阅读说明：本技术 一种水表的止回阀芯结构 (Check valve core structure of water meter ) 是由 张新忠 程文力 于 2019-12-03 设计创作，主要内容包括：本发明提供了一种水表的止回阀芯结构,属于机械技术领域。它解决了现有的水表止回效果差的问题。本水表的止回阀芯结构,包括止回阀片,所述止回阀片上具有凸出的阀杆套,所述阀杆套上还套设有采用弹性材料制成的密封垫片,所述密封垫片贴靠固定在所述止回阀片上,所述密封垫片上具有若干弹性柱,所述止回阀片上对应开设有若干通孔,若干弹性柱分别穿过对应的通孔。本止回阀片与水表之间形成了一个与涡流方向相反的抓地力,能够很好的消除涡流产生的冲击力,很好的防止整个止回阀芯在水流的冲击下发生旋转,保证密封效果和止回效果。(The invention provides a check valve core structure of a water meter, and belongs to the technical field of machinery. It has solved the poor problem of current water gauge non return effect. This check case structure of water gauge, including the check valve piece, convex valve rod cover has on the check valve piece, still the cover is equipped with the seal gasket that adopts elastic material to make on the valve rod cover, the seal gasket paste to lean on to be fixed on the check valve piece, a plurality of elasticity posts have on the seal gasket, a plurality of through-holes have been seted up to correspondence on the check valve piece, and a plurality of elasticity posts pass corresponding through-hole respectively. The grip force opposite to the vortex direction is formed between the check valve plate and the water meter, the impact force generated by the vortex can be well eliminated, the whole check valve core is well prevented from rotating under the impact of water flow, and the sealing effect and the check effect are guaranteed.)

1. The utility model provides a check case structure of water gauge, includes check valve piece (1), its characterized in that, convex valve rod cover (2) have on check valve piece (1), still the cover is equipped with seal gasket (3) that adopt elastic material to make on valve rod cover (2), seal gasket (3) are pasted and are fixed on check valve piece (1), a plurality of elasticity posts (3a) have on seal gasket (3), a plurality of through-holes (1a) have been seted up in correspondence on check valve piece (1), and a plurality of elasticity posts (3a) pass corresponding through-hole (1a) respectively.

2. A check valve core structure of a water meter according to claim 1, characterized in that the elastic columns (3a) are arranged obliquely with respect to the sealing gasket (3).

3. A check valve core structure of a water meter according to claim 2, characterized in that a plurality of through holes (1a) are distributed around the circumference of the valve rod sleeve (2), and a plurality of elastic columns (3a) are arranged obliquely in a counterclockwise direction or in a clockwise direction.

4. A check valve core structure of a water meter according to claim 3, characterized in that the through holes (1a) and the elastic columns (3a) are three and evenly distributed around the circumference of the valve stem sleeve (2).

5. A check valve core structure of a water meter according to any one of the claims 1-4, characterized in that the valve rod sleeve (2) is further sleeved with a pressing sleeve (4), and the valve rod sleeve (2) is further provided with a positioning piece for enabling the pressing sleeve (4) to press the sealing gasket (3) on the check valve plate (1).

6. The check valve core structure of the water meter according to claim 5, characterized in that the positioning member is a clamp spring (5), the valve rod sleeve (2) is provided with a clamping groove (2a), the clamp spring (5) is sleeved on the valve rod sleeve (2) and clamped in the clamping groove (2a), and the clamp spring (5) is pressed against the pressing sleeve (4).

7. A check valve core structure of a water meter according to claim 5, characterized in that the check valve plate (1) is further provided with an annular convex edge (1b) protruding upwards, the annular convex edge (1b) is arranged around the valve rod sleeve (2), and the sealing gasket (3) abuts against the annular convex edge (1 b).

8. The check valve core structure of the water meter according to the claim 5, characterized in that the pressing sleeve (4) is in a shape of a tapered cylinder with a small top and a big bottom, the bottom edge of the pressing sleeve (4) is provided with an annular flange (4a) which is formed by turning outwards, and the annular flange (4a) is abutted against the sealing gasket (3).

9. The check valve core structure of the water meter according to claim 5, characterized in that the positioning member is a positioning pin, the valve rod sleeve (2) is provided with a positioning hole, the positioning pin is inserted into the positioning hole, and the positioning pin is pressed against the upper end of the pressing sleeve (4).

10. A check valve core structure of a water meter according to claim 5, characterized in that the valve stem sleeve (2) is provided with an annular concave shoulder (2b), the inner wall of the pressing sleeve (4) is provided with a convex annular shoulder (4b), and the annular shoulder (4b) is embedded in the annular concave shoulder (2 b).

Technical Field

The invention belongs to the technical field of machinery, and relates to a check valve core structure of a water meter.

