Angle type stop and check valve

Abstract

The invention relates to the technical field of valves, in particular to an angle type stop and check valve. Comprising a hand wheel, a valve cover, a valve body, a valve clack assembly and a valve rod. The valve body is of a 90-degree right-angle structure, a middle opening is formed in the corner, and a valve deck, a valve rod, a hand wheel and a filler pressing plate are arranged on the middle opening. The valve clack assembly comprises a valve clack and a valve clack guide rail sleeve; a round groove is formed in the valve body on the lower side of the middle opening, a water inlet hole is formed in the center of the round groove and communicated with a water inlet of the valve body, the valve clack guide rail sleeve is cylindrical and sleeved in the middle opening and the round groove, the valve clack is of a barrel-shaped structure, and the barrel bottom is slidably sleeved in the valve clack guide rail sleeve towards the direction of the hand wheel. A valve body sealing gasket is arranged between the lower end of the valve clack guide rail sleeve and the valve body, and a valve body sealing ring is arranged at the lower end of the valve clack guide rail sleeve. And a valve clack sealing ring is arranged between the valve body sealing ring and the valve clack. The valve clack is provided with a pit at the barrel bottom, and the bottom end of the valve rod is movably inserted into the pit. An annular groove is formed in the side face of the valve clack guide rail sleeve, a water inlet hole is formed in the groove, and a filter screen is arranged outside the water inlet hole. A lower plug screw and an upper plug screw are arranged on the water inlet and outlet sides of the valve body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve, in particular to an angle type stop and check valve. BACKGROUND

[0002] At present, the stop valve usually comprises a valve body, a valve clapper and a valve rod for driving the valve clapper to move linearly up and down, the valve body is provided with an isolation inner wall with an opening, the two sides of the isolation inner wall form an inlet cavity and an outlet cavity respectively, the inlet cavity and the outlet cavity are communicated through the opening, the valve rod comprises an inner part arranged in the valve body and an outer part exposed outside the valve body, the inner part of the valve body is connected with the valve clapper in linkage at the other end opposite to the outer part, and the valve clapper is arranged at the communication position of the inlet cavity and can be arranged in abutment with the upper sealing surface of the isolation inner wall to form a sealing connection. The stop valve of the prior art has the following problems in use: The stop valve of the prior art can only be manually controlled to realize the stop and opening functions, and cannot realize the function of the check valve. When used in the pipeline system, sometimes the function of the stop valve is required, and sometimes the function of the check valve is required. In order to realize the above functions, two pipelines are connected in parallel in the prior art, one pipeline is provided with a first stop valve, and the other pipeline is connected in series with a second stop valve and a check valve. When the stop function is required, the second stop valve is closed, and the function of the stop valve is realized by adjusting the first stop valve. When the check function is required, the first stop valve is closed, the second stop valve is opened, and the check function is realized by the check valve. By connecting two pipelines in parallel and arranging two stop valves and a check valve, the complexity of the pipeline connection is increased, the actual use cost is also increased, and the maintenance is inconvenient, which cannot meet the needs of the actual working conditions.

[0003] The present application provides an angle type stop and check valve with multiple functions such as stop, check and flow regulation, which can solve the above problems. SUMMARY

[0004] The main purpose of the present application is to provide an angle type stop and check valve to effectively solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application adopts the following technical scheme: an angle type stop and check valve, comprising a hand wheel, a valve cover, a valve body, a valve clapper assembly and a valve rod; the valve body is a 90-degree right angle structure, a middle opening is arranged at the corner, the valve cover is arranged on the middle opening, the valve cover is fixed on the valve body by studs, elastic pads and nuts, a middle opening gasket is arranged between the valve cover and the valve body, a valve rod is arranged at the center of the valve cover, a door-shaped bracket is arranged on the upper side of the valve cover, a valve rod nut is arranged at the top middle of the door-shaped bracket, the valve rod nut is fixed on the door-shaped bracket by a set screw, the valve rod passes through the valve rod nut, the top end of the valve rod is provided with a hand wheel, and the valve rod is fixed with a flat pad and a hand wheel fixing nut. The upper side of the bonnet is provided with a packing pressing plate, which is fixed on the bonnet by bolts and heavy hexagonal nuts, and the lower side of the packing pressing plate is filled with packing between the bonnet and the valve stem, and a packing pressing sleeve is arranged between the packing and the packing pressing plate; The valve disc assembly comprises a valve disc and a valve disc guide sleeve; a circular groove with the same diameter as the middle port is arranged on the valve body below the middle port, a water inlet hole is arranged at the center of the circular groove and communicates with the water inlet of the valve body, the valve disc guide sleeve is cylindrical and is sleeved in the middle port and the circular groove, and the valve disc is barrel-shaped and is slidably sleeved in the inner cavity of the valve disc guide sleeve with the barrel bottom facing the hand wheel.

