阅读说明：本技术 一种带止回式球阀 (Ball valve with check function ) 是由 董服义 于 2019-12-03 设计创作，主要内容包括：本发明公开了一种带止回式球阀,包括具有介质流道的阀体、具有贯通流道的球形阀芯、与所述阀芯密封配合的密封座、用于驱动所述阀芯转动的阀杆及与所述阀杆相连的阀柄,所述密封座设于所述介质流道内,还包括用于供介质单向流经介质流道的止回芯,所述止回芯设于介质流道内。本发明通过将止回芯直接安装到介质流道当中,其安装方便,且安装速度快；同时整个阀门的体积小,在管路安装的过程中方便携带。(The invention discloses a ball valve with a check valve, which comprises a valve body with a medium flow passage, a spherical valve core with a through flow passage, a sealing seat in sealing fit with the valve core, a valve rod for driving the valve core to rotate, a valve handle connected with the valve rod, a check core for allowing a medium to flow through the medium flow passage in a one-way manner, and a check core arranged in the medium flow passage. The check core is directly arranged in the medium flow channel, so that the check core is convenient to install and high in installation speed; meanwhile, the whole valve is small in size and convenient to carry in the pipeline installation process.)

1. The utility model provides a take check formula ball valve, including valve body (1) that has medium runner (10), spherical case (3) that have through runner (30), with case (3) seal fit's seal receptacle (9), be used for driving case (3) pivoted valve rod (4) and with valve handle (5) that valve rod (4) link to each other, seal receptacle (2) are located in medium runner (10), its characterized in that: the check valve also comprises a check core (6) for allowing a medium to flow through the medium flow channel (10) in a one-way mode, wherein the check core (6) is arranged in the medium flow channel (10).

2. The check ball valve of claim 1, wherein: a filter structure (7) for filtering media is arranged in the medium flow passage (10), and the media are filtered by the filter structure (7) and then flow through the non-return core (6).

3. The check ball valve of claim 1, wherein: the valve body (1) is provided with a joint part (8) for connecting with a plastic pipe.

4. The check ball valve of claim 1, wherein: the non-return core (6) comprises a core seat (61), a blocking piece (62) capable of blocking the core seat (61), a connecting sleeve (64) and an elastic piece (63) used for pushing the blocking piece (62) to block the core seat (61), and the core seat (61) is in limit fit with the valve body (1).

5. The check ball valve of claim 4, wherein: the connecting sleeve (64) is provided with a clamping part (611) with an elastic structure, and the inner wall of the medium flow channel (10) is provided with a limiting part (101) which is abutted against the clamping part (611).

6. The check ball valve of claim 4, wherein: and a blocking part (102) is arranged on the inner wall of the medium flow channel (10), and the core seat (61) is abutted against the blocking part (102).

7. The check ball valve of claim 2, wherein: the filtering structure (7) is a filter screen arranged in the medium flow passage (10).

8. A check ball valve as claimed in claim 3, wherein: the joint component (8) comprises a pipe joint (81) capable of being in hot-melt connection with a plastic pipe and a connecting nut (82) movably connected with the pipe joint (81), and the connecting nut (82) is in threaded connection with the valve body (1).

9. The check ball valve of claim 8, wherein: the pipe joint (81) is provided with a first convex ring (821), and the connecting nut (82) is provided with a second convex ring (811) in limit fit with the first convex ring (821).

10. The check ball valve of claim 9, wherein: the end part of the valve body (1) is provided with a positioning groove (100), and a sealing ring (103) which is abutted to the pipe joint (81) is arranged in the positioning groove (100).

Technical Field

The invention belongs to the technical field of valve manufacturing, and particularly relates to a ball valve with a check valve.

Background

In the process of installing the water meter, a ball valve or a gate valve is required to be installed on a pipeline connected with the water meter to close or adjust the flow of water, meanwhile, in order to prevent the water meter from rotating due to the compression of water caused by pressure fluctuation, a check valve is required to be installed in front of the water meter to limit the backflow of water, in the installation process of the existing pipeline, a check valve is required to be installed in front of the water meter, and in order to facilitate the installation, the ball valve and the check valve are usually connected together on the existing pipeline and then are installed on the pipeline.

Because the ball valve and the check valve are two independent valves, when the pipeline is installed, the end part of the ball valve and the end part of the check valve are screwed together, or are connected together through a PPR pipe to form a valve component, and then the valve component is installed on the pipeline, the operation is very complicated in the process, the installation is very inconvenient, the time required by the installation is long, and the risk of water leakage exists after the installation is finished, so that the subsequent maintenance is required; and because two valves are adopted for installation, the cost of the whole valve component is high.

