CN113531173A - Backflow-preventing water meter valve - Google Patents

Backflow-preventing water meter valve Download PDF

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Publication number
CN113531173A
CN113531173A CN202110761181.XA CN202110761181A CN113531173A CN 113531173 A CN113531173 A CN 113531173A CN 202110761181 A CN202110761181 A CN 202110761181A CN 113531173 A CN113531173 A CN 113531173A
Authority
CN
China
Prior art keywords
valve
sealing rod
torsion
water
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110761181.XA
Other languages
Chinese (zh)
Inventor
陈炯亮
周钻英
区家显
覃天恒
胡健生
区展剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG YONGQUAN VALVE TECHNOLOGY CO LTD
Original Assignee
GUANGDONG YONGQUAN VALVE TECHNOLOGY CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGDONG YONGQUAN VALVE TECHNOLOGY CO LTD filed Critical GUANGDONG YONGQUAN VALVE TECHNOLOGY CO LTD
Priority to CN202110761181.XA priority Critical patent/CN113531173A/en
Publication of CN113531173A publication Critical patent/CN113531173A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2014—Shaping of the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2021—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member with a plurality of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2028—Details of bearings for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2042—Special features or arrangements of the sealing
    • F16K1/2078—Sealing means for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

The invention discloses a backflow-preventing water meter valve which comprises a valve body, a valve cover, a sealing rod and a torsion spring, wherein the valve cover is detachably arranged on the valve body, the sealing rod is arranged inside the valve cover, a valve clack is movably connected onto the sealing rod, the valve clack rotates by taking the sealing rod as an axis, a guide rod is sleeved on the sealing rod, the torsion spring comprises a spring body, a first torsion arm and a second torsion arm, the first torsion arm and the second torsion arm extend out of the spring body, the spring body is sleeved on the guide rod, the first torsion arm is fixed on the valve cover, the second torsion arm is tightly attached to the surface, back to water flow, of the valve clack, and the torsion spring adds a pretightening force to the valve clack, so that the sealing is safer and more reliable. This valve is two non-return anti-backflow water gauge valves, can guarantee that the water gauge does not idle run, not reverse, and the circulation ability is strong, effectively prevents the refluence and pollutes, and is safe in utilization, when this valve goes wrong, only needs take the valve gap apart, change spare part can, need not dismantle whole valve body, be convenient for maintain and maintain.

Description

Backflow-preventing water meter valve
Technical Field
The invention relates to the technical field of check valves, in particular to a backflow prevention water meter valve.
Background
With the increasing degree of national technology and industrialization, products in the traditional general valve industry tend to the technical maturity stage, and in the valve industry with the technical maturity, technical innovation is mostly technical updating of a processing process and an assembling process.
At present, a backflow preventer structure for a common water meter on the market comprises a first connector and a second connector which are connected and communicated through threads, wherein a first valve clack and a second valve clack are arranged in the first connector, and when the valve is opened, the first valve clack and the second valve clack linearly move rightwards under the action of medium pressure and drive a sealing ring on the valve clack to leave a sealing surface, so that the medium is ensured to normally pass through; when the valve is closed, the first valve clack and the second valve clack move under the action of the spring and drive the sealing ring to cling to the sealing surface, so that a backflow medium cannot pass through. Although the structure can prevent the media in the household pipeline from flowing backwards to a greater extent, ensure the water supply safety, and replace the joint before the water meter or after the water meter under the condition of not moving the pipeline, the structure still has an imperfect part, firstly, the internal space structure of the valve body is compact, so that the water resistance is relatively large, and the flow is influenced; secondly, if the internal parts of the valve body are damaged, the valve body is troublesome to maintain or replace.