Background

Water meters, which are meters for measuring water flow, mostly measure the accumulated flow of water, and are generally classified into a positive displacement water meter and a velocity water meter. The internal structure of the traditional water meter can be divided into a shell, a sleeve and an inner core from outside to inside. The housing is cast pig iron and water passes through the lower annular space of the housing after exiting the water inlet, herein called the "lower annulus". An upper ring chamber is arranged above the annular space and is communicated with a water outlet. The bottom of the sleeve is provided with a filter screen with small holes to filter out sundries in water. The side surface of the sleeve is provided with an upper row of round holes and a lower row of round holes, the positions of the holes are just opposite to the upper ring chamber and the lower ring chamber of the shell, obviously, the lower row is provided with a water inlet hole, and the upper row is provided with a water outlet hole. The water entering tangentially from the lower discharge hole tends to form a rotating stream of water, which is important to the operation of the meter. The inner core is divided into an upper layer, a middle layer and a lower layer, the upper layer is seen from the glass window, and only the pointer and the dial are arranged. The most critical is the lower layer, here a plastic wheel with many plastic blades on the edge, called impeller. The impeller is positioned right in the rotating flow formed by the lower-layer hole of the sleeve, and the water flow impacts the blades on the periphery of the impeller to generate torque so that the impeller rotates. The larger the faucet is opened, the more rapid the water flow, and the faster the impeller rotates, so that the counting is realized by the counter, i.e. the water meter starts counting as long as water passes through the water meter. However, in fact, the water consumption of the user is only the water flowing from the outdoor through the water meter into the user, and the water should be counted. The water returned to the outdoor from the indoor should not be counted in the accumulated flow of the water, but the common water meter often has the condition that the water returns to the outdoor from the indoor due to the influence of external factors such as the terrain position, and the like, so that the counting of the water consumption is not accurate.

Therefore, in order to solve the problem of backflow, the existing check valve structure is mostly arranged in the water meter, the existing check valve structure comprises a valve body, a valve rod and a valve plate, the valve body is communicated with the water inlet or the water outlet of the water meter, the valve plate is fixed on the valve rod, a spring is further sleeved on the valve rod, under the action of the spring, the valve plate blocks the corresponding water inlet or the corresponding water outlet, the effect of preventing backflow in the check is achieved, and the existing check valve still has the following defects: the check valve sets up the end of intaking on the watchcase, is outside in order to prevent to hold the water that gets into the water gauge backward flow to the table from intaking, and can form the whirl to strike the impeller and realize the count in the water gauge by the rivers that the end of intaking got into, and rotatory rivers also can produce the impact to valve block and valve rod when assaulting the impeller to can lead to the valve block to intake the port border of end relatively and take place to rotate, thereby lead to sealed effect relatively poor, influence the non-return effect.

In order to improve the non-return effect, the conventional methods mainly comprise the following steps: 1. the elastic strength of the spring is increased, so that the elastic pressing force of the spring is improved, but the cost is higher 2, and a rotation preventing structure is arranged between the valve plate and the port of the water inlet end, so that the water meter water inlet end and the structure of the valve plate need to be specially improved, the water meter water inlet end and the structure of the valve plate cannot be suitable for a conventional common water meter, a mold needs to be reopened during the manufacture of a meter shell, and the cost is higher.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a check valve core structure of a water meter, which aims to solve the technical problems that: how to solve the poor problem of non return effect.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a check case structure of water gauge, includes the check valve piece, its characterized in that, convex valve rod cover has on the check valve piece, still the cover is equipped with the seal gasket that adopts elastic material to make on the valve rod cover, the seal gasket paste to lean on to be fixed on the check valve piece, a plurality of elasticity posts have on the seal gasket, a plurality of through-holes have been seted up to correspondence on the check valve piece, and a plurality of elasticity posts pass corresponding through-hole respectively.

The check valve core structure can be used at a water outlet of a water inlet end of a water meter, a valve rod sleeve extends into the water outlet, a guide post is further arranged in the water meter, the guide post extends into the valve rod sleeve, and the elastic post abuts against the water meter to block the water outlet through an elastic pressure check valve plate of the elastic post. This check case is through pasting to be fixed with seal gasket on the check piece, seal gasket can further strengthen the sealed effect of check valve piece, directly form the elasticity post on the seal gasket simultaneously, the corresponding through-hole of seting up on the check piece, the elasticity post can elastically support after passing corresponding through-hole and press on the water gauge, this anti conventional structure of the elasticity post of integrated into one piece has replaced conventional spring structure on the seal gasket promptly, the elasticity post not only can play conventional elasticity and support to press and realize sealed function, and because the elasticity post itself has taken place elastic deformation and has buckled at support pressure in-process lower extreme, thereby can produce the land fertility of grabbing of a circumferencial direction again on the water gauge, thereby can be fine prevent that whole check case from taking place the rotation under the impact of rivers, guarantee sealed effect and check effect. Meanwhile, the elastic column penetrates through the through hole, and the inner wall of the through hole has reverse pressure resistance to the elastic column, so that rotation can be prevented better, and a better sealing effect and a non-return effect are further guaranteed.