Disclosure of Invention

The invention provides a check ball valve which is convenient to install and saves cost in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a ball valve with a check function comprises a valve body with a medium flow channel, a spherical valve core with a through flow channel, a sealing seat in sealing fit with the valve core, a valve rod used for driving the valve core to rotate, a valve handle connected with the valve rod, a check core used for enabling a medium to flow through the medium flow channel in a one-way mode and arranged in the medium flow channel, and a valve body with a through flow channel.

According to the invention, the check core is directly installed in the medium flow channel, so that only the ball valve is needed to be installed on a pipeline independently, the installation is convenient, and the installation speed is high; meanwhile, the whole valve is small in size and convenient to carry in the pipeline installation process; meanwhile, the check core is directly arranged in the medium flow passage, and only one valve body needs to be installed on the pipeline, so that the cost for installing the valve on the pipeline is reduced; and the non-return core is arranged in the medium flow passage, so that liquid leakage cannot occur.

Preferably, a filter structure for filtering the medium is arranged in the medium flow channel, and the medium is filtered by the filter structure and then flows through the non-return core; through setting up filtration to the medium is earlier through filtering, then flows through the non return core again, and the liquid that consequently flows through the non return core is pure, can not have impurity to be preserved in the middle of the non return core, therefore after the shutoff of guarantee non return core, its leakproofness can not receive the influence of impurity, the non return effect of guarantee non return core.

Preferably, the valve body is provided with a joint member for connecting with a plastic pipe; the ball valve and the plastic pipe can be conveniently subjected to hot melting connection by arranging the joint component.

Preferably, the check core comprises a core seat, a blocking piece capable of blocking the core seat, a connecting sleeve and an elastic piece for pushing the core seat, and the core seat is in limit fit with the valve body; the core seat can be contacted with the inner wall of the valve body to realize primary sealing, and fluid cannot flow out from a gap between the core seat and the inner wall of the valve body; the valve core body can plug the opening at the center of the valve core seat; the connecting piece positions the valve core body and keeps the movable direction of the valve core body stable and unchanged.

Preferably, the connecting sleeve is provided with a clamping part with an elastic structure, and the inner wall of the medium flow channel is provided with a limiting part which is abutted against the clamping part; the clamping part is matched with the limiting part, the core seat cannot be reversely separated from the medium flow channel when the core seat is pressed into the medium flow channel, the core seat is stable under the impact of the fluid, and the core seat cannot move under the impact of the fluid.

Preferably, a blocking part is arranged on the inner wall of the medium flow channel, and the core seat is abutted with the blocking part; can block the core print through setting up the fender portion, consequently can support the core print after inserting the core print in the middle of by the medium runner to can be quick install the non return core, this mounting means is simple, and the assembly rate is fast.

Preferably, the filtering structure is a filter screen arranged in the medium flow passage; the filter structure is arranged to be a filter screen, the structure is simple, and the filter effect is good.

Preferably, the joint part comprises a pipe joint capable of being in hot-melt connection with the plastic pipe and a connecting nut movably connected with the pipe joint, and the connecting nut is in threaded connection with the valve body; the PP pipe and the pipe joint can be conveniently connected through arranging the pipe joint and the plastic pipe in a hot melting way; meanwhile, the valve body can be conveniently detached, and the impurities filtered out by the valve body can be cleaned.

Preferably, a first convex ring is arranged on the pipe joint, and a second convex ring which is in limit fit with the first convex ring is arranged on the connecting nut; the first convex ring and the second convex ring are arranged for limiting mutually, and the connecting nut can rotate relative to the pipe joint, so that the valve body is convenient to install and is also convenient to disassemble subsequently; and the valve handle can be conveniently positioned above the valve handle during installation, so that the handle can be conveniently rotated.

Preferably, a positioning groove is formed in the end part of the valve body, and a sealing ring which is abutted to the pipe joint is arranged in the positioning groove; can be spacing to the sealing ring through setting up the constant head tank, consequently at coupling nut with after the valve body links to each other, the sealing ring contacts with the coupling to after valve body and coupling nut link to each other, its leakproofness is high.

In conclusion, the check core is directly installed in the medium flow channel, so that the installation is convenient and the installation speed is high; meanwhile, the whole valve is small in size and convenient to carry in the pipeline installation process.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the valve body of the present invention.

Fig. 3 is a schematic view of the structure of the valve handle of the present invention.

FIG. 4 is a schematic view of a check core of the present invention.

Fig. 5 is an exploded view of the check core of the present invention.

Fig. 6 is a schematic structural view of a filter structure according to the present invention.

