Sealing connecting piece

Abstract

The utility model discloses a sealing connecting piece which comprises an embedded communicating part, the embedded communicating part is installed in an opening, a blocking table is arranged on the periphery of the opening, the top face of the embedded communicating part is a pressing face, the bottom face of the embedded communicating part is an embedded sealing face, the pressing face is provided with a communicating cavity, and the communicating cavity is provided with a sealing groove. The bottom of the communicating cavity is communicated with a connecting threaded pipe exceeding the embedded sealing surface, an upper end cover is arranged in the communicating cavity, and the upper end cover is matched with the communicating cavity in shape and is in threaded connection with the connecting threaded pipe through a screwing part I; and a lower end cover is arranged on the back side of the communicating cavity and is in threaded connection with the connecting threaded pipe through a screwing part II. An existing installation opening threaded connection structure is replaced with an embedded positioning and upper end and lower end sealing connection mode, a plurality of parallel sealing faces can be formed after sealing connection, the design structure of a split type connecting piece is simplified, the blocking table and the clamping groove are designed in an embedded mode, and the sealing performance of the split type connecting piece is improved. And the problems of mounting port abrasion, threaded structure looseness and the like caused by relative rotation between the connecting piece and the mounting port can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical connection structure, concretely relates to a sealed connecting piece. BACKGROUND

[0002] The sealed connecting piece is particularly widely used in the field of chemical packaging. Designers expect to use its sealing, barrier and safety to ensure that the chemical substances in the packaging barrel remain in the barrel during storage and transportation, prevent the chemical substances from reacting with external substances, ensure the quality and performance stability of the chemical substances, and ensure the safety of use.

[0003] Common sealed connecting pieces include threaded connecting pieces, buckle connecting pieces and spinning connecting pieces. The threaded connecting piece is connected by the corresponding threads on the inner side of the barrel cover and the outer side of the barrel mouth. Rubber or plastic sealing rings are often used to enhance the sealing performance. The buckle connecting piece has a relatively simple structure. The buckle on the edge of the barrel cover is connected to the buckle groove of the barrel mouth. A sealing gasket is also used to improve the sealing performance. The spinning connecting piece is tightly connected to the barrel mouth by spinning. The inside of the barrel cover has a sealing ring. The sealing ring is deformed by the pressure generated by spinning to achieve sealing.

[0004] The above-mentioned sealed connecting pieces can be generally divided into two different designs: integrated and split. For the integrated design of the sealed connecting piece, the whole is usually injection molded or molded. The sealing is achieved by the elasticity and shape of the cover body cooperating with the barrel mouth. This structure has the following problems: the elasticity decreases after the material ages, which greatly reduces the sealing performance; the size precision of the sealing structure is high, and the size deviation easily leads to poor sealing; the structure has poor applicability. For the split design of the sealed connecting piece, it is generally composed of a barrel cover, a sealing gasket and a fastening device. The barrel cover is connected to the barrel body by threads. The sealing gasket is placed between the barrel cover and the barrel mouth. The sealing is achieved by the pressure provided by the fastening device. This structure has the following problems: the threaded connection easily causes wear of the installation port, affecting the sealing performance and the convenience of disassembly and assembly; the sealing gasket is easily deformed and aged under long-term pressure, and needs to be replaced regularly; the split structure has many parts, which need to be assembled one by one during installation, and the disassembly and assembly operation is complex. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model provides a sealed connecting piece, which aims to solve the problems of the threaded connecting structure of the commonly used sealed connecting piece, the poor applicability of the structure to different sizes of barrel mouths, and the non-compact design of the split connecting piece.

[0006] The utility model adopts the following technical scheme to solve the technical problem:

[0007] The sealed connecting piece comprises an embedded communication part.

[0008] The top surface of the chimeric communication part is a pressing surface, and the bottom surface is a chimeric sealing surface. The pressing surface is recessed inward in the center to form a communication cavity. The bottom of the communication cavity is connected to a joint threaded pipe that exceeds the chimeric sealing surface. The inner wall and outer wall of the joint threaded pipe are both provided with threaded segments.

