Water supply valve with blowdown function

Abstract

The invention discloses a water supply valve with a pollution discharge function, relates to the technical field of valves, and aims to solve the problems of tedious installation, inconvenience in maintenance and the like caused by the fact that an existing water supply system needs to be combined with multiple components to realize the functions of stopping, filtering and pollution discharge. The water supply valve comprises a stop valve, a filtering device and a blow-down valve, wherein the stop valve comprises a valve body, a flashboard, a valve rod and a hand wheel; the filter device is detachably connected to the right side of the gate plate of the valve body and comprises a filter screen and a valve cover, the valve cover is in bolted connection with the valve body, the filter screen is clamped and fixed through a mounting groove formed by splicing the valve body and an annular groove of the valve cover, and an elastic sealing ring is arranged on the edge of the filter screen; the blow-down valve is arranged on the lower side of the valve body and located on the left side of the filtering device. The valve body is provided with a pit corresponding to the blow-down valve. The flashboard is wrapped by a rubber sealing layer, and the hand wheel is provided with anti-slip lines. The sewage draining device integrates multiple functions, simplifies the installation process, is efficient and thorough in sewage draining, excellent in sealing performance, convenient to maintain and suitable for municipal water supply, industrial circulating water and other pipeline systems.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a water supply valve with a sewage function. BACKGROUND

[0002] In municipal water supply, industrial circulating water and other pipeline systems, the water supply valve is the core component for controlling the on-off of water flow. The water supply valves widely used in the market at present are mostly ordinary stop valves with single stop function, which can only realize the on-off control of water flow and cannot filter impurities in water. If the stop, filtration and sewage functions need to be realized at the same time, a plurality of independent components such as stop valves, filters and sewage valves need to be installed in series on the pipeline.

[0003] The above-mentioned multi-component combined installation method has many defects: first, the installation is complicated, the connection ports of the plurality of components need to be precisely aligned, a lot of installation time is consumed, and the efficiency is low; second, the space occupied is large, and the adaptability to narrow installation environment is poor; third, the number of pipeline connection points increases, the risk of water leakage is significantly improved, and the maintenance cost is increased; fourth, it is inconvenient to maintain, when a component fails or the filter needs to be cleaned, a plurality of upstream valves need to be closed in sequence, and a plurality of connection parts need to be disassembled, which is complicated and affects normal water supply.

[0004] In view of the deficiencies of the multi-component combined use in the prior art, there is an urgent need for a water supply valve integrating the functions of stop, filtration and sewage in one, so as to simplify the installation process, reduce the occupied space and reduce the maintenance cost. SUMMARY

[0005] The main purpose of the present application is to provide a water supply valve with a sewage function, so as to effectively solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides a water supply valve with a sewage function, comprising a stop valve, a filter device and a sewage valve; the stop valve comprises a valve body, a gate plate, a valve stem and a hand wheel; the filter device is arranged on the right side of the gate plate of the valve body, and the filter device is detachably connected with the valve body, the water flow direction flows from left to right through the gate plate and then enters the filter device, and the impurities in the water flow are intercepted by the filter device; the sewage valve is arranged on the lower side of the valve body and located on the left side of the filter device, the sewage valve is in communication with the inner cavity of the valve body, and is used for discharging the filtered and intercepted impurities.

[0007] Further, the sewage valve is a ball valve.

[0008] Further, the valve body is provided with a downwardly recessed pit at the installation position of the sewage valve, the pit is in communication with the inlet of the sewage valve, the depth of the pit is 5-15 mm, the inner diameter of the pit is adapted to the inner diameter of the inlet of the sewage valve, the filtered and intercepted impurities can be stored in the pit, and the impurities floating with the water flow can be avoided to cause incomplete sewage.

[0009] Further, the outer side of the gate plate is wrapped with a rubber sealing layer, the thickness of the rubber sealing layer is 2-5mm, which can effectively enhance the sealing performance between the gate plate and the valve body, prevent water leakage, and improve the on-off reliability of the stop valve.

[0010] Further, the filter device comprises a filter screen and a valve cover; the valve body is provided with a radial hole corresponding to the installation position of the filter device, the valve cover is covered on the upper side of the radial hole and is fixedly connected with the valve body through bolts; the inner cavity of the valve body is provided with a semicircular valve body annular groove corresponding to the position of the radial hole, the lower side of the valve cover is provided with a semicircular valve cover annular groove matched with the valve body annular groove, and the two are spliced to form a closed circular mounting groove, and the filter screen is clamped in the circular mounting groove. The detachable structure facilitates the replacement or cleaning of the filter screen by detaching the valve cover later, and reduces the maintenance difficulty.

