Safety relief valve for water cutting of carpet

Abstract

The utility model is applicable to the technical field of pressure release valves, and provides a safety pressure release valve for carpet water cutting, which comprises a water inlet pipe, a filter pipe, a middle pipe and a water outlet pipe, the tail end of the water inlet pipe is fixedly connected with the filter pipe, the upper end of the filter pipe is fixedly connected with the middle pipe, and the side wall of the middle pipe is fixedly connected with the water outlet pipe. A top cover is fixedly connected to the upper end of the middle pipe, a filtering assembly is arranged on the inner wall of the filtering pipe in a matched mode, a blocking ring is fixedly connected to the bottom end of the inner wall of the middle pipe, a sealing piston is slidably connected to the inner wall of the middle pipe, a connecting rod is fixedly connected to the upper end of the sealing piston, and the upper end of the connecting rod penetrates through the top cover and is provided with a thrust assembly in a matched mode. The pressure relief valve has the advantages that the problem that the precision of the pressure relief valve is reduced or even fails due to the fact that the elasticity of a spring is attenuated is solved, impurities are prevented from blocking the internal structure of the middle pipe, and long-term stable operation of the pressure relief valve is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valve technology, and in particular to a safety pressure relief valve for carpet waterjet cutting. Background Technology

[0002] In the carpet processing industry, waterjet cutting technology has undoubtedly become an indispensable processing method due to its unique advantages of high precision and low damage. The pressure relief valve is a key component that maintains stable pressure inside the container and prevents overpressure from damaging the equipment or affecting the cutting effect.

[0003] Most existing safety relief valves use springs to control the opening and closing of the valve, but the spring force decays with long-term use, causing pressure deviation, which in turn leads to a decrease in the accuracy of the relief valve or even failure.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a safety pressure relief valve for carpet waterjet cutting to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a safety pressure relief valve for carpet waterjet cutting, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A safety pressure relief valve for carpet waterjet cutting includes an inlet pipe, a filter pipe, an intermediate pipe, and an outlet pipe. The filter pipe is fixedly connected to the end of the inlet pipe, the intermediate pipe is fixedly connected to the upper end of the filter pipe, the outlet pipe is fixedly connected to the side wall of the intermediate pipe, and a top cover is fixedly connected to the upper end of the intermediate pipe. A filter assembly is fitted on the inner wall of the filter pipe, a plugging ring is fixedly connected to the bottom end of the inner wall of the intermediate pipe, and a sealing piston is slidably connected to the inner wall of the intermediate pipe. A connecting rod is fixedly connected to the upper end of the sealing piston, and a thrust assembly is fitted through the top cover at the upper end of the connecting rod.

[0008] The thrust assembly includes a receiving groove, a threaded sleeve, a motor, a first gear, and a second gear. The receiving groove is provided on the top cover. The inner wall of the receiving groove is rotatably connected to the threaded sleeve through a bearing. The inner wall of the threaded sleeve is threadedly connected to the connecting rod. The upper end of the outer wall of the threaded sleeve is fixedly sleeved with the second gear. The motor is also fixedly connected to the top cover. The drive end of the motor is fixedly connected to the first gear, and the first gear and the second gear are meshed together.

[0009] It also includes a controller and a pressure sensor, the pressure sensor being fixedly mounted on the water inlet pipe, and the controller being electrically connected to the motor and the pressure sensor.

[0010] In a further technical solution, the bottom end of the plugging ring is chamfered.

[0011] A further technical solution is that a limiting groove is formed on the inner wall of the intermediate tube, a limiting rod is fixedly connected to the side wall of the connecting rod, and the limiting rod is slidably connected to the inner wall of the limiting groove.

