A VCR valve group detection device

Abstract

The application belongs to the technical field of automatic pollution discharge valves, in particular to a VCR valve group detection device, which comprises a block, a first oil passage, a second oil passage, a third oil passage and a fourth oil passage are arranged on the block, a first pressure valve and a second pressure valve are arranged in the block, the first pressure valve has one input end and two output ends, the input end of the first pressure valve is communicated with the first oil passage, one output end of the first pressure valve is communicated with the input end of the second pressure valve, the other output end of the first pressure valve is communicated with the second oil passage, the output end of the second pressure valve is communicated with the third oil passage, a closing oil channel for controlling the closing of the valve core of the second pressure valve is further arranged on the second pressure valve away from the third oil passage, and the closing oil channel is communicated with the fourth oil passage; the problem of how to intuitively and quickly detect the VCR valve group is solved.

Description

Technical Field

[0001] This application belongs to the field of automatic sewage valve technology, specifically a VCR valve group detection device. Background Technology

[0002] Because VCR valve assemblies require precise pressure output, their pressure output value needs to be tested after manufacturing to ensure it meets the standards. However, ordinary pressure testing simply involves measuring with a pressure gauge, and the gauge reading needs to be read, which is not intuitive enough. Utility Model Content

[0003] The purpose of this application is to address the shortcomings of existing technologies by designing a VCR valve group detection device by setting a first pressure valve and a second pressure valve on the block. This allows for direct observation of whether the pressure value is sufficient by connecting the VCR valve group to be tested to the first oil port on the block and observing whether oil flows out of the second and third oil ports. Simultaneously, by connecting the VCR valve group to be tested to the fourth oil port and observing whether the third oil port is blocked, multiple VCR valve groups can be tested simultaneously, improving detection efficiency and solving the problem of how to intuitively and quickly detect VCR valve groups.

[0004] To achieve the above objectives, this application adopts the following technical solution: A VCR valve group detection device includes a block with a first oil port, a second oil port, a third oil port, and a fourth oil port. A first pressure valve and a second pressure valve are disposed within the block. The first pressure valve has one input end and two output ends. The input end of the first pressure valve is connected to the first oil port, one output end of the first pressure valve is connected to the input end of the second pressure valve, the other output end of the first pressure valve is connected to the second oil port, and the output end of the second pressure valve is connected to the third oil port. A closing oil passage for controlling the valve core of the second pressure valve is also provided on the second pressure valve away from the third oil port, and the closing oil passage is connected to the fourth oil port.

[0005] Preferably, the block body is provided with a first valve chamber, the bottom of the first valve chamber is connected to a first oil passage through a first oil passage hole, the first oil passage hole is provided in the block body, and the second oil passage hole is connected to the first valve chamber at the side wall of the first valve chamber. The block body is provided with a first valve core that cooperates with the first valve chamber. When the first valve core moves to the bottom of the first valve chamber, it can airtightly isolate the first valve chamber from the first oil passage hole. When the first valve core leaves the bottom of the first valve chamber, it can make the first valve chamber connected to the first oil passage hole.

[0006] Preferably, a second valve chamber is provided on the block at a location away from the first valve chamber. The first valve chamber is connected to the second valve chamber through a second oil passage. One end of the second oil passage is on the side wall of the first valve chamber, and the other end is on the side wall of the second valve chamber. An expansion cavity is provided between the two ends of the second chamber within the block. The expansion cavity is located away from the connection between the second oil passage and the second valve chamber. The expansion cavity is connected to the third oil inlet through a third oil passage. A second valve core is fitted inside the second valve chamber. When the second valve core moves to the bottom wall of the second valve chamber, it can airtightly isolate the second valve chamber from the expansion cavity. When the second valve core leaves the bottom wall of the second valve chamber, it can make the second valve chamber connected to the expansion cavity.

[0007] Preferably, a recess is provided between the two ends of the sidewall on the second valve core, and the length of the projection of the recess on the axis of the second valve core is greater than the distance from the expansion cavity to the second oil passage hole.

[0008] Preferably, the shut-off oil passage is a fourth oil passage hole, and the bottom wall of the second valve chamber is connected to the fourth oil inlet through the fourth oil passage hole.

[0009] Preferably, a pressure gauge and a pressure sensor are provided on the block at the first oil inlet, the pressure sensor is signal-connected to the first valve core, and the pressure sensing value of the pressure sensor is 2.6 bar.

