A dripping valve and its valve

Abstract

The present invention discloses a drip valve and its valve, which is provided with a first gap. By controlling the flow rate of the first gap, the opening and closing of the drip valve are realized. In this way, when the valve leaks, water leaks out from the drip valve and can be detected in time, and water will not accumulate at the water outlet and drip from the nozzle to wet indoor items. Moreover, in case of a fire, due to the overloaded water pressure, the drip valve can be automatically closed without affecting the fire fighting water supply.

Description

Technical Field

[0001] The present invention relates to the related field of fire-fighting water valves; specifically, it relates to a drip valve and its valve. Background Art

[0002] Fire-fighting valves are important accessories for control on industrial and building pipelines. Generally, a fire-fighting valve consists of three major parts: a valve body, an opening and closing mechanism, and a valve cover. Rubber parts and other sealing parts are widely used in fire-fighting valves. However, these parts are prone to being damaged due to oxidation over time or reasons such as high water pressure and water hammer effect, and need to be repaired and replaced regularly. However, in existing deluge valves, due to reasons such as the aging of the sealing ring in the diaphragm, the sealing of the diaphragm is prone to being insecure and leaking water. When the current valve leaks water, it is often only discovered when water drips from the deluge sprinkler, causing many inconveniences. Therefore, a valve capable of detecting the sealing condition of the diaphragm is needed. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the first object of the present invention is to provide a drip valve and its valve, which are provided with a drip valve so that when the valve leaks water, it leaks out from the drip valve and can be detected in time, and it will not cause water to accumulate at the water outlet and drip onto indoor items from the sprinkler head; moreover, during a fire, due to overloaded water pressure, the drip valve can be automatically closed without affecting the fire-fighting water supply.

[0004] The object of the present invention can be achieved by adopting the following technical solutions:

[0005] A drip valve includes: a housing, a base, a return spring, and a seal; the housing is a hollow tubular structure; the bottom of the housing is fixedly connected to the base, and the upper part of the housing is communicated with the valve to be detected; the base is provided with a collection groove for collecting dripping water; one end of the return spring is fixedly connected to the base, and the other end abuts against the seal; a first gap is provided between the seal and the housing; a second gap is provided between the seal and the top of the collection groove; the collection groove is communicated with the outside, and the collection groove, the second gap, and the first gap are communicated in sequence; the seal can move towards the collection groove under the action of water pressure and close the second gap, blocking the communication between the first gap and the collection groove to achieve sealing, or the seal can move away from the collection groove under the elastic force of the return spring and open the second gap to achieve the communication between the first gap and the collection groove.

[0006] Preferably; the drip valve further includes a cap; the seal is installed at the bottom of the cap.

[0007] Preferably; the drip valve further includes a guide rod; the guide rod is arranged in the collection groove, and the guide rod is pivotally connected to the base so that the guide rod can slide through the base along the length direction of the guide rod; the return spring is sleeved on the guide rod; the guide rod is fixedly connected to the seal.

[0008] Preferably, a partition is provided on the housing, and a through hole for communicating the valve to be detected with the first gap is provided on the partition; the guide rod is movably inserted on the partition.

[0009] The present invention also provides a valve; including a drip valve, a valve body, a diaphragm, and a valve cover;

[0010] The diaphragm includes a diaphragm body, a valve diaphragm, and a sealing ring; the valve diaphragm is installed at the upper end of the diaphragm body; the sealing ring is installed at the lower end of the diaphragm body; so that the valve diaphragm, the diaphragm body, and the sealing ring form a layered structure;

[0011] The valve cover is fixedly installed on the top of the valve body and encloses an inner cavity with the valve body; the diaphragm is installed in the inner cavity of the valve body; the valve diaphragm is clamped between the valve cover and the valve body; the valve body further includes a water inlet and a water outlet; the water inlet is communicated with the inner cavity through a flowing water through hole; the inner cavity is communicated with the water outlet; the sealing ring of the diaphragm abuts against the upper edge of the flowing water through hole to seal and close the flowing water through hole, or the sealing ring deviates from the flowing water through hole so that the water inlet is communicated with the water outlet;

[0012] One end of the drip valve away from the base is fixedly connected to the valve body, and the drip valve is communicated with the inner cavity of the valve body.

