A quick-connect structure for a mortar spraying machine spray gun

Abstract

This utility model discloses a quick-connect structure for a spray gun in a mortar spraying machine, relating to the field of mortar spraying technology. The quick-connect structure includes a spray gun body and a delivery pipe connector. One end of the spray gun body is provided with a spray gun connector, and one end of the delivery pipe connector is provided with a delivery pipe. It also includes an installation plate mounted on the spray gun connector, with symmetrically distributed limiting components installed at the bottom of the installation plate. This utility model, through the slot on the delivery pipe connector and the mutual cooperation of the limiting components on the installation plate, allows for quick replacement and installation of the spray gun body. This convenient assembly and disassembly effectively improves worker efficiency and reduces downtime during construction. Furthermore, during the installation and fixing process, the airbag and extrusion components work together to apply extrusion force at the connection between the spray gun body and the delivery pipe connector, improving the sealing effect, preventing mortar leakage, and saving costs.

Description

Technical Field

[0001] This utility model belongs to the field of mortar spraying technology, and in particular relates to a quick connection structure for a spray gun of a mortar spraying machine. Background Technology

[0002] In the construction industry, mortar spraying is a very common and crucial process. The spray gun, as the core component of a mortar spraying machine, directly affects the efficiency and convenience of construction through its connection structure with the delivery pipeline. Currently, traditional mortar spraying machine spray gun connectors generally use a threaded connection, meaning the spray gun is manually tightened to the delivery pipe. However, this traditional connection method has revealed many drawbacks in practical use.

[0003] On construction sites, especially in large-scale, high-intensity continuous operations, when spray guns need to be replaced (e.g., due to clogging, damage, or different specifications required at different construction stages), operators must use tools to loosen and tighten the threads one by one. This process is not only cumbersome but also time-consuming and labor-intensive. The difficulty of manually tightening / loosening threads is further increased, especially when wearing protective gloves or in confined spaces, significantly reducing construction efficiency, extending equipment downtime, and consequently affecting the overall project schedule. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a quick connection structure for a spray gun of a mortar spraying machine that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: a quick connection structure for a spray gun of a mortar spraying machine, including a spray gun body and a delivery pipe connector. One end of the spray gun body is provided with a spray gun connector, and one end of the delivery pipe connector is provided with a delivery pipe. It also includes: a mounting plate, which is installed on the spray gun connector, and symmetrically distributed limiting members are installed on the bottom of the mounting plate; an L-shaped slot, which is opened on the delivery pipe connector; and an airbag, which is embedded in the inner wall of the delivery pipe connector. When the spray gun body and the delivery pipe connector are inserted and installed, the limiting members and the slot cooperate with each other to fix and limit the position, and when the limiting members move, they drive the extrusion member to run and extrude the airbag.

[0006] Preferably, the limiting component includes a positioning rod fixed to the bottom of the mounting plate, the bottom of the positioning rod has a notch, a compression spring is fixed to the surface of the notch, a protrusion is fixed to the end of the compression spring, and a telescopic rod is fixed between the protrusion and the notch.

[0007] Preferably, the delivery pipe connector has an internal cavity that is connected to the slot.

[0008] Preferably, the extrusion component includes a rotating plate rotatably connected to the cavity via a pin, a T-shaped block is fixed to one side surface of the rotating plate, one end of the T-shaped block is provided with a rounded corner, and a telescopic spring is fixed to the surface of the rotating plate, with the end of the telescopic spring fixed inside the cavity.

[0009] Preferably, the protrusion is adapted to the inner diameter of one end of the slot, and one end of the protrusion is rounded.

[0010] Preferably, one end surface of the spray gun connector is provided with a groove, the width of which is adapted to the airbag.

[0011] Preferably, the surface of the airbag is coated with a wear-resistant layer, which is made of composite polyurethane coating.

[0012] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention, through the slot provided on the delivery pipe joint and the limiting component provided on the installation plate, can quickly replace and install the spray gun body, which is convenient to disassemble and install, effectively improving the work efficiency of the workers and reducing downtime during construction. At the same time, during the installation and fixing of this structure, the airbag and the extrusion component work together to apply extrusion force at the connection between the spray gun body and the delivery pipe joint, improving its sealing effect, preventing mortar leakage, and saving costs. Attached Figure Description

[0013] In the attached diagram:

[0014] Figure 1 This is an exploded view of the quick-connect structure of a spray gun for a mortar spraying machine proposed in this utility model.