[0009] An upper end cover is arranged in the communication cavity. The upper end cover is shaped to match the communication cavity and is threadedly connected to the joint threaded pipe through a screwing portion I.

[0010] A lower end cover is arranged on the back side of the communication cavity. The lower end cover includes a close sealing surface and is threadedly connected to the joint threaded pipe through a screwing portion II.

[0011] The chimeric communication part is installed in a mouth. The outer periphery of the mouth is provided with a blocking table. The chimeric sealing surface is provided with a clamping groove in which the blocking table is embedded. The blocking table and the clamping groove are installed through frictional resistance.

[0012] After the chimeric communication part is installed in the mouth, the chimeric sealing surface and the close sealing surface are respectively sealed against the upper end surface and the lower end surface of the mouth.

[0013] Further, the blocking table is an annular prism with a circular inner circle and a polygonal outer circle in a top view. The outer circle has multiple convex edges. When the blocking table is embedded in the clamping groove, the convex edges are in contact with the inner wall of the clamping groove. The relative rotation between the chimeric communication part and the mouth after the chimeric communication part is embedded in the mouth is prevented by increasing the frictional resistance.

[0014] Further, the blocking table is an annular prism with a circular inner circle and a hexagonal outer circle in a top view. The outer circle has six convex edges.

[0015] Further, the clamping groove is shaped to match the annular prism or the clamping groove is a circular annular groove.

[0016] Further, the blocking table is a circular annular table with a circular inner circle and a circular outer circle in a top view. The clamping groove is a circular annular groove. The circular annular table and the circular annular groove are embedded and installed through interference fit.

[0017] Further, the inner wall upper segment and the outer wall lower segment of the joint threaded pipe are provided as threaded segments.

[0018] Further, the screwing portion I includes a screwing groove hole and an external thread that is connected to the inner wall threaded segment of the joint threaded pipe. The screwing portion II includes a screwing table and an internal thread that is connected to the outer wall threaded segment of the joint threaded pipe.

[0019] Further, the outer diameter of the joint threaded pipe is smaller than the diameter of the mouth.

[0020] Further, after the chimeric communication part is installed in the mouth, the upper end cover is sealed against the bottom of the communication cavity.

[0021] Further, the area of the fitting sealing surface is larger than the area of the fitting sealing surface.

[0022] Further, the area of the fitting sealing surface is larger than the area of the fitting sealing surface.

[0023] The utility model brings the beneficial effect has:

[0024] The utility model discloses a sealed connecting piece, which can be used as a connecting piece of a port.

[0025] The utility model cancels the connecting mode of setting the threaded structure in the port, and replaces it with the mode of fitting positioning + upper and lower end sealing connection, and the space at both ends of the port can be communicated by opening the upper end cover in the use process, and almost no wear of the installation port is generated.

[0026] The sealed connecting piece of the utility model can form a plurality of parallel sealing surfaces after being installed in the port, and the sealing performance of the connecting piece can be effectively improved by the mutual combination of the sealing surfaces, so that the connecting piece no longer depends on a single threaded sealing structure.

[0027] The sealed connecting piece of the utility model simplifies the design structure of the split type connecting piece, and saves small parts such as sealing pads, so that the structure is simple, and the operation is very convenient in the dismounting process.

[0028] The sealed connecting piece of the utility model is of a matched type, and a blocking table is arranged on the outer periphery of the port, and the fitting type design of the blocking table and the clamping groove can effectively prevent the relative rotation between the connecting piece and the installation port, so that the problems of wear of the installation port and easy loosening of the threaded installation port are caused.

[0029] The utility model has high caliber applicability to the installation port, and does not specially limit the caliber of the installation port or whether the installation port has an installation thread, and only needs to be suitable for the fitting structure of the outer periphery of the port and the clamping groove, so that the utility model can be used universally. BRIEF DESCRIPTION OF DRAWINGS

[0030] The utility model will be further described below in combination with the drawings and specific embodiments.

[0031] Figure 1 It is the structure explosion map of the sealed connecting piece of the utility model;

[0032] Figure 2 It is the structure perspective view of the sealed connecting piece of the utility model;

[0033] Figure 3 It is the structure side view of the sealed connecting piece of the utility model;

[0034] Figure 4 It is the structure schematic view of the port involved in the utility model.