[0013] Preferably, the diaphragm includes: a diaphragm body, an upper pressing plate, a valve diaphragm, a sealing ring, and a lower pressing plate; the upper pressing plate, the valve diaphragm, and the diaphragm body are sequentially overlapped and arranged, and the upper pressing plate is fixedly connected to the diaphragm body, so that the valve diaphragm is clamped between the upper pressing plate and the diaphragm body; the diaphragm body, the sealing ring, and the lower pressing plate are sequentially overlapped and arranged, and the lower pressing plate is fixedly connected to the diaphragm body, so that the sealing ring is clamped between the lower pressing plate and the diaphragm body.

[0014] Preferably, the valve diaphragm includes: a diaphragm body and a disc spring; the diaphragm body is flexible and the diaphragm body is in a disc shape; the disc spring overlaps and is fixedly connected to the diaphragm body to form a layered structure.

[0015] Preferably, the valve diaphragm body includes an outer ring, a connecting ring, and an inner ring connected in sequence; the connecting ring is in a frustum shape; the inner diameter of the outer ring is greater than the outer diameter of the inner ring; the disc spring has the same shape as the diaphragm body.

[0016] Preferably, a through hole is provided in the middle of the valve diaphragm body and the disc spring.

[0017] Preferably, the disc spring is completely covered by the diaphragm body.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The drip valve and its valve provided by the present invention are provided with a drip valve so that when the valve leaks, it leaks from the drip valve and can be detected in time, and water accumulation at the water outlet will not occur to cause the water to drip from the nozzle and wet indoor items; and in case of a fire, the drip valve can be automatically closed due to overloaded water pressure, without affecting the disaster relief water supply.

[0020] 2. The diaphragm specifically for the valve provided by the present invention has the advantages of being easy to maintain, convenient for disassembly and assembly, and small in volume; and by adopting a diaphragm with an internally placed disc spring, the traditional spiral spring can be dispensed with, thereby effectively reducing the thickness of the valve and the space required for installation, and being very convenient for maintenance and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic structural diagram of the valve;

[0022] Figure 2 Cross-sectional view of the valve in the closed state;

[0023] Figure 3 Cross-sectional view of the valve in the open state;

[0024] Figure 4 Exploded view of the diaphragm;

[0025] Figure 5 Cross-sectional view of the diaphragm;

[0026] Figure 6 Figure 5 Enlarged view of area A therein;

[0027] Figure 7 Graph of disc spring opening degree and spring closing force;

[0028] Figure 8 Graph of spiral spring opening degree and spring closing force;

[0029] Figure 9 Schematic diagram of the use state of the drip valve installed on the valve;

[0030] Figure 10 Cross-sectional view of the drip valve in the open state;

[0031] Figure 11 Cross-sectional view of the drip valve in the closed state;

[0032] Among them, 1. membrane flap; 10. water inlet; 11. valve diaphragm; 111. disc spring; 112. diaphragm body; 1121. outer ring; 1122. connecting ring; 1123. inner ring; 12. membrane flap main body; 13. sealing ring; 14. screw hole; 15. bolt; 16. upper pressure plate; 17. lower pressure plate; 2. valve body; 20. water outlet; 23. water flow through hole; 24. inner cavity; 3. valve cover; 30. control cavity; 7. drip valve; 71. housing; 711. partition; 72. base; 721. collection tank; 73. return spring; 74. seal; 741. second gap; 742. first gap; 75. cap; 76. guide rod. Detailed implementation manners

[0033] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Embodiment 1:

[0037] As Figures 1-6As shown in the figure, a valve structure includes a valve body 2, a valve cover 3, and a diaphragm 1. An inner cavity 24 is provided on the valve body, and a water inlet 10 and a water outlet 20 that communicate through the inner cavity 24 are provided on the valve body 2. The inner cavity 24 communicates with the water outlet 20. A water flow through hole 23 for communicating the water inlet with the inner cavity 24 is provided on the valve body 2. The diaphragm 1 is arranged in the inner cavity 24. Specifically, a valve diaphragm 11 is provided on the diaphragm 1, and a disc spring 111 is provided on the valve diaphragm 11. The valve cover 3 is buckled and fixedly connected to the valve body 2, and the valve diaphragm 11 is clamped between the valve cover and the valve body 2. The sealing ring 13 of the diaphragm 1 abuts against the upper edge of the water flow through hole 23 to seal and close the water flow through hole 23, or the sealing ring 13 deviates from the water flow through hole 23 to communicate the water inlet 10 with the water outlet 20. In this embodiment, when the water pressure at the water inlet 10 is greater than that of the disc spring 111, the diaphragm 1 is pushed away from the water flow through hole 23 to achieve water passage.

[0038] As a preferred embodiment, the valve cover 3 and the valve diaphragm 11 form a closed control cavity 30. The control cavity 30 communicates with the water inlet 10, so that the water pressure in the control cavity 30 and the pressure of the disc spring 111 jointly control the opening and closing of the diaphragm 1. As a preferred embodiment, a helical spring can also be installed between the valve cover 3 and the diaphragm to replace the disc spring 111 or to enhance the elastic force.

[0039] Embodiment 2

[0040] As Figures 1-8 As shown in the figure, a diaphragm 1 includes a diaphragm main body 12, an upper pressing plate 16, a valve diaphragm 11, a sealing ring 13, and a lower pressing plate 17. The upper pressing plate 16, the valve diaphragm 11, and the diaphragm main body 12 are sequentially overlapped and arranged, and the upper pressing plate 16 is fixedly connected to the diaphragm main body 12, so that the valve diaphragm 11 is clamped between the upper pressing plate 16 and the diaphragm main body 12. The diaphragm main body 12, the sealing ring 13, and the lower pressing plate 17 are sequentially overlapped and arranged, and the lower pressing plate 17 is fixedly connected to the diaphragm main body 12, so that the sealing ring 13 is clamped between the lower pressing plate 17 and the diaphragm main body 12. By providing the diaphragm 1 with this structure in this embodiment, the diaphragm 1 can be easily disassembled and assembled during maintenance, and this structure can effectively reduce the thickness of the entire valve, facilitating engineering installation and saving installation space.

[0041] As a preferred embodiment, the upper pressing plate 16 and the diaphragm main body 12 are fixedly connected by bolts 15. The lower pressing plate 17 and the diaphragm main body 12 are fixedly connected by bolts 15. Directly screwing the bolts 15 into the screw holes 14 on the diaphragm main body 12 can ensure the installation strength and is also beneficial for later maintenance.

[0042] As a preferred embodiment, the valve diaphragm 11 includes: a diaphragm body 112 and a disc spring 111; the diaphragm body 112 is flexible and in the shape of a disc; the diaphragm body 112 can be made of a flexible material such as rubber; the disc spring 111 overlaps and is fixedly connected to the diaphragm body 112 to form a layered structure. This embodiment provides a brand-new valve diaphragm 11. Since the disc spring 111 is provided inside the valve diaphragm 11, the entire valve can be made without using a traditional helical spring, reducing the overall thickness of the valve, which is very beneficial for later installation; at the same time, referring to Figure 7 , Figure 8 , it can be seen that the elastic force of the traditional helical spring (the cylindrical compression spring shown in the figure) is linearly related to the length, directly resulting in the need for a very large water pressure when the opening of the valve needs to be large, thus easily causing the water flow to be unsmooth; the disc spring 111 (the built-in spring plate shown in the figure) has an S-shaped elastic force curve, and the pressure required to reach the required opening is relatively small to a certain extent. For example, when the opening is 40%, the elastic force (the closing force shown in the figure) required by the disc spring 111 is less than 40%, while for the same opening, the helical spring is greater than 40%.

[0043] As a preferred embodiment, the diaphragm body 112 includes an outer ring 1121, a connecting ring 1122, and an inner ring 1123 that are connected in sequence; the connecting ring 1122 is in the shape of a frustum of a cone; the inner diameter of the outer ring 1121 is greater than the outer diameter of the inner ring 1123; the disc spring 111 has the same shape as the diaphragm body 112.