[0011] Further, the edge of the filter screen is provided with an elastic sealing ring, the elastic sealing ring is clamped between the circular mounting groove and the filter screen, the elastic sealing ring is made of silica gel material and has good elasticity and water resistance, and the sealing performance of the filter screen and the mounting groove can be enhanced to prevent impurities from leaking from the gap.

[0012] Further, the outer peripheral wall of the hand wheel is provided with an annular anti-skid pattern, the valve rod and the hand wheel are connected and fixed through a flat key, the annular anti-skid pattern can improve the holding friction force during operation, and the flat key connection ensures the transmission stability of the hand wheel and the valve rod.

[0013] Advantages of the present application 1. Integration of multiple functions: the present application integrates the functions of stopping, filtering and pollution discharge in a single valve body structure, without the need for connecting multiple independent components in series on the pipeline, simplifying the installation process, reducing the installation time, and greatly reducing the pipeline connection points and the risk of water leakage.

[0014] 2. Efficient and complete pollution discharge: by setting a matching pit at the position of the pollution discharge valve, the filtered impurities can be stored in the pit, avoiding the diffusion of impurities with water flow, and the impurities can be quickly discharged when the pollution discharge valve is opened, improving the pollution discharge effect; and the gate plate can be closed to isolate the upstream water flow during pollution discharge, without the need to interrupt the entire water supply system, improving the use convenience.

[0015] 3. Excellent sealing performance: the rubber sealing layer on the outer side of the gate plate can effectively fill the gap between the gate plate and the valve body, enhance the sealing performance, prevent water leakage, ensure the on-off reliability of the stop valve, and be suitable for high-pressure water supply scenes.

[0016] 4. Convenient maintenance: the filter device adopts a detachable valve cover and valve body connection structure, which can be easily replaced or cleaned by detaching the bolts to open the valve cover later, without the need to disassemble the entire valve, reducing the maintenance cost and workload.

[0017] 5. Reliable Filter Sealing: The elastic sealing ring on the edge of the filter screen can tightly fill the gap between the filter screen and the mounting groove, preventing impurities from leaking through the gap and ensuring the filtration effect; at the same time, the silicone sealing ring has excellent water resistance and a long service life.

[0018] 6. Convenient and stable operation: The annular anti-slip texture on the outer circumference of the handwheel increases grip friction and prevents slippage during operation; the keyed connection between the valve stem and the handwheel ensures stable transmission and prevents loosening during operation. Attached Figure Description

[0019] Appendix Figure 1 This is a cross-sectional view of the structure of the present invention; Appendix Figure 1 In the middle: 1-valve body, 2-valve cover, 3-valve cover annular groove, 4-bolt, 5-filter screen, 6-valve body annular groove, 7-gate, 8-valve stem, 9-handwheel, 10-drain valve, 11-recess, 12-rubber sealing layer, 13-elastic sealing ring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] As attached Figure 1 As shown, the present invention provides a water supply valve with a sewage discharge function, including a shut-off valve, a filter device, and a sewage discharge valve 10; the shut-off valve includes a valve body 1, a gate 7, a valve stem 8, and a handwheel 9. The valve body 1 is made of ductile iron, which has high strength and corrosion resistance; the gate 7 is wrapped with a 3mm thick rubber sealing layer 12, which is made of nitrile rubber and has excellent water resistance and sealing performance, which can effectively enhance the sealing effect between the gate 7 and the valve body 1 and prevent water leakage; the outer peripheral wall of the handwheel 9 is provided with annular anti-slip texture, and the valve stem 8 and the handwheel 9 are fixed by a flat key connection. The annular anti-slip texture increases the grip friction, and the flat key connection ensures stable transmission.

