A user-friendly mortar spray gun

Abstract

This utility model relates to the field of engineering machinery, and in particular to a user-friendly mortar spray gun, comprising a nozzle device and a delivery pipe, wherein the nozzle device and the delivery pipe are connected to an installation pipe, the installation pipe having a mortar passage hole, and the delivery pipe having a through hole, one end of which is connected to the nozzle device, and the other end of which is connected to the through hole; the delivery pipe having an air passage, and the installation pipe having an air vent, the nozzle device having an air vent, one end of which is connected to the air passage, and the other end of which is connected to the air vent; and an installation sleeve connected to the delivery pipe, the installation sleeve having an air inlet connected to the air passage; the air inlet communicating with the air passage. This utility model provides a user-friendly mortar spray gun, solving the problem that the compressed air pipe of traditional mortar spray guns affects the spraying operation and is inconvenient to use.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery, and in particular to a mortar spray gun that is easy to use. Background Technology

[0002] In traditional construction, plastering is usually done manually. However, this is not only inefficient and labor-intensive, but also results in defects such as hollow spots on the surface of the building, which greatly limits the improvement of construction quality. In order to improve construction efficiency and satisfaction, construction sites now usually use mortar spraying machines to carry out mechanical spraying of mortar.

[0003] The reference application is 201310369607.2, entitled "Mortar Spraying Machine and Mortar Spray Gun Thereof", which includes a nozzle, a spray gun tube and a compressed air tube. The nozzle is located at one end of the spray gun tube, and the air outlet of the compressed air tube is located inside the spray gun tube. The distance between the air outlet and the nozzle outlet is adjustable. Because the distance between the compressed air outlet and the nozzle outlet is adjustable, the amount of mortar between them can vary. This allows the distance to be adjusted based on different mortar characteristics (such as water retention and consistency), ensuring more thorough mixing of the mortar with the high-pressure gas from the compressed air pipe under various conditions. This improves the atomization effect of the nozzle, resulting in more uniform mortar application and reducing subsequent smoothing work. However, this type of mortar spray gun has separate spray gun and compressed air pipes, making the overall structure less streamlined. During use, the compressed air pipe is exposed and vibrates with the shaking caused by the mortar spray gun, affecting the normal operation of the spray gun and making it inconvenient to use. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a user-friendly mortar spray gun, resolving the problems of the compressed air pipe on traditional mortar spray guns affecting spraying operations and making them inconvenient to use.

[0005] The technical solution adopted by this utility model is as follows: a convenient mortar spray gun, including a nozzle device and a delivery pipe. The nozzle device and the delivery pipe are connected to an installation pipe. A mortar passage hole is opened in the installation pipe, and a through hole is provided in the delivery pipe. One end of the mortar passage hole is connected to the nozzle device, and the other end of the mortar passage hole is connected to the through hole. The delivery pipe is provided with an air passage, and the installation pipe is also provided with an air vent. An air jet hole is provided on the nozzle device. One end of the air vent is connected to the air passage, and the other end of the air vent is connected to the air jet hole. An installation sleeve is also provided, which is connected to the delivery pipe. An air inlet hole is provided on the installation sleeve, and the air inlet hole is connected to the air passage.

[0006] With the above technical solution, the user presses mortar into the through hole of the delivery pipe, and it enters the nozzle device through the mortar passage hole in the installation pipe. Meanwhile, air flows into the air passage of the delivery pipe from the air inlet hole on the installation sleeve, and enters the air jet hole through the air outlet hole in the installation pipe, so that the mortar and air are fully mixed in the nozzle device, and then sprayed out from the nozzle device to be evenly sprayed onto the building surface that needs to be plastered. The air passage of this utility model is set on the delivery pipe, eliminating the need for an additional compressed air pipe to provide gas pipeline, making the mortar spray gun very simple and more convenient to use.

[0007] Furthermore, the conveying pipe is a straight pipe, and the installation pipe is an elbow pipe.

[0008] Through the above technical solution, the straight pipe makes the mortar flow very smoothly and can maintain a stable flow rate; the elbow pipe makes the connection between the mortar pipe and the nozzle device very convenient, and the elbow pipe can change the flow direction of the mortar, making the mortar spray gun more convenient to use.

