Exhaust valve

Abstract

An exhaust valve is installed on a filtering sand cylinder of a swimming pool and comprises a valve body and a valve element. A top-reaching limiting boss and a bottom-reaching limiting boss are arranged on the outer wall of the upper portion of the valve body. A vertical channel, a transverse channel and a valve core mounting hole which are communicated are formed in the valve body; the outer end of the transverse channel is provided with a connector used for being connected with an exhaust pipe. Three to five internal threads are arranged on the inner wall of the valve core mounting hole; the valve core comprises a valve core part and a plug with a first sealing ring; a knob and an elastic baffle plate are arranged on the valve core; the outer wall of the valve element part is provided with multi-line external threads matched with the internal threads, at least two vertical conduction grooves are vertically formed in the outer wall of the valve element part at intervals, and a communication groove formed by one removed external thread is transversely formed in the outer wall of the valve element part. All the vertical conducting grooves are communicated through the communicating grooves; when the elastic blocking piece is in a natural state, the elastic blocking piece can be blocked and contacted by the top-reaching limiting boss and the bottom-reaching limiting boss. The exhaust valve is more reasonable in structure, and the exhaust operation is quicker and more effective.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of swimming pool filtering equipment, especially the exhaust valve mounted on swimming pool filtering sand tank. BACKGROUND

[0002] At present, the exhaust valve on swimming pool filtering sand tank is provided with exhaust small holes (cannot be connected with small pipe outside) on valve body, vertical groove is provided on the outer wall of knob, when rotating knob to exhaust, small part of water will be sprayed out with air sometimes, splash the people or objects around;In addition, the knob of the current exhaust valve adopts single thread, so, it is slow to open and close valve when screwing, it is not convenient for daily operation and use. SUMMARY

[0003] The utility model aims at overcoming the insufficient of prior art, provide a kind of exhaust valve, more reasonable in structure, more quickly and effectively in the operation of exhaust.

[0004] In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme:

[0005] An exhaust valve, comprising a valve body and a valve core, wherein:

[0006] The lower part of the valve body is provided with external screw thread for screwing into the filter sand tank, and the upper part of the outer wall is provided with a top limit stop boss and a bottom limit stop boss;A vertical channel, a horizontal channel and a valve core mounting hole are provided in the valve body;An interface for connecting the exhaust pipe is provided at the outer end of the horizontal channel;A multi-threaded internal thread is provided on the inner wall of the valve core mounting hole;The multi-threaded internal thread is a three to five thread;

[0007] The valve core includes a valve core part and a plug with a first sealing ring;A knob and an elastic stopper are provided on the valve core;The outer wall of the valve core part is a multi-threaded external thread matched with the internal thread, at least two vertical guide channels are vertically spaced apart on the outer wall of the valve core part, and a communication groove is horizontally provided by removing one of the external threads;The communication groove connects all the vertical guide channels;The elastic stopper can be blocked by the top limit stop boss and the bottom limit stop boss in the natural state;When the knob is rotated to lift the valve core within the range of the top limit stop boss and the bottom limit stop boss after the valve core is installed in the valve body, the first sealing ring of the plug can block the vertical channel and unblock the vertical channel.

[0008] In the improvement scheme of the above-mentioned exhaust valve: the top limit stop boss and the bottom limit stop boss each include a straight stop surface and an arc-shaped guide sliding surface;The elastic stopper can slide along the guide sliding surface of the top limit stop boss and be elastically deformed to slide into the stopper moving space formed by the two straight stop surfaces of the top limit stop boss and the bottom limit stop boss under the action of the guide sliding surface.

[0009] In the improvement of the above-mentioned exhaust valve: the valve core is provided with a second sealing ring for preventing water from leaking out of the upper end of the valve core mounting hole.

[0010] In the improvement of the above-mentioned exhaust valve: the vertical passage of the valve body and the valve core mounting hole are vertically communicated.

[0011] In the improvement of the above-mentioned exhaust valve: the valve core mounting hole of the valve body is obliquely arranged and is communicated with the vertical passage at an obtuse angle; the valve body is provided with a pressure gauge communicated with the vertical passage.

[0012] In the improvement of the above-mentioned exhaust valve: the outer wall of the upper part of the valve body is provided with an anti-loosening stop platform beside the bottom limiting boss.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: on the one hand, since the valve core and the valve body are connected by screwing with multi-thread, the operation is faster when the knob is screwed to open and close the valve; on the other hand, since one outer thread of the multi-thread of the valve core part is removed to form a communication groove communicated with all the vertical guide through grooves, the gas can flow to the horizontal passage through all the vertical guide through grooves, thereby facilitating faster exhaust; at the same time, since the interface for connecting the exhaust pipe is arranged at the outer end of the horizontal passage of the valve body, after the exhaust pipe is connected to the interface, the situation that part of water is splashed to the surrounding people or objects during exhaust can be avoided; therefore, the structure of the utility model is more reasonable, and the operation of exhaust is faster and more effective.