[0006] Preferably, a valve body sealing ring gasket is arranged between the lower end of the valve disc guide sleeve and the valve body.

[0007] Preferably, a stepped hole is arranged at the lower end of the valve disc guide sleeve, and a valve body sealing ring is arranged in the stepped hole.

[0008] Preferably, the valve body sealing ring is a short pipe structure with an annular boss at the outer side of the top end, and the annular boss is sleeved in the stepped hole at the lower end of the valve disc guide sleeve.

[0009] Preferably, a valve disc sealing ring is arranged between the valve body sealing ring and the valve disc.

[0010] Preferably, the valve disc sealing ring is a short pipe structure with an annular boss at the outer side of the middle, the annular boss is sleeved in the inner cavity of the valve body sealing ring, and the annular boss is sleeved in the stepped hole arranged at the lower end of the valve disc.

[0011] Preferably, the barrel-shaped valve disc is provided with a pit at the barrel bottom, and the bottom end of the valve stem is semispherical and is movably inserted in the pit at the barrel bottom of the valve disc.

[0012] Preferably, an annular groove is arranged at the side of the valve disc guide sleeve facing the water inlet of the valve body, a plurality of square water inlet holes are arranged in the groove, and a cylindrical filter screen is sleeved outside the square water inlet holes.

[0013] Preferably, a water outlet is arranged at the water inlet side of the valve body and is blocked by a lower plug, and a water inlet is arranged at the water outlet side of the valve body and is blocked by an upper plug.

[0014] Preferably, when the valve body is of a straight-through structure, the valve disc assembly is also applicable.

[0015] Preferably, the upper plug is replaced by a flowmeter or a pressure gauge to monitor the flow and pressure, and the lower plug is opened to flush the sewage by water inlet from the upper plug.

[0016] The beneficial effects of the present application are: 1. The valve disc of the stop valve has a check function; when the water stops, the water in the water pipe flows back, the valve disc falls due to gravity, seals the water inlet, and at the same time, the backflow of water increases the pressure on the valve disc and the valve disc sealing ring, so as to play a check role; 2. By adjusting the tightening distance of the valve rod, the opening height of the valve disc can be adjusted, and then the opening amount of the water inlet hole on the lower side of the valve disc guide rail sleeve is adjusted, so as to adjust the flow; 3. The filter screen on the lower side of the valve disc guide rail sleeve can filter water, and has a filtering function; 4. The upper screw plug is replaced by a flowmeter and a pressure gauge, so as to monitor the flow and pressure; 5. Open the lower screw plug, and flush the sewage by water inlet from the upper screw plug. (The impurities in the filter screen cannot be flushed) 6. The valve can be installed in a horizontal pipeline or at a right angle. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a structural schematic diagram of the present application. Figure 1 FIG. 1 is a structural schematic diagram of the present application.

[0018] FIG. 2 is a structural schematic diagram of the valve disc guide rail sleeve of the present application. Figure 2 FIG. 2 is a structural schematic diagram of the valve disc guide rail sleeve of the present application.

[0019] FIG. 3 is a structural schematic diagram of the valve disc of the present application. Figure 3 FIG. 3 is a structural schematic diagram of the valve disc of the present application. Figure 2 FIG. 3 is a structural schematic diagram of the valve disc of the present application.

[0020] FIG. 4 is a structural schematic diagram of the valve disc sealing ring of the present application. Figure 4 FIG. 4 is a structural schematic diagram of the valve disc sealing ring of the present application.

[0021] FIG. 5 is a structural schematic diagram of the valve body sealing ring of the present application. Figure 5 FIG. 5 is a structural schematic diagram of the valve body sealing ring of the present application.

[0022] FIG. 6 is a structural schematic diagram of the valve body of the present application. Figure 6 FIG. 6 is a structural schematic diagram of the valve body of the present application.