Based on the above, an urgent need exists in the market for equipment which has high circulation capacity, can ensure that the water meter does not idle or reverse, prevents backflow pollution and is convenient to maintain.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the backflow-preventing water meter valve which can ensure that the water meter does not idle or reverse, has strong circulation capacity, effectively prevents backflow pollution, and is safe to use and convenient to maintain.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a backflow prevention water meter valve comprising: a valve body; a valve cover detachably mounted on the valve body; the sealing rod is arranged inside the valve cover, a valve clack is movably connected onto the sealing rod, the valve clack rotates by taking the sealing rod as a shaft, and a guide rod is sleeved on the sealing rod; the torsion spring comprises a spring body, a first torsion arm and a second torsion arm, the first torsion arm and the second torsion arm extend out of the spring body, the spring body is sleeved on the guide rod, the first torsion arm is fixed on the valve cover, and the second torsion arm is tightly attached to one surface, back to the water flow, of the valve clack.
Furthermore, a threaded hole is formed in the valve body, and the valve cover is detachably mounted on the valve body through a screw.
Furthermore, two limiting parts are arranged on the valve clack, the sealing rod penetrates through the limiting parts and is movably connected with the valve clack, and the guide rod and the spring body are limited between the two limiting parts.
Furthermore, the valve clack one side bottom of rivers dorsad is equipped with the buffer block, the top of valve body be equipped with the spacing district of buffer block contact.
Further, including water inlet valve group and outlet valve group, water inlet valve group includes sealing rod, valve clack, guide arm and torsion spring, outlet valve group also includes sealing rod, valve clack, guide arm and torsion spring, water inlet valve group with sealing rod on the outlet valve group all fixes on the valve cover.
Furthermore, the water inlet valve group and the water outlet valve group divide the valve body into a water inlet cavity, a buffer cavity and a water outlet cavity, and the height of the water inlet of the buffer cavity and the height of the water inlet of the water outlet cavity are both larger than the height of the water inlet cavity.
Furthermore, a rubber gasket is arranged at the contact position of the valve cover and the valve body.
Furthermore, one end of the sealing rod is fixed on the valve cover, and a sealing ring is arranged at the contact position of the sealing rod and the valve cover.
Furthermore, the water meter is arranged at the water inlet end or the water outlet end of the valve body.
Further, the valve body, the valve cover, the torsion spring, the sealing rod and the guide rod are all made of 304 stainless steel.
The invention has the beneficial effects that:
the valve comprises a valve body, a valve cover, a sealing rod and a torsion spring, wherein the valve cover is detachably arranged on the valve body, the sealing rod is arranged inside the valve cover, a valve clack is movably connected onto the sealing rod, the valve clack rotates by taking the sealing rod as an axis, a guide rod is sleeved on the sealing rod, the torsion spring comprises a spring body, a first torsion arm and a second torsion arm, the first torsion arm and the second torsion arm extend out of the spring body, the spring body is sleeved on the guide rod, the first torsion arm is fixed on the valve cover, the second torsion arm is tightly attached to the surface, back to water flow, of the valve clack, and the torsion spring adds a pretightening force to the valve clack, so that the sealing is safer and more reliable. The valve can ensure that the water meter does not idle or rotate reversely, has strong circulation capacity, effectively prevents backflow pollution, is safe to use, and when the valve goes wrong, only the valve cover needs to be disassembled, and the whole valve body does not need to be disassembled, so that the valve is convenient to repair and maintain.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 4 is a partial block diagram of FIG. 3;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic view of the torsion spring according to the present invention;
FIG. 7 is a schematic structural view of a water inlet valve set or a water outlet valve set according to the present invention;
FIG. 8 is a schematic view of the construction of the valve flap of the present invention;
figure 9 is one of the mounting positions of the water meter of the present invention;
figure 10 shows a second mounting position of the water meter according to the invention;
FIG. 11 is a graph of the degree of compression of a torsion spring in accordance with the present invention as a function of applied force.