[0009] Furthermore, the slurry passage includes a transverse section and an inclined section connected to each other, the transverse section is connected to the through hole, and the inclined section is connected to the nozzle device.

[0010] Through the above technical solution, the horizontal section and the through hole are connected, and the inclined section and the nozzle device are connected, so that the mortar can smoothly transition when it flows from the delivery pipe into the installation pipe. The horizontal section and the inclined section are connected without an arc transition, which greatly reduces energy loss and prevents the flow rate of the mortar from dropping too much after entering the inclined section. The mortar flowing into the nozzle device has smoother flow and can be sprayed out with a stronger inertial force, thus improving the spraying efficiency of the mortar spray gun.

[0011] Furthermore, the nozzle device includes a nozzle body and a fastener, the nozzle body and the fastener are snapped together, the fastener is connected to the mounting tube, the nozzle body has an output hole, the output hole is connected to the inclined section, the air jet is located on the side wall of the nozzle body, the air jet is connected to the output hole, and the fastener is provided with a clearance opening for the nozzle body to extend out.

[0012] With the above technical solution, the mortar enters the output hole of the nozzle body through the mortar passage hole, and the air flows into the jet hole through the air hole. The jet hole is located on the side wall of the nozzle body and is connected to the output hole, so that the air can enter the output hole and mix fully with the mortar, so that the sprayed mortar can be evenly sprayed onto the building surface.

[0013] Furthermore, a limiting flange is provided on the nozzle body, and a corresponding limiting tab is provided on the fastener, with the limiting flange and the limiting tab abutting against each other.

[0014] Through the above technical solution, the limiting flange and the limiting tab abut against each other, which allows the fastener to limit the nozzle body, preventing the nozzle body from coming out during use. The overall structure is more robust and also facilitates factory production and assembly.

[0015] Furthermore, a connecting sleeve for splicing multiple delivery pipes is also provided. The connecting sleeve is provided with a vent. One end of the vent is connected to a ventilation channel, and the other end of the vent is connected to another ventilation channel.

[0016] With the above technical solution, users can use the connecting sleeve to splice multiple delivery pipes and freely adjust the length of the mortar spray gun to adapt to different usage scenarios. The air vent on the connecting sleeve allows the air channels on different delivery pipes to be interconnected, ensuring smooth air intake for the mortar spray gun.

[0017] Furthermore, the connecting sleeve includes a first connecting sleeve, a second connecting sleeve, and an annular partition. The two sides of the annular partition are respectively connected to the first connecting sleeve and the second connecting sleeve. The vent is located on the annular partition. Both ends of the conveying pipe are provided with threaded portions. The mounting pipe is threadedly connected to the threaded portions. The first connecting sleeve and the threaded portion of one conveying pipe are threadedly connected. The second connecting sleeve and the threaded portion of the other conveying pipe are threadedly connected.

[0018] Through the above technical solution, the threaded connection between the first connecting cylinder and the threaded part of the conveying pipe, and the threaded connection between the second connecting cylinder and the threaded part of the other conveying pipe, makes the connection between the connecting sleeve and the conveying pipe very stable, and the mortar spray gun splicing extension is very convenient. The vent on the annular partition can ensure the normal flow of air in the ventilation channel after the mortar spray gun splicing extension is completed.

[0019] Furthermore, the first connecting cylinder is provided with a first annular groove, in which a first sealing ring is fitted; the second connecting cylinder is provided with a second annular groove, in which a second sealing ring is fitted; one side of the annular partition is provided with a first annular groove, in which a third sealing ring is fitted; the other side of the annular partition is provided with a second annular groove, in which a fourth sealing ring is fitted; the first and third sealing rings are respectively located on both sides of one end of the vent, and the second and fourth sealing rings are respectively located on both sides of the other end of the vent.

