Pipe connection structure
By using a direct-connection pipe structure and internal and external clamps, the problems of inner diameter variation and cleaning dead zones in pipe connections are solved, thereby improving material discharge accuracy and cleaning convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SHUNDE KAIZHI PLASTIC PRODUCTS CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the pipe connection structure is complex, and the change in the inner diameter at the joint leads to large errors in the discharge speed and pressure control accuracy, and there are also cleaning dead zones.
The system adopts a direct-connection pipe structure, assembling the first and second pipes through a plug-in method. Inner and outer clamps are used for limiting the flow, ensuring that the inner diameter of the flow channel remains unchanged and that the inner wall of the flow channel is smooth and free of dead corners.
It simplifies and stabilizes pipe connections, avoids changes in the inner diameter at joints, improves discharge accuracy and cleaning convenience, and reduces food safety risks.
Smart Images
Figure CN224551013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connection technology, and more specifically to a pipe connection structure. Background Technology
[0002] Currently, most commercial beverage machines on the market use connectors or pins to connect pipes. For example, Chinese Patent No. CN202422366119.2 discloses a pipe connection structure and coffee machine in which two pipe ends are connected by a connector. The connector structure is complex, and the inner diameter of the connector is larger than the inner diameter of the two pipe ends. The pipes connected by this method have obvious uneven steps inside, which can easily leave cleaning dead corners. At the same time, the change in the inner diameter at the connector makes it impossible to control the dispensing speed and pressure, resulting in large accuracy errors. Utility Model Content
[0003] In view of this, the present invention provides a pipe connection structure for direct pipe connection, which effectively solves the problems of flow channel inner diameter variation, large accuracy error and cleaning dead corners that occur when pipes are connected by joints and other methods.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: a pipe connection structure, comprising:
[0005] The first pipe includes: a first pipe body and a connector disposed on a first end face of the first pipe body, wherein a radially protruding first protrusion is provided on the peripheral side of the connector; the connector is fitted with an inner clamp, which is located between the first end face and the first protrusion.
[0006] The second pipe includes: a second pipe body, the second end face of which is provided with a slot; a locking position is provided in the slot corresponding to the inner clamp; after the first pipe and the second pipe are inserted, the insertion part is inserted into the slot, the first end face of the first pipe body abuts against the second end face of the second pipe body; the bottom surface of the inner clamp abuts against the limiting surface of the locking position to prevent the insertion part from exiting the slot;
[0007] External clamps are installed outside the first and second pipes and cover the connection between the first and second pipes.
[0008] In this technology, the first and second pipes are directly assembled by plugging in, eliminating the need for connectors, simplifying the structure, and making the assembly simple and convenient. After assembly, the plug-in part is limited in the slot part by an internal clamp, ensuring a firm fit. After the first and second pipes are assembled, a flow channel is formed inside, with no change in the inner diameter of the flow channel. The inner wall of the flow channel is smooth and without dead corners, effectively controlling the discharge speed and pressure, and improving the discharge accuracy.
[0009] As a preferred embodiment of the present invention, the first protrusion is provided with a first guide surface;
[0010] A third guide surface is provided at the slot opening of the slot portion;
[0011] In this technology, during the insertion process of the first pipe and the second pipe, the insertion part is guided into the slot part by the cooperation of the first guide surface and the third guide surface.
[0012] As a preferred embodiment of this utility model, the inner clamp is provided with a second guide surface; the first guide surface and the second guide surface have the same inclination angle; in this technology, the first guide surface can guide the inner clamp to be installed in the insertion part and is located between the first protrusion and the first end face of the first tube body; at the same time, the second guide surface and the third guide surface cooperate to guide the inner clamp to be inserted into the slot part.
[0013] As a preferred embodiment of this utility model, the first protrusion protrudes radially by a distance L1 on the insertion part; the inner clamp protrudes radially by a distance L2 on the insertion part, and L2 is greater than L1; in this technology, the radial protrusion distance L2 of the inner clamp is limited to be greater than the radial protrusion distance L1 of the first protrusion. After the insertion part is inserted into the slot part, the bottom surface of the inner clamp abuts against the limiting surface of the locking position to prevent the insertion part from exiting the slot part.
[0014] In a preferred embodiment of this invention, the card is radially opened within the slot, and the inner clamp is at least partially engaged within the card slot; one inner surface of the card slot forms the limiting surface. This technology defines a specific implementation of the card slot, where the card slot and the inner clamp cooperate to achieve limiting.
