Mechanical paint pressure regulator

Abstract

The utility model relates to the technical field of coating conveying, and discloses a mechanical coating pressure regulator which comprises an inlet pipe, the top of the outer wall of the inlet pipe is in threaded connection with an adjusting screw pipe, the inner wall of the adjusting screw pipe is fixedly connected with a limiting ring, and the top of the limiting ring is fixedly connected with a tension spring. The top of the tension spring is fixedly connected with a blocking ball, the top of the adjusting screw pipe communicates with a bottom cylinder, the top of the bottom cylinder is provided with a top cover cylinder, and the top of the top cover cylinder is provided with a plurality of fixing screws. According to the pressure adjusting device, the adjusting screw pipe enters the partition ring of the bottom cylinder, the adjusting screw enables the extrusion disc to slide in the shell, the spring is extruded, the limiting disc and the limiting chuck are clamped, when the pressure of the coating exceeds the elastic potential energy of the spring, the limiting chuck ascends, the coating flows out of the right side of the chuck and enters the connecting port, and pressure adjusting is achieved.

Description

Technical Field

[0001] This utility model relates to the field of paint delivery technology, and in particular to a mechanical paint pressure regulator. Background Technology

[0002] Mechanical paint pressure regulators are key equipment for ensuring stable paint supply and precise spraying. Traditional mechanical paint pressure regulators typically consist of multiple components. Their main working principle is to balance paint pressure by adjusting the pressure of an internal spring, thereby controlling the paint pressure and flow rate. However, existing mechanical paint pressure regulators have some shortcomings, such as limited adjustment accuracy, making it difficult to meet the requirements of high-precision spraying processes; slow pressure adjustment speed, affecting work efficiency; insufficient sealing performance, making paint leakage a common problem; and an overall structure that is not compact enough, making installation and maintenance inconvenient, and unable to adapt well to complex and changing working environments and diverse paint characteristics.

[0003] A search revealed Chinese Patent Publication No. CN118162303A, which discloses a high-precision paint pressure regulator. The regulator includes a housing containing an air chamber and a paint chamber. The housing has a paint inlet, a paint outlet, and an air passage, with the air passage connected to the air chamber. The paint inlet and paint outlet are respectively connected to the paint chamber. A diaphragm assembly is disposed within the housing, separating the air chamber from the paint chamber. A pressure regulating component is located at the paint inlet, adjusting the air intake of the air passage to change the pressure within the air chamber, driving the diaphragm assembly to deform and seal against the paint inlet. This invention solves the problem of pressure regulator accuracy being affected by spring force fluctuations. Through closed-loop control, a pressure sensor provides feedback and adjusts the control air pressure for compensation, achieving dynamic calibration. However, in practical use, its complex and precise internal structure requires specialized maintenance personnel for repair and repair, making replacement of other components inconvenient. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a mechanical coating pressure regulator, which aims to improve the problem that the complex and precise internal structure of the existing technology requires professional maintenance personnel to perform repairs and maintenance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a mechanical coating pressure regulator, comprising an inlet pipe, an adjusting screw tube threadedly connected to the top of the outer wall of the inlet pipe, a limit ring fixedly connected to the inner wall of the adjusting screw tube, a tension spring fixedly connected to the top of the limit ring, a blocking ball fixedly connected to the top of the tension spring, a bottom cylinder connected to the top of the adjusting screw tube, a top cover cylinder provided at the top of the bottom cylinder, and a plurality of fixing screws provided at the top of the top cover cylinder, the outer wall of the fixing screws penetrating the top cover cylinder and connected to the bottom cylinder screws. Next, a waterproof membrane is fixedly connected to the bottom of the top cover cylinder, a dividing ring is fixedly connected to the middle of the inner wall of the bottom cylinder, an outer shell is fixedly connected to the top of the outer wall of the top cover cylinder, an adjusting screw is rotatably connected to the top of the outer shell, a pressing disc is threaded through the outer wall of the adjusting screw and threaded to the bottom of the outer shell, a pressing spring is fixedly connected to the outer wall of the pressing disc, a limiting disc is fixedly connected to the bottom of the outer wall of the pressing spring, a compression spring is fixedly connected to the bottom of the inner wall of the limiting disc, a pressure limiting component is provided at the bottom of the compression spring, and a scraping mechanism is provided on the inner wall of the inlet pipe.

