A mechanical vacuum level control valve

Abstract

The present invention discloses a mechanical vacuum level control valve, comprising: a fixing part, comprising a base for fixed installation and a guide tube vertically arranged on the base; a valve body, arranged at the top of the guide tube, the valve body is provided with a working hole, a negative pressure hole and an emptying hole that are interconnected, the working hole, the negative pressure hole and the emptying hole are connected through a connecting cavity, a magnetic bead is movably arranged in the connecting cavity, the negative pressure hole is vertically arranged, and the emptying hole is connected to the inside of the guide tube; and a trigger part, comprising a trigger component and a floating component arranged at the bottom of the trigger component, the trigger component is movably arranged in the guide tube along the axial direction of the guide tube, the bottom end of the trigger component slides out from the base, a magnetic block is arranged at the top of the trigger component, and the magnetic block is coaxially arranged with the emptying hole. The present invention has a simple and reasonable structure, low manufacturing cost, no need for electricity, reliable performance and long service life.

Description

Technical Field

[0001] The invention relates to the technical field of control valves, and in particular to a mechanical vacuum liquid level control valve. Background Art

[0002] As people's environmental awareness continues to increase, the decentralized vacuum collection technology for domestic wastewater is being used more and more widely. The traditional solution for decentralized point vacuum collection is to set up a lift at the decentralized point, and the domestic wastewater flows into the lift through gravity flow. The vacuum interface valve is installed on the drainage pipe between the lift and the vacuum sewage tank. The lift is equipped with a liquid level sensor. After the liquid level sensor detects a high liquid level, the controller controls the three-way solenoid valve to open the vacuum interface valve, and the wastewater in the lift is sucked by vacuum to the vacuum sewage tank for storage. This solution requires laying cables, which is costly. In addition, if the decentralized points are too far apart, the voltage will attenuate, affecting the stability of the entire system. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a mechanical vacuum liquid level control valve, which has a simple and reasonable structure, low manufacturing cost, no need for electricity, reliable performance and long service life.

[0004] The present invention solves the above technical problems by the following technical means:

[0005] A mechanical vacuum liquid level control valve, comprising:

[0006] The fixing part comprises a base for fixed installation and a guide tube vertically arranged on the base;

[0007] a valve body, arranged at the top end of the guide tube, the valve body being provided with a working hole, a negative pressure hole and an emptying hole which are interconnected, the working hole, the negative pressure hole and the emptying hole being connected through a connecting cavity, a magnetic bead being movably arranged in the connecting cavity, the negative pressure hole being vertically arranged, and the emptying hole being connected to the inside of the guide tube; and

[0008] The trigger part includes a trigger component and a floating component arranged on the bottom of the trigger component. The trigger component is axially movable in the guide tube along the guide tube. The bottom end of the trigger component slides out from the base. A magnetic block is arranged on the top of the trigger component. The magnetic block is coaxially arranged with the emptying hole.

[0009] Furthermore, a magnetic ring concentric with the negative pressure hole is provided on the top of the connecting cavity.

[0010] Furthermore, a sealing ring concentric with the negative pressure hole is provided at the top of the connecting cavity.

[0011] Furthermore, the trigger assembly includes a sliding tube and a sliding rod slidably inserted in the sliding tube, both ends of the sliding tube are sealed, the sliding tube is slidably installed in the guide tube, the sliding rod slides out from the bottom end of the sliding tube, passes through the base and is connected to the floating assembly, and the magnetic block is installed at the top of the sliding tube.

[0012] Furthermore, the top end of the sliding rod is screwed to a limiting nut.

[0013] Furthermore, an operating hole is provided on the sliding tube.

[0014] Furthermore, a sealing plate is provided at the top end of the guide tube, and the drain hole is concentrically provided on the sealing plate.

[0015] Furthermore, the working hole is horizontally opened on the valve body.

[0016] Furthermore, the floating component is a floating ball.

[0017] Furthermore, the base is in a truncated cone shape, and the interior is a cavity structure with an open bottom end. The bottom edge of the base is horizontally folded outward to form a connecting ring, and threaded holes are evenly opened on the connecting ring.

[0018] The beneficial effects of the present invention are embodied in:

[0019] The control valve of the present invention has a simple and reasonable structure, low manufacturing cost, no electricity consumption, reliable performance and long service life. The control valve of the present invention adopts a mechanical structure, and the opening or closing of the vacuum interface valve is completely controlled by the water level in the lifter, and no longer needs to rely on the circuit control system. It is very convenient to install and use, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a structural schematic diagram of a mechanical vacuum liquid level control valve of the present invention;