Fig. 7 is an exploded view of the filter structure of the present invention.

Fig. 8 is a schematic structural diagram of the first net body according to the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-8, a ball valve with check function comprises a valve body 1, a valve core 3, a sealing seat 2, a valve rod 4, a valve handle 5 and a check core 6, wherein the valve body 1 is a metal piece made of stainless steel or brass, a medium flow passage 10 is arranged in the valve body 1, and the medium flow passage 10 is a through cavity; the valve core 3 is a metal ball, the valve core 3 is arranged in the medium flow passage 10, and a through flow passage 30 is arranged on the valve core 3; the sealing seat 2 is a ceramic seat adhered in the medium flow channel 10, the valve core 3 is in contact with the sealing seat 2, when the valve core 3 rotates, the through flow channel 3 on the valve core 3 can be communicated with the medium flow channel 10, so that a medium flows out through the through flow channel 30 and the medium flow channel 10; the valve rod 4 is a metal rod, the lower part of the valve rod 4 is connected with the upper part of the valve core 3, and the upper part of the valve rod 4 extends out of the valve body 1; the valve handle 5 is a metal handle sleeved with a rubber sleeve, and the valve handle 5 is in rotation-stopping connection with the upper part of the valve rod 4, so that the valve handle 5 is rotated to drive the valve rod 4 to rotate, and the valve rod 4 can drive the valve core 3 to rotate; the valve rod 4 is provided with a limiting convex part, and the valve body 1 is provided with a convex part 105 which is used for abutting against the limiting convex part to limit the transitional rotation of the valve handle.

Specifically, the check core 6 comprises a core seat 61, a blocking piece 62, a connecting sleeve 64 and an elastic piece 63; the core seat 61 is a plastic block with the diameter of the longitudinal section the same as that of the medium flow channel 10, a through hole 610 is arranged in the middle of the core seat 61, and fluid can flow out of the through hole 610; a positioning concave ring 611 is arranged on the outer wall of the core base 61, the core base 61 is provided with a special-shaped connecting sleeve 64, the connecting sleeve 64 is a plastic sleeve, the front end of the connecting sleeve 64 penetrates into the core base 61, a circle of convex rings are respectively arranged on the outer wall of the end part of the connecting sleeve 64 and the inner wall of the core base 61, the connecting sleeve 64 is clamped to the outside force, the two convex rings are mutually limited, and therefore the connecting sleeve 64 cannot be separated; the rear part of the connecting sleeve 64 is provided with a plurality of liquid flowing openings 640, and the fluid can flow out from the liquid flowing openings 640; six elastic clamping parts 611 arranged at intervals are arranged on the connecting sleeve 64, the clamping parts 611 are plastic sheets integrally formed with the connecting sleeve 64, and the ends of the clamping parts 611 are tilted upwards.

The blocking piece 62 is arranged in the connecting sleeve 64, the blocking piece 62 comprises a blocking part and a limiting rod, the blocking part is an umbrella-shaped plastic block, the limiting rod is connected with the blocking part, one end of the limiting rod penetrates through the bottom of the connecting sleeve 64 and the other end is connected with the blocking part, the blocking part can block the through hole 610 of the core base 61, the elastic piece 63 is sleeved on the limiting rod, one end of the elastic piece 63 is contacted with the blocking part, the other end of the elastic piece 63 is abutted against the connecting sleeve 64, and the elastic piece 63 is a spring; the elastic member 63 urges the stopper against the core print 61.

A limiting part 101 and a blocking part 102 are arranged in the medium flow channel, the blocking part 102 is a circle of convex ring integrally formed with the valve body 1, the limiting part 101 is also a circle of convex ring integrally formed with the valve body 1, and a space is formed between the blocking part 102 and the limiting part 101 and is used for the check core 6 to be clamped in; specifically, one end of the core holder 61 abuts against the stopper 102, and the locking part 611 abuts against the stopper 101, thereby fixing the check core 6.

Further, a filter structure is further arranged in the medium flow passage 10, the filter structure 10 is a filter screen abutting against the inner wall of the medium flow passage, the filter structure 7 is located on one side of the valve core 3, the non-return core 6 is located on the other side of the gate plate, and in the process of flowing into the medium flow passage 10 from the rear end of the medium flow passage 10, liquid can be filtered through the filter structure 7 first, then flows through the bottom of the valve core 3, and then flows out through the non-return core 6.