[0023] FIG. 7 is a structural schematic diagram of the present application. Figures 1-6 In FIG. 7, valve body 1, valve body sealing ring gasket 2, valve body sealing ring 3, valve disc sealing ring 4, valve disc 5, valve disc guide rail sleeve 6, middle port gasket 7, valve cover 8, packing press sleeve 9, packing press plate 10, bolt 11, heavy hexagonal nut 12, valve rod nut 13, valve rod 14, hand wheel 15, flat washer 16, hand wheel fixing nut 17, locking screw 18, packing 19, stud 20, spring washer 21, nut 22, lower screw plug 23, upper screw plug 24, filter screen 25, water inlet hole 26, recess 27. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] The application relates to a valve, and particularly relates to a 90-degree angle type stop check valve. Figures 1-6 As shown in the drawings, the 90-degree angle type stop check valve comprises a hand wheel 15, a valve cover 8, a valve body 1, a valve clapper assembly and a valve rod 14; the valve body 1 is of a 90-degree angle type structure, a middle port is arranged at the corner, the middle port is provided with the valve cover 8, the valve cover 8 is fixed on the valve body 1 through studs 20, elastic pads 21 and nuts 22, a middle port gasket 7 is arranged between the valve cover 8 and the valve body 1, the valve cover 8 is provided with the valve rod 14 at the center, a door-shaped support is arranged on the upper side of the valve cover 8, a valve rod nut 13 is arranged at the top end of the door-shaped support, the valve rod nut 13 is fixed on the door-shaped support through a locking screw 18, the valve rod 14 passes through the valve rod nut 13, the top end of the valve rod 14 is provided with the hand wheel 15, and the valve rod 14 is fixed with the valve rod 14 through a flat pad 16 and a hand wheel fixing nut 17. The upper side of the valve cover 8 is provided with a packing pressing plate 10, the packing pressing plate 10 is fixed on the valve cover 8 through bolts 11 and heavy hexagonal nuts 12, the valve cover 8 between the lower side of the packing pressing plate 10 and the valve rod 14 is filled with packing 19, and the packing 19 is provided with a packing pressing sleeve 9 between the packing 19 and the packing pressing plate 10. The valve clapper assembly comprises a valve clapper 5 and a valve clapper guide rail sleeve 6; a circular groove which is concentric with the middle port and has the same diameter is arranged on the lower side of the valve body 1, a water inlet hole is arranged at the center of the circular groove and is communicated with a water inlet of the valve body 1, the valve clapper guide rail sleeve 6 is in a cylindrical shape, is sleeved in the middle port and the circular groove, and the valve clapper 5 is in a barrel structure, the bottom of the barrel is slidably sleeved in the inner cavity of the valve clapper guide rail sleeve 6.

[0026] A valve body sealing ring gasket 2 is arranged between the lower end of the valve clapper guide rail sleeve 6 and the valve body.

[0027] A stepped hole is arranged at the lower end of the valve clapper guide rail sleeve 6, and a valve body sealing ring 3 is arranged in the stepped hole.

[0028] The valve body sealing ring 3 is in a short pipe structure and is provided with an annular boss at the outside of the top end, and the annular boss is sleeved in the stepped hole at the lower end of the valve clapper guide rail sleeve 6.

[0029] A valve clapper sealing ring 4 is arranged between the valve body sealing ring 3 and the valve clapper 5.

[0030] The valve clapper sealing ring 4 is in a short pipe structure and is provided with an annular boss at the outside of the middle, the annular boss is sleeved in the inner cavity of the valve body sealing ring 3, and the annular boss is sleeved in the stepped hole arranged at the lower end of the valve clapper 5.

[0031] The barrel structure of the valve clapper 5 is provided with a pit 27 at the bottom of the barrel, the bottom end of the valve rod 14 is in a semispherical shape, and is movably inserted in the pit 27 at the bottom of the barrel of the valve clapper 5.

[0032] An annular groove is arranged at the side surface of the valve clapper guide rail sleeve 6 which faces the water inlet of the valve body 1, a plurality of square water inlet holes 26 which are uniformly distributed are arranged in the annular groove, and a cylindrical filter screen 25 is sleeved outside the square water inlet holes 26.

[0033] The valve body 1 is provided with a water outlet on the water inlet side, which is blocked by the lower screw plug 23, and a water inlet on the water outlet side, which is blocked by the upper screw plug 24.

[0034] When the valve body 1 is in a straight-through structure, the valve disc assembly is also applicable.

[0035] The upper screw plug 24 is replaced by a flowmeter or a pressure gauge to monitor the flow and pressure, and the lower screw plug 23 is opened to flush the sewage by water inlet from the upper screw plug 24.

