Liquid suction prevention device of turbine vacuum pump

Abstract

The utility model relates to the technical field of turbine vacuum pump assemblies, and particularly discloses a turbine vacuum pump liquid suction prevention device which comprises a unit, a connecting flange is installed at one end of the unit, a first gas conveying pipe is fixed to one end of the connecting flange, and a sleeve is arranged on the outer wall of the axial end of the first gas conveying pipe in a sleeved mode. A second gas conveying pipe penetrates out of the sleeve, and a filtering mechanism is arranged between the first gas conveying pipe and the second gas conveying pipe. The filtering mechanism comprises a connecting block, the connecting block is arranged between the first gas conveying pipe and the second gas conveying pipe, and under the cooperation of the connecting block, a connecting ring, a fixing block, a mounting ring, a non-woven fabric bag, a mounting hole, a connecting frame and a high-density filter screen, water vapor and water drops of circulating gas can be blocked and filtered; influence caused by water scale or crusting and chippings entering the unit after long-time accumulation is avoided, and meanwhile disassembly and assembly for maintenance and cleaning are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine vacuum pump assemblies, and in particular to a liquid suction prevention device for a turbine vacuum pump. Background Technique

[0002] A turbine vacuum pump is a vane rotary vacuum pump and is applied to the vacuum systems of industries such as papermaking, chemical engineering, and metallurgy. Due to its advantages of large pumping volume, high efficiency, no need for working fluid, and no corrosion and scaling of equipment, it is a replacement product for positive displacement vacuum equipment. The turbine vacuum pump uses gas as the working medium. Since the density and viscosity coefficient of liquid are much larger than those of gas, especially when the rotational speed of the centrifugal impeller is above 20,000 r / min, the force generated by the liquid on the impeller is much larger than the force generated by the gas on the impeller. Therefore, a liquid suction prevention device is needed to block it.

[0003] In the existing technology, a gas-liquid separator or a similar device is used to prevent liquid from entering the turbine vacuum pump, so as to avoid affecting the balance of the turbine vacuum pump rotor, the quality of the impeller blades, etc., and ensure the normal use of the turbine vacuum pump;

[0004] The existing technical solutions prevent liquid from entering the turbine vacuum pump system through a gas-liquid separator or a similar device, and this measure is effective in most cases. However, the problem is that these devices cannot completely prevent the liquid from remaining inside the ventilation pipeline. Long-term accumulation may lead to the formation of water scale or corrosion of the pipeline, which will have an adverse impact on the normal use of the turbine vacuum pump. Summary of the Invention

[0005] The purpose of the utility model is to provide a liquid suction prevention device for a turbine vacuum pump, which can block and filter the water vapor and water droplets in the flowing gas, and adsorb them to avoid accumulation and formation of water scale or crust over time, and prevent debris from entering the unit and causing influence. At the same time, it is convenient for disassembly and assembly for maintenance and cleaning, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A liquid suction prevention device for a turbine vacuum pump, including a unit, one end of the unit is provided with a connecting flange, and one end of the connecting flange is fixed with a first gas transmission pipe. The outer wall of the axial end of the first gas transmission pipe is sleeved with a sleeve, and a second gas transmission pipe passes through the inside of the sleeve. A filtering mechanism is arranged between the first gas transmission pipe and the second gas transmission pipe;

[0007] The filtering mechanism includes a connecting block which is arranged between the first air delivery pipe and the second air delivery pipe. A connecting ring is fixed to the top of the connecting block. A fixing block is fixed inside the connecting ring. One end of the fixing block away from the connecting ring is connected with an installation ring. A non-woven fabric bag is arranged on one side of the fixing block outside the installation ring. An installation hole is formed inside the connecting block. A connecting frame passes through the inner wall of the installation ring, and a high-density filter screen is embedded inside the connecting frame.

[0008] Preferably, the first air delivery pipe communicates with the second air delivery pipe through a sleeve, and the sleeve is threadedly connected with the second air delivery pipe.

[0009] Preferably, the connecting ring is threadedly connected with the first air delivery pipe, and the first air delivery pipe is in close fit with the connecting block.

[0010] Preferably, the top of the connecting frame is connected with a fixing cylinder, and a blocking mechanism is arranged above the fixing cylinder.

[0011] Preferably, the blocking mechanism includes a first ball bearing which is embedded at the top of the fixing cylinder. A connecting rod passes through the inside of the first ball bearing. A second ball bearing is sleeved on the top of the connecting rod, and an installation rod is connected above the second ball bearing.

[0012] Preferably, the blocking mechanism further includes a fan blade which is fixed on the outer wall of the connecting rod, and a hydrophobic film is embedded inside the fan blade.

