Quick connection plumbing fitting

Abstract

The utility model discloses a water supply and drainage pipeline quick connecting pipe fitting, including sleeve, both ends of sleeve outside are all fixedly connected with the limit bushing of symmetrical distribution, the bushing in -side limit slidingly connected with the fixed link of the bushing of going through, one end fixed link is connected with the push ring, the push ring outside contact has extrusion block, the fixed link outside other end fixedly connected with the rack, the rack outside is connected with the gear of engagement, through the drainage pipe is inserted into the sleeve, then after the limit of operating lever is removed, and the operating lever is pulled and is rotated, further control both sides fixed link pull both sides push ring extrude corresponding extrusion block, when extruding the drainage pipe through the rubber cover in the process of the extrusion block of upper and lower arc shape setting and each other, under the premise of guaranteeing the reliability of water supply and drainage pipeline connection and reducing the labor intensity of operating personnel, the drainage pipe is connected fast and conveniently.

Description

Technical Field

[0001] This utility model relates to the field of water supply and drainage pipeline technology, and in particular to quick-connect fittings for water supply and drainage pipelines. Background Technology

[0002] In water supply and drainage engineering, pipe connection is a crucial link, and the quality of the connection method directly affects the project quality and subsequent maintenance costs. Traditional water supply and drainage pipe connections often use bolts with flanges. Although this method has a certain degree of sealing and stability, it has many drawbacks. First, the installation process is cumbersome and time-consuming, requiring the tightening of multiple bolts one by one. Especially for large-scale pipeline laying projects, the installation efficiency is extremely low, making it difficult to meet the needs of urgent projects or projects with tight schedules. Second, it is labor-intensive, requiring operators to use wrenches and other tools to apply large torques, which is even more difficult in confined spaces, resulting in high labor costs. Furthermore, the tightening degree of bolts is not easy to control evenly, which may lead to poor sealing. Moreover, bolts are easily loosened by factors such as vibration and temperature changes, which can cause water leakage and other problems, affecting the normal operation of the pipeline system. Therefore, to address the above issues, quick-connect fittings for water supply and drainage pipes are proposed. Utility Model Content

[0003] The technical problem to be solved by this utility model overcomes the existing defects and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A quick-connect fitting for water supply and drainage pipelines includes a sleeve. Symmetrically distributed limiting sleeves are fixedly connected to both the front and rear ends of the sleeve. A fixed rod, penetrating the limiting sleeve, is slidably connected to the inner side of each limiting sleeve. A push ring is fixedly connected to one end of the fixed rod, and a clamping block contacts the outer side of the push ring. A rack is fixedly connected to the other end of the fixed rod, and a gear is meshed with the outer side of the rack. A fixed shaft, rotatably connected to the sleeve, is fixedly connected to the center of the gear. An operating rod is fixedly connected to the other end of the fixed shaft. A positioning plate, fixedly connected to the sleeve, is at the bottom of the operating rod. The positioning plate has evenly distributed slots at both the front and rear ends of its outer side.

[0006] As a further improvement of this utility model, the clamping block is arranged in an arc shape, and one end of the outer side of the clamping block is inclined. The inclined part of the outer side of the clamping block contacts the sleeve, and the part of the sleeve that contacts the clamping block is also inclined.

[0007] As a further improvement of this utility model, both the left and right ends of the inner side of the sleeve are in contact with rubber sleeves, and one end of the outer side of the rubber sleeve is in contact with the squeezing block.

[0008] As a further improvement of this utility model, the positioning plate is arranged in an arc shape, and the center of the arc-shaped positioning plate coincides with the rotation center of the operating rod and the center of the fixed shaft.

[0009] As a further improvement of this utility model, a spring is fixedly connected to the top inner side of the operating rod, and a pull rod with a limit sliding on the top inner side of the operating rod is fixedly connected to the other end of the spring. A retaining shaft that passes through the operating rod is fixedly connected to the bottom end of the pull rod, and the retaining shaft is slidably connected to the operating rod. The bottom of the retaining shaft is located in a groove on the outside of the positioning plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] By inserting the drain pipe into the sleeve, and then pulling the operating rod to rotate after releasing the limit of the operating rod, the fixed rods on both sides are further controlled to pull the push rings on both sides to squeeze the corresponding clamping blocks. When the upper and lower arc-shaped clamping blocks approach each other, the drain pipe is squeezed by the rubber sleeve. This achieves quick and convenient connection of the drain pipe while ensuring the reliability of the drain pipe connection and reducing the labor intensity of the operator. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] Figure 1 This is a schematic diagram of the overall structure of the quick-connect fitting for water supply and drainage pipes of this utility model.