[0015] In a preferred embodiment of this utility model, the upper surface of the inner clamp abuts against the bottom surface of the first protrusion; in this technology, after the first pipe and the second pipe are assembled, the inner clamp abuts between the first protrusion and the limiting surface of the clamping position, effectively preventing the inner clamp from shifting.
[0016] As a preferred embodiment of this utility model, the surface of the plug-in portion is provided with a groove, and the inner clamp is engaged in the groove; in this technology, the groove is to enable the inner clamp to be positioned and installed in the plug-in portion, and to prevent the inner clamp from shifting axially.
[0017] As a preferred embodiment of this utility model, the external clamp includes: a first clamp component and a second clamp component; the first clamp component and the second clamp component are combined and installed at the connection between the first pipe and the second pipe; in this technology, the external clamp enhances the stability of the connection between the first pipe and the second pipe, preventing the first end face of the first pipe and the second end face of the second pipe from being poorly sealed; the external clamp can enhance the strength of the sealing area between the first end face and the second end face, thereby improving the radial strength of the sealing area between the first end face and the second end face.
[0018] In a preferred embodiment of this invention, the first clamp component and the second clamp component are provided with a first reverse clamping groove corresponding to the first pipe; the first clamp component and the second clamp component are provided with a second reverse clamping groove corresponding to the second pipe. In this technology, the outer clamp provides a counterforce to the separation of the first pipe and the second pipe, preventing the first end face and the second end face from being incompletely sealed.
[0019] As a preferred embodiment of this utility model, the first reverse groove has a first inclined surface, and the second reverse groove has a second inclined surface; the first inclined surface and the second inclined surface are inclined in opposite directions; in this technology, since the first pipe and the second pipe are pulled apart in opposite directions when they separate, the first inclined surface and the second inclined surface are set to be in opposite directions to provide the opposite force for the separation of the first pipe and the second pipe.
[0020] The remaining beneficial technical effects of this utility model are embodied in the specific embodiments. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0022] Figure 1 This is an exploded view of the present invention;
[0023] Figure 2 This is a combined diagram of the present utility model;
[0024] Figure 3 for Figure 2 Cross-sectional view of line AA in the middle;
[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0026] Figure 5 for Figure 3 Enlarged view of point B in the middle;
[0027] Figure 6 This is a schematic diagram of the second pipe in this utility model;
[0028] Figure 7 for Figure 6 Cross-sectional view of the middle BB line;
[0029] Figure 8 for Figure 7 Enlarged view of point C in the middle;
[0030] Figure 9This is a schematic diagram of the first pipe in this utility model;
[0031] Figure 10 for Figure 9 Enlarged view of point D in the middle.
[0032] Explanation of reference numerals in the attached figures
[0033] First pipe 100; First pipe body 110; First end face 111; Insertion part 120; First protrusion 121; First guide surface 1211; Fourth guide surface 122; Second pipe 200; Second pipe body 210; Second end face 211; Slot part 220; Locking position 221; Limiting surface 2211; Third guide surface 222; Inner clamp 300; Bottom surface 310; Upper surface 320; Second guide surface 330; Outer clamp 400; First reverse groove 401; First inclined surface 4011; Second reverse groove 402; Second inclined surface 4021; First clamp component 410; Second clamp component 420. Detailed Implementation
[0034] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.
[0035] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] Pipe connection structure, such as Figure 1-10As shown, it includes: a first pipe 100, a second pipe 200, an inner clamp 300 and an outer clamp 400. The inner diameters of the first pipe 100 and the second pipe 200 are equal, and the inner walls of the first pipe 100 and the second pipe 200 are both smooth surfaces. One end of the first pipe 100 and the second pipe 200 are connected, and the first pipe 100 and the second pipe 200 are limited and connected by the inner clamp 300 and the outer clamp 400.
[0038] like Figure 9-10 As shown, the first pipe 100 includes: a first pipe body 110 and a connector 120 disposed on the first end face 111 of the first pipe body 110. Specifically, the end of the first pipe body 110 connected to the second pipe body 210 forms the first end face 111, which is a smooth plane. The connector 120 protrudes from the first end face 111 toward the second pipe 200. The connector 120 is annular and integrally formed with the first pipe body 110. The inner diameter of the connector 120 is the same as the inner diameter of the first pipe body 110.
[0039] The peripheral side of the plug portion 120 is provided with a radially protruding first protrusion 121. The first protrusion 121 is arranged in a ring shape and protrudes radially from the peripheral side of the plug portion 120. The first protrusion 121 is integrally formed with the plug portion 120.
[0040] The insertion part 120 is equipped with an inner clamp 300, which is arranged in a ring and is sleeved on the insertion part 120. The inner clamp 300 is located between the first end face 111 and the first protrusion 121.
