A pipe connection device for a wet shotcrete machine

Abstract

This invention discloses a pipe connection device for a wet shotcrete machine, relating to the field of pipe connection technology. It includes a discharge pipe and an extension pipe, coaxially arranged. The device also includes an installation component, a plug-in component, and a cleaning component. The installation component is located outside the discharge pipe and is used to fix its position. The installation component includes a connecting sleeve, a threaded sleeve, a limiting sleeve, a limiting spring, a driven slider, and an installation groove. The connection, threaded sleeve, positioning sleeve, and fixing sleeve ensure rapid installation of the pipe connector via a threaded connection. Different directions of resistance are applied internally and externally to prevent threaded connection failure. The inclined plane inside the pipe connector changes the flow rate of the concrete material, preventing concrete residue. The drain cavity flushes the inside of the pipe connector, further preventing concrete residue.

Description

Technical Field

[0001] This invention relates to the field of pipe connection joint technology, specifically to a pipe connection joint device for a wet shotcrete machine. Background Technology

[0002] Wet shotcrete machines, also known as mining wet shotcrete machines, are industrial equipment that uses a wet spraying process to form a support layer of concrete or mortar. They are mainly used in fields such as mine support, tunnel engineering, slope greening, and ecological restoration.

[0003] An existing invention patent with publication number CN118757627A discloses a sprinkler pipe connection joint that facilitates quick disassembly and installation. It consists of a female connector and a male connector. The female connector has an outer sleeve on its outer side and an inner sleeve inside. A trigger ring is located on the inner sleeve. One end of the inner sleeve has a second sealing groove, inside which is a receiving groove. The inner side of the inner sleeve has a threaded groove and a sliding groove. A second elastic element is located at the end of the inner sleeve away from the second sealing groove, and a spiral sealing sleeve is located on the second elastic element. A connecting ring is located at the end of the second elastic element away from the inner sleeve. The trigger ring has an external thread on its outer side that matches the threaded groove. The trigger ring is threadedly connected to the inside of the inner sleeve through the threaded groove. A blade is located on the inner side of the trigger ring, and a sliding groove is located at one end of the trigger ring. The block and slider are slidably connected inside the slide groove. A top ring is provided on the side of the slider away from the trigger ring. The receiving groove is adapted to the top ring. A third elastic element is provided on the slider. The third elastic element is located inside the slide groove. A limit rod is provided in the middle of the third elastic element. This allows the male and female connectors to be connected by simply inserting the male connector into the female connector. When the male and female connectors are disassembled, the outer sleeve is slid towards the female connector. This facilitates quick connection and disassembly of the male and female connectors. When the flow rate of the fluid transported in the pipeline and the pressure inside the pipeline change, the sealing effect can be adaptively adjusted according to the different internal pressure and fluid flow rate of the pipeline. This avoids leakage when the internal pressure or fluid flow rate changes, ensuring the sealing effect after the male and female connectors are connected.

[0004] When the aforementioned device and existing pipeline connections are in use, concrete material delivered by the wet shotcrete machine will remain inside the pipeline. Under long-term use, the solidified concrete material will not only gradually cover the inside of the pipeline, causing difficulties in conveying concrete material, but also affect the disassembly of the pipeline joints after the concrete material has solidified. Workers can only clean it by external force knocking, and the above methods will damage the pipeline joints and the pipeline conveying concrete material.

[0005] To address this issue, we propose a pipe connection device for wet shotcrete machines. Summary of the Invention

[0006] Technical problems to be solved

[0007] In view of this, and in view of the shortcomings of the prior art, the present invention provides a pipe connection joint device for a wet shotcrete machine to solve the problems mentioned in the background art.

[0008] Technical solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a wet shotcrete machine pipe connection joint device, including a discharge pipe and an extension pipe, wherein the discharge pipe and the extension pipe are coaxially arranged, and further including an installation component, a plug-in component and a cleaning component;

[0010] The mounting assembly is located outside the discharge pipe and is used to fix the position of the discharge pipe.

[0011] The mounting components include a connecting sleeve, a threaded sleeve, a limiting sleeve, a limiting spring, a driven slider, and a mounting groove;

[0012] The connecting sleeve is inserted and installed on the outer surface of the discharge pipe;

[0013] The threaded sleeve is fixedly connected to the outer surface of the connecting sleeve on the side away from the discharge pipe;

[0014] The limiting sleeve is fixedly connected to the outer surface of the connecting sleeve on the side away from the discharge pipe, and the limiting sleeve is sleeved on the outside of the threaded sleeve.

