves (8). Insertion rings (10) are fixedly installed on the opposite sides of the small-head pipe fitting body (2) and the large-head pipe fitting (3).

6. The lined stainless steel reducer pipe fitting according to claim 1, characterized in that: Stainless steel pipes (11) are fixedly installed on the inner walls of the connecting pipe (1), the small-head pipe fitting body (2), and the large-head pipe fitting (3).

7. The lined stainless steel reducer fitting according to claim 1, characterized in that: The outer wall of the clamping block (15) fits with the inner wall of the clamping groove (12).

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