[0022] Figure 2 The cross-sectional structure of a mechanical vacuum level control valve of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 3 The cross-sectional structure of a mechanical vacuum level control valve of the present invention is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0024] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0025] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0026] like Figure 1-Figure 3 As shown, a mechanical vacuum level control valve provided in this embodiment comprises: a fixing part, comprising a base 15 for fixed installation and a guide tube 11 vertically arranged on the base 15; a valve body 5, arranged at the top of the guide tube 11, and provided with a working hole 3, a negative pressure hole 1 and an emptying hole 8 which are interconnected, the working hole 3, the negative pressure hole 1 and the emptying hole 8 are connected through a connecting cavity, a magnetic bead 7 is movably arranged in the connecting cavity, the negative pressure hole 1 is vertically arranged, and the emptying hole 8 is connected with the inside of the guide tube 11; and a triggering part, comprising a triggering assembly and a floating assembly 14 arranged at the bottom of the triggering assembly, the triggering assembly is movably arranged in the guide tube 11 along the axial direction of the guide tube 11, the bottom end of the triggering assembly slides out from the base 15, and a magnetic block 9 is arranged at the top of the triggering assembly, and the magnetic block 9 is coaxially arranged with the emptying hole 8. The working hole 3 is horizontally opened on the valve body 5.

[0027] When in use, the control valve is installed on the lifter, the floating assembly 14 is arranged in the lifter, the working hole 3 is connected to the vacuum interface valve through a pipeline, the negative pressure hole 1 is connected to an external vacuum source, and the exhaust hole 8 is connected to the outside atmosphere.

[0028] Furthermore, a magnetic ring 2 concentric with the negative pressure hole 1 is provided at the top of the connection chamber. A sealing ring 6 concentric with the negative pressure hole 1 is provided at the top of the connection chamber, and the sealing ring 6 is provided below the magnetic ring 2, so that the magnetic beads 7 have better sealing performance when blocking the negative pressure hole 1. The magnetic force between the magnetic ring 2 and the magnetic beads 7 can ensure that when the power of the vacuum source is unstable, the sum of the suction force of the negative pressure hole 1 on the magnetic beads 7 and the magnetic force between the magnetic beads 7 and the magnetic ring 2 is greater than the gravity of the magnetic beads 7, so that the magnetic beads 7 move up and block the sealing ring 6. At this time, the working hole 3 is connected with the emptying hole 8, and the vacuum interface valve is closed.

[0029] Further, the trigger assembly includes a sliding tube 10 and a sliding rod 13 slidably inserted in the sliding tube 10. Both ends of the sliding tube 10 are sealed. The sliding tube 10 is slidably installed in the guide tube 11. The sliding rod 13 slides out from the bottom end of the sliding tube 10, passes through the base 15, and is connected to the floating assembly 14. The magnetic block 9 is installed at the top of the sliding tube 10. The top of the sliding rod 13 is screwed with a limited position nut 12. Through the cooperation of the sliding tube 10 and the sliding rod 13, the trigger stroke of the trigger assembly can be adjusted, thereby adjusting the liquid level difference between the high liquid level and the low liquid level. After the sliding tube 10 rises and the magnet 9 is pressed against the emptying hole 8, the sum of the magnetic force between the magnet 9 and the magnetic bead 7 plus the vacuum suction between the magnet 9 and the emptying hole 8 is greater than the sum of the gravity of the sliding tube 10 and the gravity of the magnet 9.

[0030] An operating hole is provided on the sliding tube 10 to facilitate installation of the limiting nut 12 on the sliding rod 13 during assembly.

[0031] Specifically, a sealing plate 4 is provided at the top of the guide tube 11, and the drain hole 8 is concentrically opened on the sealing plate 4. The floating component 14 is a floating ball, and can also be other objects that can float on the water surface, which is not limited here.

[0032] The base 15 is in a truncated cone shape, and the interior is a cavity structure with an open bottom. The bottom edge of the base 15 is horizontally folded outward to form a connecting ring, and threaded holes are evenly opened on the connecting ring. The base 15 is connected to the lifter by bolts passing through the threaded holes.

[0033] Working principle:

[0034] The control valve of the present invention is installed on the lifter by bolts, the floating assembly 14 is arranged in the lifter, the working hole 3 on the valve body is connected to the vacuum interface valve, the negative pressure hole 1 is connected to the vacuum source, and the exhaust hole 8 is connected to the outside atmosphere. Figure 2 As shown, when the waste water in the lifter is at a low liquid level, under the action of gravity, the slide rod 13 drives the slide tube 10 to be at the bottom of the guide tube 11, and the magnet 9 is away from the magnetic bead 7, so that the attraction of the magnet 9 on the magnetic bead 7 is extremely small and can be ignored. At this time, the sum of the suction force of the negative pressure hole 1 and the magnetic force of the magnetic ring 2 on the magnetic bead 7 is greater than the gravity of the magnetic bead 7, so that the magnetic bead 7 moves up, blocks the sealing ring 6, and the circuit between the working hole 3 and the negative pressure hole 1 is disconnected, the working hole 3 and the emptying hole 8 are connected, and the vacuum interface valve is closed.