[0006] Through the above technical solution: the coating enters the inlet pipe, then enters the dividing ring in the bottom cylinder through the adjusting screw. By rotating the adjusting screw, the extrusion plate slides in the outer shell, which in turn squeezes the extrusion spring, thus making the limiting disc and the limiting chuck firmly engaged. When the pressure of the coating in the dividing ring is greater than the elastic potential energy of the extrusion spring, the limiting chuck is lifted and moved to the top. At this time, the coating flows out through the right side of the limiting chuck and enters the connection port on the right side under the restriction of the partition, thus completing the pressure regulation of the coating.

[0007] As a further description of the above technical solution:

[0008] The scraping mechanism includes a filter disc, which is disposed at the bottom of the inner wall of the inlet pipe. A limiting groove is formed at the bottom of the inner wall of the inlet pipe, and the filter disc engages with the limiting groove. A rotating ring is rotatably connected to the middle of the inner wall of the inlet pipe. Multiple inclined plates are fixedly connected to the inner wall of the rotating ring, and a threaded scraper is fixedly connected to the top of the rotating ring.

[0009] Through the above technical solution: when the coating flows through the inlet pipe, it will first be pre-filtered by the filter disc. Under the restriction of the limiting groove, the filter disc can be easily installed in the inlet pipe. At the same time, under the flow of the coating and the guidance of the inclined plate, the rotating ring rotates in the inlet pipe, which in turn drives the threaded scraper to scrape the inner wall of the inlet pipe, preventing the coating from sticking to the inner wall of the inlet pipe due to the cessation of flow, thus ensuring the smooth flow of the inlet pipe.

[0010] As a further description of the above technical solution:

[0011] The pressure limiting component includes a sliding blocking disc, which is fixedly connected to the bottom of the compression spring. A limit chuck is slidably connected to the outer wall of the sliding blocking disc, and a limit strip is fixedly connected to the inner wall of the limit chuck. The sliding blocking disc is slidably connected to the limit strip, and the left and right sides of the outer wall of the bottom cylinder are connected to connection ports.

[0012] The above technical solution allows the sliding blocking disc to slide on the inner wall of the limiting chuck, thereby removing the obstruction to the top of the inner wall of the bottom cylinder. When the sliding blocking disc is opened, the paint enters the interior of the dividing ring and then flows out through the right side of the sliding blocking disc. Under the restriction of the partition, the paint flows out through the right connection port. At the same time, the partition can slide above in the groove.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the sliding blocking disc is provided with multiple sliding grooves, which are slidably connected to the limiting chuck. The inner wall of the outer shell is fixedly connected to the left and right sides, and the outer wall is provided with limiting grooves, which are slidably connected to the corresponding limiting triangular strips.

[0015] The above technical solution allows the sliding blocking disc to slide smoothly via the groove.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the bottom cylinder is fixedly connected to multiple connecting blocks, and each of the multiple connecting blocks is threadedly connected to the corresponding fixing screw.

[0018] The above technical solution facilitates the fixing of screws by using a connecting block.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the connection port on the right is threaded with a rotating interface. The left side of the outer wall of the rotating interface is connected to a connecting pipe. A pressure gauge is fixedly connected to the top of the connecting pipe, and an adjustment knob is rotatably connected to the top of the pressure gauge.

[0021] The above technical solution allows for easy connection of the interface by rotating the port, connection of the pressure gauge via the connecting pipe, and adjustment of the pressure gauge to zero by adjusting the knob.

[0022] As a further description of the above technical solution:

[0023] The bottom cylinder is the same size as the top cover cylinder, and the bottom cylinder and the outer wall of the dividing ring are rounded.

[0024] The above technical solutions help to achieve a tighter and more precise fit during assembly, ensure the stability of the connection between components, and reduce stress concentration points through smoothing.

