Odor-resistant ventilation valve with anti-overflow function and sewage lifting device

Abstract

The utility model relates to the technical field of valves, and discloses a deodorization ventilation valve with an anti-overflow function and a sewage lifting device. The deodorization ventilation valve comprises a valve body and a valve element, the valve body is provided with a first top plate and a middle partition plate, the portion, between the first top plate and the middle partition plate, of the valve body is filled with activated carbon, the valve element is arranged in the valve body in a sliding mode and located below the middle partition plate, and a gas channel is arranged between the valve element and the valve body. The odor-resistant ventilation valve is arranged on the water collecting tank of the sewage lifting device, when gas in the water collecting tank passes through the valve body, harmful substances in the gas are adsorbed and removed by the activated carbon, and peculiar smell and odor of the gas are removed; when the sewage pump cannot work, along with rising of the water level, the valve element moves upwards under the action of buoyancy and blocks the ventilation hole when abutting against the middle partition plate, and sewage cannot overflow from the deodorization ventilation valve; the deodorization ventilation valve integrates ventilation, deodorization and overflow prevention, and can be applied to various occasions such as sewage lifting devices, sewage pools and septic tanks.

Description

TECHNICAL FIELD

[0001] The utility model embodiment relates to valve technical field, concretely relates to a kind of deodorization breather valve with anti-overflow function and sewage lifting device. BACKGROUND

[0002] Sewage lifting device (sewage lifting device) is by sewage pump, water collecting tank and related pipe fittings valve composition a set of system, for lifting and conveying below sewer or far from municipal pipe network waste sewage.

[0003] Many places of domestic sewage is flowed into to be buried in underground water collecting tank (sewage tank) by drain pipeline, and sewage pump is arranged in water collecting tank, connecting pipeline and control mechanism, and the sewage pump is used to lift and pump out the sewage in water collecting tank (sewage tank), so that sewage is merged into city sewage pipe network, and then transported to sewage treatment center for centralized treatment.Water collecting tank of sewage lifting device is closed structure, and water collecting tank is provided with breather valve, water collecting tank is communicated with external atmosphere by breather valve, and gas in water collecting tank can be discharged through breather valve, to ensure the smooth entry and discharge of sewage.

[0004] The inventor of the present application finds that, due to the harmful substances contained in the sewage, the gas in the water collecting tank (sewage tank) has an odor (odor) when discharged, causing environmental pollution; and when the sewage pump fails, the sewage in the water collecting tank will overflow from the breather valve as the sewage enters, which not only pollutes the site equipment, but also brings inconvenience to the subsequent fault handling. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of deodorization breather valve with anti-overflow function and sewage lifting device to solve the problems in the above background.

[0006] The utility model embodiment provides a kind of deodorization breather valve with anti-overflow function, comprising: valve body and valve core;

[0007] The valve body is provided with fluid passage passing through;

[0008] The valve body is provided with first top plate and middle baffle, and the first top plate and the middle baffle are both provided with breather hole for gas passing;

[0009] The valve body is filled with activated carbon in the fluid passage between the first top plate and the middle baffle, for removing odor in gas;

[0010] The valve core is slidably arranged in the valve body, below the middle baffle, and a first gas passage is provided between the valve core and the valve body, and the valve core is used to abut against the middle baffle when sliding upward, to close the breather hole of the middle baffle.

[0011] Based on the above scheme can be known, the utility model discloses a prevent the stink and ventilate valve with anti -overflow function, through setting valve body and valve core, valve body is equipped with first roof and middle baffle, and first roof and middle baffle all are equipped with ventilating hole, and the ventilating hole of first roof and middle baffle is filled with activated carbon between first roof and middle baffle, and valve core is slidably arranged in valve body, and first gas passage is equipped between valve core and valve body, and valve core is closed the ventilating hole of middle baffle when sliding upwards.The utility model discloses a prevent the stink and ventilate valve with anti -overflow function, set up in the water collecting tank of sewage lifting device, make the water collecting tank with atmosphere through first gas passage and the ventilating hole of first roof and middle baffle, and the activated carbon in valve body removes the harmful material in gas when the gas in water collecting tank passes through valve body, thereby removing the peculiar smell and stench in gas, purify the environment, when the sewage pump can not work due to the fault, along with the water level rising in water collecting tank, valve core moves upwards under the action of buoyancy, when valve core and middle baffle abut, the ventilating hole of middle baffle is blocked, make valve body be closed, and the sewage in water collecting tank can not overflow from prevent the stink and ventilate valve, and the subsequent processing of the fault is convenient.Prevent the stink and ventilate valve set ventilating, deodorization and anti -overflow in one, can be applied to sewage lifting device, sewage pool, septic tank and a variety of occasions.