[0013] Preferably, a rotating structure is formed between the fixing cylinder and the connecting rod through the first ball bearing, and a rotating structure is formed between the connecting rod and the installation rod through the second ball bearing.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. Through the cooperation of the connecting block, connecting ring, fixing block, installation ring, non-woven fabric bag, installation hole, connecting frame and high-density filter screen, it is possible to block and filter the water vapor and water droplets in the flowing gas, and adsorb them to avoid accumulation and formation of scale or crust over time, and prevent debris from entering the unit and causing influence. At the same time, it is convenient for disassembly and assembly for maintenance and cleaning;

[0016] 2. Through the fixing cylinder, first ball bearing, connecting rod, second ball bearing, installation rod, fan blade and hydrophobic film, it can rotate under the flow of gas, and the hydrophobic film adsorbs and blocks the water vapor in the gas, further improving the effect of preventing liquid flow. Description of the Drawings

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is the overall structure view of the present invention;

[0019] Figure 2 It is the structural schematic diagram of the connecting block of the present invention;

[0020] Figure 3 It is the structural schematic diagram of the high-density filter net of the present invention;

[0021] Figure 4 It is the structural schematic diagram of the mounting rod of the present invention.

[0022] Explanation of the reference numerals:

[0023] 1, unit; 2, connecting flange; 3, first gas transmission pipe; 4, sleeve; 5, second gas transmission pipe; 6, filtering mechanism; 601, connecting block; 602, connecting ring; 603, fixing block; 604, mounting ring; 605, non-woven fabric bag; 606, mounting hole; 607, connecting frame; 608, high-density filter net; 7, fixing cylinder; 8, blocking mechanism; 801, first ball bearing; 802, connecting rod; 803, second ball bearing; 804, mounting rod; 805, fan blade; 806, hydrophobic film. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] The present invention provides a technical solution:

[0026] Please refer to Figures 1 to 3, A liquid suction prevention device for a turbine vacuum pump, comprising a unit 1. One end of the unit 1 is equipped with a connecting flange 2. One end of the connecting flange 2 is fixed with a first air pipe 3. A sleeve 4 is sleeved on the outer wall of the axial end of the first air pipe 3. A second air pipe 5 passes through the inside of the sleeve 4. A filtering mechanism 6 is arranged between the first air pipe 3 and the second air pipe 5; The filtering mechanism 6 includes a connecting block 601. The connecting block 601 is arranged between the first air pipe 3 and the second air pipe 5. The top of the connecting block 601 is fixed with an adapter ring 602. A fixing block 603 is fixed inside the adapter ring 602. One end of the fixing block 603 away from the adapter ring 602 is connected with an installation ring 604. A non-woven fabric bag 605 is arranged on one side of the fixing block 603 outside the installation ring 604. An installation hole 606 is opened inside the connecting block 601. A connecting frame 607 passes through the inner wall of the installation ring 604. A high-density filter screen 608 is embedded inside the connecting frame 607. The first air pipe 3 communicates with the second air pipe 5 through the sleeve 4. The sleeve 4 is threadedly connected with the second air pipe 5. The adapter ring 602 is threadedly connected with the first air pipe 3. The first air pipe 3 is in close fit with the connecting block 601.

[0027] By adopting the above technical solution, with the cooperation of the connecting flange 2 and the sleeve 4, the unit 1, the first air pipe 3 and the second air pipe 5 are connected as a whole, and at the same time, it is convenient to disassemble and assemble for cleaning and maintenance of the filtering mechanism 6. After being threadedly connected through the adapter ring 602 and the first air pipe 3 and adjusting the position of the sleeve 4, it is convenient to quickly disassemble and assemble the filtering mechanism 6 with the first air pipe 3. A gap is formed by the fixed fixing block 603 and the installation ring 604 of the adapter ring 602, which is convenient for placing the non-woven fabric bag 605 containing water-absorbing filler. The water droplets and water vapor filtered by the high-density filter screen 608 embedded in the connecting frame 607 drip and are absorbed, avoiding the accumulation of water to form scale or crust, affecting the pipeline or being blown to the turbine vacuum pump to cause an impact. The connecting block 601 facilitates holding the filtering mechanism 6 for disassembly and assembly, and the gas passes through the connecting block 601 through the installation hole 606 and is in close fit with the high-density filter screen 608.

[0028] Specifically, as Figure 4 shown, the top of the connecting frame 607 is connected with a fixed cylinder 7. A blocking mechanism 8 is arranged above the fixed cylinder 7. The blocking mechanism 8 includes a first ball bearing 801. The first ball bearing 801 is embedded at the top of the fixed cylinder 7. A connecting rod 802 passes through the inside of the first ball bearing 801. A second ball bearing 803 is sleeved on the top of the connecting rod 802. An installation rod 804 is connected above the second ball bearing 803. The blocking mechanism 8 further includes a fan blade 805. The fan blade 805 is fixed on the outer wall of the connecting rod 802. A hydrophobic film 806 is embedded inside the fan blade 805. A rotating structure is formed between the fixed cylinder 7 and the connecting rod 802 through the first ball bearing 801. A rotating structure is formed between the connecting rod 802 and the installation rod 804 through the second ball bearing 803.