[0044] As a preferred embodiment, a through hole is provided between the diaphragm body 112 and the disc spring 111. The provision of the through hole is beneficial for installing the diaphragm main body 12 through the valve diaphragm 11, and at the same time, the disc spring 111 with holes is more suitable for the valve structure described in this embodiment.

[0045] As a preferred embodiment, the disc spring 111 is completely covered by the diaphragm body 112. Completely covering the disc spring 111 can prevent it from rusting and is beneficial for improving the service life.

[0046] Embodiment 3

[0047] As Figures 1-11A drip valve 7 includes: a housing 71, a base 72, a return spring 73, and a seal 74; the housing 71 is a hollow tubular structure; the bottom of the housing 71 is fixedly connected to the base 72, and the upper part of the housing 71 is communicated with the valve to be detected; specifically, the housing 71 is communicated with the inner cavity 24; the base 72 is provided with a collection groove 721 for collecting dripping water; one end of the return spring 73 is fixedly connected to the base 72, and the other end abuts against the seal 74; a first gap 742 is provided between the seal 74 and the housing 71; a second gap 741 is provided between the seal 74 and the top of the collection groove 721; the collection groove 721 is communicated with the outside, and the collection groove 721, the second gap 741, and the first gap 742 are communicated in sequence; the seal 74 can move towards the collection groove 721 under the action of water pressure and close the second gap 741 to block the communication between the first gap 742 and the collection groove 721 to achieve sealing, or the seal 74 can move away from the collection groove 721 under the elastic force of the return spring 73 and open the second gap 741 to achieve the communication between the first gap 742 and the collection groove 721. The drip valve 7 provided by the present invention is applicable to the control valve adapted to the deluge valve lock. If the diaphragm 1 of the valve leaks water, due to the small water flow, the water flow smoothly drains away from the first gap 742 to prevent the valve from leaking water to the nozzle; secondly, it can also effectively monitor whether there are problems such as aging of the valve; if a fire occurs, the diaphragm 1 opens, the inner cavity 24 is filled with water and the water pressure is high, and the water flow is large, resulting in the water flow being unable to pass through the first gap 742 smoothly. At this time, due to the water pressure acting on the top of the seal 74, the return spring 73 is compressed, so that the seal 74 moves downward to close the second gap 741 to block the water flow from flowing out; ensuring the water supply during the fire.

[0048] As a preferred embodiment: the drip valve 7 further includes a cap 75; the seal 74 is installed at the bottom of the cap 75. Setting the cap 75 can effectively enhance the anti-deformation strength of the seal 74.

[0049] As a preferred embodiment; the drip valve 7 further includes a guide rod 76; the guide rod 76 is arranged in the collection groove 721, and the guide rod 76 is pivotally connected to the base 72 so that the guide rod 76 can slide through the base 72 along the length direction of the guide rod 76; the return spring 73 is sleeved on the guide rod 76; the guide rod 76 is fixedly connected to the seal 74.

[0050] As a preferred embodiment, a partition 711 is provided on the housing 71, and a through hole for communicating the valve to be detected with the first gap 742 is provided on the partition 711; the guide rod 76 is movably inserted on the partition 711.

[0051] This embodiment also provides a valve, including the drip valve 7, the valve body 2, the diaphragm 1, and the valve cover 3 as claimed in the claims;

[0052] The membrane flap includes a membrane flap body 12, a valve diaphragm 11, and a sealing ring 13; the valve diaphragm 11 is installed at the upper end of the membrane flap body 12; the sealing ring 13 is installed at the lower end of the membrane flap body 12; such that the valve diaphragm 11, the membrane flap body 12, and the sealing ring 13 form a layered structure;