In the figure:
1. a valve body; 2. a valve cover; 3. a sealing rod; 4. a torsion spring; 401. a spring body; 402. a first torsion arm; 403. a second torsion arm; 5. a valve flap; 501. a limiting member; 502. a buffer block; 6. a guide bar; 7. a water meter; 8. a screw; 9. a water inlet valve bank; 10. a water outlet valve bank; 11. a water inlet cavity; 12. a buffer chamber; 13. a water outlet cavity; 14. a limiting region; 15. a rubber gasket; 16. and (5) sealing rings.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described below with reference to the accompanying drawings and embodiments. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1-6, this embodiment provides a backflow prevention water meter valve, including valve body 1, valve gap 2 and check valve group, valve gap 2 detachably installs on valve body 1, and check valve group includes sealing rod 3, torsion spring 4, valve clack 5 and guide arm 6, and sealing rod 3 sets up in valve gap 2's inside, and swing joint has valve clack 5 on the sealing rod 3, and valve clack 5 uses sealing rod 3 to rotate as the axle, and the cover has guide arm 6 on the sealing rod 3. The torsion spring 4 comprises a spring body 401, a first torsion arm 402 and a second torsion arm 403, wherein the first torsion arm 402 and the second torsion arm 403 extend out of the spring body 401, the spring body 401 is sleeved on the guide rod 6, the torsion spring 4 is prevented from shaking back and forth during movement, the torsion spring 4 has the function of maintaining stable operation of the torsion spring 4, the first torsion arm 402 is fixed on the valve cover 2, and the second torsion arm 403 is tightly attached to one surface, back to the water flow, of the valve clack 5.
Be equipped with the screw hole on the valve body 1 of this embodiment, valve gap 2 is installed on valve body 1 through 8 detachably of a plurality of screw, when this embodiment goes wrong, only needs to take apart valve gap 2, and the inspection maintenance, change spare part can, need not dismantle whole valve body 1, be convenient for repair and maintenance.
As shown in fig. 7-8, it is further provided that two stoppers 501 are disposed on the valve flap 5, the sealing rod 3 passes through the two stoppers 501 and is movably connected to the valve flap 5, the guide rod 6 is fixed between the two stoppers 501, and the spring body 401 is sleeved on the guide rod 6, so that the guide rod 6 and the spring body 401 are restricted between the two stoppers 501 and do not move back and forth, the torsion spring 4 is one of coil springs and can store and release angular energy, the torsion arm of the torsion spring 4 is fixed to another component, and when the other component rotates around the spring body 401, the torsion spring 4 generates a torque or a rotational force to pull the other component back to an original position.
Based on the foregoing, under the normal circumstances of leading to water, water passes through pipeline entering valve body 1, and valve clack 5 is opened under the effect of water pressure, and the pipeline is normal to lead to water, except valve body 1, other parts of this embodiment all set up in valve gap 2 to do not occupy valve body 1's space, therefore 1 inner space of valve body is big, thereby make the flow resistance in the valve body 1 little, the flow is big. When the pipeline is closed and water is supplied, the second torsion arm 403 is tightly attached to the valve clack 5, and the torsion spring 4 increases the pretightening force, so that the valve clack 5 is tightly closed under the action of the water pressure and the torsion spring 4 to play a role of backflow prevention.
In this example, the torsion spring 4 had a winding ratio of 8.75, a coefficient of curvature of 1.09, a coefficient of stiffness of 4.64, a tensile strength of 1550MPa, and an elastic modulus of 185000 MPa. The spring compression and the force of the torsion spring 4 are positively correlated, and in the case of normal water supply, the larger the water pressure, the smaller the angle of the torsion spring 4, that is, the smaller the angle between the first torsion arm 402 and the second torsion arm 403, and the larger the force of the torsion spring 4, as shown in fig. 11.
Referring to fig. 3, as a preferred scheme, this embodiment is a double check valve structure, the check valve group includes valve group 9 and the valve group 10 of going out of intaking, valve group 9 of intaking includes sealing rod 3, the valve clack 5, guide arm 6 and torsion spring 4, valve group 10 of going out also includes sealing rod 3, the valve clack 5, guide arm 6 and torsion spring 4, valve group 9 and the valve group 10 of going out of intaking's structure is the same, sealing rod 3 on valve group 9 and the valve group 10 of going out of intaking all fixes on valve gap 2, sealing rod 3, guide arm 6 and spring body 401 all set up inside valve gap 2, do not occupy the inner space of valve body 1, the water flow space of valve body 1 improves, obviously increase, reduce the flow resistance. In addition, under the dual function of bivalve lamella 5, can play better anti-backflow effect.