[0010] Preferably, the first valve core has a hollow structure, and the projection of the bottom of the first valve core on a plane parallel to the axis of the first valve core is trapezoidal. The first valve core has a first through hole in the middle, and a second through hole is provided on the surface of the first valve core corresponding to the waist of the trapezoid. A cylindrical tube with one open end is coaxially and sealed at the bottom of the first valve cavity. The outer wall of the first valve core is slidably connected to the inner wall of the cylindrical tube. A third through hole communicating with the first oil passage hole is provided on the bottom wall of the cylindrical tube. A plug body that mates with the third through hole is provided on the bottom surface of the first valve core. When the plug body mates with the third through hole, the first through hole is located outside the cylindrical tube, and the second through hole is located inside the cylindrical tube.

[0011] This application has the following beneficial effects: This application designs a VCR valve group detection device by setting a first pressure valve and a second pressure valve on the block. When in use, the VCR valve group to be tested is directly connected to the first oil port on the block, and the pressure value can be intuitively judged by observing whether oil flows out of the second oil port and the third oil port. At the same time, the VCR valve group to be tested is connected to the fourth oil port to observe whether the third oil port is blocked. Multiple VCR valve groups can be tested at the same time, improving the detection efficiency and solving the problem of how to intuitively and quickly detect VCR valve groups. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 For this Figure 1 A structural diagram of the back side; Figure 3 This application provides a cross-sectional view illustrating the relationship between the first valve chamber and the second valve chamber. Figure 4 This application presents a cross-sectional view of the second valve chamber.

[0013] Among them, 1. block; 2. first oil port; 3. second oil port; 4. third oil port; 5. fourth oil port; 6. first valve chamber; 7. first oil passage hole; 8. first valve core; 9. second valve chamber; 10. expansion chamber; 11. second valve core; 12. recessed part; 13. fourth oil passage hole; 14. pressure gauge; 15. pressure sensor; 16. second oil passage hole; 17. second through hole; 18. cylindrical tube; 19. third through hole; 20. plug. Detailed Implementation

[0014] like Figure 1-4 As shown, a VCR valve group detection device includes a block 1. The block 1 is provided with a first oil port 2, a second oil port 3, a third oil port 4, and a fourth oil port 5. The block 1 is provided with a first pressure valve and a second pressure valve. The first pressure valve has one input end and two output ends. The input end of the first pressure valve is connected to the first oil port 2. One output end of the first pressure valve is connected to the input end of the second pressure valve. The other output end of the first pressure valve is connected to the second oil port 3. The output end of the second pressure valve is connected to the third oil port 4. The second pressure valve is also provided with a closing oil passage for controlling the valve core of the second pressure valve at a distance away from the third oil port 4. The closing oil passage is connected to the fourth oil port 5.

[0015] In this embodiment, during use, the output end of the VCR valve assembly is connected to the first oil port 2. The pressure values ​​of the first and second pressure valves are set. If the pressure of the liquid exiting the VCR valve assembly reaches the preset value, the first and second pressure valves will open, allowing oil to flow from both the second and third oil ports 3 and 4. Observing whether oil flows out is more intuitive than reading readings, and the two ports (2, 3 and 4) increase the observation range. Furthermore, the combined adjustment of the first and second pressure valves increases the pressure adjustment range, and this two-stage pressure adjustment makes the adjusted pressure value more accurate. The output end of another VCR valve assembly under test can also be connected to the fourth oil port 5. If the flow rate is sufficient, the oil in the fourth port 5 will close the third port. This allows the VCR valve assembly to be detected through both the first and fourth oil ports 2 and 5, improving detection efficiency.

[0016] In a preferred embodiment, the block 1 contains a first valve chamber 6. The bottom of the first valve chamber 6 is connected to a first oil passage 2 via a first oil passage 7. The first oil passage 7 is located within the block 1. A second oil passage 3 is located on the side wall of the first valve chamber 6 and is connected to it. The block 1 has a first valve core 8 that mates with the first valve chamber 6. When the first valve core 8 moves to the bottom of the first valve chamber 6, it can airtightly isolate the first valve chamber 6 from the first oil passage 7. When the first valve core 8 leaves the bottom of the first valve chamber 6, it allows the first valve chamber 6 to connect with the first oil passage 7. With this configuration, the liquid output from the tested VCR valve assembly enters through the first oil passage 2, passes through the first oil passage 7 to the first valve chamber 6, and then pushes open the first valve core 8, allowing the liquid output from the tested VCR valve assembly to flow out through the second oil passage 2 and the third oil passage 4.