[0014] Figure 2 This is a schematic diagram of the installation structure of the gear for quick connection of water supply and drainage pipes according to this utility model.

[0015] Figure 3 This is a cross-sectional structural diagram of the quick-connect pipe fitting for water supply and drainage pipes according to this utility model.

[0016] Figure 4 This is a schematic diagram of the connection between the clamping block and the push ring of the quick-connect fitting for water supply and drainage pipes according to this utility model.

[0017] Figure 5 This is a cross-sectional view of the operating rod of the quick-connect pipe fitting for water supply and drainage pipes according to this utility model.

[0018] In the diagram: 1. Sleeve; 2. Limiting sleeve; 3. Fixing rod; 4. Push ring; 5. Clamping block; 6. Rubber sleeve; 7. Rack; 8. Gear; 9. Fixing shaft; 10. Operating rod; 11. Positioning plate; 12. Spring; 13. Pull rod; 14. Locking shaft. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. All parts involving precision gear structures and rotating structures are provided with protective structures and sealing mechanisms, which will not be repeated in this application. It is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1

[0021] like Figure 1-5 As shown, the quick-connect fitting for water supply and drainage pipes includes a sleeve 1. Symmetrically distributed limiting sleeves 2 are fixedly connected to both the front and rear ends of the outer side of the sleeve 1. A fixed rod 3, penetrating the limiting sleeve 2, is slidably connected to the inner side of the limiting sleeve 2. A push ring 4 is fixedly connected to one end of the fixed rod 3. A clamping block 5 contacts the outer side of the push ring 4. A rack 7 is fixedly connected to the other end of the fixed rod 3. A gear 8 is meshed with the outer side of the rack 7. A fixed shaft 9, rotatably connected to the sleeve 1, is fixedly connected to the center of the gear 8. An operating rod 10 is fixedly connected to the other end of the fixed shaft 9. A positioning plate 11, fixedly connected to the sleeve 1, is at the bottom of the operating rod 10. The positioning plate 11 has evenly distributed slots at both the front and rear ends of its outer side.

[0022] Furthermore, such as Figure 1-4 As shown, the clamping block 5 is arc-shaped, and one of its outer ends is inclined. The inclined portion of the clamping block 5 contacts the sleeve 1, and the portion of the sleeve 1 that contacts the clamping block 5 is also inclined. By making one of the outer ends of the arc-shaped clamping block 5 inclined, and simultaneously making the portion of the sleeve 1 that contacts the clamping block 5 inclined, it is convenient to control the clamping of the drain pipe as the two clamping blocks 5 approach each other when the clamping block 5 is squeezed by the push ring 4.

[0023] Furthermore, such as Figure 2-3 As shown, the inner left and right ends of the sleeve 1 are in contact with rubber sleeves 6, and one end of the outer side of the rubber sleeve 6 is in contact with the squeezing block 5. By squeezing the drain pipe through the rubber sleeve 6, the sealing and stability of the drain pipe connection are improved.

[0024] Furthermore, such as Figure 1-3As shown, the positioning plate 11 is arc-shaped, and the center of the arc-shaped positioning plate 11 coincides with the rotation center of the operating rod 10 and the center of the fixed shaft 9. By making the positioning plate 11 arc-shaped and coinciding with the rotation center of the operating rod 10 and the center of the fixed shaft 9, it is convenient to control the bottom of the operating rod 10 to move along the positioning plate 11, thereby facilitating the subsequent repositioning of the rotated operating rod 10.