[0014] The utility model will be described in further detail in combination with the drawings and specific embodiments: BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the assembly schematic view of the utility model embodiment one;

[0016] Figure 2 is the three-dimensional schematic view of the utility model embodiment one Figure One (closed state);

[0017] Figure 3 is the structure schematic view of the utility model embodiment one Figure One (closed state);

[0018] Figure 4 is the three-dimensional schematic view of the utility model embodiment one Figure Two (open state);

[0019] Figure 5 is the structure schematic view of the utility model embodiment one Figure Two (open state);

[0020] Figure 6This is an assembly diagram of Embodiment 2 of this utility model;

[0021] Figure 7 This is a three-dimensional schematic diagram of Embodiment 2 of this utility model. Figure One (Off state);

[0022] Figure 8 This is a structural schematic diagram of Embodiment 2 of the present invention. Figure One (Off state);

[0023] Figure 9 This is a three-dimensional schematic diagram of Embodiment 2 of this utility model. Figure Two (Open);

[0024] Figure 10 This is a structural schematic diagram of Embodiment 2 of the present invention. Figure Two (Open); Detailed Implementation

[0025] This utility model is an exhaust valve, such as Figures 1 to 10 As shown, it includes valve body 1 and valve core 2, wherein:

[0026] The lower part of the valve body 1 is provided with external threads 11 for screwing the valve body into the filter sand cylinder, and the upper outer wall is provided with a top limiting boss 12 and a bottom limiting boss 13; the valve body 1 is provided with a vertical channel 14, a horizontal channel 15 and a valve core mounting hole 16; the outer end of the horizontal channel 15 is provided with an interface 151 for connecting the exhaust pipe; the inner wall of the valve core mounting hole 16 is provided with a multi-threaded internal thread 161; usually, the multi-threaded internal thread 161 is preferably three to five threads, and in this embodiment one and two, it is a four-threaded thread;

[0027] The valve core 2 comprises a valve core part 21 and a plug 22 with a first sealing ring 221; a knob 23 and an elastic baffle 24 are arranged on the valve core 2; the outer wall of the valve core part 21 is a multi-thread outer thread 211 matched with the inner thread 161, at least two vertical guide through grooves 212 are vertically and spacedly arranged on the outer wall of the valve core part 21, and a communication groove 213 formed by removing one of the outer threads is transversely arranged; the communication groove 213 communicates all the vertical guide through grooves 212, so that the gas can flow to the horizontal passage through all the vertical guide through grooves 212 as soon as one of the vertical guide through grooves 212 is communicated with the vertical passage 14, thereby facilitating faster exhaust; the elastic baffle 24 can be blocked by the top limiting boss 12 and the bottom limiting boss 13 in a natural state; when the valve core 2 is installed in the valve body 1 and the knob 23 drives the valve core 2 to ascend and descend in the range between the top limiting boss 12 and the bottom limiting boss 13, the first sealing ring 221 of the plug 22 can block or unblock the vertical passage 14 or the horizontal passage 15. In the first embodiment, as shown in Figure 3 , the first sealing ring 221 of the plug 22 blocks the vertical passage 14 in the closed state, and as shown in Figure 5 , the first sealing ring 221 of the plug 22 unblocks the vertical passage 14 in the open state; in the second embodiment, as shown in Figure 8 , the first sealing ring 221 of the plug 22 blocks the horizontal passage 15 in the closed state, and as shown in Figure 10 , the first sealing ring 221 of the plug 22 unblocks the horizontal passage 15 in the open state.

[0028] As can be seen from the above, the utility model has the following characteristics:

[0029] 1. Since the valve core 2 and the valve body 1 are connected by screwing with multi-thread, the valve can be opened and closed more quickly by screwing the knob 23;

[0030] 2. Since one of the multi-thread outer threads 211 of the valve core part 21 is removed to form the communication groove 213 for communicating all the vertical guide through grooves 212, the gas can flow to the horizontal passage more quickly through all the vertical guide through grooves 212, thereby facilitating faster exhaust;

[0031] 3. Since the interface 151 for connecting the exhaust pipe is arranged at the outer end of the horizontal passage 15 of the valve body 1, the situation that the surrounding people or objects are splashed by water during exhaust can be avoided after the exhaust pipe is connected to the interface;

[0032] Therefore, the utility model has a more reasonable structure, and the exhaust operation is more rapid and effective.

[0033] In the first and second embodiments, as shown in Figure 2 ,4 The top limit position boss 12 and the bottom limit position boss 13 both include a straight stop surface A and an arc-shaped guide sliding surface B. The elastic stop sheet 24 can slide along the guide sliding surface B of the top limit position boss 12 and elastically deform to slide into the stop sheet moving space formed by the two straight stop surfaces A of the top limit position boss 12 and the bottom limit position boss 13 under the action of the guide sliding surface B. The guide sliding surface B is an arc-shaped involute in the top view.