[0020] Through the above technical solution, the first sealing ring is embedded in the first annular groove, and the third sealing ring is embedded in the first annular groove, so that one end of the vent is well sealed; the second sealing ring is embedded in the second annular groove, and the fourth sealing ring is embedded in the second annular groove, so that the other end of the vent is well sealed, which greatly improves the sealing performance of the vent and prevents air leakage. 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is an exploded view of the present invention;

[0025] Figure 4 This is a cross-sectional view of the nozzle body of this utility model;

[0026] Figure 5 This is a cross-sectional view of the mounting pipe of this utility model;

[0027] Figure 6 This is a sectional view of the connecting sleeve of this utility model;

[0028] Figure 7 This is a sectional view of the mounting sleeve of this utility model;

[0029] The utility model reference information is as follows:

[0030] 1. Nozzle device; 2. Delivery pipe; 3. Mounting pipe; 4. Slurry passage hole; 401. Horizontal section; 402. Inclined section; 5. Through hole; 6. Ventilation channel; 7. Air passage hole; 8. Air jet hole; 9. Mounting sleeve; 10. Air inlet hole; 11. Nozzle body; 12. Fastener; 13. Output hole; 14. Clearance opening; 15. Limiting flange; 16. Limiting tab; 17. Connecting sleeve; 171. First connecting sleeve; 172. Second connecting sleeve; 173. Annular partition; 18. Vent; 19. Threaded part; 20. First annular groove; 21. Second annular groove; 22. First annular groove; 23. Second annular groove; 24. First sealing ring; 25. Second sealing ring; 26. Third sealing ring; 27. Fourth sealing ring;

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] See Figures 1 to 7As shown, a convenient mortar spray gun includes a nozzle device 1 and a delivery pipe 2. The nozzle device 1 and the delivery pipe 2 are connected to an installation pipe 3. A mortar passage hole 4 is provided in the installation pipe 3, and a through hole 5 is provided in the delivery pipe 2. One end of the mortar passage hole 4 is connected to the nozzle device 1, and the other end of the mortar passage hole 4 is connected to the through hole 5. The delivery pipe 2 is provided with an air passage 6, and the installation pipe 3 is also provided with an air vent 7. An air vent 8 is provided on the nozzle device 1. One end of the air vent 7 is connected to the air passage 6, and the other end of the air vent 7 is connected to the air vent 8. An installation sleeve 9 is also provided, which is connected to the delivery pipe 2. An air inlet 10 is provided on the installation sleeve 9, and the air inlet 10 is connected to the air passage 6. The user presses mortar into the through hole 5 of the delivery pipe 2, and it enters the nozzle device 1 through the mortar passage hole 4 in the installation pipe 3. Meanwhile, air flows into the air passage 6 of the delivery pipe 2 from the air inlet hole 10 on the installation sleeve 9, and enters the air jet hole 8 through the air outlet hole 7 in the installation pipe 3. This allows the mortar and air to be fully mixed in the nozzle device 1, and then sprayed out from the nozzle device 1 to be evenly sprayed onto the building surface that needs to be plastered. The air passage 6 of this utility model is set on the delivery pipe 2, eliminating the need for an additional compressed air pipe to provide gas, making the mortar spray gun very simple and more convenient to use.

[0036] See Figures 1-3 As shown, the conveying pipe 2 is a straight pipe, and the installation pipe 3 is an elbow pipe. The straightness of the conveying pipe 2 ensures that the mortar flows smoothly within it and maintains a stable flow rate; the elbow of the installation pipe 3 makes the connection between the conveying pipe 2 and the nozzle device 1 very convenient, and the elbow can change the flow direction of the mortar, making the mortar spray gun more convenient to use.

[0037] See Figure 2 , 5 As shown, the grout passage 4 includes a transverse section 401 and an inclined section 402 connected to each other. The transverse section 401 is connected to the through hole 5, and the inclined section 402 is connected to the nozzle device 1. The connection between the transverse section 401 and the through hole 5, and the connection between the inclined section 402 and the nozzle device 1, allows the mortar to flow smoothly from the delivery pipe 2 into the installation pipe 3. The absence of an arc transition between the transverse section 401 and the inclined section 402 greatly reduces energy loss, prevents the mortar flow rate from dropping too much after entering the inclined section 402, and ensures smoother mortar flow into the nozzle device 1. Furthermore, the mortar can be ejected with stronger inertial force, improving the spraying efficiency of the mortar spray gun.