[0015] The limit spring is fitted onto the outer surface of the threaded sleeve;

[0016] The driven slider is slidably mounted on the outer surface of the threaded sleeve;

[0017] The mounting groove circumferential array is formed on the outer surface of the connecting sleeve;

[0018] The plug-in assembly restricts the position of the extension pipe. The plug-in assembly is used to cooperate with the mounting assembly to complete the fixed installation of the discharge pipe and the extension pipe.

[0019] The plug-in assembly includes a positioning sleeve and a fixing sleeve;

[0020] The positioning sleeve is inserted and installed on the outer surface of the extension pipe;

[0021] The fixing sleeve is fixedly installed on the outer surface of the positioning sleeve on the side away from the fixing sleeve;

[0022] The cleaning kit is used to clean residual impurities inside pipe joints, preventing them from becoming clogged and difficult to disassemble after long-term use.

[0023] Preferably, the plug-in assembly further includes a sealing slider, a connector, a positioning rod, and a positioning spring;

[0024] The sealing slider is fixedly installed on the surface of the positioning sleeve away from the side, and the sealing slider is sleeved on the outside of the fixed sleeve;

[0025] The connector is fixedly installed on the surface of the sealing slider away from the positioning sleeve.

[0026] The positioning pins are fixedly installed in a circumferential array inside the positioning sleeve;

[0027] The positioning spring is sleeved and installed on the outside of the positioning insert.

[0028] Preferably, along the direction of the discharge pipe toward the extension pipe, the inner diameter of the inner wall of the connecting sleeve gradually decreases, and along the direction of the extension pipe toward the discharge pipe, the inner diameter of the inner wall of the positioning sleeve gradually decreases. The discharge pipe, connecting sleeve, fixing sleeve, positioning sleeve, and discharge pipe are sequentially connected to form a conveying channel for the flow of concrete slurry.

[0029] Preferably, the threaded sleeve and the fixed sleeve are threadedly connected, and the threaded sleeve is located outside the fixed sleeve. The threaded sleeve and the limiting sleeve form a sealing cavity. The limiting spring is located inside the sealing cavity, and the driven slider is slidably connected inside the sealing cavity. One end of the limiting spring abuts against the outer surface of the driven slider, and the other end of the limiting spring abuts against the outer wall of the connecting sleeve. The depth of the groove wall of the mounting groove gradually decreases along the circumferential curve of the connecting sleeve surface.

[0030] Preferably, the sealing slider is slidably connected to the inner surface of the limiting sleeve, the connecting piece abuts against the driven slider, one end of the positioning rod passes through the positioning sleeve and extends into the interior of the mounting groove, and the end of the positioning sleeve that passes through the positioning rod abuts against the groove wall of the mounting groove.

[0031] Preferably, the cleaning assembly includes a positioning ring, a liquid injection port, a connecting pipe, a grout injection port, and a drain cavity;

[0032] The positioning ring is slidably mounted on the outer surface of the limiting sleeve;

[0033] The injection ports are equidistantly installed on the surface of half of the positioning ring. A through groove is opened inside the positioning ring, and the injection ports are connected to the through groove inside the positioning ring.

[0034] The connecting pipes are inserted and installed on both sides of the positioning ring, and the connecting pipes on both sides of the positioning ring correspond one-to-one with the corresponding injection ports.

[0035] Grouting ports are equidistantly spaced inside the connecting sleeve and the positioning sleeve;

[0036] The venting cavities are equidistantly located inside the connecting sleeve and the positioning sleeve, and are arranged to pass through the connecting sleeve and the positioning sleeve.

[0037] Preferably, the cleaning assembly also includes a positioning ring, a plug-in round rod, a sealing block, and a return spring;

[0038] The positioning ring is fixedly installed on the inner wall of the venting cavity;

[0039] The plug-in round rod is slidably installed inside the venting cavity;

[0040] The sealing block is fixedly installed on the surface of the end of the plug-in round rod away from the positioning ring;

[0041] The return spring is sleeved and installed on the outer surface of the plug-in round rod, and the two ends of the return spring are fixedly connected to the surfaces of the sealing block and the positioning ring, respectively.

[0042] Preferably, the injection port is connected to the grouting port at the corresponding location via a connecting pipe, and the grouting port is connected to the venting chamber at the corresponding location.