[0012] In an embodiment, the side wall of the valve body is provided with a sliding groove.

[0013] The valve core is provided with a second top plate, and a sliding plate is arranged on the circumferential outer wall of the valve core.

[0014] A gap is left between the outer wall of the valve core and the inner wall of the valve body to form the first gas passage.

[0015] In an embodiment, the valve body is in the shape of a cylinder or a cone.

[0016] In an embodiment, the second top plate is provided with a rubber sealing gasket.

[0017] The bottom of the middle baffle is provided with a sealing protruding ring, and the ventilating hole of the middle baffle is arranged in the sealing protruding ring.

[0018] The bottom end of the sealing protruding ring is in the shape of a V for embedding into the rubber sealing gasket.

[0019] In an embodiment, the valve core is provided with foam cotton or foam.

[0020] In an embodiment, the valve core is provided with a fixing rod and a fixing nut.

[0021] The middle baffle is provided with a circular groove for embedding the top end of the fixing rod.

[0022] The bottom end of the fixing rod is provided with external threads.

[0023] The foam cotton is arranged on the fixing rod, and the fixing nut is engaged on the fixing rod.

[0024] In an embodiment, the bottom end of the valve body is provided with an assembly protruding ring.

[0025] A limiting step is formed between the assembly protruding ring and the valve body, and the limiting step is used to abut against the valve core.

[0026] In an embodiment, the assembly protruding ring is provided with a fixing plate, and the fixing plate is provided with a filter hole.

[0027] In an embodiment, a dustproof cover is further included.

[0028] An insertion protruding block is arranged on the outer wall of the valve body.

[0029] The dustproof cover is provided with an insertion slot and a limiting protruding plate.

[0030] The insertion slot is used to embed the insertion protruding block, and a first gap is left between the outer wall of the valve body and the inner wall of the dustproof cover.

[0031] A second gap is left between two adjacent limiting protruding plates, and the limiting protruding plate is used to abut against the first top plate.

[0032] The first gap and the second gap form a second gas passage.

[0033] The utility model embodiment further provides a sewage lifting device, include: sewage lifting device body, and with the anti-odor breather valve with the anti-overflow function in any one design above;

[0034] The anti-odor breather valve is arranged on the water collecting tank of the sewage lifting device body. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without paying creative labor.

[0036] Figure 1 It is the schematic view of the anti-odor breather valve with the anti-overflow function in the embodiment one of the utility model;

[0037] Figure 2 It is the sectional view schematic diagram of the anti-odor breather valve in the embodiment one of the utility model;

[0038] Figure 3 It is the schematic view of the valve body in the embodiment one of the utility model;

[0039] Figure 4 It is the internal schematic view of the valve body in the embodiment one of the utility model;

[0040] Figure 5 It is the schematic view of the partition plate in the embodiment one of the utility model;

[0041] Figure 6 It is the schematic view of the valve core in the embodiment one of the utility model;

[0042] Figure 7 It is the schematic view of the dustproof cover in the embodiment one of the utility model.

[0043] Mark in drawing:

[0044] 1, valve body;101, air hole;11, first top plate;12, partition plate;121, sealing convex ring;122, circular groove;13, sliding groove;14, assembly convex ring;15, limiting step;16, fixed plate;161, filter hole;17, plug-in lugs;2, valve core;21, second top plate;22, sliding plate;23, rubber sealing pad;24, foam cotton;25, fixed rod;26, fixed nut;3, dustproof cover;31, plug-in slot;32, limiting convex plate. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the protection scope of the utility model.