In order to connect the check ball valve with a PP pipe, joint components 8 are respectively arranged at two ends of the valve body 1, each joint component 8 comprises a pipe joint 81 and a connecting nut 82, the pipe joint 81 is the PP pipe, the pipe joint 81 can be in hot-melt connection with a plastic pipe, the connecting nut 82 is a copper nut, and the connecting nut 82 is sleeved on the pipe joint 81; the pipe joint 81 is provided with a first convex ring 811, the first convex ring 811 is a circular ring integrated with the pipe joint 81, the inner wall of the connecting nut 82 is provided with a second convex ring 821, the first convex ring 811 is abutted against the second convex ring 821, so that the connecting nut 82 and the pipe joint 81 are movably connected, and the connecting nut 82 is screwed with the end part of the valve body 1.

Constant head tank 100 that the both ends of valve body 1 all were equipped with, constant head tank 100 for form in circular slot on the valve body 1 place sealing ring 103 in the middle of the constant head tank 100, sealing ring 103 is the rubber ring, works as after coupling nut 82 and valve body 1 link to each other, sealing ring 103 with coupling 81 looks butt.

Further, the filter screen comprises a first screen body 71 and a second screen body 72 connected with the first screen body 71, the first and second screen bodies are metal screens, and water entering the medium flow channel 10 is filtered by the first screen body 71 and then filtered by the second screen body 72; the first net body 71 is provided with a plurality of first open pores 710, the second net body 72 is provided with a plurality of second open pores 720, and the pore diameter of the first open pores 710 is larger than that of the second open pores 720, so that when the water body is filtered, the first net body performs coarse filtration on the water body, and then the second net body performs fine filtration; through carrying out coarse filtration and fine filtration to the water, two-layer filtration can separately filter aquatic large granule dirt and tiny particle dirt, therefore first dictyosome can filter the raw material area etc. of aquatic, and the mesh can not be plugged up in the guarantee raw material area.

A plurality of convex columns 73 with the upper parts and the lower parts both conical are arranged on the second net body 72, and the upper parts of the convex columns 73 extend out of the first openings 710; the convex column 73 extends out of the first opening 710, so when large particulate matters flow onto the first net body 71, the convex column 73 can resist the large particulate matters to prevent the first opening from being blocked, dirt can slide off from the convex column 73, meanwhile, the lower part of the convex column 73 is conical, when the dirt enters between the first net body and the second net body, the dirt can slide off through the lower part of the convex column, meanwhile, the lower part of the convex column is conical, the large distance between the first net body and the second net body is ensured, and therefore more dirt can be reserved; meanwhile, when the water flows through the first net body 71 and the second net body 72, the water flows smoothly, and the flow of the water flowing out through the ball valve is ensured to be constant; the upper end part of the convex column 73 is of an arc-shaped surface structure; when large-particle dirt contacts with the upper end of the convex column 73, the dirt slides downward along the upper end surface of the convex column 73, and the dirt remains at the bottom of the medium flow passage 10.

Specifically, the first opening hole 710 and the second opening hole 720 are octagonal holes, the water circulation amount of the octagonal first opening hole 710 is large, and due to the included angle formed on the first opening hole 710, part of dirt can be blocked when the water flows through the first opening hole 710.

The second net body 72 is provided with a second convex edge 728, the first net body 71 is provided with a first convex edge 718, the first convex edge 718 is provided with three L-shaped gaps 717, and the inner wall of the second convex edge 728 is provided with a fixing convex part 727 capable of being inserted into the gaps 717; when the first net body 71 and the second net body 72 are connected, the fixing protrusions 727 are inserted into the notches 717, and then the first net body 71 is rotated, thereby fixing the first net body 71 and the second net body 72.

The gap 717 has a first inner wall 715 and a second inner wall 716 symmetrical to the first inner wall 715, and one end of the first and second inner walls is connected, so that the first and second inner walls 715 and 716 form a V-shaped structure; through the connection mode, the fixing convex parts 727 are mutually squeezed and pressed with the first and second inner walls, so that when the first and second net bodies are fixed, the fixing convex parts 727 are clamped into the notches 717, and the first net body 71 and the second net body 72 can be firmly fixed; a plurality of elastic convex parts 729 formed by second convex edges 728 bulging are arranged on the outer wall of the second net body 72, and the convex parts 729 are in contact with the inner wall of the medium flow channel 10, so that the second net body 72 is clamped, and the first net body 71 and the second net body 72 are fixed; the fixing mode is simple, and the first net body 71 and the second net body 72 are guaranteed to be stable in the medium flow passage 10.

Further, a rod 724 having an end portion extending out of the medium flow path 10 is connected to the second net body 72, the first protruding edge 718 has a recess 714, and the rod 724 extends out of the medium flow path 10 through the recess 714.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.