[0017] As a preferred embodiment, the block 1 has a second valve chamber 9 located away from the first valve chamber 6. The first valve chamber 6 communicates with the second valve chamber 9 through a second oil passage 16. One end of the second oil passage 16 is on the side wall of the first valve chamber 6, and the other end is on the side wall of the second valve chamber 9. An expansion cavity 10 is provided between the two ends of the second chamber 9 within the block 1. The expansion cavity 10 is located away from the communication point between the second oil passage 16 and the second valve chamber 9. The expansion cavity 10 communicates with the third oil inlet 4 through a third oil passage. A second valve core 11 is fitted inside the second valve chamber 9. When the second valve core 11 moves to the bottom wall of the second valve chamber 9, it can airtightly isolate the second valve chamber 9 from the expansion cavity 10. When the second valve core 11 leaves the bottom wall of the second valve chamber 9, it can make the second valve chamber 9 communicate with the expansion cavity 10. With this configuration, the liquid in the first valve chamber 6 enters the second valve chamber 9 through the second oil passage 16, squeezing the second valve core 11 and connecting the second valve chamber 19 with the expansion chamber 10. This allows the liquid output from the tested VCR valve assembly to flow out through the third oil port 4. In other words, the first valve chamber 6 and the first valve core 8 constitute the first pressure valve, and the second valve chamber 9 and the second valve core 11 constitute the second pressure valve. The liquid, after pressure adjustment by the first pressure valve, flows into the second pressure valve, is squeezed by the second pressure valve, and then flows out through the third oil port 4, forming a two-stage pressure regulation. This makes the detection more accurate.

[0018] As a preferred embodiment, a recess 12 is provided between the two ends of the sidewall of the second valve core 11. The length of the projection of the recess 12 onto the axis of the second valve core 11 is greater than the distance from the expansion cavity 10 to the second oil passage 16. By providing the recess 12, it is convenient for the liquid entering the second valve cavity 9 through the second oil passage 16 to compress the second valve core 11. The recess 12 is provided to allow liquid to flow out of the cavity, thereby enabling the liquid to compress the second valve core 11.

[0019] As a preferred embodiment, the shut-off oil passage is the fourth oil passage 13, and the bottom wall of the second valve chamber 9 is connected to the fourth oil port 5 through the fourth oil passage 13. With this configuration, the oil output from the VCR valve assembly being tested enters the fourth oil passage 13 through the fourth oil port 15, squeezing the second valve core 11 and causing it to isolate the expansion chamber 10 and the second valve chamber 9. Therefore, during testing, if the liquid pressure flowing out of the VCR valve assembly being tested is insufficient, liquid will flow out of the fourth oil port 5; if the liquid pressure flowing out of the VCR valve assembly being tested is sufficient, the fourth oil port 5 will be closed.

[0020] As a preferred embodiment, the block 1 is equipped with a pressure gauge 14 and a pressure sensor 15 at the first oil port 2. The pressure sensor 15 is signal-connected to the first valve core 8, and the pressure sensing value of the pressure sensor 15 is 2.6 bar. The pressure gauge 14 facilitates reading and adjustment of the reading. The pressure sensor 15 is configured so that the first valve core 8 only moves when the pressure reaches 2.6 bar, allowing the liquid output from the monitored VCR valve assembly to enter the first valve chamber 6 from the first oil port 2. This makes the first pressure valve more accurate.

[0021] As a preferred embodiment, the first valve core 8 is a hollow structure. The projection of the bottom of the first valve core 8 onto a plane parallel to the axis of the first valve core 9 is trapezoidal. A first through hole 16 is provided in the middle of the first valve core 8. A second through hole 17 is provided on the surface of the first valve core 8 corresponding to the waist of the trapezoid. A cylindrical tube 18 with one open end is coaxially and sealed at the bottom of the first valve cavity 6. The outer wall of the first valve core 8 is slidably and sealed to the inner wall of the cylindrical tube 18. A third through hole 19 communicating with the first oil passage hole 7 is provided on the bottom wall of the cylindrical tube 18. A plug 20 that mates with the third through hole 19 is provided on the bottom surface of the first valve core 8. When the plug 20 mates with the third through hole 19, the first through hole 16 is located outside the cylindrical tube 18, and the second through hole 17 is located inside the cylindrical tube 18. With this configuration, if the pressure of the liquid flowing into the first valve chamber 6 from the first oil passage 7 is high enough, it will lift the first valve core 8, causing the plug 20 to separate from the third through hole 19. The liquid then enters the first valve core 8 through the first through hole 16, and then flows into the first valve chamber 6 through the second through hole 17, remaining outside the first valve core 8. When the first valve core 8 is not lifted away from the third through hole 19, the liquid in the first oil passage 7 cannot enter the first through hole 16, and therefore cannot enter the first valve chamber 6. The cylindrical tube 18 is designed to ensure that the first valve core 8 and the first valve chamber 6 are coaxial, thus preventing the first valve core 8 from wobbling within the first valve chamber 6 and ensuring that the plug 20 is ready to block the third through hole 19 when closure is required.