[0022] The filter device is arranged at the right side of the gate plate 7 of the valve body 1, and water flows from left to right through the gate plate 7 and then enters the filter device; the filter device comprises a filter screen 5 and a valve cover 2, the valve body 1 is provided with a radial hole corresponding to the mounting position of the filter device, the valve cover 2 is covered on the upper side of the radial hole and is fixedly connected with the valve body 1 through four M8 type bolts 4, so that detachable connection is realized; the inner cavity of the valve body 1 is provided with a semicircular valve body annular groove 6 corresponding to the position of the radial hole, the lower side of the valve cover 2 is provided with a semicircular valve cover annular groove 3 matched with the valve body annular groove 6, and the two are spliced to form a closed circular mounting groove, the filter screen 5 is clamped in the circular mounting groove, the filter screen 5 is made of stainless steel and has a pore size of 0.5 mm, so that the filter screen 5 can effectively intercept impurities such as silt and rust in water; the edge of the filter screen 5 is provided with an elastic sealing ring 13 made of silica gel, which is clamped between the circular mounting groove and the filter screen 5, so that the filter screen 5 is sealingly matched with the mounting groove, and leakage of impurities from the gap is prevented.

[0023] The blowdown valve 10 is arranged at the lower side of the valve body 1 and located at the left side of the filter device, the blowdown valve 10 adopts a ball valve structure and is communicated with the inner cavity of the valve body 1; the valve body 1 is provided with a downwardly recessed pit 11 at the mounting position of the blowdown valve 10, the pit 11 is communicated with the inlet of the blowdown valve 10, the depth of the pit 11 is 10 mm, and the inner diameter of the pit 11 is matched with the inner diameter of the inlet of the blowdown valve 10, so that the impurities intercepted by the filter device can be stored in the pit 11, and the impurities can be prevented from floating with water flow.

[0024] The working process of the present application is as follows: when normal water supply, rotate the hand wheel 9 to drive the valve rod 8 to rise, the gate plate 7 is opened, the water flow from left to right through the gate plate 7 and then enters the filter device, after the filter screen 5 filters and intercepts the impurities, the clean water flow flows to the downstream of the pipeline; when the blowdown is needed, the hand wheel 9 can be rotated to close the gate plate 7, the upstream water flow is isolated, then the blowdown valve 10 is opened, the impurities stored in the pit 11 under the action of gravity and residual water flow are discharged through the blowdown valve 10; when the filter screen 5 needs to be cleaned or replaced, the bolts 4 are disassembled to open the valve cover 2, the filter screen 5 is taken out for cleaning or replacement, and after the replacement is completed, the valve cover 2 is re-covered and the bolts 4 are tightened.

[0025] Although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A water supply valve with a sewage discharge function, characterized in that: It includes a shut-off valve, a filter device, and a drain valve; the shut-off valve includes a valve body, a gate, a valve stem, and a handwheel; the filter device is located on the right side of the gate of the valve body, and the filter device is detachably connected to the valve body, with water flowing from left to right through the gate and into the filter device.

2. A water supply valve with a sewage discharge function according to claim 1, characterized in that: The drain valve is a ball valve, located on the lower side of the valve body and on the left side of the filter device. The drain valve is connected to the inner cavity of the valve body and is used to discharge impurities intercepted by the filter device.

3. A water supply valve with a sewage discharge function according to claim 2, characterized in that: The valve body has a downward recessed pit at the installation position corresponding to the drain valve. The pit is connected to the inlet of the drain valve. The depth of the pit is 5-15mm, and the inner diameter is adapted to the inner diameter of the drain valve inlet. It is used to centrally store the impurities filtered and intercepted.

4. A water supply valve with a sewage discharge function according to claim 1, characterized in that: The gate is wrapped with a rubber sealing layer with a thickness of 2-5mm, which is used to enhance the sealing performance between the gate and the valve body.

5. A water supply valve with a sewage discharge function according to claim 1, characterized in that: The filtering device includes a filter screen and a valve cover; the valve body has a radial hole corresponding to the installation position of the filtering device, the valve cover is fitted onto the upper side of the radial hole and fixedly connected to the valve body by bolts; the inner cavity of the valve body has a semi-circular valve body annular groove corresponding to the radial hole position, the lower side of the valve cover has a semi-circular valve cover annular groove adapted to the valve body annular groove, the valve body annular groove and the valve cover annular groove are spliced ​​together to form a closed circular mounting groove, and the filter screen is clamped in the circular mounting groove.

6. A water supply valve with a sewage discharge function according to claim 5, characterized in that: The filter screen is provided with an elastic sealing ring at its edge. The elastic sealing ring is fitted between the circular mounting groove and the filter screen to enhance the sealing performance between the filter screen and the mounting groove and prevent impurities from leaking out from the gap.

7. A water supply valve with a sewage discharge function according to claim 1, characterized in that: The outer peripheral wall of the handwheel is provided with anti-slip texture, and the valve stem is fixed to the handwheel by a key connection.

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