[0046] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model.

[0047] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, also can be integrated;Can be mechanical connection, also can be electric connection, also can be communication connection;Can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements or the interaction of two elements, unless another definite limitation.For the ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0048] The technical scheme of the utility model will be described in detail below with specific examples.The following several specific examples can be combined, and the same or similar concepts or processes can not be described in some examples.

[0049] As described in the background of the application, the water collecting tank of the sewage lifting device is a closed structure, and a breather valve is arranged on the water collecting tank to communicate the water collecting tank with the external atmosphere, so as to ensure the smooth entry and discharge of sewage.

[0050] The inventors of the application find that the gas in the water collecting tank has an odor when discharged due to the harmful substances in the sewage, causing environmental pollution;And when the sewage pump fails, the sewage in the water collecting tank will overflow from the breather valve with the entry of sewage, polluting the site equipment and making subsequent fault handling difficult.

[0051] To solve the above problems, the inventors of the application propose the technical scheme of the application, and the specific embodiments are as follows:

[0052] Figure 1 FIG. 1 is a schematic view of the anti-odor breather valve with anti-overflow function according to the utility model embodiment one, Figure 2 FIG. 2 is a sectional view of the anti-odor breather valve according to the utility model embodiment one, Figure 3 FIG. 3 is a schematic view of the valve body according to the utility model embodiment one, Figure 4 FIG. 4 is a schematic view of the inside of the valve body according to the utility model embodiment one, Figure 5 FIG. 5 is a schematic view of the partition plate according to the utility model embodiment one, Figure 6 FIG. 6 is a schematic view of the valve core according to the utility model embodiment one, Figure 7 FIG. 7 is a schematic view of the dust cover according to the utility model embodiment one.

[0053] As shown in FIG. Figures 1 to 7 The anti-odor breather valve with anti-overflow function according to the embodiment includes a valve body 1 and a valve core 2.

[0054] The valve body 1 is provided with a fluid passage penetrating up and down in the axial direction.

[0055] The upper end of the valve body 1 is square, and the middle and lower ends of the valve body 1 are circular.

[0056] The first top plate 11 is arranged on the top of the valve body 1, and the middle partition plate 12 is arranged on the middle of the valve body 1 in the cross section. The first top plate 11 and the middle partition plate 12 of the valve body 1 are both provided with the air permeable holes 101, forming an air permeable grid plate, so that the gas can pass through the fluid channel of the valve body 1.

[0057] The fluid channel between the first top plate 11 and the middle partition plate 12 of the valve body 1 is filled with large-particle deodorizing activated carbon (not shown in the figure), and the harmful substances in the gas are removed by adsorption of the activated carbon, so that the odor of the gas can be removed.

[0058] The valve core 2 is arranged on the valve body 1 and can slide up and down, and is located in the fluid channel of the valve body 1 and below the middle partition plate 12. The first gas channel is arranged between the valve core 2 and the valve body 1 for the gas to pass through. When the valve core 2 moves upward and contacts and abuts against the middle partition plate 12 in the valve body 1, all the air permeable holes 101 on the middle partition plate 12 are blocked, so that the fluid channel of the valve body 1 is closed, and the gas and liquid cannot pass through the valve body 1 at this time.

[0059] In the embodiment, the deodorizing air permeable valve is arranged on the sealed water collecting tank of the sewage lifting device, the water collecting tank is connected with the external atmosphere through the deodorizing air permeable valve, so that the sewage can smoothly enter and discharge the water collecting tank, and the harmful substances in the gas are removed by adsorption of the activated carbon in the valve body, so that the discharged gas is purified and the odor of the gas is removed.

[0060] When the sewage lifting device cannot discharge the sewage due to the failure of the sewage pump and other reasons, as the water level in the water collecting tank rises, the valve core moves upward under the action of the buoyancy, and when the water in the water collecting tank is full, the valve core contacts and abuts against the middle partition plate in the valve body, blocking the air permeable holes of the middle partition plate. At this time, the valve body is closed, and the sewage in the water collecting tank will not overflow from the deodorizing air permeable valve; and as the water pressure in the water collecting tank increases, the buoyancy acting on the valve core increases, and the valve core and the middle partition plate are more tightly contacted; at the same time, the sewage is blocked in the water inlet pipeline and cannot enter the water collecting tank.