[0035] Reference numerals in the drawings:

[0036] 1-chamfered communication part; 11-pressing surface; 12-chamfered sealing surface; 13-communication cavity; 14-adapting threaded tube; 2-upper end cover; 21-screwing part I; 22-screwing slot; 3-lower end cover; 31-chamfered sealing surface; 32-screwing platform; 4-port; 41-retaining platform. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application and the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0038] The present embodiment relates to a sealing connector for a port 4, such as a sealing connection of a chemical barrel port.

[0039] With reference to Figures 1 to 3 , the sealing connector comprises a chamfered communication part 1;

[0040] The top surface of the chamfered communication part 1 is a pressing surface 11, and the bottom surface is a chamfered sealing surface 12. The pressing surface 11 is mainly used for facilitating manual pressing during chamfered installation, and the center is recessed inward to form a communication cavity 13. The bottom of the communication cavity 13 is connected with an adapting threaded tube 14 which exceeds the chamfered sealing surface 12. The adapting threaded tube 14 does not connect with the chamfered sealing surface 12, and a clamping slot is spaced therebetween.

[0041] An upper end cover 2 is arranged in the communication cavity 13, and the upper end cover 2 is shaped to be suitable for the communication cavity 13 and is threadedly connected with the adapting threaded tube 14 through a screwing part I 21. A lower end cover 3 is arranged at the back side of the communication cavity 13, and the lower end cover 3 comprises a chamfered sealing surface 31 and is threadedly connected with the adapting threaded tube 14 through a screwing part II.

[0042] The chamfered communication part 1 is installed in the port 4, which is not an installation port arranged at will. A retaining platform 41 is arranged on the outer periphery of the port 4. A clamping slot is arranged on the chamfered sealing surface 12, and the retaining platform 41 can be embedded in the clamping slot. When the two are chamfered and installed, the retaining platform 41 and the clamping slot are fixed by frictional resistance.

[0043] In the present embodiment, with reference to Figure 4The blocking platform 41 is a frustum-shaped ring with a circular inner circle and a polygonal outer circle in a top view, giving it multiple protruding ridges on the outer circle. Therefore, when the blocking platform 41 is inserted into the slot, it will abut against the inner wall of the slot through the protruding ridges, increasing frictional resistance and preventing excessive relative rotation after the engaging connecting part 1 and the opening 4 are engaged. Specifically, the blocking platform 41 is a frustum-shaped ring with a circular inner circle and a hexagonal outer circle in a top view, giving it six protruding ridges on the outer circle.

[0044] To accommodate the structure of the blocking platform 41, the slot can be set as a groove that matches the shape of the annular truncated pyramid, or the slot can be designed as an annular groove. As long as each protrusion can abut against the outer inner wall of the slot after being inserted, the presence of the protrusions will make it difficult for the inserted connecting part 1 to rotate left and right after being inserted.

[0045] Of course, the style of the blocking platform 41 can also be a circular platform with both the inner and outer rings being circular in the top view. In this case, the slot is also designed as a circular groove, so that the circular platform and the circular groove are fitted together by interference fit, and both provide the required frictional resistance.

[0046] When this sealing connector is installed on Figure 4 After the opening 4 is inserted, the fitting sealing surface 12 and the contact sealing surface 31 respectively seal and abut against the upper and lower end surfaces of the opening 4, i.e., the bucket lid. Simultaneously, the upper end cover 2 seals against the bottom of the connecting cavity 13. Thus, this invention can form multiple parallel sealing surfaces in the horizontal direction. These sealing surfaces combine to improve the overall sealing performance of the connector, eliminating its reliance on a single threaded sealing structure on the inner wall of the opening 4. Furthermore, when this sealing connector is installed inside the opening 4, the connecting threaded tube 14 is not intended to connect with the inner wall or outer edge of the opening 4.