[0015] Figure 2 This is a partial three-dimensional structural diagram of the spray gun connector in a quick-connect structure for a mortar spraying machine proposed in this utility model.

[0016] Figure 3 This is a partial three-dimensional structural diagram of a limiting component for a quick-connect structure of a spray gun for a mortar spraying machine, as proposed in this utility model.

[0017] Figure 4 This is a partial cross-sectional view of the delivery pipe joint in a quick-connect structure for a mortar spraying machine spray gun proposed in this utility model.

[0018] Figure 5 The present utility model proposes Figure 4 A magnified structural diagram of region A in the middle.

[0019] In the diagram: 1. Spray gun body; 101. Positioning rod; 102. Notch; 103. Compression spring; 104. Protrusion block; 105. Telescopic rod; 11. Spray gun connector; 12. Mounting plate; 13. Groove; 2. Delivery pipe connector; 21. Delivery pipe; 3. Slot; 4. Airbag; 51. Cavity; 52. Rotating plate; 53. T-block; 54. Telescopic spring. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0021] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0022] In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0023] Example 1: Refer to Figures 1-5 A quick-connect structure for a mortar spraying machine spray gun includes a spray gun body 1 and a delivery pipe connector 2. One end of the spray gun body 1 is provided with a spray gun connector 11, and one end of the delivery pipe connector 2 is provided with a delivery pipe 21. It also includes: a mounting plate 12, which is installed on the spray gun connector 11, and symmetrically distributed limiting members are installed on the bottom of the mounting plate 12; an L-shaped slot 3, which is opened on the delivery pipe connector 2; and an airbag 4, which is embedded in the inner wall of the delivery pipe connector 2. When the spray gun body 1 and the delivery pipe connector 2 are inserted and installed, the limiting members and the slot 3 cooperate with each other to fix and limit the position, and when the limiting members move, they drive the extrusion member to run and extrude the airbag 4.

[0024] In actual assembly and use, the mounting plate 12 is first coaxially fixed on the spray gun body 1. During installation, the spray gun connector 11 at one end of the spray gun body 1 is aligned with the delivery pipe connector 2. Then, the limiting piece at the bottom of the mounting plate 12 is inserted into the slot 3 on the surface of the delivery pipe connector 2. Inserting the limiting piece into the slot 3 can quickly achieve the initial fixing and limiting of the spray gun body 1 and the delivery pipe connector 2. The whole process does not require any additional tools, and the operation is simple and convenient. It can effectively shorten the time for replacing and installing the spray gun body 1, reduce the downtime of the mortar spraying machine in the construction state, and thus improve the overall work efficiency of the staff.

[0025] During the movement of the limiting component along the vertical section of slot 3, the limiting component will contact the extrusion component inside the delivery pipe connector 2 and push the extrusion component to move. Under the force of the limiting component, the extrusion component moves towards the airbag 4 and applies a compressive force to the airbag 4. After being compressed, the airbag 4 will undergo elastic deformation, and its inner wall will tightly fit the connection seam between the spray gun connector 11 and the delivery pipe connector 2. The deformation pressure of the airbag 4 forms a reliable sealing structure at the connection seam. This sealing method can effectively fill the small gaps that may exist at the connection seam, and prevent mortar from leaking from the connection seam during the delivery process. This not only reduces the waste of mortar raw materials and lowers the construction cost, but also prevents the leaked mortar from polluting the construction environment and reduces the workload of subsequent cleaning. At the same time, the elastic sealing structure of the airbag 4 can also adapt to a certain degree of vibration or temperature change, ensuring the stability of the sealing effect during long-term use and extending the service life of the entire connection structure.

[0026] When it is necessary to disassemble the spray gun body 1 for maintenance or replacement, simply press the protruding part of the other end of the slot 3 and manually pull the spray gun body 1 out along the vertical section of the slot 3. The disassembly process is also simple and quick, further improving the convenience of equipment maintenance.