[0038] See Figures 2-5As shown, the nozzle device 1 includes a nozzle body 11 and a fastener 12. The nozzle body 11 and the fastener 12 are snapped together. The fastener 12 is connected to the mounting pipe 3. An output hole 13 is provided on the nozzle body 11, which is connected to the inclined section 402. An air jet hole 8 is located on the side wall of the nozzle body 11 and is connected to the output hole 13. A clearance opening 14 is provided on the fastener 12 for the nozzle body 11 to extend out. Mortar enters the output hole 13 of the nozzle body 11 through the mortar passage hole 4. Air flows into the air jet hole 8 through the air hole 7. The air jet hole 8 is located on the side wall of the nozzle body 11 and is connected to the output hole 13, so that air can enter the output hole 13 and mix thoroughly with the mortar, allowing the sprayed mortar to be evenly sprayed onto the building surface.

[0039] See Figures 1-4 As shown, a limiting flange 15 is provided on the nozzle body 11, and a corresponding limiting tab 16 is provided on the fastener 12. The limiting flange 15 and the limiting tab 16 abut against each other. The abutment between the limiting flange 15 and the limiting tab 16 allows the fastener 12 to limit the nozzle body 11, preventing the nozzle body 11 from coming off during use. This makes the overall structure more robust and facilitates factory production and assembly.

[0040] See Figure 1 , 2 As shown in Figures 3 and 6, a connecting sleeve 17 for splicing multiple delivery pipes 2 is also provided. The connecting sleeve 17 has an air vent 18, one end of which is connected to an air passage 6, and the other end of which is connected to another air passage 6. Users can use the connecting sleeve 17 to splice multiple delivery pipes 2 to freely adjust the length of the mortar spray gun to adapt to different usage scenarios. The air vent 18 on the connecting sleeve 17 allows the air passages 6 on different delivery pipes 2 to be interconnected, ensuring smooth air intake for the mortar spray gun.

[0041] See Figure 1 , 2As shown in Figures 3 and 6, the connecting sleeve 17 includes a first connecting sleeve 171, a second connecting sleeve 172, and an annular partition 173. The two sides of the annular partition 173 are connected to the first connecting sleeve 171 and the second connecting sleeve 172, respectively. An air vent 18 is located on the annular partition 173. Both ends of the conveying pipe 2 are provided with threaded portions 19. The mounting pipe 3 is threadedly connected to the threaded portions 19. The first connecting sleeve 171 is threadedly connected to the threaded portion 19 of one conveying pipe 2, and the second connecting sleeve 172 is threadedly connected to the threaded portion 19 of the other conveying pipe 2. The threaded connection between the first connecting sleeve 171 and the threaded portion 19 of one conveying pipe 2, and the threaded connection between the second connecting sleeve 172 and the threaded portion 19 of the other conveying pipe 2, makes the connection between the connecting sleeve 17 and the conveying pipe 2 very stable, and facilitates the splicing and extension of the mortar spray gun. The air vent 18 on the annular partition 173 ensures normal airflow in the ventilation channel 6 after the mortar spray gun splicing and extension are completed.

[0042] See Figure 3 , 6 As shown, a first annular groove 20 is provided inside the first connecting cylinder 171, and a first sealing ring 24 is embedded in the first annular groove 20. A second annular groove 21 is provided inside the second connecting cylinder 172, and a second sealing ring 25 is embedded in the second annular groove 21. A first annular groove 22 is provided on one side of the annular partition 173, and a third sealing ring 26 is embedded in the first annular groove 22. A second annular groove 23 is provided on the other side of the annular partition 173, and a fourth sealing ring 27 is embedded in the second annular groove 23. The first sealing ring 24 and the third sealing ring 26 are located on both sides of one end of the vent 18, and the second sealing ring 25 and the fourth sealing ring 27 are located on both sides of the other end of the vent 18. The first sealing ring 24 is fitted into the first annular groove 20, and the third sealing ring 26 is fitted into the first annular groove 22, so that one end of the vent 18 is well sealed; the second sealing ring 25 is fitted into the second annular groove 21, and the fourth sealing ring 27 is fitted into the second annular groove 23, so that the other end of the vent 18 is well sealed, which greatly improves the sealing performance of the vent 18 and prevents air leakage.

[0043] The fastener 12 is preferably threaded to the mounting pipe 3, and the mounting sleeve 9 is threaded to the delivery pipe 2.