[0053] The valve cover 3 is fixedly installed on the top of the valve body 2 and encloses an inner cavity 24 with the valve body 2; the membrane flap 1 is installed in the inner cavity 24 of the valve body 2; the valve diaphragm 11 is clamped between the valve cover 3 and the valve body 2; the valve body 2 further includes a water inlet 10 and a water outlet 20; the water inlet 10 is communicated with the inner cavity 24 through a water flow through hole 23; the inner cavity 24 is communicated with the water outlet 20; the sealing ring 13 of the membrane flap 1 abuts against the upper edge of the water flow through hole 23 to seal and close the water flow through hole 23, or the sealing ring 13 deviates from the water flow through hole 23 to communicate the water inlet 10 with the water outlet 20;

[0054] One end of the drip valve 7 away from the base 72 is fixedly connected to the valve body 2, and the drip valve 7 is communicated with the inner cavity 24 of the valve body 2.

[0055] For those skilled in the art, various corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all such changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. A valve, characterized in that: It includes a drip valve, a valve body, a diaphragm, and a valve cover; The drip valve includes: a housing, a base, a return spring, and a seal; the housing is a hollow tubular structure; the bottom of the housing is fixedly connected to the base, and the upper part of the housing communicates with the valve body; the base is provided with a collection groove for collecting dripping water; one end of the return spring is fixedly connected to the base, and the other end abuts against the seal; a first gap is provided between the seal and the housing; a second gap is provided between the seal and the top of the collection groove; the collection groove communicates with the outside, and the collection groove, the second gap, and the first gap are sequentially communicated; the seal can move towards the collection groove under the action of water pressure and close the second gap to block the communication between the first gap and the collection groove to achieve sealing, or the seal can move away from the collection groove under the elastic force of the return spring and open the second gap to achieve the communication between the first gap and the collection groove; The drip valve further includes a guide rod; the guide rod is arranged in the collection groove, and the guide rod is pivotally connected to the base so that the guide rod can slide through the base along the length direction of the guide rod; the return spring is sleeved on the guide rod; the guide rod is fixedly connected to the seal; The diaphragm includes a diaphragm body, a valve diaphragm, and a sealing ring; the valve diaphragm is installed at the upper end of the diaphragm body; the sealing ring is installed at the lower end of the diaphragm body; so that the valve diaphragm, the diaphragm body, and the sealing ring form a layered structure; The valve cover is fixedly installed on the top of the valve body and encloses an inner cavity with the valve body; the diaphragm is installed in the inner cavity of the valve body; the valve diaphragm is clamped between the valve cover and the valve body; the valve body further includes a water inlet and a water outlet; the water inlet communicates with the inner cavity through a flowing water through hole; the inner cavity communicates with the water outlet; the sealing ring of the diaphragm abuts against the upper edge of the flowing water through hole to seal and close the flowing water through hole, or the sealing ring deviates from the flowing water through hole to connect the water inlet and the water outlet; One end of the drip valve away from the base is fixedly connected to the valve body, and the drip valve communicates with the inner cavity of the valve body; The valve diaphragm includes a diaphragm body and a disc spring; the diaphragm body is flexible and the diaphragm body is in a disc shape; the disc spring overlaps and is fixedly connected with the diaphragm body to form a layered structure; The disc spring is completely covered by the diaphragm body; The drip valve further includes a cap; the seal is installed at the bottom of the cap.

2. The valve according to claim 1, wherein: A partition is provided on the housing, and a through hole for communicating the valve body and the first gap is provided on the partition; the guide rod is movably inserted on the partition.

3. The valve according to claim 1, characterized in that: The diaphragm includes a diaphragm body, an upper pressing plate, a valve diaphragm, a sealing ring, and a lower pressing plate; the upper pressing plate, the valve diaphragm, and the diaphragm body are sequentially overlapped and arranged, and the upper pressing plate is fixedly connected to the diaphragm body, so that the valve diaphragm is clamped between the upper pressing plate and the diaphragm body; the diaphragm body, the sealing ring, and the lower pressing plate are sequentially overlapped and arranged, and the lower pressing plate is fixedly connected to the diaphragm body, so that the sealing ring is clamped between the lower pressing plate and the diaphragm body.

4. The valve according to claim 1, wherein: A through hole is provided between the diaphragm body and the disc spring.

Images