[0025] As a further description of the above technical solution:

[0026] The outer wall size of the dividing ring is the same as the inner wall size of the limiting chuck, and the inner wall size of the limiting chuck is smaller than the outer wall size of the limiting disc.

[0027] The above technical solution enables the dividing ring to be accurately installed in the limiting chuck, thereby restricting the axial position of the dividing ring and preventing excessive axial movement of the dividing ring.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the coating enters the equipment through the inlet pipe, and enters the dividing ring of the bottom cylinder through the adjusting screw. The adjusting screw makes the extrusion plate slide inside the housing, compressing the spring and causing the limiting disc to engage with the limiting chuck. When the coating pressure exceeds the elastic potential energy of the spring, the limiting chuck rises, and the coating flows out from the right side of the chuck and enters the connection port, thus realizing pressure regulation.

[0030] 2. In this utility model, when the paint enters the pipe, it first passes through the filter disc. The limiting groove helps to install the filter disc, and under the guidance of the inclined plate, the rotating ring rotates accordingly, driving the threaded scraper to scrape the inner wall of the pipe, preventing the paint from sticking and ensuring smooth flow of the pipe. Attached Figure Description

[0031] Figure 1 This is a perspective view of a mechanical coating pressure regulator proposed in this utility model;

[0032] Figure 2 This is a front view of a mechanical coating pressure regulator proposed in this utility model;

[0033] Figure 3 This is a top view of a mechanical coating pressure regulator proposed in this utility model;

[0034] Figure 4 This is a split view of the bottom cylinder of a mechanical coating pressure regulator proposed in this utility model;

[0035] Figure 5 This is a split view of the extrusion disc of a mechanical coating pressure regulator proposed in this utility model;

[0036] Figure 6 This is a cross-sectional view of the housing of a mechanical coating pressure regulator proposed in this utility model;

[0037] Figure 7 for Figure 6 Enlarged view of point A.

[0038] Legend:

[0039] 1. Inlet pipe; 2. Scraping mechanism; 201. Filter disc; 202. Limiting groove; 203. Rotating ring; 204. Inclined plate; 205. Threaded scraper; 3. Adjusting screw; 4. Limiting ring; 5. Tension spring; 6. Blocking ball; 7. Bottom cylinder; 8. Dividing ring; 9. Top cover cylinder; 10. Fixing screw; 11. Outer shell; 12. Adjusting screw; 13. Extrusion disc; 14. Extrusion spring; 15. Limiting disc; 16. Compression spring; 17. Limiting chuck; 18. Limiting strip; 19. Sliding blocking disc; 20. Connection port; 21. Limiting groove; 22. Limiting triangular strip; 23. Slide groove; 24. Connecting block; 25. Rotating interface; 26. Connecting pipe; 27. Pressure gauge; 28. Adjusting knob; 29. ​​Waterproof membrane. Detailed Implementation

[0040] 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.