[0041] like Figure 6-8 As shown, the second pipe 200 includes: a second pipe body 210, a slot portion 220 is provided on the second end face 211 of the second pipe body 210, the slot portion 220 is recessed from the second end face 211 in a direction away from the first pipe 100, and a locking position 221 is provided in the slot portion 220 corresponding to the inner clamp 300.
[0042] During assembly, first install the inner clamp 300 onto the insertion part 120, then... Figure 1 As shown, the first pipe 100 and the second pipe 200 are inserted vertically in the axial direction. After insertion, the insertion part 120 is inserted into the slot part 220. The first end face 111 of the first pipe body 110 abuts against the second end face 211 of the second pipe body 210. The bottom surface 310 of the inner clamp 300 abuts against the limiting surface 2211 of the clamping position 221.
[0043] The second pipe 200 is defined as fixed, and the first pipe 100 and the second pipe 200 are connected because the first end face 111 and the second end face 211 are abutted. The first pipe 100 cannot move further down. The first pipe 100 cannot move upward because the bottom surface 310 of the inner clamp 300 is abutted against the limiting surface 2211 of the locking position 221. This prevents the insertion part 120 from exiting the slot part 220. In this way, the first pipe 100 and the second pipe 200 are assembled tightly and stably.
[0044] Furthermore, such as Figure 4 As shown, the distance by which the plug portion 120 protrudes from the first end face 111 is the same as the depth of the slot portion 220. Therefore, after assembly, the end face of the plug portion 120 also contacts the inner bottom wall of the slot portion 220.
[0045] The outer clamp 400 is installed outside the first pipe 100 and the second pipe 200 and covers the connection between the first pipe 100 and the second pipe 200, further reinforcing the connection between the first pipe 100 and the second pipe 200, and preventing the first end face 111 of the first pipe body 110 and the second end face 211 of the second pipe body 210 from being poorly sealed.
[0046] After the first pipe 100 and the second pipe 200 are assembled, their inner diameter remains unchanged. When used in commercial beverage machines, such as commercial milk tea machines, the smooth inner wall of the pipes, without any uneven steps, makes them easy to clean after use and leaves no dead corners for cleaning. Since the inner diameter of the pipes is uniform and does not change, it is possible to accurately control the discharge speed and control the pressure, avoiding the accuracy error caused by the change in inner diameter at the joints in traditional methods.
[0047] In one implementation, such as Figure 10 As shown, the first protrusion 121 is provided with a first guide surface 1211; as Figure 8 As shown, a third guide surface 222 is provided at the slot opening of the slot portion 220; the first guide surface 1211 and the third guide surface 222 cooperate to guide the insertion portion 120 into the slot portion 220.
[0048] Specifically, the third guide surface 222 is provided at the slot opening of the slot portion 220, which increases the width of the slot opening of the slot portion 220, making it easier for the insertion portion 120 to be inserted into the slot portion 220. It also facilitates the guidance of the first protrusion 121 and the inner clamp 300 provided on the insertion portion 120 into the slot portion 220.
[0049] In one embodiment, the inner clamp 300 is provided with a second guide surface 330; the first guide surface 1211 and the second guide surface 330 have the same inclination angle;
[0050] 300 inner clamps Figure 10As shown, the inner clamp 300 is inserted into the plug part 120 from top to bottom. During the installation process, the inner clamp 300 is inserted between the first protrusion 121 and the first end face 111 under the guidance of the first guide surface 1211.
[0051] The first guide surface 1211, the second guide surface 330 and the third guide surface 222 have the same inclination angle. During the process of inserting the plug part 120 into the slot part 220, the third guide surface 222 cooperates with the first guide surface 1211 and the second guide surface 330 to guide the plug part 120 into the slot part 220.
[0052] Furthermore, continue as Figure 10 As shown, the opening of the plug-in portion 120 may also be provided with a fourth guide surface 122. The fourth guide surface 122 may have the same inclination angle as the first guide surface 1211, the second guide surface 330, and the third guide surface 222. Its function is also to guide the plug-in portion 120 to be inserted into the slot portion 220.
[0053] Furthermore, such as Figure 10 As shown, the first protrusion 121 protrudes radially from the insertion part 120 by a distance L1; the inner clamp 300 protrudes radially from the insertion part 120 by a distance L2, and L2 is greater than L1.
[0054] Furthermore, such as Figure 4 and Figure 7 As shown, the locking position 221 is radially opened inside the slot portion 220. After the first pipe 100 and the second pipe 200 are assembled, the inner clamp 300 is at least partially locked in the locking position 221. One inner surface of the locking position 221 forms a limiting surface 2211, and the bottom surface 310 of the inner clamp 300 abuts against the limiting surface 2211 of the locking position 221.