[0043] Preferably, the cross-section of the venting cavity is set as a trapezoid, and the diameter of the trapezoid gradually increases along the direction of the connecting sleeve surface toward the center.

[0044] Preferably, the surface of the sealing block away from the plug-in round rod is set as an inclined surface that is flush with the inclined plane of the inner wall of the connecting sleeve and the inner wall of the positioning sleeve, and multiple sealing blocks respectively seal the leakage cavities opened in the connecting sleeve and the positioning sleeve.

[0045] Compared with the prior art, the present invention provides a pipe connection joint device for a wet shotcrete machine, which has the following advantages:

[0046] By setting up connecting sleeves, threaded sleeves, positioning sleeves, and fixed sleeves, and inserting the discharge pipe and extension pipe into the connection, a pipe connector for wet shotcrete machines is formed. The threaded installation between the threaded sleeve and the fixed sleeve initially ensures a stable connection at the connector. At the same time, during the installation process, the radial extrusion force generated by the contraction of the limit spring will act in the opposite direction between the threaded sleeve and the fixed sleeve, further maintaining the tightness of the threaded lock and preventing the threaded lock from loosening due to the complex impact forces of the concrete material during transportation.

[0047] Among them, the matching of the positioning rod and the mounting groove further restricts the locking between the threaded sleeve and the fixed sleeve, avoiding threaded connection failure. In addition, the synchronous application of radial pressure inside and outside the connector can make the connector and the connected parts fit more tightly, increase friction, and thus effectively prevent the connection from loosening or displacement when subjected to vibration, impact or load change.

[0048] The inclined plane of the inner wall of the connecting sleeve and the positioning sleeve allows the concrete material to move in an accelerated and then decelerated state during transportation. That is, the concrete material is accelerated at the pipe connection by gradually decreasing the orifice, and decelerated after passing through the connection by gradually increasing the orifice. This avoids the concrete material remaining at the pipe connection after transportation and prevents the residual concrete material from solidifying inside the pipe connection.

[0049] By injecting water into the injection port and allowing it to flow out through the drain chamber, the inner wall of the pipe connection is flushed, keeping the inner wall of the pipe clean, preventing the accumulation of more stubborn stains, reducing the risk of pipe blockage caused by dirt buildup, and avoiding mixing between two types of concrete when the wet shotcrete machine is conveying another type of concrete, which would affect the quality of the concrete.

[0050] The multiple sets of drainage chambers serve as water jet nozzles. After the water is ejected, they intertwine with each other. The water then impacts the inclined planes of the connecting sleeve and the positioning sleeve, creating complex water impact directions. The impact of water from different directions generates various shear forces and frictional forces. The resultant force of these forces helps to more effectively peel off the material adhering to the pipe wall, quickly decompose it, and carry it away.

[0051] The shape of the venting cavity helps to reduce the impact of water flow on the inner wall of the venting cavity. At the same time, it cooperates with the edge of the sealing block to form a fan-shaped water flow impact surface. Meanwhile, the outlet between the sealing block and the venting cavity wall will form gaps of different sizes under the action of water flow pressure and elastic deformation force of the reset spring, thereby changing the impact force when the water is ejected, making it easier to cover the inner wall of the entire pipe joint and reduce concrete residue. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0053] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0054] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the connecting sleeve of the present invention;

[0055] Figure 4 This is a schematic cross-sectional view of the connecting sleeve of the present invention.

[0056] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B;

[0057] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the positioning sleeve of the present invention;

[0058] Figure 7 This is a schematic cross-sectional view of the positioning sleeve of the present invention.

[0059] Figure 8 This is a schematic planar cross-sectional view of the internal structure of the positioning ring of the present invention;

[0060] Figure 9 This is a schematic diagram of the internal structure of the positioning ring of the present invention.

[0061] In the diagram: 11. Discharge pipe; 12. Extension pipe;

[0062] 21. Connecting sleeve; 22. Threaded sleeve; 23. Limiting sleeve; 24. Limiting spring; 25. Driven slider; 26. Mounting groove;

[0063] 31. Positioning sleeve; 32. Fixing sleeve; 33. Sealing slider; 34. Connecting piece; 35. Positioning rod; 36. Positioning spring;

[0064] 41. Positioning ring; 42. Injection port; 43. Connecting pipe; 44. Grouting port; 45. Drainage chamber; 46. Positioning ring; 47. Insertion rod; 48. Sealing block; 49. Return spring. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] Embodiments of the present invention

[0067] Please see Figures 1 to 4 and Figures 6 to 9 A wet shotcrete machine pipe connection device includes a discharge pipe 11 and an extension pipe 12, the discharge pipe 11 and the extension pipe 12 are coaxially arranged, and also includes an installation component, a plug-in component and a cleaning component.

