Valve plate component suitable for liquid ring vacuum pump and compressor

Abstract

The utility model belongs to the technical field of vacuum pump valve plates, in particular to a valve plate component suitable for a liquid ring vacuum pump and a compressor, which comprises a sectional valve plate and a water blocking plate, the sectional valve plate comprises at least two valve plates, a limit block and a vertical block which are matched with the sectional valve plate are arranged on the water blocking plate, and the water blocking plate is fixedly connected with the limit block and the vertical block. The sectional type valve plate is clamped between the limiting block and the vertical block. The sectional type valve plates work in respective ranges and do not interfere with one another, the situation that the valve plates are bent and broken due to the fact that the length of the valve plates is large can be avoided, the valve plates can adjust opening and closing of exhaust ports in corresponding areas according to exhaust pressure of all parts of a pump, and adjusting accuracy is improved; and when each valve plate of the sectional valve plate moves, the stress is more uniform, the possibility of bending and breaking is avoided, resistance from the interior of the valve plate is avoided, the movement of the valve plate is smoother, and the sensitivity of adjustment is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum pump valve plate technology, and in particular a valve plate component suitable for liquid ring vacuum pumps and compressors. Background Technology

[0002] A liquid ring vacuum pump is a vacuum pump in which liquid is involved in operation. The liquid forms a stable liquid ring under the drive of the impeller. When the impeller rotates, the volume of the cavity between the blades and the liquid ring changes periodically, creating a negative pressure at the inlet, which can draw gas into the pump and discharge it after compression. When the exhaust pressure is greater than atmospheric pressure, the pump is called a compressor.

[0003] The pump has a distribution plate at its inlet and outlet. Gas enters and exits the pump chamber through the inlet and outlet holes on the distribution plate. To prevent backflow of external gas when the exhaust pressure is too low, a valve plate component acting as a check valve is installed on the exhaust side of the distribution plate. The valve plate component includes a valve plate, a baffle plate, studs (screws), nuts, and other parts. The baffle plate is installed on the back of the valve plate and restricts the range of movement of the valve plate. When the pump is working, the valve plate moves between the baffle plate and the distribution plate. When the exhaust pressure is less than the external pressure, the valve plate is in close contact with the exhaust hole of the distribution plate; when the exhaust pressure increases to a level sufficient to push the valve plate open, the valve plate begins to move away from the exhaust hole of the distribution plate, but it can only move as far as it is in close contact with the baffle plate.

[0004] The existing liquid ring pump valve plate components have the following problems:

[0005] 1. There is only one valve plate, and it is quite long. Due to the large fluctuations in exhaust pressure and the different exhaust pressures in different parts, the valve plate is prone to bending, folding, or even breaking, resulting in a short service life of the valve plate.

[0006] 2. The valve plate studs pass through the inside of the valve plate, resulting in uneven stress distribution. The parts where the studs pass through experience greater resistance from the studs, while the parts without studs experience less resistance, which can easily lead to bending, folding, or even breakage. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, this utility model proposes a valve plate component suitable for liquid ring vacuum pumps and compressors. The segmented valve plates operate independently within their respective ranges, preventing bending and breakage due to their large length. Furthermore, the valve plates allow for adjustment of the opening and closing of corresponding exhaust ports based on the exhaust pressure of different parts of the pump, improving the accuracy of adjustment. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0008] A valve plate component suitable for liquid ring vacuum pumps and compressors includes a segmented valve plate and a water-blocking plate. The segmented valve plate includes at least two valve plates. A limiting block and a vertical block that cooperate with the segmented valve plate are provided on the water-blocking plate. The water-blocking plate is fixedly connected to the limiting block and the vertical block. The segmented valve plate is engaged between the limiting block and the vertical block.

[0009] Furthermore, the number of valve plates in a segmented valve plate is 2-20.

[0010] Furthermore, through holes or screw holes are provided in the middle of the blocks.

[0011] Specifically, the water-blocking plate is fixedly connected to the distribution plate by bolts passing through through holes or screw holes.

[0012] Specifically, the segmented valve plate is positioned between the water-blocking plate and the distribution plate, and the segmented valve plate can move between the water-blocking plate and the distribution plate.

[0013] Specifically, two identical segmented valve plates are installed between the water-blocking plate and the distribution plate.

[0014] Specifically, the movement of each segment of the valve plate does not affect the movement of the others.

[0015] Even better, the limiting block and the upright block are integrally formed with the water-blocking plate.

[0016] Better yet, the limiting block and the upright block are welded and fixed to the water-blocking plate.

[0017] Even better, the water-blocking plate can be divided into multiple small pieces.