[0041] Reference Figure 4 , Figure 5 and Figure 6This utility model provides an embodiment of a mechanical paint pressure regulator, comprising an inlet pipe 1, an adjusting screw tube 3 threadedly connected to the top of the outer wall of the inlet pipe 1, a limit ring 4 fixedly connected to the inner wall of the adjusting screw tube 3, a tension spring 5 fixedly connected to the top of the limit ring 4, a blocking ball 6 fixedly connected to the top of the tension spring 5, a bottom cylinder 7 connected to the top of the adjusting screw tube 3, a top cover 9 provided at the top of the bottom cylinder 7, a plurality of fixing screws 10 provided at the top of the top cover 9, the outer wall of the fixing screws 10 penetrating the top cover 9 and screwed to the bottom cylinder 7, a waterproof membrane 29 fixedly connected to the bottom of the top cover 9, a dividing ring 8 fixedly connected to the middle of the inner wall of the bottom cylinder 7, a shell 11 fixedly connected to the top of the outer wall of the top cover 9, an adjusting screw 12 rotatably connected to the top of the shell 11, a pressing disc 13 threadedly connected to the bottom of the outer wall of the adjusting screw 12 penetrating the shell 11, and a pressing spring 14 fixedly connected to the outer wall of the pressing disc 13. A limiting disc 15 is fixedly connected to the bottom of the outer wall of the 14. A compression spring 16 is fixedly connected to the bottom of the inner wall of the limiting disc 15. A pressure limiting component is provided at the bottom of the compression spring 16. A scraping mechanism 2 is provided on the inner wall of the inlet pipe 1. The pressure limiting component includes a sliding blocking disc 19, which is fixedly connected to the bottom of the compression spring 16. A limiting chuck 17 is slidably connected to the outer wall of the sliding blocking disc 19. By rotating the adjusting screw 12, the extrusion disc 13 slides in the outer shell 11, thereby extruding the extrusion disc 13 and the extrusion spring 14, so that the limiting disc 15 and the limiting chuck 17 are firmly engaged. A limiting strip 18 is fixedly connected to the inner wall of the limiting chuck 17. The sliding blocking disc 19 is slidably connected to the limiting strip 18. The left and right sides of the outer wall of the bottom cylinder 7 are connected to the connection port 20. The limiting chuck 17 is lifted and moved to the top. At this time, the paint will flow out through the right side of the limiting chuck 17 and enter the right connection port 20, thereby completing the pressure adjustment of the paint.

[0042] Specifically, the paint enters the connector 1, then through the adjusting screw 3 into the dividing ring 8 in the bottom cylinder 7. By rotating the adjusting screw 12, the extrusion disc 13 slides in the outer shell 11, causing the extrusion disc 13 to compress the extrusion spring 14. This causes the limiting disc 15 to firmly engage with the limiting chuck 17 until the pressure of the paint in the dividing ring 8 exceeds the elastic potential energy of the extrusion spring 14, thus lifting the limiting chuck 17 to move upwards. At this point, the paint flows out through the right side of the limiting chuck 17 and, under the restriction of the partition 21, enters the right-side connection port 20, thereby completing the pressure regulation of the paint.

[0043] Reference Figure 7The scraping mechanism 2 includes a filter disc 201, which is disposed at the bottom of the inner wall of the inlet pipe 1. A limiting groove 202 is provided at the bottom of the inner wall of the inlet pipe 1. The filter disc 201 performs preliminary filtration. Under the restriction of the limiting groove 202, the filter disc 201 can be easily installed in the inlet pipe 1. The filter disc 201 and the limiting groove 202 are engaged. A rotating ring 203 is rotatably connected to the middle of the inner wall of the inlet pipe 1. Multiple inclined plates 204 are fixedly connected to the inner wall of the rotating ring 203. A threaded scraper 205 is fixedly connected to the top of the rotating ring 203. Under the guidance of the inclined plates 204, the rotating ring 203 rotates in the inlet pipe 1, thereby driving the threaded scraper 205 to scrape the inner wall of the inlet pipe 1.

[0044] Specifically, when the paint flows into the inlet pipe 1, it will first be pre-filtered by the filter disc 201. Under the restriction of the limiting groove 202, the filter disc 201 can be easily installed in the inlet pipe 1. At the same time, under the flow of the paint and the guidance of the inclined plate 204, the rotating ring 203 rotates in the inlet pipe 1, which in turn drives the threaded scraper 205 to scrape the inner wall of the inlet pipe 1, preventing the paint from sticking to the inner wall of the inlet pipe 1 due to the cessation of the paint flow, thus ensuring the smooth flow of the paint into the inlet pipe 1.