[0068] The mounting assembly is located outside the discharge pipe 11 and is used to fix the position of the discharge pipe 11.

[0069] The mounting components include a connecting sleeve 21, a threaded sleeve 22, a limiting sleeve 23, a limiting spring 24, a driven slider 25, and a mounting groove 26.

[0070] The connecting sleeve 21 is inserted and installed on the outer surface of the discharge pipe 11.

[0071] The threaded sleeve 22 is fixedly connected to the outer surface of the connecting sleeve 21 on the side away from the discharge pipe 11.

[0072] The limiting sleeve 23 is fixedly connected to the outer surface of the connecting sleeve 21 on the side away from the discharge pipe 11, and the limiting sleeve 23 is sleeved on the outside of the threaded sleeve 22.

[0073] The limit spring 24 is sleeved and installed on the outer surface of the threaded sleeve 22.

[0074] The driven slider 25 is slidably mounted on the outer surface of the threaded sleeve 22.

[0075] The mounting grooves 26 are arranged in a circumferential array on the outer surface of the connecting sleeve 21.

[0076] Along the direction from the discharge pipe 11 toward the extension pipe 12, the inner diameter of the inner wall of the connecting sleeve 21 gradually decreases, and along the direction from the extension pipe 12 toward the discharge pipe 11, the inner diameter of the inner wall of the positioning sleeve 31 gradually decreases. The discharge pipe 11, the connecting sleeve 21, the fixing sleeve 32, the positioning sleeve 31 and the discharge pipe 11 are connected in sequence to form a conveying channel for the flow of concrete slurry.

[0077] In an alternative embodiment, see [reference] Figure 3 and Figure 4 The discharge pipe 11 is used to connect to the output end of the wet shotcrete machine. The connecting sleeve 21 is sealed and plugged into the discharge pipe 11. The connecting sleeve 21 serves as the connector of the discharge pipe 11, extending the conveying distance of the discharge pipe 11.

[0078] In an alternative embodiment, see [reference] Figure 7 and Figure 8 The limiting sleeve 23 is used to form a conveying channel for concrete materials.

[0079] In an alternative embodiment, see [reference] Figure 7 and Figure 8 When the driven slider 25 slides on the outer surface of the threaded sleeve 22, it will compress the limiting spring 24 that is in contact with it. When the driven slider 25 loses pressure, the rebound of the limiting spring 24 will cause the driven slider 25 to return to its initial position.

[0080] In an alternative embodiment, see [reference] Figure 7 and Figure 8 Since the inclined planes inside the connecting sleeve 21 and the positioning sleeve 31 are both composed of two planes with different inclinations, when conveying concrete material, the concrete material will first accelerate through the channel with gradually decreasing diameter, and then slow down under the channel with gradually increasing diameter. This achieves the acceleration of the concrete material flow at the pipe connection and the slowing down after passing through the pipe connection, thereby avoiding excessive concrete material residue at the pipe connection.

[0081] Further embodiments

[0082] Please see Figures 1 to 4 , Figure 6 , Figure 8 and Figure 9 The wet shotcrete machine pipe connection device also includes a plug-in component, which restricts the position of the extension pipe 12. The plug-in component is used to cooperate with the installation component to complete the fixed installation of the discharge pipe 11 and the extension pipe 12.

[0083] The plug-in assembly includes a positioning sleeve 31 and a fixing sleeve 32.

[0084] The positioning sleeve 31 is inserted and installed on the outer surface of the extension pipe 12.

[0085] The fixing sleeve 32 is fixedly installed on the outer surface of the positioning sleeve 31 on the side away from the fixing sleeve 32.

[0086] The plug-in assembly also includes a sealing slider 33, a connector 34, a positioning sleeve 31, and a positioning spring 36.

[0087] The sealing slider 33 is fixedly installed on the surface of the positioning sleeve 31 away from the side, and the sealing slider 33 is sleeved on the outside of the fixed sleeve 32.