[0012] A further technical solution includes a filter cylinder, a connecting groove, a waste discharge groove, filter holes, and a plug; the filter cylinder is fixedly connected to the inner wall of the filter tube, the connecting groove is formed on the side wall of the filter cylinder, multiple evenly distributed filter holes are formed at the upper end of the filter cylinder, the waste discharge groove is formed at the lower end of the side wall of the filter cylinder, and a plug is threadedly connected to the lower end of the side wall of the filter cylinder. In summary, the embodiments of this utility model have the following beneficial effects compared with the prior art:

[0013] 1. Water enters the filter cylinder inside the filter tube from the inlet pipe, then passes through the filter holes into the middle pipe. When the pressure sensor detects that the pressure in the inlet pipe exceeds the set value, the controller controls the motor to start. The motor then drives the first gear to rotate, and the first gear drives the threaded sleeve to rotate through the second gear. Subsequently, the threaded sleeve drives the connecting rod to rise along the inner wall of the middle pipe. Then, the connecting rod drives the sealing piston to rise, and then the water flows into the outlet pipe and is discharged. This avoids the problem of reduced accuracy or even failure of the pressure relief valve due to the decay of spring force caused by the use of springs.

[0014] 2. By using a limiting rod and a limiting groove, the filter tube restricts the connecting rod to move only along the axis of the middle tube;

[0015] 3. The filter assembly effectively filters impurities from the inlet pipe, preventing them from entering the intermediate pipe and thus avoiding blockage of the internal structure of the intermediate pipe, ensuring the long-term stable operation of the pressure relief valve.

[0016] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the three-dimensional cross-section of the middle section;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A

[0020] Figure 4 This utility model Figure 2 A three-dimensional structural diagram of the middle section.

[0021] In the diagram: 1. Inlet pipe; 2. Filter pipe; 3. Intermediate pipe; 4. Outlet pipe; 5. Filter assembly; 51. Filter cylinder; 52. Connecting groove; 53. Waste discharge groove; 54. Filter hole; 55. Plug; 6. Plug ring; 7. Connecting rod; 8. Chamfer; 9. Top cover; 10. Thrust assembly; 101. Receiving groove; 102. Threaded sleeve; 103. Motor; 104. First gear; 105. Second gear; 11. Sealing piston; 12. Limiting groove; 13. Limiting rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] like Figures 1-4 As shown in the figure, this utility model embodiment provides a safety pressure relief valve for carpet waterjet cutting, including an inlet pipe 1, a filter pipe 2, an intermediate pipe 3, and an outlet pipe 4. The filter pipe 2 is fixedly connected to the end of the inlet pipe 1, the intermediate pipe 3 is fixedly connected to the upper end of the filter pipe 2, the outlet pipe 4 is fixedly connected to the side wall of the intermediate pipe 3, and a top cover 9 is fixedly connected to the upper end of the intermediate pipe 3. A filter assembly 5 is provided on the inner wall of the filter pipe 2. The filter assembly 5 is used to filter larger impurities in the fluid in the inlet pipe 1 to prevent them from entering the intermediate pipe 3. A plugging ring 6 is fixedly connected to the bottom end of the inner wall of the intermediate pipe 3, and a sealing piston 11 is slidably connected to the inner wall of the intermediate pipe 3. A connecting rod 7 is fixedly connected to the upper end of the sealing piston 11, and a thrust assembly 10 is provided on the upper end of the connecting rod 7 through the top cover 9. The thrust assembly 10 is used to drive the connecting rod 7 to rise and fall.

[0025] Furthermore, the bottom end of the plugging ring 6 is provided with a chamfer 8.

[0026] Furthermore, such as Figure 2 and Figure 4 As shown, a limiting groove 12 is formed on the inner wall of the intermediate tube 3, and a limiting rod 13 is fixedly connected to the side wall of the connecting rod 7. The limiting rod 13 is slidably connected to the inner wall of the limiting groove 12. By means of the cooperation between the limiting rod 13 and the limiting groove 12, the filter tube 2 restricts the connecting rod 7 to move only along the axis of the intermediate tube 3.