[0018] The segmented valve plates of this invention operate independently within their respective ranges, preventing bending or breakage due to their large length. They also allow the valve plates to adjust the opening and closing of corresponding exhaust ports based on the exhaust pressure of different parts of the pump, improving adjustment accuracy. Furthermore, the segmented valve plates experience more even force during movement, preventing bending or breakage, and eliminating internal resistance, resulting in smoother movement and enhanced adjustment sensitivity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 for Figure 1 Exploded view;

[0021] Figure 3 This is an exploded view of Embodiment 2 of this utility model;

[0022] Figure 4 This is a schematic diagram of a segmented valve plate.

[0023] Figure 5 This is a schematic diagram of the water-blocking plate.

[0024] Figure 6 This is an exploded view of Embodiment 3 of this utility model. Detailed Implementation

[0025] Example 1

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 for Figure 1 Exploded view; such as Figure 1 and Figure 2 As shown, a valve plate component suitable for liquid ring vacuum pumps and compressors includes a segmented valve plate and a water-blocking plate 1. The segmented valve plate includes a first valve plate 2 and a second valve plate 3. A first limiting block 1.1 and a first upright block 1.2 that cooperate with the first valve plate 2 are provided on the water-blocking plate 1. A second limiting block 1.3 and a second upright block 1.4 that cooperate with the second valve plate 3 are provided on the water-blocking plate 1. The water-blocking plate 1 is fixedly connected to the first limiting block 1.1, the second limiting block 1.3, the first upright block 1.2, and the second upright block 1.4. The first valve plate 2 is engaged between the first limiting block 1.1 and the first upright block 1.2, and the second valve plate 3 is engaged between the second limiting block 1.3 and the second upright block 1.4.

[0027] A first screw hole 1.5 and a second screw hole 1.6 are provided between the first upright block 1.2 and the second upright block 1.4. The height of the limiting block is equal to the height of the upright block. The first valve plate 2 and the second valve plate 3 can both move along the height direction of the limiting block and the upright block.

[0028] In Embodiment 1, the first limiting block 1.1, the second limiting block 1.2, the first upright block 1.3, and the second upright block 1.4 are integrally formed with the water blocking plate 1. The first limiting block 1.1, the second limiting block 1.2, the first upright block 1.3, and the second upright block 1.4 can also be fixed with fasteners. The number of valve plates in the segmented valve plate can be set from 2 to 20 according to actual needs. The water blocking plate 1 can also be divided into multiple small blocks according to actual needs.

[0029] Example 2

[0030] Figure 3 This is an exploded view of Embodiment 2 of this utility model; Figure 4 This is a schematic diagram of a segmented valve plate. Figure 5 This is a schematic diagram of the water-blocking plate; for example... Figures 3 to 5 As shown, the water blocking plate 1 is fixedly connected to the distribution plate 5 by bolts 6. The segmented valve plate includes at least one limiting port and at least one locking port. The limiting port is set at any corner of the valve plate, and the locking port is set at any corner or any side of the valve plate. The limiting port cooperates with the limiting block, and the locking port cooperates with the upright block.

[0031] The segmented valve plate in Embodiment 2 consists of three parts: a first valve plate 2, a second valve plate 3, and a third valve plate 4. The first valve plate 2, the second valve plate 3, and the third valve plate 4 are positioned between the water-blocking plate 1 and the distribution plate 5. The first valve plate 2, the second valve plate 3, and the third valve plate 4 can all move between the water-blocking plate and the distribution plate 5.

[0032] A first limiting port 2.1, a second limiting port 2.2, and a third limiting port 2.3 are respectively provided at the three corners of the first valve plate 2, and a first locking slot 2.4 is provided on the side directly opposite the first limiting port 2.1 and the second limiting port 2.2; a fourth limiting port 3.1, a fifth limiting port 3.2, a sixth limiting port 3.3, and a seventh limiting port 3.4 are respectively provided at the four corners of the second valve plate 3, and a second locking slot 3.5 is provided on the side directly opposite the fourth limiting port 3.1 and the fifth limiting port 3.2; an eighth limiting port 4.1, a ninth limiting port 4.2, and a third locking slot 4.3 are respectively provided at the three corners of the third valve plate 4, and a fourth locking slot 4.4 is provided on the side directly opposite the eighth limiting port 4.1 and the ninth limiting port 4.2.

[0033] The water-blocking plate 1 is provided with a first limiting block 1.1 that cooperates with the first limiting port 2.1, a second limiting block 1.2 that cooperates with the second limiting port 2.2 and the fourth limiting port 3.1, a third limiting block 1.3 that cooperates with the third limiting port 2.3 and the sixth limiting port 3.3, a fourth limiting block 1.4 that cooperates with the fifth limiting port 3.2 and the eighth limiting port 4.1, and a fifth limiting block 1.5 that cooperates with the seventh limiting port 3.4 and the ninth limiting port 4.2; the water-blocking plate 1 is provided with a first upright block 1.6, a second upright block 1.7, a third upright block 1.8, and a fourth upright block 1.9 that cooperate with the first locking port 2.4, the second locking port 3.5, the third locking port 4.3, and the fourth locking port 4.4; and three round holes 1.10 are provided in the middle of the water-blocking plate 1.