[0061] It can be found from the above that the anti-odor and breathable valve with the anti-overflow function has the valve body and the valve core, the valve body is provided with the first top plate and the middle partition plate, the first top plate and the middle partition plate are both provided with the breathable hole, the activated carbon is filled between the first top plate and the middle partition plate, the valve core is slidably arranged in the valve body, the first gas passage is arranged between the valve core and the valve body, and the valve core closes the breathable hole of the middle partition plate when sliding upward. The anti-odor and breathable valve with the anti-overflow function is arranged on the water collecting tank of the sewage lifting device, the water collecting tank is communicated with the atmosphere through the first gas passage and the breathable holes of the first top plate and the middle partition plate, the activated carbon in the valve body adsorbs and removes harmful substances in the gas when the gas in the water collecting tank passes through the valve body, thereby removing the odor and the odor in the gas and purifying the environment; when the sewage pump cannot work due to failure, the valve core moves upward under the action of the buoyancy as the water level in the water collecting tank rises, the valve core abuts against the middle partition plate, the breathable hole of the middle partition plate is blocked, the valve body is closed, and the sewage in the water collecting tank will not overflow from the anti-odor and breathable valve, thereby facilitating the subsequent treatment of the failure. The anti-odor and breathable valve integrates the functions of breathability, deodorization and anti-overflow, and can be applied to various occasions such as the sewage lifting device, the sewage tank and the septic tank.

[0062] Optionally, the anti-odor and breathable valve with the anti-overflow function in the embodiment is provided with a plurality of sliding grooves 13 uniformly arranged on the inner side wall of the valve body 1.

[0063] The top of the valve core 2 is provided with a second top plate 21, the circumferential outer wall of the valve core 2 is provided with a plurality of sliding plates 22, and the plurality of sliding plates 22 of the valve core 2 are slidably inserted into the plurality of sliding grooves 13 of the valve body 1. Under the action of the buoyancy, the valve core 2 can slide upward along the sliding grooves of the valve body 1 to contact and abut against the middle partition plate 12 in the valve body 1 to block the breathable hole of the middle partition plate 12.

[0064] The width of the sliding plate 22 of the valve core 2 is greater than the depth of the sliding groove 13 of the valve body 1, and the first gas passage is formed between the outer wall of the valve core 2 and the inner wall of the valve body 1 to supply the fluid such as gas.

[0065] Further, the anti-odor and breathable valve with the anti-overflow function in the embodiment can be a cylindrical barrel or a conical barrel with a large upper part and a small lower part, and the shape of the bottom end of the valve body 1 is matched with the valve core 2. When the water level rises, the valve core 2 can slide upward along the sliding grooves of the valve body 1 under the action of the buoyancy to contact and abut against the middle partition plate 12 of the valve body 1 to block the breathable hole of the middle partition plate 12 and seal the valve body. The valve core is in the form of a circular ring or a conical barrel, normally downward under the action of its own gravity, and more easily upward to block the breathable hole of the middle partition plate under the action of the buoyancy when the water level rises.

[0066] Further, the anti-odor and breathable valve with the anti-overflow function in the embodiment is provided with the rubber sealing pad 23 laid on the top surface of the second top plate 21 of the valve core 2.

[0067] The bottom of the middle partition plate 12 of the valve body 1 is provided with a sealing convex ring 121, and the bottom end of the sealing convex ring 121 is in a V-shaped cross section. The air permeable hole 101 on the middle partition plate 12 is arranged in the area surrounded by the sealing convex ring 121.

[0068] When the valve core 2 moves upward along the sliding groove 13 and abuts against the middle partition plate 12, the sealing convex ring 121 of the middle partition plate 12 is embedded into the rubber sealing gasket 23 of the valve core 2, so that the valve core 2 and the middle partition plate 12 are more sealed, and the overflow of sewage is prevented.