[0045] Reference Figure 1 , Figure 2 and Figure 3 The outer wall of the sliding blocking disc 19 is provided with multiple sliding grooves 23, which are slidably connected to the limiting chuck 17. The sliding grooves 23 facilitate the sliding of the sliding blocking disc 19. The inner walls of the outer shell 11 are fixedly connected to the left and right sides with limiting triangular strips 22. The outer walls of the extrusion disc 13 are provided with limiting grooves 21 on the left and right sides, which are slidably connected to the corresponding limiting triangular strips 22. The mutual sliding connection between the limiting grooves 21 and the limiting triangular strips 22 can prevent rotation when adjusting the extrusion disc 13. The inner wall of the bottom cylinder 7 is fixedly connected with multiple connecting... Block 24, multiple connecting blocks 24 are threadedly connected to corresponding fixing screws 10 respectively, and the connecting blocks 24 can facilitate the fixing connection of the fixing screws 10; the outer wall of the right connecting port 20 is threadedly connected to a rotating interface 25, which can facilitate the connection of the connecting port 20; the left side of the outer wall of the rotating interface 25 is connected to a connecting pipe 26, the top of the connecting pipe 26 is fixedly connected to a pressure gauge 27, the top of the pressure gauge 27 is rotatably connected to an adjusting knob 28, the connecting pipe 26 can be connected to the pressure gauge 27, and the adjusting knob 28 can be used to adjust the pressure gauge 27 to zero;

[0046] Specifically, the sliding groove 23 facilitates the sliding of the sliding blocking disc 19, the mutual sliding connection between the limiting groove 21 and the limiting triangular strip 22 prevents rotation when adjusting the extrusion disc 13, the connecting block 24 facilitates the fixing connection of the fixing screw 10, the rotating interface 25 facilitates the connection of the connecting port 20, the connecting pipe 26 connects the pressure gauge 27, and the adjusting knob 28 can adjust the zeroing of the pressure gauge 27.

[0047] Reference Figure 4 and Figure 6 The bottom cylinder 7 is the same size as the top cover cylinder 9. The bottom cylinder 7 and the outer wall of the dividing ring 8 are rounded, which helps to achieve a tighter and more precise fit during assembly, ensuring the connection stability between the components. The rounding can reduce stress concentration points. The outer wall size of the dividing ring 8 is the same as the inner wall size of the limiting chuck 17. The inner wall size of the limiting chuck 17 is smaller than the outer wall size of the limiting disc 15. The dividing ring 8 can be accurately installed in the limiting chuck 17, which restricts the axial position of the dividing ring 8 and prevents the dividing ring 8 from moving excessively in the axial direction.

[0048] Specifically, this helps to achieve a tighter and more precise fit during assembly, ensuring the stability of the connection between the components. The smoothing process can reduce stress concentration points, allowing the dividing ring 8 to be accurately installed in the limiting chuck 17, thus restricting the axial position of the dividing ring 8 and preventing the dividing ring 8 from moving excessively in the axial direction.

[0049] Working principle: First, the paint enters through the inlet pipe 1 and flows through the adjusting screw pipe 3 to the dividing ring 8 inside the bottom cylinder 7. Then, by rotating the adjusting screw 12, the extrusion disc 13 slides inside the outer casing 11, thereby compressing the extrusion spring 14. This causes the limiting disc 15 to tightly engage with the limiting chuck 17. When the pressure of the paint in the dividing ring 8 exceeds the elastic potential energy of the extrusion spring 14, the limiting chuck 17 will be lifted and moved upward. At this time, the paint will flow out through the right side of the limiting chuck 17 and then into the connecting port 2 on the right side. In the process of the coating flow into the inlet pipe 1, the coating pressure is adjusted. The coating is initially filtered by the filter disc 201 during the process of flowing into the inlet pipe 1 through the scraping mechanism 2. Under the constraint of the limiting groove 202, the filter disc 201 is easily installed in the inlet pipe 1. As the coating flows, the guiding effect of the inclined plate 204 causes the rotating ring 203 to rotate in the inlet pipe 1, thereby driving the threaded scraper 205 to scrape the inner wall of the inlet pipe 1 to prevent the coating from adhering to the inner wall when it stops flowing, thus ensuring the unobstructed flow of the inlet pipe 1.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanical coating pressure regulator, comprising an inlet pipe (1), characterized in that: The top of the outer wall of the inlet pipe (1) is threaded with an adjusting screw tube (3). The inner wall of the adjusting screw tube (3) is fixedly connected with a limit ring (4). The top of the limit ring (4) is fixedly connected with a tension spring (5). The top of the tension spring (5) is fixedly connected with a blocking ball (6). The top of the adjusting screw tube (3) is connected to a bottom cylinder (7). The top of the bottom cylinder (7) is provided with a top cover cylinder (9). The top of the top cover cylinder (9) is provided with multiple fixing screws (10). The outer wall of the fixing screws (10) penetrates the top cover cylinder (9) and is screwed to the bottom cylinder (7). The bottom of the top cover cylinder (9) is fixedly connected with a waterproof membrane (29). A dividing ring (8) is fixedly connected to the middle of the inner wall of the cylinder (7). A shell (11) is fixedly connected to the top of the outer wall of the top cover cylinder (9). An adjusting screw (12) is rotatably connected to the top of the shell (11). The bottom of the outer wall of the adjusting screw (12) passes through the shell (11) and is threadedly connected to a pressing disc (13). A pressing spring (14) is fixedly connected to the outer wall of the pressing disc (13). A limiting disc (15) is fixedly connected to the bottom of the outer wall of the pressing spring (14). A compression spring (16) is fixedly connected to the bottom of the inner wall of the limiting disc (15). A pressure limiting component is provided at the bottom of the compression spring (16). A scraping mechanism (2) is provided on the inner wall of the inlet pipe (1).