[0036] The beneficial effects of the present application are as follows: 1. The valve disc 5 of the stop valve has a check function. When the water inlet stops, the water in the water pipe flows back, the valve disc 5 falls due to gravity to seal the water inlet, and the backflow of water increases the pressure of the valve disc 5, so that the valve disc 5 is pressed tightly with the valve disc sealing ring 4 to achieve the check function; 2. By adjusting the tightening distance of the valve stem, the opening height of the valve disc 5 can be adjusted, and then the opening amount of the water inlet hole 26 on the lower side of the valve disc guide rail sleeve 6 is adjusted to achieve the function of adjusting the flow; 3. The filter screen 25 on the lower side of the valve disc guide rail sleeve 6 can filter the water, which has the function of filtering; 4. The upper screw plug 24 is replaced by a flowmeter or a pressure gauge to monitor the flow and pressure; 5. The lower screw plug 23 is opened to flush the sewage by water inlet from the upper screw plug 24. (The impurities filtered in the filter screen cannot be flushed out) 6. The valve can be installed horizontally or at a right angle.

[0037] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some 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. An angle-type shut-off and check valve, characterized in that: It includes a handwheel, valve cover, valve body, valve disc assembly, and valve stem; the valve body has a 90-degree right-angle structure with a central opening at the corner, and a valve cover is provided on the central opening. The valve cover is fixed to the valve body with studs, spring washers, and nuts. A central opening gasket is provided between the valve cover and the valve body. The valve stem is provided at the center of the valve cover. A U-shaped bracket is provided on the upper side of the valve cover. A valve stem nut is provided at the top center of the U-shaped bracket. The valve stem nut is fixed to the U-shaped bracket with a set screw. The valve stem passes through the valve stem nut. A handwheel is provided at its top. The handwheel is fixed to the valve stem with a flat washer and a handwheel fixing nut. A packing pressure plate is provided on the upper side of the valve cover, which is fixed to the valve cover with bolts and heavy hexagonal nuts. The valve cover and valve stem are filled with packing on the lower side of the packing pressure plate, and a packing sleeve is provided between the packing and the packing pressure plate. The valve assembly includes a valve disc and a valve disc guide sleeve; a circular groove with the same diameter as the center opening is provided on the valve body below the center opening, and a water inlet hole is provided in the center of the circular groove, which communicates with the water inlet of the valve body; the valve disc guide sleeve is cylindrical and is fitted inside the center opening and the circular groove; the valve disc has a barrel-shaped structure, with the bottom of the barrel slidingly fitted inside the valve disc guide sleeve towards the handwheel.

2. The angle-type shut-off and check valve according to claim 1, characterized in that: A valve body sealing gasket is provided between the lower end of the valve disc guide sleeve and the valve body.

3. The angle-type shut-off and check valve according to claim 1, characterized in that: The lower end of the valve disc guide sleeve is provided with a stepped hole, and a valve body sealing ring is provided in the stepped hole. The valve body sealing ring is a short tubular structure with an annular boss on the outer side of the top, and the annular boss is fitted into the stepped hole at the lower end of the valve disc guide sleeve.

4. The angle-type shut-off and check valve according to claim 1, characterized in that: A valve disc sealing ring is provided between the valve body sealing ring and the valve disc.

5. The angle-type shut-off and check valve according to claim 4, characterized in that: The valve disc sealing ring is a short tubular structure with an annular boss on the outer side in the middle. The lower side of the annular boss is fitted into the inner cavity of the valve body sealing ring, and the upper side of the annular boss is fitted into the stepped hole provided at the lower end of the valve disc.

6. The angle-type shut-off and check valve according to claim 1, characterized in that: The valve disc of the barrel-shaped structure has a recess at the bottom of the barrel, and the bottom end of the valve stem is hemispherical, which is movably inserted into the recess at the bottom of the valve disc barrel.

7. The angle-type shut-off and check valve according to claim 1, characterized in that: The valve disc guide sleeve has an annular groove on the side facing the valve body inlet. Several evenly distributed square inlet holes are provided in the groove, and a cylindrical filter screen is fitted on the outside of the square inlet holes.

8. The angle-type shut-off and check valve according to claim 7, characterized in that: The valve body has a drain port on the water inlet side, which is blocked with a lower screw plug, and a water inlet on the water outlet side, which is blocked with an upper screw plug.

9. The angle-type shut-off and check valve according to claim 1, characterized in that: When the valve body has a straight-through structure, the structure of the valve disc assembly is also applicable.

10. The angle-type shut-off and check valve according to claim 1, characterized in that: Replace the upper plug with a flow meter and a pressure gauge to monitor flow and pressure; open the lower plug and allow water to enter through the upper plug for flushing and drainage.

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