Quick-release vacuum valve and vacuum drainage system

Abstract

The utility model relates to the technical field of pneumatic control valves, in particular to a quick release type vacuum valve and a vacuum drainage system, which comprise an upper casing, a lower casing and a valve plate seat, the valve plate seat is arranged between the upper casing and the lower casing, the lower end of the valve plate seat is positioned in the lower casing, and a quick release structure is arranged between the upper casing and the lower casing. The upper shell, the lower shell and the valve plate seat are locked together by the quick release structure; the lower shell is provided with a first supporting part and a second supporting part which are used for bearing the valve plate seat, the first supporting part and the second supporting part support the top and the bottom of the valve plate seat respectively, and a first rubber ring and a second rubber ring are arranged on the portions, making contact with the first supporting part and the second supporting part, of the valve plate seat respectively. According to the quick release type vacuum valve and the vacuum drainage system, a quick release structure is adopted, quick mounting and dismounting of the vacuum valve can be achieved, and the working efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic control valve technical field especially is related to a quick detach type vacuum valve and vacuum drainage system. BACKGROUND

[0002] The vacuum valve generally includes upper casing, lower casing, valve plate assembly etc., in production, need to combine together with the upper casing and lower casing, simultaneously with the valve plate assembly accurate positioning in the casing, in the prior art, generally adopt screw to lock together the upper and lower casing, reach the purpose of fixed valve plate assembly, this kind of lock pays way when installing and disassembling time -consuming and labor -intensive. SUMMARY

[0003] The utility model relates to a quick detach type vacuum valve and vacuum drainage system that solves the technical problems, adopts quick detach structure, can realize the quick installation and disassembly of vacuum valve, greatly improves work efficiency.

[0004] The utility model provides a quick detach type vacuum valve, including upper casing, lower casing and valve plate seat, the valve plate seat is located between the upper casing with the lower casing and its lower end is located in the lower casing, be equipped with quick detach structure between the upper casing with the lower casing, quick detach structure locks together the upper casing, the lower casing and the valve plate seat,

[0005] The lower casing is equipped with the first support part and the second support part of the valve plate seat, the first support part and the second support part support the top and bottom of the valve plate seat respectively, the part of the valve plate seat and the first support part, second support part contact is equipped with first rubber ring, second rubber ring respectively.

[0006] Further, the quick detach structure includes a clasp and a lock rod, the clasp includes two hingedly connected half rings, both ends of the two half rings away from the hinge point have a bayonet, one end of the lock rod is rotatably connected to the bayonet of one of the half rings, and the other end is rotatably connected to the bayonet of the other half ring.

[0007] Further, a valve port is also provided, which is located below the valve plate seat in the lower casing; a drive assembly is provided between the upper casing and the valve plate seat, which is fixedly connected to the leading end of the valve plate, and the drive assembly drives the valve plate to move back and forth to move the trailing end of the valve plate away from or close to the valve port, thereby achieving valve opening and closing.

[0008] Further, the upper casing is provided with a first gas interface, which is used to connect a vacuum air source to control the action of the drive assembly.

[0009] Further, the driving assembly comprises a rubber diaphragm and a spring, the rubber diaphragm is clamped between the upper shell and the lower shell, the upper shell and the lower shell are sealed and not communicated with each other by the rubber diaphragm, the rubber diaphragm is fixedly connected with the head end of the valve plate, and the spring is arranged between the rubber diaphragm and the upper shell.

[0010] When the rubber diaphragm is deformed and restored, the valve plate can be driven to move back and forth between the valve plate seat and the valve port; when the rubber diaphragm is deformed and displaced to the upper shell, the spring can be pressed and restored under the action force of the spring.

[0011] Further, the rubber diaphragm is fixedly connected with the valve plate through a tray, and the middle part of the tray is protruded to the upper shell.

[0012] Further, the driving assembly comprises a driving disc and a spring, the driving disc is fixedly connected with the head end of the valve plate, and the spring is arranged between the upper shell and the driving disc.

[0013] When the driving disc moves back and forth, the tail end of the valve plate can be driven to move back and forth between the valve plate seat and the valve port; when the driving disc is forced to be displaced to the upper shell, the spring can be pressed and moved to the lower shell under the action force of the spring.

[0014] Further, the inner side wall of the upper shell is sealingly connected with the driving disc through a sealing piece.

[0015] Further, the upper shell is internally provided with a circular inner cylinder, the inner cylinder is sealingly connected with the upper shell through a sealing piece, and the inner side wall of the inner cylinder is sealingly connected with the driving disc through a sealing piece.