[0055] Furthermore, the upper surface 320 of the inner clamp 300 abuts against the bottom surface of the first protrusion 121, as shown below. Figure 4 As shown, after the first pipe 100 and the second pipe 200 are assembled, the upper surface 320 of the inner clamp 300 abuts against the bottom surface of the first protrusion 121, and the insertion part 120 cannot disengage upward from the inner clamp 300 and then disengage from the slot part 220; the bottom surface 310 of the inner clamp 300 abuts against the limiting surface 2211, and the insertion part 120 cannot disengage upward from the slot part 220 together with the inner clamp 300, thus ensuring assembly stability.
[0056] Furthermore, in order to prevent the inner clamp 300 from moving on the insertion part 120, a groove is provided on the surface of the insertion part 120, and the inner clamp 300 is engaged in the groove;
[0057] Continue as Figure 4As shown, during the insertion of the inner clamp 300 into the slot 220, since the outer diameter of the inner clamp 300 is greater than the width of the slot and the width of the slot 220, the inner clamp 300 pushes the slot 220 to slightly deform and open as the insertion part 120 is inserted. After the inner clamp 300 is inserted into the locking position 221, the deformation of the slot 220 returns to normal, and the inner clamp 300 is locked in the locking position 221.
[0058] Alternatively, the first protrusion 121 may also be received in the slot 221, or a receiving groove for receiving the first protrusion 121 may be radially formed in the slot portion 220.
[0059] In one implementation, such as Figure 1 and Figure 5 As shown, the outer clamp 400 includes: a first clamp component 410 and a second clamp component 420; the first clamp component 410 and the second clamp component 420 are combined and installed at the connection between the first pipe 100 and the second pipe 200.
[0060] Specifically, the first clamp component 410 and the second clamp component 420 are symmetrically arranged and have the same structure. They cover the connection between the first pipe 100 and the second pipe 200 from the left and right sides. After the outer clamp 400 is installed, the middle part of the outer clamp 400 corresponds to the connection between the first pipe 100 and the second pipe 200. The first clamp 410 and the second clamp 420 can be assembled by means of strap connection, buckle connection, pin connection, etc. Depending on the material of the first clamp 410 and the second clamp 420, there can be other combination forms. For example, if the first clamp 410 and the second clamp 420 are made of metal, they can be assembled by welding. If the first clamp 410 and the second clamp 420 are made of plastic, they can be assembled by means of adhesive, ultrasonic heat fusion, etc.
[0061] Furthermore, such as Figure 1 and Figure 5 As shown, the first clamping member 410 and the second clamping member 420 are provided with a first reverse clamping groove 401 corresponding to the first pipe 100, and the first reverse clamping groove 401 has a first inclined surface 4011; the first clamping member 410 and the second clamping member 420 are provided with a second reverse clamping groove 402 corresponding to the second pipe 200, and the second reverse clamping groove 402 has a second inclined surface 4021; the first inclined surface 4011 and the second inclined surface 4021 are inclined in opposite directions.
[0062] Continue as Figure 5 As shown, the first inclined surface 4011 is inclined from bottom to top away from the axis of the first pipe 100, and the second inclined surface 4021 is inclined from top to bottom away from the axis of the second pipe 200.
[0063] After installation, the external clamp 400 can provide a counterforce for the first pipe 100 and the second pipe 200 to disengage, i.e. Figure 2 When the first pipe 100 and the second pipe 200 are removed, the first pipe 100 is pulled upward and the second pipe 200 is pulled downward. The outer clamp 400 provides a downward force for the first pipe 100 and an upward force for the second pipe 200. Therefore, the outer clamp 400 can prevent the first end face 111 of the first pipe 100 and the second end face 211 of the second pipe 200 from being poorly sealed.
[0064] The external clamp 400 described above, after installation, can provide a counterforce to the first pipe 100 and the second pipe 200 to separate them. This force can come from the friction between the external clamp 300 and the first pipe 100 and the second pipe 200.
[0065] The outer clamp 400 can strengthen the sealing strength of the first end face 111 and the second end face 211, thereby increasing the radial strength of the connection between the first pipe 100 and the second pipe 200. Figure 2 As shown, after the outer clamp 400 is installed, the overall radial width of the connection between the first pipe 100 and the second pipe 200 is increased, and the connection between the first pipe 100 and the second pipe 200 is less likely to separate or break in the event of an impact.