[0069] Further, in the deodorizing air permeable valve with the anti-overflow function in the embodiment, the valve core 2 is provided with foam cotton (or foam) 24 in the circular ring body. When the water level of the water collecting tank rises, the foam cotton 24 makes the buoyancy of the valve core 2 greater, so that the valve core 2 rises quickly with the rising of the water level, and finally increases the abutting force between the valve core 2 and the middle partition plate 12, thereby increasing the sealing property between the valve core 2 and the middle partition plate 12.

[0070] Further, in the deodorizing air permeable valve with the anti-overflow function in the embodiment, the valve core 2 is further provided with a fixing rod 25 and a fixing nut 26.

[0071] The fixing rod 25 is arranged at the center of the second top plate 21 of the valve core 2, and the top end and the bottom end of the fixing rod 25 extend upward and downward of the second top plate 21, respectively.

[0072] The bottom of the middle partition plate 12 is provided with a circular recess 122 for embedding the top end of the fixing rod 25.

[0073] The bottom end of the fixing rod 25 is provided with external threads.

[0074] The foam cotton 24 is arranged on the fixing rod 25 of the valve core 2, and the fixing nut 26 is engaged with the bottom end of the fixing rod 25, so that the foam cotton 24 is fixed on the fixing rod 25 and is prevented from falling off from the valve core 2.

[0075] Further, in the deodorizing air permeable valve with the anti-overflow function in the embodiment, the bottom end of the valve body 1 is provided with an assembly convex ring 14.

[0076] The outer diameter of the assembly convex ring 14 is smaller than the outer diameter of the valve body 1, and a limiting step 15 is formed between the assembly convex ring 14 and the valve body 1.

[0077] In the embodiment, the bottom end of the valve core 2 abuts against the limiting step 15 in the normal use of the deodorizing air permeable valve, so that the valve core 2 is prevented from falling off from the valve body 1; when the water level rises, the valve core 2 moves upward along the sliding groove 13 and abuts against the middle partition plate 12 of the valve body 1, so that the overflow of sewage is prevented; and the assembly convex ring 14 facilitates the installation and fixation of the deodorizing air permeable valve on the water collecting tank.

[0078] Further, the anti-odor and breathable valve with the anti-overflow function in the embodiment is provided with the fixed plate 16 in the cross section of the assembling convex ring 14, and the fixed plate 16 is provided with the filter hole 161 to prevent sundries in sewage from entering into the valve body 1.

[0079] Further, the anti-odor and breathable valve with the anti-overflow function in the embodiment further comprises the dustproof cover 3.

[0080] The dustproof cover 3 is arranged on the valve body 1 and located at the top end of the valve body 1.

[0081] The outer wall of the top end of the valve body 1 is provided with a plurality of inserting convex blocks 17.

[0082] The inner wall of the dustproof cover 3 is provided with a plurality of inserting grooves 31, and the inserting convex blocks 17 of the valve body 1 are inserted into the inserting grooves 31 of the dustproof cover 3 to fix the dustproof cover 3 on the valve body 1.

[0083] The bottom surface of the dustproof cover 3 is provided with a plurality of limiting convex plates 32, and a second gap is left between two adjacent limiting convex plates 32.

[0084] The first gap and the second gap form a second gas channel to connect the fluid channel of the valve body 1 with the external atmosphere.

[0085] Embodiment two

[0086] The utility model also provides a sewage lifting device.

[0087] The sewage lifting device comprises a sewage lifting device body and the anti-odor and breathable valve with the anti-overflow function in the above embodiment.

[0088] The water collecting tank of the sewage lifting device body is communicated with the sewage source through the water inlet pipeline, and the anti-odor and breathable valve is arranged on the water collecting tank of the sewage lifting device body.

[0089] In the embodiment, when the sewage lifting device is used normally, the water collecting tank is communicated with the external atmosphere through the anti-odor and breathable valve, so that the sewage can smoothly enter and exit the water collecting tank, and when the gas in the water collecting tank is discharged, the anti-odor and breathable valve adsorbs and purifies the waste gas to remove the peculiar smell of the gas.