[0047] To ensure basic sealing performance, the area of ​​the fitting sealing surface 31 should be larger than that of the fitting sealing surface 12. During the screwing process, it continuously adheres to and seals the lower end face of the opening 4. At the same time, during the screwing process, the fitting sealing surface 12 is continuously pulled downward, causing it to continuously adhere to and seal the upper end face of the opening 4. The area of ​​the fitting sealing surface 12 should be larger than the projected area of ​​its inner groove.

[0048] In this embodiment, the screwing part I21 includes a screwing slot 22 that is easy to operate with tools and an external thread section that mates with the inner wall thread section of the connecting threaded tube 14; the screwing part II includes a screwing table 32 that is easy to operate manually and an internal thread section that mates with the outer wall thread section of the connecting threaded tube 14.

[0049] For the mouth 4 described in the embodiment, the design of the blocking platform 41 meets the functions of fitting and positioning, and can also serve as a reinforcing strip to improve the structural stability of the barrel cover at the position of the mouth 4. Meanwhile, the sealing connector is suitable for the mouth diameter of the barrel mounting mouth, and the mouth 4 with the same specification blocking platform 41 and a mouth diameter greater than the outer diameter of the connecting threaded pipe 14 can realize sealing communication through the same sealing connector. When the barrel mounting mouth has an inner liner, the use of the sealing connector is not affected.

[0050] It should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sealed connection, characterised in that: The embedded communication part includes a pressing surface and an embedded sealing surface, the pressing surface is recessed in the center to form a communication cavity, the bottom of the communication cavity is connected with a connecting threaded tube beyond the embedded sealing surface, the inner wall and the outer wall of the connecting threaded tube are provided with threaded segments; An upper end cover is arranged in the communication cavity, the upper end cover is suitable for the shape of the communication cavity and is threadedly connected with the connecting threaded tube through a screwing part I; A lower end cover is arranged on the back side of the communication cavity, the lower end cover includes an embedded sealing surface and is threadedly connected with the connecting threaded tube through a screwing part II; The embedded communication part is installed in a port, the outer periphery of the port is provided with a blocking table, the embedded sealing surface is provided with a clamping groove into which the blocking table is embedded, and the blocking table and the clamping groove are installed through friction resistance cooperation; After the embedded communication part is installed in the port, the embedded sealing surface and the embedded sealing surface are respectively sealed against the upper end surface and the lower end surface of the port.

2. The sealing connector according to claim 1, wherein: the blocking table is a ring-shaped prism with a circular inner circle and a polygonal outer circle in a top view, so that the blocking table has a plurality of convex edges on the outer circle, and when the blocking table is embedded in the clamping groove, the convex edges are in contact with the inner wall of the clamping groove to prevent relative rotation of the embedded communication part and the port after the embedded communication part is embedded in the port by increasing the friction resistance.

3. The sealing connector according to claim 2, wherein: the blocking table is a ring-shaped prism with a circular inner circle and a hexagonal outer circle in a top view, so that the blocking table has six convex edges on the outer circle.

4. The sealing connector according to claim 2, wherein: the clamping groove is suitable for the shape of the ring-shaped prism, or the clamping groove is a circular ring-shaped groove.

5. The sealing connector according to claim 1, wherein: the blocking table is a circular ring-shaped table with a circular inner circle and a circular outer circle in a top view, and the clamping groove is a circular ring-shaped groove, and the circular ring-shaped table and the circular ring-shaped groove are embedded and installed through interference fit.

6. The sealing connector according to claim 1, wherein: the inner wall upper segment and the outer wall lower segment of the connecting threaded tube are provided with threaded segments.

7. The sealing connector according to claim 1, wherein: the screwing part I includes a screwing groove hole and an external thread matched with the inner wall threaded segment of the connecting threaded tube, and the screwing part II includes a screwing table and an internal thread matched with the outer wall threaded segment of the connecting threaded tube.

8. The sealing connector according to claim 1, wherein: the outer diameter of the connecting threaded tube is smaller than the diameter of the port.

9. The sealing connector according to claim 1, wherein: the area of the embedded sealing surface is larger than that of the embedded sealing surface.

10. The sealing connector according to claim 1, wherein: the area of the embedded sealing surface is larger than the orthographic projection area of the inner clamping groove. ​

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