Claims

1. A VCR valve assembly testing device, characterized in that: The device includes a block (1), which has a first oil inlet (2), a second oil inlet (3), a third oil inlet (4), and a fourth oil inlet (5). The block (1) contains a first pressure valve and a second pressure valve. The first pressure valve has one input end and two output ends. The input end of the first pressure valve is connected to the first oil inlet (2). One output end of the first pressure valve is connected to the input end of the second pressure valve. The other output end of the first pressure valve is connected to the second oil inlet (3). The output end of the second pressure valve is connected to the third oil inlet (4). The second pressure valve also has a closing oil passage for controlling the valve core of the second pressure valve at a distance away from the third oil inlet (4). The closing oil passage is connected to the fourth oil inlet (5).

2. The VCR valve group detection device according to claim 1, characterized in that: The block (1) is provided with a first valve chamber (6). The bottom of the first valve chamber (6) is connected to the first oil passage (2) through the first oil passage (7). The first oil passage (7) is located in the block (1). The second oil passage (3) is connected to the first valve chamber (6) at the side wall of the first valve chamber (6). The block (1) is provided with a first valve core (8) that cooperates with the first valve chamber (6). When the first valve core (8) moves to the bottom of the first valve chamber (6), it can airtightly isolate the first valve chamber (6) from the first oil passage (7). When the first valve core (8) leaves the bottom of the first valve chamber (6), it can make the first valve chamber (6) connected to the first oil passage (7).

3. The VCR valve group testing device according to claim 2, characterized in that: The block (1) has a second valve chamber (9) located away from the first valve chamber (6). The first valve chamber (6) is connected to the second valve chamber (9) through a second oil passage (16). One end of the second oil passage (16) is on the side wall of the first valve chamber (6), and the other end is on the side wall of the second valve chamber (9). An expansion cavity (10) is provided inside the block (1) between the two ends of the second valve chamber (9). The expansion cavity (10) is located away from the second oil passage (16) and the second valve chamber (9). At the connection point of the valve chamber (9), the expansion chamber (10) is connected to the third oil passage (4) through the third oil passage hole. The second valve chamber (9) is equipped with a second valve core (11). When the second valve core (11) moves to the bottom wall of the second valve chamber (9), it can isolate the second valve chamber (9) from the expansion chamber (10) in an airtight manner. When the second valve core (11) leaves the bottom wall of the second valve chamber (9), it can make the second valve chamber (9) connected to the expansion chamber (10).

4. The VCR valve assembly testing device according to claim 3, characterized in that: A recess (12) is provided between the two ends of the side wall on the second valve core (11). The length of the projection of the recess (12) on the axis of the second valve core (11) is greater than the distance from the expansion cavity (10) to the second oil passage hole (16).

5. The VCR valve assembly testing device according to claim 3, characterized in that: The shut-off oil passage is the fourth oil passage hole (13), and the bottom wall of the second valve chamber (9) is connected to the fourth oil port (5) through the fourth oil passage hole (13).

6. The VCR valve group testing device according to claim 2, characterized in that: The block (1) is provided with a pressure gauge (14) and a pressure sensor (15) at the first oil inlet (2). The pressure sensor (15) is connected to the first valve core (8) and the pressure sensing value of the pressure sensor (15) is 2.6 bar.

7. A VCR valve assembly testing device according to claim 2, characterized in that: The first valve core (8) is a hollow structure. The projection of the bottom of the first valve core (8) on a plane parallel to the axis of the first valve core (8) is trapezoidal. The first valve core (8) has a first through hole in the middle. The first valve core (8) has a second through hole (17) on the surface corresponding to the waist of the trapezoid. The inner bottom of the first valve cavity (6) is coaxially sealed with a cylindrical tube (18) with one end open. The outer wall of the first valve core (8) is sealed and slidably connected to the inner wall of the cylindrical tube (18). The bottom wall of the cylindrical tube (18) is provided with a third through hole (19) communicating with the first oil passage hole (7). The bottom surface of the first valve core (8) is provided with a plug (20) that cooperates with the three through holes (19). When the plug (20) cooperates with the third through hole (19), the first through hole is located outside the cylindrical tube (18), and the second through hole (17) is located inside the cylindrical tube (18).

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