[0016] Further, the middle part of the inner top wall of the upper shell is protruded to the lower shell.

[0017] The utility model also provides a vacuum drainage system, including above-mentioned vacuum valve, one end of vacuum valve is connected to sewage well through pipeline, and tail end is connected vacuum station through pipeline.

[0018] The utility model has the advantages of:

[0019] The utility model discloses a quick detach structure, and the upper shell, the lower shell and the valve plate seat are quickly assembled together and locked, so that the assembly efficiency is improved, and the assembly and disassembly are facilitated. The valve plate seat is accurately positioned in the lower shell through the first rubber ring and the second rubber ring, the vacuum valve is assembled without failure, and the assembly accuracy is high. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure diagram of the embodiment 1 of the utility model Figure One ;

[0021] Figure 2 is a structure diagram of the quick release structure of embodiment 1 of the utility model;

[0022] Figure 3 is a structure diagram of the quick release structure of embodiment 1 of the utility model; Figure One (close valve);

[0023] Figure 4 is a structure diagram of the quick release structure of embodiment 1 of the utility model; Figure Two (open valve);

[0024] Figure 5 is a structure diagram of the quick release structure of embodiment 2 of the utility model; Figure One (open valve);

[0025] Figure 6 is a structure diagram of the quick release structure of embodiment 2 of the utility model; Figure Two (close valve);

[0026] Figure 7 is a structure diagram of the quick release structure of embodiment 3 of the utility model; Figure One (close valve);

[0027] Figure 8 is a structure diagram of the quick release structure of embodiment 3 of the utility model; Figure Two (open valve);

[0028] In the figure:

[0029] Upper shell 11, lower shell 12, edge locking (111, 1111), first support part 121, first rubber ring 1211, second support part 122, second rubber ring 1222, quick release structure 13, holding ring 131, half ring (1311, 1312), locking rod 132, bayonet 1322, valve plate 14, valve plate seat A2, valve port A3, rubber diaphragm A4, first spring A5, driving disc B2, groove B21, first sealing ring B7, second spring B8, inner cylinder B9, second sealing ring B10, first gas interface P1, second gas interface P2. DETAILED DESCRIPTION

[0030] The technical solutions of the utility model will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] Embodiment 1:

[0032] As Figures 1-4As shown, a quick-release type vacuum valve includes an upper shell 11, a lower shell 12, and a valve plate seat A2, the valve plate seat is arranged between the upper shell and the lower shell and the lower end thereof is located in the lower shell, a quick-release structure 13 is arranged between the upper shell and the lower shell, the quick-release structure locks the upper shell, the lower shell and the valve plate seat together; the lower shell is provided with a first support part 121 and a second support part 122 for supporting the valve plate seat, the first support part and the second support part support the top and bottom of the valve plate seat respectively, the parts of the valve plate seat in contact with the first support part and the second support part are respectively provided with a first rubber ring 1211 and a second rubber ring 1222; in this embodiment, the upper shell, the lower shell and the valve plate seat are quickly assembled and locked together by the quick-release structure, the assembly efficiency is improved, and the valve plate seat is accurately positioned in the lower shell by the first rubber ring and the second rubber ring, realizing zero failure of vacuum valve assembly and high assembly accuracy.

[0033] Specifically, the valve plate seat A2 is generally in the shape of a bowl holder, when it is installed between the upper shell and the lower shell, the lower end is located in the lower shell, and the quick-release structure locks the upper shell, the lower shell and the valve plate seat together; the lower shell is provided with a first support part and a second support part for supporting the valve plate seat, since the valve plate seat is generally in the shape of a bowl holder, the top opening has a rim, when the valve plate seat is assembled, the rim of the valve plate seat is supported on the first support part, and the bottom edge of the bowl holder is supported on the second support part, in addition, the parts of the valve plate seat in contact with the first support part and the second support part are respectively provided with a first rubber ring 1211 and a second rubber ring 1222 for positioning, realizing accurate and quick assembly.

[0034] Specifically, as shown, Figure 2 The quick-release structure 13 includes a clamping ring 131 and a lock rod 132, the clamping ring includes two hinged half rings (1311, 1312), the ends of the two half rings away from the hinge point both have a bayonet 1322, one end of the lock rod is rotationally connected with the bayonet of one of the half rings 1311, and the other end can be rotationally connected with the bayonet of the other half ring 1312; the upper shell, the lower shell and the valve plate seat are combined together according to the assembly structure, the connection parts of the upper shell and the lower shell are respectively provided with a locking edge (111, 1111), the clamping ring is wrapped around the locking edges of the connection parts of the upper shell and the lower shell and clamped, then the lock rod is rotated from the bayonet of one half ring 1311 to the bayonet of the other half ring 1312 to realize locking, when the components of the vacuum valve are to be disassembled, the lock rod is only rotated to the other side, and unlocking can be realized, which is convenient, fast and efficient.