[0027] Example 2: Refer to Figures 1-5 Similar to Embodiment 1, but further: the limiting component includes a positioning rod 101 fixed to the bottom of the mounting plate 12, a notch 102 is provided at the bottom of the positioning rod 101, a compression spring 103 is fixed to the surface of the notch 102, a protrusion 104 is fixed to the end of the compression spring 103, and a telescopic rod 105 is fixed between the protrusion 104 and the notch 102. The inside of the delivery pipe connector 2 is provided with a cavity 51, which is connected to the slot 3. The pressing component includes components rotatably connected to the cavity 51 by a pin. The rotating plate 52 is inside, and a T-shaped block 53 is fixed on one side surface of the rotating plate 52. One end of the T-shaped block 53 is rounded. A telescopic spring 54 is fixed on the surface of the rotating plate 52. The end of the telescopic spring 54 is fixed in the cavity 51. The protrusion 104 is adapted to the inner diameter of one end of the slot 3. One end of the protrusion 104 is rounded. A groove 13 is provided on the surface of one end of the spray gun connector 11. The width of the groove 13 is adapted to the airbag 4. The surface of the airbag 4 is coated with a wear-resistant layer, which is made of composite polyurethane coating.

[0028] The positioning rod 101 is inserted into the vertical section of the slot 3, and its diameter is matched and fits the vertical section. When the end of the positioning rod 101 is inserted into the slot 3, the protrusion 104 is pre-retracted and enters the slot 3 simultaneously. When inserted to the bottom, the protrusion 104 releases pressure through the horizontal section of the slot 3 and is exposed from the horizontal section outlet by the elastic force of the compression spring 103. This makes it convenient to install the spray gun body 1 on the delivery pipe connector 2 for fixed positioning. On the other hand, it makes it easy for the staff to manually press the protrusion 104 to retract it to the vertical section and release the limit by pulling out the spray gun body 1. The operation is convenient and quick, effectively saving maintenance and replacement time and improving work efficiency.

[0029] During installation, when the positioning rod 101 is inserted into the vertical section of the slot 3, it squeezes the rotating plate 52. The rotating plate 52 squeezes the airbag 4, causing the airbag 4 to deform. During installation, the airbag 4 fits perfectly into the groove 13 and is stuck in the groove 13. After deformation, the inner wall of the airbag 4 fits more tightly, improving its sealing effect after installation and preventing mortar from seeping out. The wear-resistant layer on the surface of the airbag 4 also increases its service life.

[0030] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A quick-connect structure for a mortar spraying machine spray gun, comprising a spray gun body (1) and a delivery pipe connector (2), wherein one end of the spray gun body (1) is provided with a spray gun connector (11), and one end of the delivery pipe connector (2) is provided with a delivery pipe (21), characterized in that, Also includes: Mounting plate (12) is mounted on spray gun connector (11), and symmetrically distributed limiting members are mounted on the bottom of mounting plate (12); An L-shaped slot (3) is provided on the delivery pipe connector (2); The airbag (4) is embedded in the inner wall of the delivery pipe connector (2). When the spray gun body (1) and the delivery pipe connector (2) are inserted and installed, the limiting part and the slot (3) cooperate to fix and limit each other. When the limiting part moves, it drives the extruder to run and extrude the airbag (4).

2. The quick-connect structure for a spray gun in a mortar spraying machine according to claim 1, characterized in that, The limiting component includes a positioning rod (101) fixed to the bottom of the mounting plate (12). The bottom of the positioning rod (101) has a notch (102). A compression spring (103) is fixed to the surface of the notch (102). A protrusion (104) is fixed to the end of the compression spring (103). A telescopic rod (105) is fixed between the protrusion (104) and the notch (102).

3. The quick-connect structure for a spray gun in a mortar spraying machine according to claim 1, characterized in that, The delivery pipe connector (2) has a cavity (51) inside, and the cavity (51) is connected to the slot (3).

4. The quick-connect structure for a spray gun in a mortar spraying machine according to claim 1, characterized in that, The extrusion component includes a rotating plate (52) rotatably connected to the cavity (51) via a pin. A T-shaped block (53) is fixed on one side surface of the rotating plate (52). One end of the T-shaped block (53) is provided with a rounded corner. A telescopic spring (54) is fixed on the surface of the rotating plate (52). The end of the telescopic spring (54) is fixed inside the cavity (51).

5. The quick-connect structure for a spray gun in a mortar spraying machine according to claim 2, characterized in that, The protrusion (104) is adapted to the inner diameter of one end of the slot (3), and one end of the protrusion (104) is rounded.

6. The quick-connect structure for a spray gun in a mortar spraying machine according to claim 1, characterized in that, The spray gun connector (11) has a groove (13) on one end surface, and the width of the groove (13) is adapted to the airbag (4).

7. The quick-connect structure for a spray gun in a mortar spraying machine according to claim 1, characterized in that, The surface of the airbag (4) is coated with a wear-resistant layer, which is made of composite polyurethane coating.

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