[0029] By adopting the above technical solution, after the connecting ring 602 is installed, the connecting rod 802 passes through the second ball bearing 803 installed in the mounting rod 804, and with the cooperation of the fixed cylinder 7 and the first ball bearing 801, the connecting rod 802 can rotate stably. With the blowing of the gas, the fan blade 805 drives the connecting rod 802 to rotate, and the rotating fan blade 805 drives the hydrophobic film 806 to block the water vapor and the like in the gas, further improving the blocking effect on the liquid.

[0030] Working principle: The unit 1 is connected to the first gas pipeline 3 through the connecting flange 2 and communicates with the second gas pipeline 5 through the sleeve 4. By screwing the sleeve 4, it is convenient to disassemble and assemble the filtering mechanism 6 for cleaning and maintenance. The connecting ring 602 is threadedly connected to the first gas pipeline 3, so that the connecting block 601 fits the bottom end of the first gas pipeline 3 for convenient taking and disassembly of the filtering mechanism 6. The connecting ring 602 is fixed to the mounting ring 604 through the fixing block 603, and a non-woven fabric bag 605 filled with activated carbon or water-absorbing material filler is placed in the reserved gap. The gas flows through the mounting hole 606 and is filtered by the high-density filter net 608 installed in the connecting frame 607, so that water vapor, water droplets, etc. slide off to avoid accumulation or residue. The connecting rod 802 passing through the first ball bearing 801 installed in the fixed cylinder 7, under the connection of the connecting ring 602 and the first gas pipeline 3, passes through the second ball bearing 803 installed in the mounting rod 804. The mounting rod 804 is fixed inside the first gas pipeline 3, so that the fan blade 805 drives the connecting rod 802 to rotate under the push of the air flow, and at the same time, the hydrophobic film 806 adsorbs the water vapor or water droplets in the gas.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for preventing liquid suction of a turbine vacuum pump, comprising a unit (1), characterized in that: A connecting flange (2) is installed at one end of the unit (1), and a first gas pipeline (3) is fixed to one end of the connecting flange (2); a sleeve (4) is sleeved on the outer wall of one axial end of the first gas pipeline (3), and a second gas pipeline (5) passes through the interior of the sleeve (4); a filtering mechanism (6) is provided between the first gas pipeline (3) and the second gas pipeline (5); The filtering mechanism (6) comprises a connecting block (601), the connecting block (601) being arranged between the first gas supply pipe (3) and the second gas supply pipe (5), and a connecting ring (602) being fixed at the top end of the connecting block (601), a fixing block (603) being fixed inside the connecting ring (602), and a mounting ring (604) being connected to one end of the fixing block (603) away from the connecting ring (602), a non-woven bag (605) being arranged on one side of the fixing block (603) outside the mounting ring (604), a mounting hole (606) being opened inside the connecting block (601), a connecting frame (607) being passed through the inner wall of the mounting ring (604), and a high-density filter net (608) being embedded inside the connecting frame (607).

2. The device for preventing liquid inhalation of a turbine vacuum pump according to claim 1, characterized in that: The first gas delivery pipe (3) is in communication with the second gas delivery pipe (5) via the sleeve (4), and the sleeve (4) and the second gas delivery pipe (5) are threadedly connected.

3. The device for preventing liquid inhalation of a turbine vacuum pump according to claim 1, characterized in that: The connecting ring (602) is threadedly connected to the first gas delivery pipe (3), and the first gas delivery pipe (3) is tightly fitted to the connecting block (601).

4. The device for preventing liquid inhalation of a turbine vacuum pump according to claim 1, characterized in that: The top end of the connecting frame (607) is connected to a fixing cylinder (7), and a blocking mechanism (8) is provided above the fixing cylinder (7).

5. The device for preventing liquid inhalation of a turbine vacuum pump according to claim 4, characterized in that: The blocking mechanism (8) comprises a first ball bearing (801), the first ball bearing (801) being embedded in the top end of the fixing tube (7), and a connecting rod (802) extending from the interior of the first ball bearing (801), a second ball bearing (803) being sleeved on the top end of the connecting rod (802), and a mounting rod (804) being connected to the top of the second ball bearing (803).

6. The device for preventing liquid inhalation of a turbine vacuum pump according to claim 5, characterized in that: The blocking mechanism (8) further comprises a fan blade (805), wherein the fan blade (805) is fixed to the outer wall of the connecting rod (802), and a hydrophobic membrane (806) is embedded inside the fan blade (805).

7. The device for preventing liquid inhalation of a turbine vacuum pump according to claim 5, characterized in that: The fixing cylinder (7) forms a rotating structure with the connecting rod (802) through the first ball bearing (801), and the connecting rod (802) forms a rotating structure with the installation rod (804) through the second ball bearing (803).

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