[0034] In the first embodiment, as shown in Figures 1 to 5 , the vertical passage 14 and the valve core mounting hole 16 of the valve body 1 are vertically communicated; in the second embodiment, as shown in Figures 6 to 10 , a pressure gauge 3 is arranged on the valve body 1 and communicated with the vertical passage 14, and the valve core mounting hole 16 of the valve body 1 is arranged obliquely and communicated with the vertical passage 14 at an obtuse angle. Thus, when the valve core is arranged in the obliquely arranged valve core mounting hole 16, the knob and the elastic stop sheet 24 will not interfere with the pressure gauge in a limited height range when the valve core is rotated, so that the exhaust valve can be made smaller, otherwise it needs to be made larger to avoid interference. In the second embodiment, when the exhaust valve is screwed to the closed state, the valve core 2 has a potential risk of being passively opened under the action of the gas flow. Therefore, in the second embodiment, an anti-loosening stop platform 17 is arranged on the outer wall of the upper part of the valve body 1 and located beside the bottom limit position boss 13, and they are located on both sides of the elastic stop sheet 24, as shown in Figure 7 . When the valve is to be opened, the elastic stop sheet 24 can slide out of the anti-loosening stop platform 17 under the action of the contact surface (which can be an inclined surface or an arc surface) of the anti-loosening stop platform 17, and then the valve core can be continuously screwed to be opened. That is to say, when the exhaust valve is in the closed state, the gas flow cannot automatically open the valve due to the space limitation between the anti-loosening stop platform 17 and the bottom limit position boss 13, and the valve can only be opened manually, thereby improving the safety of the valve in use.

[0035] A second sealing ring 4 is arranged on the valve core 2 to prevent water from leaking out of the upper end of the valve core mounting hole 16, as shown in Figure 3 , 5 , 8, 10.

[0036] Preferably, a third sealing ring 5 is also arranged on the valve body at the upper end of the external thread.

[0037] In the description of the utility model, it is understood that, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0038] Although the utility model is described in detail with reference to the above examples, it is obvious to those skilled in the art through the disclosure that various changes or modifications can be made to the utility model without departing from the principles and spirit of the utility model defined in the claims. Therefore, the detailed description of the embodiments of the disclosure is only used for explanation, not for limiting the utility model, and the protection range is defined by the content of the claims.

Claims

1. An exhaust valve comprising a valve body and a valve core, characterized in that: the lower part of the valve body is provided with external screw threads for screwing into a filter sand tank, and the upper part of the outer wall is provided with a top limit stop boss and a bottom limit stop boss; a vertical channel, a horizontal channel and a valve core mounting hole are provided in the valve body and are in communication; an interface for connecting an exhaust pipe is provided at the outer end of the horizontal channel; a multi-threaded internal screw thread is provided on the inner wall of the valve core mounting hole; the multi-threaded internal screw thread is a three to five thread screw; the valve core comprises a valve core part and a plug with a first sealing ring; a knob and an elastic stop piece are provided on the valve core; the outer wall of the valve core part is a multi-threaded external screw thread matched with the internal screw thread, at least two vertical guide through grooves are vertically spaced apart on the outer wall of the valve core part, and a communication groove formed by removing one of the external screw threads is horizontally provided; the communication groove communicates all the vertical guide through grooves; the elastic stop piece can be stopped by the top limit stop boss and the bottom limit stop boss in the natural state; when the valve core is installed in the valve body and the knob is rotated to drive the valve core to rise and fall within the range between the top limit stop boss and the bottom limit stop boss, the first sealing ring of the plug can block and unblock the vertical channel.

2. The exhaust valve of claim 1, wherein: the top limit stop boss and the bottom limit stop boss each comprise a straight stop surface and an arc-shaped guide sliding surface; the elastic stop piece can slide along the guide sliding surface of the top limit stop boss and elastically deform after the action of the guide sliding surface and then slide into the stop piece movable space formed by the two straight stop surfaces of the top limit stop boss and the bottom limit stop boss.

3. The exhaust valve of claim 2, wherein: a second sealing ring is provided on the valve core to prevent water from leaking out of the upper end of the valve core mounting hole.

4. The exhaust valve according to claim 1 or 2 or 3, characterized in that: the vertical channel of the valve body and the valve core mounting hole are vertically connected.

5. The exhaust valve according to claim 1 or 2 or 3, characterized in that: the valve core mounting hole of the valve body is obliquely arranged and is connected to the vertical channel at an obtuse angle; a pressure gauge is provided on the valve body and is in communication with the vertical channel.

6. The exhaust valve of claim 5, wherein: an anti-loosening stop boss is provided on the outer wall of the upper part of the valve body and is located beside the bottom limit stop boss.

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