[0090] When the sewage lifting device cannot discharge sewage due to sewage pump failure and the like, with the rising of the water level in the water collecting tank, the valve core moves upward under the action of the buoyancy, when the water in the water collecting tank is full, the valve core abuts against the middle partition plate in the valve body, and the air permeable hole of the middle partition plate is blocked, at this time, the valve body channel is closed, and the sewage in the water collecting tank cannot overflow from the deodorizing air permeable valve, and with the increase of the water pressure in the water collecting tank, the buoyancy of the valve core increases, and the abutment of the valve core and the middle partition plate is more closely.

[0091] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium.

[0092] Moreover, the first feature can be directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in terms of horizontal height. The first feature can be directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in terms of horizontal height.

[0093] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0094] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part 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 application.

Claims

1. An odor-proof and breathable valve with anti-overflow function, characterized in that, include: Valve body and valve core; The valve body is provided with a through fluid channel; The valve body is provided with a first top plate and a middle partition plate, and both the first top plate and the middle partition plate are provided with vent holes for gas to pass through; The valve body is filled with activated carbon in the fluid channel between the first top plate and the middle partition plate to remove odors from the gas. The valve core is slidably disposed in the valve body, located below the partition plate. A first gas passage is provided between the valve core and the valve body. When the valve core slides upward, it is used to abut against the partition plate to close the vent hole of the partition plate.

2. The odor-proof and breathable valve with anti-overflow function according to claim 1, characterized in that, The valve body has a sliding groove on its side wall; The valve core is provided with a second top plate, and a sliding plate is provided on the outer circumference of the valve core. The sliding plate is slidably inserted into the sliding groove. A gap is left between the outer wall of the valve core and the inner wall of the valve body to form the first gas passage.

3. The odor-proof and breathable valve with anti-overflow function according to claim 2, characterized in that, The valve body is cylindrical or conical.

4. The odor-proof and breathable valve with anti-overflow function according to claim 2, characterized in that, The second top plate is covered with a rubber sealing gasket; The bottom of the partition plate is provided with a sealing protrusion ring, and the vent hole of the partition plate is located inside the sealing protrusion ring; The bottom cross-section of the sealing ring is V-shaped, which is used to embed it into the rubber sealing gasket.

5. The odor-proof and breathable valve with anti-overflow function according to claim 3, characterized in that, The valve core is equipped with foam cotton or foam.

6. The odor-proof and breathable valve with anti-overflow function according to claim 5, characterized in that, The valve core is equipped with a fixing rod and a fixing nut; The partition plate is provided with a circular groove for the top end of the fixing rod to be inserted; The bottom end of the fixing rod is provided with an external thread; The foam cotton is threaded onto the fixing rod, and the fixing nut is engaged with the fixing rod.

7. The odor-proof and breathable valve with anti-overflow function according to claim 2, characterized in that, The bottom end of the valve body is provided with an assembly protrusion ring; A limiting step is formed between the assembly protrusion ring and the valve body, and the limiting step is used to abut against the valve core.

8. The odor-proof and breathable valve with anti-overflow function according to claim 7, characterized in that, The assembly ring is provided with a fixing plate, and the fixing plate is provided with filter holes.

9. The odor-proof and breathable valve with anti-overflow function according to any one of claims 1 to 8, characterized in that, Also includes: Dust cover; The outer wall of the valve body is provided with a plug-in protrusion; The dust cover is provided with a slot and a limiting protrusion; The insertion slot is used for the insertion protrusion to be inserted, and a first gap is left between the outer wall of the valve body and the inner wall of the dust cover; A second gap is left between two adjacent limiting protrusions, and the limiting protrusions are used to abut against the first top plate; The first gap and the second gap form a second gas channel.

10. A sewage lifting device, characterized in that, include: The sewage lifting device body, and the odor-proof and breathable valve with anti-overflow function as described in any one of claims 1 to 9; The odor-proof and breathable valve is installed on the water collection tank of the sewage lifting device body.

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