[0027] like Figure 2 and Figure 3As shown, the thrust assembly 10 includes a receiving groove 101, a threaded sleeve 102, a motor 103, a first gear 104, and a second gear 105. The receiving groove 101 is provided on the top cover 9. The inner wall of the receiving groove 101 is rotatably connected to the threaded sleeve 102 through a bearing. The inner wall of the threaded sleeve 102 is threadedly connected to the connecting rod 7. The upper end of the outer wall of the threaded sleeve 102 is fixedly sleeved with the second gear 105. The motor 103 is also fixedly connected to the top cover 9. The drive end of the motor 103 is fixedly connected to the first gear 104, and the first gear 104 and the second gear 105 are meshed together.

[0028] Furthermore, it also includes a controller (not shown in the figure) and a pressure sensor (not shown in the figure). The pressure sensor is fixedly installed on the water inlet pipe 1 and is used to measure the internal pressure of the water inlet pipe 1. The controller is electrically connected to the motor 103 and the pressure sensor.

[0029] In a specific application, when the pressure sensor detects that the pressure in the inlet pipe 1 exceeds the set value, the controller controls the motor 103 to start. Then, the motor 103 drives the first gear 104 to rotate. After that, the first gear 104 drives the threaded sleeve 102 to rotate through the second gear 105. Subsequently, the threaded sleeve 102 drives the connecting rod 7 to rise and fall.

[0030] like Figure 1 and Figure 2 As shown, the filter assembly 5 includes a filter cylinder 51, a connecting groove 52, a waste discharge groove 53, filter holes 54, and a plug 55; the filter cylinder 51 is fixedly connected to the inner wall of the filter tube 2, the connecting groove 52 is opened on the side wall of the filter cylinder 51, a plurality of evenly distributed filter holes 54 are opened at the upper end of the filter cylinder 51, the waste discharge groove 53 is opened at the lower end of the side wall of the filter cylinder 51, and the plug 55 is threadedly connected to the lower end of the side wall of the filter cylinder 51.

[0031] In practical applications, water flows into the filter cylinder 51 and then enters the intermediate pipe 3 through the filter hole 54. Impurities are intercepted inside the filter cylinder 51. When it is necessary to clean the accumulated impurities inside the filter cylinder 51, rotate and loosen the plug 55 to expose the waste discharge tank 53. Then, the water entering the filter cylinder 51 will carry the impurities and be discharged through the waste discharge tank 53. After that, tighten the plug 55 again.

[0032] In this embodiment of the invention, water enters the filter cylinder 51 inside the filter pipe 2 from the inlet pipe 1, and then passes through the filter hole 54 into the intermediate pipe 3. When the pressure sensor detects that the pressure inside the inlet pipe 1 exceeds the set value, the controller controls the motor 103 to start. Then, the motor 103 drives the first gear 104 to rotate. After that, the first gear 104 drives the threaded sleeve 102 to rotate through the second gear 105. Subsequently, the threaded sleeve 102 drives the connecting rod 7 to rise along the inner wall of the intermediate pipe 3. Then, the connecting rod 7 drives the sealing piston 11 to rise. After that, the water flows into the outlet pipe 4 and is discharged. This avoids the problem of reduced accuracy or even failure of the pressure relief valve due to the weakening of the spring force caused by the use of a spring. The filter pipe 2 restricts the connecting rod 7 to move only along the axis of the intermediate pipe 3 by the cooperation of the limiting rod 13 and the limiting groove 12. The filter assembly 5 effectively filters impurities in the inlet pipe 1, preventing them from entering the intermediate pipe 3, thereby avoiding the blockage of the internal structure of the intermediate pipe 3 by impurities and ensuring the long-term stable operation of the pressure relief valve.