2. The mechanical coating pressure regulator according to claim 1, characterized in that: The scraping mechanism (2) includes a filter disc (201), which is disposed at the bottom of the inner wall of the inlet pipe (1). A limiting groove (202) is provided at the bottom of the inner wall of the inlet pipe (1). The filter disc (201) engages with the limiting groove (202). A rotating ring (203) is rotatably connected to the middle of the inner wall of the inlet pipe (1). Multiple inclined plates (204) are fixedly connected to the inner wall of the rotating ring (203). A threaded scraper (205) is fixedly connected to the top of the rotating ring (203).

3. A mechanical coating pressure regulator according to claim 1, characterized in that: The pressure limiting component includes a sliding blocking disc (19), which is fixedly connected to the bottom of the compression spring (16). A limiting chuck (17) is slidably connected to the outer wall of the sliding blocking disc (19), and a limiting strip (18) is fixedly connected to the inner wall of the limiting chuck (17). The sliding blocking disc (19) is slidably connected to the limiting strip (18). The bottom cylinder (7) has connection ports (20) on both the left and right sides of its outer wall.

4. A mechanical coating pressure regulator according to claim 3, characterized in that: The outer wall of the sliding blocking disc (19) is provided with multiple sliding grooves (23), the sliding grooves (23) are slidably connected to the limiting chuck (17), the inner wall of the outer shell (11) is fixedly connected to the left and right sides of the left and right sides of the outer wall of the (13), and the outer wall of the (13) is provided with limiting grooves (21), the limiting grooves (21) are slidably connected to the corresponding limiting triangular strips (22).

5. A mechanical coating pressure regulator according to claim 1, characterized in that: The inner wall of the bottom cylinder (7) is fixedly connected with a plurality of connecting blocks (24), and the plurality of connecting blocks (24) are respectively threadedly connected to the corresponding fixing screws (10).

6. A mechanical coating pressure regulator according to claim 3, characterized in that: The outer wall of the connection port (20) on the right side is threaded with a rotating interface (25). The left side of the outer wall of the rotating interface (25) is connected to a connecting pipe (26). The top of the connecting pipe (26) is fixedly connected to a pressure gauge (27). The top of the pressure gauge (27) is rotatably connected to an adjustment knob (28).

7. A mechanical coating pressure regulator according to claim 1, characterized in that: The bottom cylinder (7) is the same size as the top cover cylinder (9), and the outer walls of the bottom cylinder (7) and the dividing ring (8) are rounded.

8. A mechanical coating pressure regulator according to claim 3, characterized in that: The outer wall size of the dividing ring (8) is the same as the inner wall size of the limiting chuck (17), and the inner wall size of the limiting chuck (17) is smaller than the outer wall size of the limiting disc (15).

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