[0025] Furthermore, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a spring 12 is fixedly connected to the top inner side of the operating lever 10. The other end of the spring 12 is fixedly connected to a pull rod 13 that slides on the top inner side of the operating lever 10. A retaining shaft 14 that passes through the operating lever 10 is fixedly connected to the bottom end of the pull rod 13, and the retaining shaft 14 is slidably connected to the operating lever 10. The bottom of the retaining shaft 14 is located in a slot on the outside of the positioning plate 11. By pulling the pull rod 13 to compress the spring 12, the retaining shaft 14 is moved out of the slot on the outside of the positioning plate 11, which facilitates the release of the limit on the operating lever 10. By releasing the pull rod 13, the bottom of the retaining shaft 14 is reset in the slot at the corresponding position on the outside of the positioning plate 11, which facilitates the re-limiting of the rotated operating lever 10.

[0026] The connection principle of the drain pipe: Insert the drain pipe to be connected into the sleeve 1 and make contact with the rubber sleeve 6. Then, after releasing the limit of the operating rod 10, pull the operating rod 10 to rotate. At this time, the operating rod 10 will drive the gear 8 to mesh with the rack 7 through the fixed shaft 9. The rack 7 will pull the push ring 4 through the fixed rod 3 to squeeze the clamping block 5. After the arc-shaped clamping block 5 contacts the inclined part of the sleeve 1 on the outer side, the symmetrically distributed clamping blocks 5 will move closer to each other during the deformation process and squeeze the drain pipe through the rubber sleeve 6, thus realizing the quick connection of the drain pipe. After connection, release the pull of the pull rod 13 to reset the locking shaft 14 in the corresponding slot on the outside of the positioning plate 11. According to the "Standard for Manual Operating Force" in the "Mechanical Design Manual", the comfortable force for an adult to turn the operating rod with one hand is 10-30N. In this solution, the driving force for pulling the operating rod 10 to rotate is derived to be 12.5-16.7N. This force value is both transmitted by the gear 8 and rack 7 and squeezed by the clamping block 5 to make the rubber sleeve 6 clamp the drain pipe to meet the sealing requirements, and it is also in line with the ergonomic manual operation range, which can be easily operated without additional tools.

[0027] The above are preferred embodiments of the present invention. The basic principles, main features, and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope thereof. All such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-connect fitting for water supply and drainage pipes, including a sleeve (1), characterized in that: The sleeve (1) is fixedly connected to symmetrically distributed limiting sleeves (2) at both the front and rear ends. The limiting sleeves (2) are slidably connected to the inner side of the limiting sleeves (2) and a fixed rod (3) that passes through the limiting sleeves (2). One end of the fixed rod (3) is fixedly connected to a push ring (4). The outside of the push ring (4) is in contact with a squeezing block (5). The other end of the fixed rod (3) is fixedly connected to a rack (7). The outside of the rack (7) is meshed with a gear (8). The center of the gear (8) is fixedly connected to a fixed shaft (9) that is rotatably connected to the sleeve (1). The other end of the fixed shaft (9) is fixedly connected to an operating rod (10). The bottom of the operating rod (10) is in contact with a positioning plate (11) that is fixedly connected to the sleeve (1). The positioning plate (11) has uniformly distributed slots at both the front and rear ends.

2. The quick-connect fitting for water supply and drainage pipes according to claim 1, characterized in that: The clamping block (5) is arranged in an arc shape, and one end of the clamping block (5) is inclined. The inclined part of the clamping block (5) contacts the sleeve (1), and the part of the sleeve (1) that contacts the clamping block (5) is also inclined.

3. The quick-connect fitting for water supply and drainage pipes according to claim 1, characterized in that: The sleeve (1) has rubber sleeves (6) in contact with both the left and right ends of its inner side, and one end of the rubber sleeve (6) is in contact with the squeezing block (5).

4. The quick-connect fitting for water supply and drainage pipes according to claim 1, characterized in that: The positioning plate (11) is arc-shaped, and the center of the arc-shaped positioning plate (11) coincides with the rotation center of the operating lever (10) and the center of the fixed shaft (9).

5. The quick-connect fitting for water supply and drainage pipes according to claim 1, characterized in that: A spring (12) is fixedly connected to the top inner side of the operating rod (10). The other end of the spring (12) is fixedly connected to a pull rod (13) that slides on the top inner side of the operating rod (10). A retaining pin (14) that passes through the operating rod (10) is fixedly connected to the bottom end of the pull rod (13). The retaining pin (14) is slidably connected to the operating rod (10). The bottom of the retaining pin (14) is located in a slot on the outside of the positioning plate (11).

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