[0035] Specifically, the upper shell of the vacuum valve in the embodiment is provided with a first gas interface P1 connected with a vacuum air source (which can be a vacuum station), the lower shell is provided with a second gas interface P2, the valve plate seat A2 and the valve port A3 are both arranged in the lower shell, the driving assembly is arranged between the upper shell and the valve plate seat, and the driving assembly is fixedly connected to the head end of the valve plate 14; when water drainage is needed, the first gas interface of the upper shell is connected with the vacuum air source, the vacuum suction force acts on the driving assembly, so that the driving assembly drives the valve plate to move upward and drives the tail end of the valve plate to move away from the valve port, thereby realizing the opening of the valve.

[0036] Specifically, the driving assembly comprises a rubber diaphragm A4 and a first spring A5, the rubber diaphragm is clamped between the upper shell and the lower shell, so that the upper shell and the lower shell are sealed from each other by the rubber diaphragm and cannot communicate with each other, the rubber diaphragm is fixedly connected to the head end of the valve plate 14, and the first spring is arranged between the rubber diaphragm and the upper shell; when the first gas interface is connected with the vacuum and the second gas interface is connected with the atmospheric pressure, the rubber diaphragm is deformed, drives the valve plate to displace toward the upper shell and press the first spring, and at this time, the opening of the vacuum valve is realized; in the embodiment, the first spring is selected to have sufficient free length and sufficient compression amount, so that when the second gas interface and the first gas interface are connected with the atmospheric pressure, the gas pressures in the upper shell and the lower shell are the same, at this time, the compressed spring in the upper shell has no vacuum suction force, only the compression force of the spring acts on the rubber diaphragm, the huge spring compression force of the first spring will promote the rubber diaphragm to gradually restore the deformation under the action of the force of the first spring, and the elastic force of the rubber diaphragm and the action force of the spring jointly drive the valve plate to move toward the valve port, so that the closing of the vacuum valve is realized, and at the time of closing, the spring is in a semi-compressed state; in the embodiment, the selection of the first spring changes the original double-gas-chamber (the gas chambers above and below the rubber diaphragm) double-vacuum (the first and second gas interfaces are connected with the vacuum in turn) rotation suction into double-gas-chamber single-vacuum (only the first gas interface is connected with the vacuum, and the valve is opened) suction, and the opening and closing of the vacuum valve can be realized, but the overall vacuum gas supply measure can be reduced by half.

[0037] In order to realize the miniaturization of the vacuum valve, when designing, the middle part of the tray of the rubber diaphragm is protruded toward the upper shell, and the valve plate seat is designed to match the shape of the tray, so that the displacement stroke of the rubber diaphragm, that is, the displacement stroke of the valve plate, is lengthened in the limited space, compared with other vacuum valves that need the same displacement stroke, the volume of the upper shell can be reduced, and the purpose of reducing the overall volume of the vacuum valve is achieved; when further optimizing, the middle part of the inner top wall of the upper shell is protruded toward the lower shell, and from the outside, the top part of the upper shell is recessed in the middle part, and the first gas interface is arranged at the center of the recessed part, so that the height of the upper shell can be further reduced, and the volume of the vacuum valve can be further reduced.

[0038] Embodiment 2:

[0039] As Figures 5-6 shown in FIG. 1, a quick-release vacuum valve is basically the same as the structure of the embodiment 1, the difference is that the driving assembly includes a driving disc B2 and a second spring B8, the driving disc is fixedly connected with the head end of the valve plate, the tail end (valve head) of the valve plate 14 is located between the valve plate seat and the valve port, the second spring is arranged between the upper shell and the driving disc, when the driving disc moves back and forth, it can drive the tail end (valve head) of the valve plate to move back and forth between the valve plate seat and the valve port; the driving disc is arranged in the upper shell and can only move along the inner side wall of the upper shell in the upper shell.

[0040] In normal state, the driving disc is close to the valve plate seat, the valve head of the valve plate abuts against the valve port, and the valve is in closed state; the first gas interface in the middle of the top wall of the upper shell, after the first gas interface is connected with the true gas, the driving disc is moved upward under the action of vacuum suction, at the same time, it drives the valve plate to move from the valve port to the valve plate seat, and opens the valve.