[0035] When waste water flows into the lifter under the action of gravity and the liquid level in the lifter gradually rises, since the weight of the trigger assembly is less than the buoyancy of the float 14, the float 14 and the slide rod 13 first move straight up under the action of buoyancy, and then the limit nut 12 on the top of the slide rod 13 contacts the top of the slide tube 10, and the float 14 lifts the slide tube 10 to continue to move straight up until the magnet 9 set on the slide tube 10 contacts the sealing plate 4 pressed between the valve body 5 and the guide tube 11, and blocks the drain hole 8 on the sealing plate 4. Figure 3 At this time, the sum of the magnetic force between the magnet 9 and the magnetic bead 7 and the gravity of the magnetic bead 7 is greater than the sum of the magnetic force between the magnetic bead 7 and the magnetic ring 2 and the vacuum suction force of the negative pressure hole 1 on the magnetic bead 7, so the magnetic bead 7 moves downward and clings to the sealing plate 4, the working port 3 is connected to the negative pressure hole 1, the vacuum interface valve is opened, and the sewage in the lifter is sucked into the vacuum sewage tank.

[0036] As the sewage in the lift is pumped into the vacuum sewage tank, the liquid level in the lift gradually decreases. At this time, the sum of the magnetic force between the magnet 9 and the magnetic bead 7 plus the vacuum suction force between the magnet 9 and the emptying hole 8 is greater than the sum of the gravity of the sliding tube 10 and the gravity of the magnet 9, so the float 14 and the sliding rod 13 first move straight down under the action of gravity until the limit nut 12 at the top of the sliding rod 13 contacts the bottom of the sliding tube 10. At this time, the gravity of the entire trigger part is greater than the sum of the magnetic force between the magnet 9 and the magnetic bead 7 plus the vacuum suction force between the magnet 9 and the emptying hole 8, so the entire trigger part moves downward, the magnet 9 leaves the sealing plate 4, and the magnetic force between the magnet 9 and the magnetic bead 7 gradually decreases. When the sum of the suction force of the negative pressure hole 1 and the magnetic force of the magnetic ring 2 on the magnetic bead 7 is greater than the sum of the gravity of the magnetic bead 7 and the magnetic force between the magnet 9 and the magnetic bead 7, the magnetic bead 7 gradually moves upward until it blocks the sealing ring 6. At this time, the circuit between the working hole 3 and the negative pressure hole 1 is broken, the working hole 3 and the emptying hole 8 are connected, and the vacuum interface valve is closed.

[0037] In summary, the control valve of the present invention has a simple and reasonable structure, low manufacturing cost, no need for electricity, reliable performance, and long service life. The control valve of the present invention adopts a mechanical structure, and the opening or closing of the vacuum interface valve is completely controlled by the water level in the lifter, and no longer needs to rely on the circuit control system. It is very convenient to install and use, and has high reliability.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. 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, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A mechanical vacuum level control valve, characterized in that: include: A fixing part, comprising a base (15) for fixed installation and a guide tube (11) vertically arranged on the base (15); A valve body (5) is arranged at the top end of the guide tube (11), the valve body (5) is provided with a working hole (3), a negative pressure hole (1) and an emptying hole (8) which are connected to each other, the working hole (3), the negative pressure hole (1) and the emptying hole (8) are connected to each other through a connecting cavity, a magnetic bead (7) is movably arranged in the connecting cavity, the negative pressure hole (1) is arranged vertically, and the emptying hole (8) is connected to the inside of the guide tube (11); and A triggering part, comprising a triggering component and a floating component (14) arranged on the bottom of the triggering component, the triggering component being movably arranged in the guide tube (11) along the axial direction of the guide tube (11), the bottom end of the triggering component slidingly passing through the base (15), the top end of the triggering component being provided with a magnetic block (9), the magnetic block (9) being coaxially arranged with the drain hole (8); A magnetic ring (2) concentric with the negative pressure hole (1) is arranged at the top of the connection cavity; A sealing ring (6) is arranged at the top of the connecting cavity and is concentric with the negative pressure hole (1); The trigger assembly comprises a sliding tube (10) and a sliding rod (13) slidably inserted in the sliding tube (10), both ends of the sliding tube (10) are sealed, the sliding tube (10) is slidably installed in the guide tube (11), the sliding rod (13) slides out from the bottom end of the sliding tube (10), passes through the base (15), and is connected to the floating assembly (14), and the magnetic block (9) is installed at the top end of the sliding tube (10); A sealing plate (4) is provided at the top end of the guide tube (11), and the drain hole (8) is concentrically opened on the sealing plate (4).

2. A mechanical vacuum level control valve according to claim 1, characterized in that: The top end of the sliding rod (13) is threadedly connected to a limiting nut (12).

3. A mechanical vacuum level control valve according to claim 2, characterized in that: The sliding tube (10) is provided with an operation hole.

4. A mechanical vacuum level control valve according to claim 1, characterized in that: The working hole (3) is horizontally opened on the valve body (5).

5. The mechanical vacuum level control valve according to claim 1, characterized in that: The floating component (14) is a floating ball.

6. A mechanical vacuum level control valve according to claim 1, characterized in that: The base (15) is in the shape of a truncated cone, and has a hollow structure with an open bottom end. The bottom edge of the base (15) is horizontally folded outward to form a connecting ring, and threaded holes are evenly arranged on the connecting ring.

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