[0066] like Figure 1 As shown, the lower end (i.e., the first end face) of the first pipe 100 is provided with a plug part 120, and the upper end (i.e., the second end face) of the second pipe 200 is provided with a slot part 220. The first pipe 100 and the second pipe 200 are connected vertically.
[0067] Optionally, the upper end of the first pipe 100 may also be provided with a plug-in portion 120, or the upper end of the first pipe 100 may be provided with a slot portion with the same structure as described above; the lower end of the second pipe 200 may also be provided with a slot portion 220, or the lower end of the second pipe 200 may be provided with a plug-in portion with the same structure as described above; thereby enabling the connection between multiple pipes.
[0068] Similarly, after multiple pipes are connected, external clamps are installed at the connection points.
[0069] In this embodiment, the first pipe 100 and the second pipe 200 are both straight pipes. In other embodiments, the first pipe 100 and the second pipe 200 can also be configured as bent pipes, L-shaped pipes, etc., and the connection structure and connection method between multiple pipes remain unchanged.
[0070] This technology is applied to commercial beverage machines, such as commercial milk tea machines. After multiple pipes are connected, an internal flow channel is formed. The diameter of the internal flow channel remains unchanged, effectively improving the dispensing accuracy. After multiple pipes are connected, there are no uneven areas inside the connection points, meaning there are no dead corners for cleaning, making cleaning more convenient, using it more hygienic, and reducing food safety risks.
[0071] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0072] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
Claims
1. A pipe connection structure, characterized in that: include: The first pipe (100) includes: a first pipe body (110) and a plug portion (120) disposed on a first end face (111) of the first pipe body (110). The peripheral side of the plug portion (120) is provided with a radially protruding first protrusion (121). The plug portion (120) is equipped with an inner clamp (300), which is located between the first end face (111) and the first protrusion (121). The second pipe (200) includes: a second pipe body (210), the second end face (211) of the second pipe body (210) is provided with a slot (220); a locking position (221) is provided in the slot (220) corresponding to the inner clamp (300); after the first pipe (100) and the second pipe (200) are inserted, the insertion part (120) is inserted into the slot (220), the first end face (111) of the first pipe body (110) abuts against the second end face (211) of the second pipe body (210); the bottom surface (310) of the inner clamp (300) abuts against the limiting surface (2211) of the locking position (221) to prevent the insertion part (120) from exiting the slot (220); An external clamp (400) is installed outside the first pipe (100) and the second pipe (200) and covers the connection between the first pipe (100) and the second pipe (200).
2. The pipe connection structure according to claim 1, characterized in that: The first protrusion (121) is provided with a first guide surface (1211); A third guide surface (222) is provided at the slot opening of the slot portion (220); The first guide surface (1211) and the third guide surface (222) cooperate to guide the insertion part (120) into the slot part (220).
3. The pipe connection structure according to claim 2, characterized in that: The inner clamp (300) is provided with a second guide surface (330); the first guide surface (1211) and the second guide surface (330) have the same inclination angle.
4. The pipe connection structure according to claim 3, characterized in that: The first protrusion (121) protrudes radially by a distance L1 on the insertion part (120); the inner clamp (300) protrudes radially by a distance L2 on the insertion part (120), and L2 is greater than L1.
5. The pipe connection structure according to claim 1, characterized in that: The locking position (221) is radially opened within the slot portion (220), and the inner clamp (300) is at least partially engaged within the locking position (221); one inner surface of the locking position (221) forms the limiting surface (2211).
6. The pipe connection structure according to claim 1, characterized in that: The upper surface (320) of the inner clamp (300) abuts against the bottom surface of the first protrusion (121).
7. The pipe connection structure according to claim 1, characterized in that: The surface of the plug (120) is provided with a groove, and the inner clamp (300) is engaged in the groove.
8. The pipe connection structure according to any one of claims 1-7, characterized in that: The external clamp (400) includes: a first clamp component (410) and a second clamp component (420); the first clamp component (410) and the second clamp component (420) are combined and installed at the connection between the first pipe (100) and the second pipe (200).
9. The pipe connection structure according to claim 8, characterized in that: The first clamping member (410) and the second clamping member (420) are provided with a first reverse clamping groove (401) corresponding to the first pipe (100); the first clamping member (410) and the second clamping member (420) are provided with a second reverse clamping groove (402) corresponding to the second pipe (200).
10. The pipe connection structure according to claim 9, characterized in that: The first reverse slot (401) has a first inclined surface (4011), and the second reverse slot (402) has a second inclined surface (4021); The first inclined plane (4011) and the second inclined plane (4021) are inclined in opposite directions.