[0034] In Embodiment 2, all the limiting blocks and upright blocks are welded and fixed to the water-blocking plate 1. A first through hole 1.11 is provided in the middle of the first upright block 1.6, a second through hole 1.12 is provided in the middle of the second upright block 1.7, a third through hole 1.13 is provided in the middle of the third upright block 1.8, and a fourth through hole 1.14 is provided in the middle of the fourth upright block 1.9. The water-blocking plate 1 is fixedly connected to the distribution plate 5 by four bolts 6 passing through the first through hole 1.11, the second through hole 1.12, the third through hole 1.13, and the fourth through hole 1.14 respectively.

[0035] The other settings in Example 2 are the same as in Example 1, and will not be repeated here.

[0036] During installation, the first valve plate 2, the second valve plate 3, and the third valve plate 4 are placed between the corresponding limiting blocks and upright blocks of the water blocking plate 1, and then the entire water blocking plate 1 is locked onto the distribution plate 5 with bolts 6. Since there is a certain space between the water blocking plate 1 and the distribution plate 5, the first valve plate 2, the second valve plate 3, and the third valve plate 4 can all move back and forth between the water blocking plate 1 and the distribution plate 5. The two extreme positions of movement are close to the exhaust port of the distribution plate 5 and close to the water blocking plate 1. Moreover, the movement of the first valve plate 2, the second valve plate 3, and the third valve plate 4 does not affect each other, and they serve to open and close the exhaust port.

[0037] Before operating the vacuum pump, water is supplied to it. Once a certain water volume is reached, the motor is started. After a stable liquid ring is formed inside the vacuum pump, it can operate normally. If the vacuum level of the operating environment is relatively high, the first valve plate 2, the second valve plate 3, and the third valve plate 4 will be tightly pressed against the distribution plate 5, and the exhaust port of the distribution plate 5 will remain at its minimum opening to prevent external air from entering. When the pressure inside the pump increases sufficiently to push open the valve plate, the first valve plate 2, the second valve plate 3, or the third valve plate 4 will move and open the corresponding exhaust port.

[0038] Example 3

[0039] Figure 6 This is an exploded view of Embodiment 3 of this utility model; as shown Figure 6 As shown, in Embodiment 3, two identical segmented valve plates are installed between the water-blocking plate 1 and the distribution plate 5, namely, two first valve plates 2, two second valve plates 3, and a third valve plate 4 are installed simultaneously to increase strength. The other settings in Embodiment 3 are the same as in Embodiment 2, and will not be described again here.

[0040] In summary, the segmented valve plates of this invention operate independently within their respective ranges without interfering with each other. This not only avoids bending or breakage due to the large length of the valve plates, but also allows the valve plates to adjust the opening and closing of the corresponding exhaust ports according to the exhaust pressure of different parts of the pump, improving the accuracy of adjustment. Furthermore, when the segmented valve plates move, the force is more evenly distributed, avoiding the possibility of bending or breakage, and there is no resistance from within the valve plates, resulting in smoother movement and enhanced adjustment sensitivity.

Claims

1. A valve plate member suitable for use in a liquid ring vacuum pump and compressor, characterized in that, The segmented valve plate comprises at least two valve plates, and the water blocking plate is provided with limiting blocks and vertical blocks matched with the segmented valve plate, and the water blocking plate is fixedly connected with the limiting blocks and vertical blocks, and the segmented valve plate is clamped between the limiting blocks and vertical blocks.

2. The valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 1, characterized in that, The number of valve plates of the segmented valve plate is 2-20.

3. The valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 1, characterized in that, A through hole or a threaded hole is arranged in the middle of the vertical block.

4. The valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 3, characterized in that, The water blocking plate is fixedly connected with the distribution plate through bolts passing through the through hole or the threaded hole.

5. Valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 4, characterized in that The segmented valve plate is clamped between the water blocking plate and the distribution plate, and the segmented valve plate can move between the water blocking plate and the distribution plate.

6. Valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 5, characterized in that Two identical segmented valve plates are arranged between the water blocking plate and the distribution plate.

7. The valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 5, characterized in that, The movement of each valve plate of the segmented valve plate does not affect each other.

8. The valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 1, characterized by, The limiting blocks and vertical blocks are integrally formed with the water blocking plate.

9. The valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 1, characterized by, The limiting blocks and vertical blocks are fixedly welded with the water blocking plate.

10. The valve plate member suitable for use in a liquid ring vacuum pump and compressor according to claim 1, characterized by, The water blocking plate can be divided into multiple small blocks.

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