[0041] In order to enable the driving disc to move under the action of vacuum suction, the inner side wall of the upper shell and the driving disc must be tightly connected, that is, the upper and lower parts of the driving disc in the upper shell are not in communication with each other, therefore, the outer peripheral wall of the driving disc is provided with a first sealing ring B7, when the driving disc moves upward, the driving disc extrudes the first sealing ring on the inner side wall of the upper shell; the sealing ring is generally made of rubber, the slight deformation of rubber can improve the tightness of the contact point, so as to achieve the sealing effect. In view of the sealing effect, a plurality of first sealing rings can be arranged on the outer peripheral wall of the driving disc, the plurality of first sealing rings are arranged at intervals along the length of the outer peripheral wall (the length is in the direction of displacement of the driving disc), and in the embodiment, preferably, two first sealing rings are arranged on the upper and lower parts of the outer peripheral wall of the driving disc.

[0042] Specifically, the first sealing ring is sleeved on the outer peripheral wall of the driving disc, the outer peripheral wall of the driving disc has a groove B21, the first sealing ring is sleeved on the groove on the outer peripheral wall of the driving disc, half of the first sealing ring is embedded in the groove, and the other half protrudes out of the groove to extrude and contact the inner side wall of the upper shell and can move along the surface thereof.

[0043] The upper shell, the driving disc and the sealing ring constitute a sealed cavity, and the second gas interface P2 is arranged between the driving disc and the valve plate seat, when the first gas interface arranged on the upper shell is connected with the vacuum suction, the driving disc can move along the inner side wall of the upper shell under the action of vacuum suction.

[0044] The second spring B8 is arranged between the driving disc and the upper shell, and the second spring has sufficient free length and sufficient compression amount; the driving disc is lifted under the action of the vacuum suction force and simultaneously presses the second spring, until the second spring is maximally compressed; when the vacuum suction force of the first gas interface disappears, the compression force of the second spring acts on the driving disc, and the great compression force of the second spring promotes the driving disc to move towards the valve seat, the driving disc drives the valve plate to move towards the valve port, and the vacuum valve is closed; when closed, the second spring is in a semi-compressed state; in the embodiment, the selection of the second spring changes the original z-vacuum alternately suction of the first gas interface and the second gas interface into the vacuum suction of only the first gas interface, so that the opening and closing of the valve are realized; the embodiment also has the actuation of opening and closing the vacuum valve, but the whole vacuum gas supply measure can be reduced by half.

[0045] In order to realize the miniaturization of the vacuum valve, in the design, the middle part of the driving disc is protruded towards the upper shell, and the valve seat is designed to match the shape of the driving disc and complement the space, so as to reduce the height of the upper cover and the overall height of the valve body; in further optimization, the middle part of the inner top wall of the upper shell is protruded towards the driving disc, and from the outside, the top part of the upper shell is recessed in the middle, and the first gas interface is arranged at the center of the recessed part, so that the length of the upper shell (the length is in the direction of displacement of the driving disc) can be further reduced, and the volume of the vacuum valve can be further reduced.

[0046] In the present example, it needs to be explained that when the upper shell is demolded from the mold, due to technical reasons, the inner side wall of the upper shell is not perpendicular to the inner top wall, but is outwardly inclined to form an obtuse angle, therefore, if the sealing ring is not arranged, the gap between the driving disc and the inner side wall of the upper shell will gradually become smaller in the lifting process of the driving disc, the extrusion between the driving disc and the inner side wall of the upper shell will become tighter and tighter, until the driving disc cannot be lifted, resulting in failure of opening the valve, therefore, the arrangement of the sealing ring not only can realize the sealed connection between the driving disc and the inner side wall of the upper shell, but also the slight deformation of the rubber can better adapt to the size change of the gap between the driving disc and the inner side wall of the upper shell, so that the valve can be smoothly opened.

[0047] In the embodiment, the driving disc can be a rubber disc or a metal disc.

[0048] In the embodiment, in order to tightly fit the valve head of the valve plate with the valve port, the valve head is coated with a layer of rubber, and the rubber coating type can adopt full rubber coating of the valve plate body or partial rubber coating of the rubber-embedded part at the joint with the valve port, so that the slight deformation of the rubber can improve the tightness of the contact point.

[0049] The working process of the embodiment is as follows:

[0050] In the normal state, the driving disc is close to the valve seat, the valve head of the valve plate abuts against the valve port, and the valve is in a closed state.

[0051] Opening the valve: Connect the first gas port in the middle of the top of the upper housing to the vacuum source. The drive plate moves upward under the vacuum suction force, and at the same time, it drives the valve plate to move from the valve port to the valve plate seat, thus opening the valve.