[0044] When using this utility model, the user presses mortar into the through hole 5 of the delivery pipe 2, which then flows into the horizontal section 401 of the mortar passage hole 4, and then into the nozzle body 11 through the inclined section 402 of the mortar passage hole 4. Meanwhile, air flows into the air passage 6 of the delivery pipe 2 from the air inlet 10 on the mounting sleeve 9, and enters the air jet hole 8 through the air outlet 7 in the mounting pipe 3. This allows the mortar and air to be fully mixed in the nozzle body 11, and then sprayed out from the nozzle body 11, evenly sprayed onto the building surface that needs plastering. This makes the mortar spray gun very simple and more convenient to use.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A mortar gun for easy use, comprising a nozzle device (1) and a delivery tube (2), characterized in that: The nozzle device (1) and the conveying pipe (2) are connected to an installation pipe (3). The installation pipe (3) has a slurry passage hole (4). The conveying pipe (2) has a through hole (5). One end of the slurry passage hole (4) is connected to the nozzle device (1), and the other end of the slurry passage hole (4) is connected to the through hole (5). The conveying pipe (2) has an air passage (6). The installation pipe (3) also has an air passage hole (7). The nozzle device (1) has an air jet hole (8). One end of the air passage hole (7) is connected to the air passage (6), and the other end of the air passage hole (7) is connected to the air jet hole (8). An installation sleeve (9) is also provided. The installation sleeve (9) is connected to the conveying pipe (2). The installation sleeve (9) has an air inlet hole (10), and the air inlet hole (10) is connected to the air passage (6).

2. A ready-to-use mortar gun according to claim 1, characterized in that: The delivery pipe (2) is a straight pipe, and the installation pipe (3) is an elbow pipe.

3. A ready-to-use mortar gun according to claim 2, characterized in that: The slurry passage (4) includes a transverse section (401) and an inclined section (402) connected to each other. The transverse section (401) is connected to the through hole (5), and the inclined section (402) is connected to the nozzle device (1).

4. A ready-to-use mortar gun according to claim 3, characterized in that: The nozzle device (1) includes a nozzle body (11) and a fastener (12). The nozzle body (11) and the fastener (12) are snapped together. The fastener (12) is connected to the mounting tube (3). The nozzle body (11) has an output hole (13) that communicates with the inclined section (402). The jet hole (8) is located on the side wall of the nozzle body (11) and communicates with the output hole (13). The fastener (12) has a clearance opening (14) for the nozzle body (11) to extend out.

5. A ready-to-use mortar gun according to claim 4, characterized in that: The nozzle body (11) is provided with a limiting flange (15), and the fastener (12) is provided with a corresponding limiting tab (16), and the limiting flange (15) and the limiting tab (16) abut against each other.

6. A user-friendly mortar gun according to claim 2 or 3 or 5, characterized in that: A connecting sleeve (17) for splicing multiple delivery pipes (2) is also provided. A vent (18) is provided inside the connecting sleeve (17). One end of the vent (18) is connected to a ventilation channel (6), and the other end of the vent (18) is connected to another ventilation channel (6).

7. A ready-to-use mortar gun according to claim 6, characterized in that: The connecting sleeve (17) includes a first connecting sleeve (171), a second connecting sleeve (172), and an annular partition (173). The two sides of the annular partition (173) are connected to the first connecting sleeve (171) and the second connecting sleeve (172) respectively. The vent (18) is located on the annular partition (173). Both ends of the conveying pipe (2) are provided with threaded portions (19). The mounting pipe (3) is threadedly connected to the threaded portions (19). The first connecting sleeve (171) is threadedly connected to the threaded portion (19) of one of the conveying pipes (2). The second connecting sleeve (172) is threadedly connected to the threaded portion (19) of the other conveying pipe (2).

8. A convenient mortar gun according to claim 7, characterized in that: The first connecting cylinder (171) is provided with a first annular groove (20), and a first sealing ring (24) is embedded in the first annular groove (20). The second connecting cylinder (172) is provided with a second annular groove (21), and a second sealing ring (25) is embedded in the second annular groove (21). One side of the annular partition (173) is provided with a first annular groove (22), and a third sealing ring (26) is embedded in the first annular groove (22). The other side of the annular partition (173) is provided with a second annular groove (23), and a fourth sealing ring (27) is embedded in the second annular groove (23). The first sealing ring (24) and the third sealing ring (26) are respectively located on both sides of one end of the vent (18), and the second sealing ring (25) and the fourth sealing ring (27) are respectively located on both sides of the other end of the vent (18).

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