[0033] The working principle of this utility model is as follows: Water enters the filter cylinder 51 inside the filter pipe 2 from the inlet pipe 1, and then passes through the filter hole 54 into the intermediate pipe 3. When the pressure sensor detects that the pressure in the inlet pipe 1 exceeds the set value, the controller controls the motor 103 to start. Then the motor 103 drives the first gear 104 to rotate. After that, the first gear 104 drives the threaded sleeve 102 to rotate through the second gear 105. Subsequently, the threaded sleeve 102 drives the connecting rod 7 to rise along the inner wall of the intermediate pipe 3. Then the connecting rod 7 drives the sealing piston 11 to rise and disengage from the plug ring 6. After that, the water flows into the outlet pipe 4 and is discharged. When the pressure sensor detects that the pressure in the inlet pipe 1 is less than the set value, the controller controls the motor 103 to reset, thereby controlling the sealing piston 11 to reset. The sealing piston 11 abuts against the plug ring 6. In addition, it is necessary to frequently clean the impurities accumulated in the filter cylinder 51. Rotate to loosen the plug 55, so that the waste discharge trough 53 is exposed. Then the water entering the filter cylinder 51 will carry the impurities and be discharged through the waste discharge trough 53. After that, the plug 55 is tightened again.

[0034] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 safety relief valve for water cutting of carpet, comprising a water inlet pipe (1), a filter pipe (2), an intermediate pipe (3) and a water outlet pipe (4), characterized in that, The end of the water inlet pipe (1) is fixedly connected with a filter pipe (2), the upper end of the filter pipe (2) is fixedly connected with an intermediate pipe (3), the side wall of the intermediate pipe (3) is fixedly connected with a water outlet pipe (4), the upper end of the intermediate pipe (3) is fixedly connected with a top cover (9), the inner wall of the filter pipe (2) is matched with a filter assembly (5), the inner wall of the bottom end of the intermediate pipe (3) is fixedly connected with a plug ring (6), the inner wall of the intermediate pipe (3) is slidably connected with a sealing piston (11), the upper end of the sealing piston (11) is fixedly connected with a connecting rod (7), and the upper end of the connecting rod (7) penetrates through the top cover (9) and is matched with a thrust assembly (10). The thrust assembly (10) comprises a containing groove (101), a threaded sleeve (102), a motor (103), a first gear (104) and a second gear (105). The top cover (9) is provided with a containing groove (101), the inner wall of the containing groove (101) is rotatably connected with a threaded sleeve (102) through a bearing, the inner wall of the threaded sleeve (102) is threadedly connected with the connecting rod (7), the outer wall of the upper end of the threaded sleeve (102) is fixedly sleeved with a second gear (105), the top cover (9) is further fixedly connected with a motor (103), the driving end of the motor (103) is fixedly connected with a first gear (104), and the first gear (104) is meshingly connected with the second gear (105). It also comprises a controller and a pressure sensor, the pressure sensor is fixedly arranged on the water inlet pipe (1), and the controller is electrically connected with the motor (103) and the pressure sensor.

2. The safety relief valve for water cutting of carpet according to claim 1, wherein The bottom end of the plug ring (6) is provided with a chamfer (8).

3. The safety relief valve for water cutting of carpet according to claim 1, wherein The inner wall of the intermediate pipe (3) is provided with a limiting groove (12), the side wall of the connecting rod (7) is fixedly connected with a limiting rod (13), and the limiting rod (13) is slidably connected with the inner wall of the limiting groove (12).

4. The safety relief valve for water cutting of carpet according to claim 1, wherein The filter assembly (5) comprises a filter cylinder (51), a communication groove (52), a waste discharge groove (53), a filter hole (54) and a plug cover (55). The inner wall of the filter pipe (2) is fixedly connected with a filter cylinder (51), the side wall of the filter cylinder (51) is provided with a communication groove (52), the upper end of the filter cylinder (51) is provided with a plurality of evenly distributed filter holes (54), the side wall of the lower end of the filter cylinder (51) is provided with a waste discharge groove (53), and the side wall of the lower end of the filter cylinder (51) is threadedly connected with a plug cover (55).

Images