[0088] The connector 34 is fixedly installed on the surface of the sealing slider 33 away from the positioning sleeve 31.

[0089] The positioning rods 35 are fixedly installed in a circumferential array inside the positioning sleeve 31.

[0090] The positioning spring 36 is sleeved and installed on the outside of the positioning rod 35.

[0091] The threaded sleeve 22 is threadedly connected to the fixed sleeve 32, and the threaded sleeve 22 is located outside the fixed sleeve 32. The threaded sleeve 22 and the limiting sleeve 23 form a sealed cavity. The limiting spring 24 is located inside the sealed cavity, and the driven slider 25 is slidably connected inside the sealed cavity. One end of the limiting spring 24 abuts against the outer surface of the driven slider 25, and the other end of the limiting spring 24 abuts against the outer wall of the connecting sleeve 21. The depth of the groove wall of the mounting groove 26 gradually decreases along the circumferential curve of the surface of the connecting sleeve 21.

[0092] The sealing slider 33 is slidably connected to the inner surface of the limiting sleeve 23, the connecting piece 34 abuts against the driven slider 25, one end of the positioning rod 35 passes through the positioning sleeve 31 and extends into the interior of the mounting groove 26, and the end of the positioning rod 35 that passes through the positioning sleeve 31 abuts against the groove wall of the mounting groove 26.

[0093] In an alternative embodiment, see [reference] Figure 7 and Figure 8 The positioning sleeve 31 is used to fix the position of the extension pipe 12 and cooperates with the connecting sleeve 21 to fix the discharge pipe 11 and the extension pipe 12 together.

[0094] In an alternative embodiment, see [reference] Figure 7 and Figure 8 When installing the connecting sleeve 21 and the positioning sleeve 31, after aligning the connecting sleeve 21 and the positioning sleeve 31, rotate them in opposite directions. At this time, the threaded sleeve 22 and the limiting sleeve 23 fixedly connected to the connecting sleeve 21 and the fixed sleeve 32 fixedly connected to the positioning sleeve 31 will rotate synchronously in opposite directions.

[0095] Due to the threaded connection between the threaded sleeve 22 and the fixed sleeve 32, as the connecting sleeve 21 and the positioning sleeve 31 approach each other, the threaded sleeve 22 and the fixed sleeve 32 will be threadedly fitted and gradually tightened. During the above process, the sealing slider 33 fixedly connected to the positioning sleeve 31 will move on the outer surface of the threaded sleeve 22. Specifically, the sealing slider 33 and the connecting piece 34 will gradually move closer to the position of the driven slider 25.

[0096] As the connecting piece 34 comes into contact with the driven slider 25, the driven slider 25 is gradually subjected to compressive force, which in turn compresses the limiting spring 24 in contact with it.

[0097] It should be noted that in the above process, the threaded locking between the threaded sleeve 22 and the fixed sleeve 32, and the radial pushing force applied to the connecting sleeve 21 and the positioning sleeve 31 by the driven slider 25 and the connecting piece 34 after the limit spring 24 is compressed, achieve bidirectional locking and avoid the failure of locking at the connection between the discharge pipe 11 and the extension pipe 12.

[0098] In an alternative embodiment, see [reference] Figure 1 , Figure 2 and Figure 3 The spiral installation between the connecting sleeve 21 and the positioning sleeve 31 will cause the positioning rod 35 to gradually move towards the connecting sleeve 21 and gradually come into contact with the connecting sleeve 21.

[0099] It should be noted that during the above process, one end of the positioning rod 35 will pass through the positioning ring 41 and move towards the mounting groove 26 until the threaded sleeve 22 and the fixed sleeve 32 are threadedly installed. The end of the positioning rod 35 away from the positioning sleeve 31 will be located inside the mounting groove 26 and abut against the groove wall of the mounting groove 26. At the same time, the positioning spring 36 set between the positioning sleeve 31 and the positioning ring 41 will be compressed.

[0100] Since the depth of the groove wall of the installation groove 26 gradually decreases along the circumferential curve of the surface of the connecting sleeve 21, when the connecting sleeve 21 and the positioning sleeve 31 are locked, the positioning rod 35 is located at the deepest part of the groove wall of the installation groove 26. This further avoids the situation where the installation of the connecting sleeve 21 and the positioning sleeve 31 is affected by the impact of concrete material and rotates in the opposite direction, resulting in the failure of the thread locking.