In the check valve core structure of the water meter, the elastic columns are obliquely arranged relative to the sealing gasket. The elastic column is inclined, and when the elastic column is installed, the inclination direction of the elastic column is opposite to the direction of the water vortex, and the elastic column is supported against the ground grabbing force which can be better generated in the circumferential direction on the water meter, so that the whole check valve core can be well prevented from rotating under the impact of water flow, and the sealing effect and the check effect are guaranteed.

In the check valve core structure of the water meter, the through holes are distributed around the circumference of the valve rod sleeve, and the elastic columns are obliquely arranged along the anticlockwise direction or the clockwise direction. A plurality of elasticity posts all incline along the same circumferencial direction to only need set the incline direction of elasticity post to opposite with the vortex direction of water after the installation, the land fertility of grabbing of a circumferencial direction of production that just can be fine, the impact force that the elimination vortex produced that can be fine, fine prevent that whole non return case from taking place to rotate under the impact of rivers, guarantee sealed effect and non return effect.

In the check valve core structure of the water meter, the through holes and the elastic columns are all three and are uniformly distributed around the circumference of the valve rod sleeve. The elastic column sets up to three and is the triangular distribution, and triangular structure steadiness is best to can be better, more stable eliminate the impact force that the vortex produced, fine prevent that whole non return case from taking place to rotate under the impact of rivers, guarantee sealed effect and non return effect.

In the check valve core structure of the water meter, the valve rod sleeve is further sleeved with a pressing sleeve, and the valve rod sleeve is further provided with a positioning piece which enables the pressing sleeve to tightly press the sealing gasket on the check valve plate. Through the arrangement, the sealing gasket is more convenient to mount, and meanwhile, the sealing gasket can be better integrated with the check valve plate, so that the sealing and check effects are guaranteed.

In the non-return valve core structure of the water meter, the positioning piece is a clamp spring, a clamping groove is formed in the valve rod sleeve, the clamp spring is sleeved on the valve rod sleeve and clamped in the clamping groove, and the clamp spring is abutted against the pressure sleeve. Due to the matched design of the clamp spring and the clamping groove, the sealing gasket is more convenient to disassemble and assemble, and convenient to install and replace, so that a better sealing non-return effect can be kept all the time.

In the check valve core structure of the water meter, the check valve piece is further provided with an annular convex edge protruding upwards, the annular convex edge is arranged around the valve rod sleeve, and the sealing gasket is abutted against the annular convex edge. The structural design on the protruding edge of annular for seal gasket is compressed tightly back on the check valve piece, and seal gasket can take place deformation, and the protruding edge of annular can imbed seal gasket, makes check valve piece and seal gasket have great relative frictional force, and whole of formation that can be better can not take place relative motion, thereby has guaranteed better sealed non return effect.

In the check valve core structure of the water meter, the pressing sleeve is in a conical cylinder shape with a small upper part and a large lower part, the bottom edge of the pressing sleeve is provided with an annular flanging which is formed by outwards turning, and the annular flanging is tightly abutted to the sealing gasket. Through foretell design for press the cover to have great face of supporting to seal gasket, laminating that can be better is on the check valve piece, thereby has guaranteed better sealed non return effect.

In the check valve core structure of the water meter, the positioning piece is a positioning pin, the valve rod sleeve is provided with a positioning hole, the positioning pin is inserted in the positioning hole, and the positioning pin is pressed against the upper end of the pressing sleeve. The design makes the dismounting of the sealing gasket more simple and convenient, and is convenient for installation and replacement, thereby always keeping better sealing non-return effect.

In the check valve core structure of the water meter, the valve rod sleeve is provided with an annular concave shoulder, the inner wall of the pressing sleeve is provided with a convex annular convex shoulder, and the annular convex shoulder is embedded into the annular concave shoulder. The annular convex shoulder and the annular concave shoulder are matched, so that the pressing sleeve can be positioned in the axial direction better, the moving is avoided, the sealing gasket can be well pressed on the check valve sheet, and a better sealing non-return effect is guaranteed.

Compared with the prior art, this water gauge's non return case structure has following advantage: unique seal gasket and elastic column's structural design for form one between check valve block and the water gauge with the vortex opposite direction grab the land fertility, the impact force that the elimination vortex that can be fine produced, fine prevent that whole check case from taking place to rotate under the impact of rivers, guarantee sealed effect and non return effect.

Drawings

Fig. 1 is a first perspective view of the check valve core structure of the water meter.

Fig. 2 is a second perspective view of the check valve core structure of the water meter.

Fig. 3 is an exploded view of the check valve cartridge structure of the present water meter.

Fig. 4 is a cross-sectional view of the check valve cartridge structure of the present water meter.

Fig. 5 is a perspective view of the check valve sheet.

In the figure, 1, a check valve plate; 1a, a through hole; 1b, an annular convex edge; 2. a valve stem sleeve; 2a, a clamping groove; 2b, an annular concave shoulder; 3. sealing gaskets; 3a, an elastic column; 4. pressing the sleeve; 4a, annular flanging; 4b, an annular shoulder; 5. and a clamp spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.