[0052] Closing the valve: Disconnect the vacuum source from the first gas interface. The compression force of the second spring acts on the drive plate. The huge compression force of the second spring will cause the drive plate to move towards the valve plate seat. The drive plate drives the valve plate to move towards the valve port, thus closing the vacuum valve.

[0053] Example 3:

[0054] like Figures 7-8 As shown, a quick-release vacuum valve has a structure that is basically the same as that of Embodiment 2, except that: an inner cylinder B9 is provided inside the upper housing and closely attached to the inner side wall. The cross-section of the inner cylinder is a circle that matches the shape of the end cap. The inner cylinder is located between the inner top wall of the upper housing and the valve plate seat, and the cylinder wall of the inner cylinder is perpendicular to the inner top wall / valve plate seat. The inner cylinder and the upper housing are sealed and connected by a second sealing ring B10, and the inner side wall of the inner cylinder is sealed and connected to the drive disc by a first sealing ring.

[0055] An inner cylinder perpendicular to the top wall of the upper shell can eliminate the outward tilting of the inner wall caused by demolding. The gap between the drive disc and the inner wall of the inner cylinder is of uniform size, and the drive disc moves more smoothly in the inner cylinder.

[0056] Example 4:

[0057] A vacuum drainage system includes the vacuum valves described in Examples 1-3.

[0058] The vacuum valve in this embodiment has the same technical effect as the vacuum valves in Embodiments 1-3, and will not be described in detail here.

[0059] In the description of this utility model, it should be noted that the terms "center / middle," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "linkage", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.In addition, the technical features involved in the different embodiments of the utility model described below can be combined as long as they do not conflict with each other.

[0061] It should be emphasized that: the above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the scope of the technical scheme of the utility model.

Claims

1. A quick-release vacuum valve, characterized by, The upper shell, the lower shell and the valve plate seat are locked together by a quick release structure; The lower shell is provided with a first support part and a second support part for supporting the valve plate seat, and the first support part and the second support part support the top and bottom of the valve plate seat respectively.

2. The quick-release vacuum valve according to claim 1, wherein The quick release structure comprises a clamping ring and a locking rod, the clamping ring comprises two hinged half rings, and each half ring is provided with a bayonet at one end away from the hinge point.

3. The quick-release vacuum valve according to claim 1, wherein The upper shell and the valve plate seat are provided with a driving assembly, the driving assembly is fixedly connected to the head end of the valve plate, and the driving assembly drives the valve plate to move back and forth to make the tail end of the valve plate away from or close to the valve port, thereby realizing the opening and closing of the valve.

4. The quick-release vacuum valve according to claim 3, wherein The upper shell is provided with a first gas interface for connecting a vacuum gas source to control the action of the driving assembly.

5. The quick-release vacuum valve according to claim 3, wherein The driving assembly comprises a rubber diaphragm and a spring, the rubber diaphragm is clamped between the upper shell and the lower shell, the upper shell and the lower shell are sealed from each other by the rubber diaphragm, the rubber diaphragm is fixedly connected to the head end of the valve plate, and the spring is arranged between the rubber diaphragm and the upper shell. The rubber diaphragm can drive the valve plate to move back and forth between the valve plate seat and the valve port when the rubber diaphragm deforms and recovers, and the rubber diaphragm can extrude the spring and recover under the action of the spring when the rubber diaphragm deforms and moves towards the upper shell.

6. The quick release vacuum valve according to claim 3, wherein The driving assembly comprises a driving disc and a spring, the driving disc is fixedly connected to the head end of the valve plate, and the spring is arranged between the upper shell and the driving disc. The driving disc can drive the tail end of the valve plate to move back and forth between the valve plate seat and the valve port when the driving disc moves back and forth, and the driving disc can extrude the spring and move towards the lower shell under the action of the spring when the driving disc is forced to move towards the upper shell.

7. The novel vacuum valve according to claim 6, characterized in that The inner side wall of the upper shell and the driving disc are sealingly connected by a sealing element.

8. The novel vacuum valve according to claim 6, characterized in that The upper shell is provided with a circular inner cylinder, the inner cylinder and the upper shell are sealingly connected by a sealing element, and the inner side wall of the inner cylinder and the driving disc are sealingly connected by a sealing element.

9. The quick release vacuum valve of claim 1, wherein, The middle part of the inner top wall of the upper shell protrudes towards the lower shell.

10. A vacuum drainage system, characterized in that The vacuum valve of any one of claims 1-9.

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