[0101] In an alternative embodiment, see [reference] Figure 1 and Figure 2 The mounting groove 26 is used to limit the position of the positioning rod 35 and prevent the positioning rod 35 and the positioning sleeve 31 from rotating independently relative to the connecting sleeve 21.

[0102] Further embodiments

[0103] Please see Figures 1 to 9 The wet shotcrete machine pipe connection device also includes a cleaning component, which is used to clean residual impurities inside the pipe connection to prevent the pipe connection from becoming clogged and difficult to disassemble after long-term use.

[0104] The cleaning assembly includes a positioning ring 41, an injection port 42, a connecting pipe 43, a grouting port 44, and a draining chamber 45.

[0105] The positioning ring 41 is slidably mounted on the outer surface of the limiting sleeve 23.

[0106] The injection port 42 is equidistantly installed on the surface of half of the positioning ring 41. The positioning ring 41 has a through groove inside, and the injection port 42 is connected to the through groove inside the positioning ring 41.

[0107] The connecting pipes 43 are inserted and installed on both sides of the positioning ring 41, and the connecting pipes 43 on both sides of the positioning ring 41 correspond one-to-one with the injection ports 42 at the corresponding positions.

[0108] Grouting ports 44 are equidistantly provided inside the connecting sleeve 21 and the positioning sleeve 31.

[0109] The venting cavities 45 are equidistantly opened inside the connecting sleeve 21 and the positioning sleeve 31, and the venting cavities 45 are arranged to pass through the connecting sleeve 21 and the positioning sleeve 31.

[0110] The cleaning assembly also includes a positioning ring 46, a plug-in round rod 47, a sealing block 48, and a return spring 49.

[0111] The positioning ring 46 is fixedly installed on the inner wall of the venting cavity 45.

[0112] The insertable round rod 47 is slidably installed inside the venting cavity 45.

[0113] The sealing block 48 is fixedly installed on the surface of the plug-in round rod 47 at the end away from the positioning ring 46.

[0114] The reset spring 49 is sleeved and installed on the outer surface of the plug-in round rod 47, and the two ends of the reset spring 49 are fixedly connected to the surfaces of the sealing block 48 and the positioning ring 46, respectively.

[0115] The injection port 42 is connected to the grouting port 44 at the corresponding position via the connecting pipe 43, and the grouting port 44 is connected to the venting chamber 45 at the corresponding position.

[0116] The cross-section of the venting cavity 45 is trapezoidal, and the diameter of the trapezoid gradually increases along the direction of the connecting sleeve 21 towards the center.

[0117] Among them, the surface of the sealing block 48 away from the plug-in round rod 47 is set as an inclined surface that is flush with the inclined plane of the inner wall of the connecting sleeve 21 and the inner wall of the positioning sleeve 31. Multiple sealing blocks 48 respectively seal the leakage cavity 45 opened in the connecting sleeve 21 and the positioning sleeve 31.

[0118] In an alternative embodiment, see [reference] Figure 7 , Figure 8 and Figure 9 During the installation of the connecting sleeve 21 and the positioning sleeve 31, since the positioning ring 41 is rotatably connected to the outer surface of the limiting sleeve 23, when the positioning rod 35 is inserted into the inside of the positioning ring 41, the positioning ring 41 will rotate synchronously with the positioning rod 35 until the threaded sleeve 22 and the fixed sleeve 32 are threadedly installed.

[0119] In an alternative embodiment, see [reference] Figure 7 , Figure 8 and Figure 9 As the connecting sleeve 21 and the positioning sleeve 31 approach each other, the connecting pipe 43 will gradually connect the inside of the positioning ring 41 and the grouting ports 44 respectively opened inside the connecting sleeve 21 and the positioning sleeve 31, so that the liquid injection port 42, the inside of the positioning ring 41, the connecting pipe 43, the grouting port 44 and the inside of the drain cavity 45 are in a connected state.

[0120] In an alternative embodiment, see [reference] Figure 5 and Figure 9 After use, that is, after the concrete material is transported through the discharge pipe 11 and the extension pipe 12, water is injected into the positioning ring 41 through the injection port 42, so that the water fills the injection port 42, the inside of the positioning ring 41, the connecting pipe 43, the grouting port 44 and the drainage chamber 45. As the water is continuously injected, the sealing block 48 located inside the drainage chamber 45 will gradually move under pressure.

[0121] Specifically, the blocking block 48 gradually moves towards the center of the discharge pipe 11 inside the discharge chamber 45, thereby opening the discharge chamber 45 which was originally sealed by the blocking block 48. At this time, the water flow will enter the concrete material conveying channel composed of the discharge pipe 11, the connecting sleeve 21, the positioning sleeve 31 and the extension pipe 12 through the discharge chamber 45.

[0122] In an alternative embodiment, see [reference] Figure 5 , Figure 8 and Figure 9 Since the inner walls of both the connecting sleeve 21 and the fixed sleeve 32 are set as inclined planes, the water flow impact direction will impact the inclined plane. At this time, most of the water flow will change its impact direction by passing through the inclined plane.

[0123] It should be noted that, referring to Figure 8 The inclined plane inside the connecting sleeve 21 and the positioning sleeve 31 is composed of two planes with different inclinations. Therefore, the impact direction of the water flow will exhibit a complex motion state under the impact of the inclined plane.

[0124] Meanwhile, since the above-mentioned drainage chambers 45 are equidistantly arranged in the upper half of the connecting sleeve 21 and the positioning sleeve 31, the water flow impacting in the multiple drainage chambers 45 will affect each other, thereby making the water flow impact cover the inside of the discharge pipe 11, connecting sleeve 21, threaded sleeve 22, positioning sleeve 31, fixed sleeve 32 and extension pipe 12 as much as possible, and washing and cleaning the concrete material remaining in the channel.

[0125] In an alternative embodiment, see [reference] Figure 5 The inner diameter of the grouting port 44 is larger than the inner diameter of the top of the discharge cavity 45. The discharge cavity 45 is trapezoidal in shape, and its size is larger as it gets closer to the center of the discharge pipe 11. That is, when the water flows into the discharge cavity 45 through the grouting port 44, it will be initially accelerated and then flow out through the channel with increasingly larger diameter, increasing the flow rate while reducing the impact of excessively high flow velocity on the cavity wall of the discharge cavity 45.

[0126] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0127] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe connection device for a wet shotcrete machine, comprising a discharge pipe (11) and an extension pipe (12), wherein the discharge pipe (11) and the extension pipe (12) are coaxially arranged, characterized in that: It also includes installation components, connector components, and cleaning components; The mounting assembly is located outside the discharge pipe (11) and is used to fix the position of the discharge pipe (11); The mounting components include a connecting sleeve (21), a threaded sleeve (22), a limiting sleeve (23), a limiting spring (24), a driven slider (25), and a mounting groove (26). The connecting sleeve (21) is inserted and installed on the outer surface of the discharge pipe (11); The threaded sleeve (22) is fixedly connected to the outer surface of the connecting sleeve (21) on the side away from the discharge pipe (11); The limiting sleeve (23) is fixedly connected to the outer surface of the connecting sleeve (21) on the side away from the discharge pipe (11), and the limiting sleeve (23) is sleeved on the outside of the threaded sleeve (22); The limiting spring (24) is sleeved and installed on the outer surface of the threaded sleeve (22); The driven slider (25) is slidably mounted on the outer surface of the threaded sleeve (22); The mounting grooves (26) are arranged in a circumferential array on the outer surface of the connecting sleeve (21); The plug-in assembly restricts the position of the extension pipe (12). The plug-in assembly is used to cooperate with the installation assembly to complete the fixed installation of the discharge pipe (11) and the extension pipe (12); The plug-in assembly includes a positioning sleeve (31) and a fixing sleeve (32); The positioning sleeve (31) is inserted and installed on the outer surface of the extension pipe (12); The fixing sleeve (32) is fixedly installed on the side of the positioning sleeve (31) facing the connecting sleeve (21); The cleaning component is used to clean residual impurities inside pipe joints, preventing the pipe joints from becoming clogged and difficult to disassemble after long-term use; The cleaning assembly includes a positioning ring (41), an injection port (42), a connecting pipe (43), a grouting port (44), and a draining chamber (45). The positioning ring (41) is slidably mounted on the outer surface of the limiting sleeve (23); The injection ports (42) are equidistantly installed on the outer surface of the upper half of the positioning ring (41). The positioning ring (41) has a through groove inside, and the injection ports (42) are connected to the through groove inside the positioning ring (41). The connecting pipes (43) are inserted and installed on both sides of the positioning ring (41), and the connecting pipes (43) on both sides of the positioning ring (41) correspond one-to-one with the injection ports (42) at the corresponding positions; Grouting ports (44) are equally spaced inside the connecting sleeve (21) and the positioning sleeve (31); The venting chambers (45) are equidistantly opened inside the connecting sleeve (21) and the positioning sleeve (31), and the venting chambers (45) are arranged to pass through the connecting sleeve (21) and the positioning sleeve (31); The injection port (42) is connected to the grouting port (44) at the corresponding position through the connecting pipe (43), and the grouting port (44) is connected to the venting chamber (45) at the corresponding position.

2. The wet shotcrete machine pipe connection joint device according to claim 1, characterized in that: The plug-in assembly also includes a sealing slider (33), a connector (34), a positioning rod (35), and a positioning spring (36); The sealing slider (33) is fixedly installed on the outer surface of the positioning sleeve (31) near the connecting sleeve (21), and the sealing slider (33) is sleeved on the outside of the fixed sleeve (32); The connector (34) is fixedly installed on the surface of the sealing slider (33) away from the positioning sleeve (31); The positioning rods (35) are fixedly installed in a circumferential array inside the positioning sleeve (31); The positioning spring (36) is sleeved and installed on the outside of the positioning plug (35).

3. The wet shotcrete machine pipe connection joint device according to claim 1, characterized in that: Along the direction of the discharge pipe (11) toward the extension pipe (12), the inner diameter of the inner wall of the connecting sleeve (21) gradually decreases, and along the direction of the extension pipe (12) toward the discharge pipe (11), the inner diameter of the inner wall of the positioning sleeve (31) gradually decreases. The discharge pipe (11), the connecting sleeve (21), the fixing sleeve (32), the positioning sleeve (31) and the extension pipe (12) are connected in sequence to form a conveying channel for the flow of concrete slurry.

4. The pipe connection joint device for a wet shotcrete machine according to claim 1, characterized in that: The threaded sleeve (22) is threadedly connected to the fixed sleeve (32), and the threaded sleeve (22) is located outside the fixed sleeve (32). The threaded sleeve (22) and the limiting sleeve (23) form a sealing cavity. The limiting spring (24) is located inside the sealing cavity, and the driven slider (25) is slidably connected inside the sealing cavity. One end of the limiting spring (24) abuts against the outer surface of the driven slider (25), and the other end of the limiting spring (24) abuts against the outer wall of the connecting sleeve (21). The depth of the groove wall of the mounting groove (26) gradually decreases along the circumferential curve of the surface of the connecting sleeve (21).

5. The pipe connection joint device for a wet shotcrete machine according to claim 2, characterized in that: The sealing slider (33) is sealed and slidably connected to the inner surface of the limiting sleeve (23). The connecting piece (34) abuts against the driven slider (25). One end of the positioning rod (35) passes through the positioning sleeve (31) and extends into the interior of the mounting groove (26). One end of the positioning rod (35) that passes through the positioning sleeve (31) abuts against the groove wall of the mounting groove (26).

6. The pipe connection joint device for a wet shotcrete machine according to claim 1, characterized in that: The cleaning assembly also includes a positioning ring (46), a plug-in round rod (47), a sealing block (48), and a return spring (49). The positioning ring (46) is fixedly installed on the inner wall of the venting cavity (45); The plug-in round rod (47) is slidably installed inside the venting cavity (45); The sealing block (48) is fixedly installed on the surface of the end of the plug-in round rod (47) away from the positioning ring (46); The reset spring (49) is sleeved and installed on the outer surface of the plug-in round rod (47), and the two ends of the reset spring (49) are fixedly connected to the surfaces of the sealing block (48) and the positioning ring (46), respectively.

7. The pipe connection joint device for a wet shotcrete machine according to claim 1, characterized in that: The vertical cross-section of the venting cavity (45) is set as a trapezoid, and the cross-sectional area of ​​the venting cavity (45) gradually increases along the direction of the connecting sleeve (21) surface toward the center.

8. The wet shotcrete machine pipe connection joint device according to claim 6, characterized in that: The surface of the sealing block (48) away from the plug-in round rod (47) is set as an inclined surface that is flush with the inclined plane of the inner wall of the connecting sleeve (21) and the inner wall of the positioning sleeve (31). Multiple sealing blocks (48) respectively seal the drainage cavity (45) opened in the connecting sleeve (21) and the positioning sleeve (31).

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