The water inlet valve group 9 and the water outlet valve group 10 divide the valve body 1 into a water inlet cavity 11, a buffer cavity 12 and a water outlet cavity 13, wherein the height of the water inlet of the buffer cavity 12 and the height of the water inlet of the water outlet cavity 13 are both larger than the height of the water inlet cavity 11, and water backflow is avoided. The top and the bottom of valve body 1 are equipped with a plurality of spacing districts 14, and when valve clack 5 recovered to the closed condition, the upper end of the one side of valve clack 5 forward rivers just supported the spacing district 14 on valve body 1 top, and simultaneously, the valve clack 5 lower extreme just supported the spacing district 14 in valve body 1 bottom, and when valve clack 5 was closed, the plate body slope, need to explain that, the valve clack 5 of this embodiment is the plane board.
Specifically, the one side bottom that valve clack 5 dorsad rivers is equipped with buffer block 502, and when normally leading to water, the spacing district 14 and the buffer block 502 contact on valve body 1 top avoid valve clack 5 directly to touch valve body 1, and preferably, valve gap 2 and the contact department of valve body 1 are equipped with packing ring 15, and the contact department of sealing rod 3 and valve gap 2 is equipped with sealing washer 16. Only one end of the sealing rod 3 is fixed on the valve cover 2, and the other end of the sealing rod is suspended in the valve cover 2, so that the valve clack 5 and the torsion spring 4 can be conveniently replaced during maintenance or repair. Since the sealing rod 3 needs to be fixed to the bonnet 2 and the structure of the sealing rod 3 needs to be as precise as that of the bonnet 2, the diameter of the sealing rod 3 is small and the torsion spring 4 is not easily fitted directly over the sealing rod 3, so that it is necessary to use the guide rod 6 as a support to stabilize the torsion spring 4.
Referring to fig. 9-10, this embodiment further includes a water meter 7, and the water meter 7 is disposed at the water inlet end or the water outlet end of the valve body 1, that is, the check valve can be used at the inlet or the outlet of the water meter 7 according to actual requirements, to replace part of the joint at the inlet or the outlet, to effectively prevent the water meter 7 from idling, reversing, etc., and is suitable for a pipe where the pressure water can only flow in one direction.
In the embodiment, the valve body 1, the valve cover 2, the torsion spring 4, the sealing rod 3 and the guide rod 6 are all made of 304 stainless steel, so that the valve is environment-friendly, sanitary, wear-resistant, corrosion-resistant, low-temperature-resistant, excellent in thermal expansion performance and excellent in thermal insulation performance. The valve clack 5 is a rubber-coated valve clack 5, is made of EPDM (ethylene-propylene-diene monomer), nylon and 45 steel materials, and has the advantages of ozone aging resistance, weather aging resistance, heat resistance and the like. Similarly, the rubber gasket 15 is made of EPDM.
The assembly process of this embodiment:
s1: the torsion spring 4 is sleeved on the guide rod 6, the sealing rod 3 penetrates through the valve clack 5, the guide rod 6 and the spring, and the guide rod 6, the torsion spring 4 and the valve clack 5 are fixed on the valve cover 2 together.
S2: the first torsion arm 402 is fixed on the valve cover 2, and the second torsion arm 403 is tightly attached to the surface of the valve clack 5, which faces away from the water flow, so that the installation is convenient, the deviation of the torsion spring 4 is prevented, and the torsion spring 4 is prevented from not playing the role of increasing the pre-tightening force.
S3: and (3) sleeving the mounted valve cover 2 with a rubber gasket 15, fastening the valve cover 2 and the valve body 1 by using an inner hexagonal socket head cap screw 8 corresponding to a threaded hole on the valve body 1, and fixing the valve cover 2 and the valve body 1.
The disassembly process of this embodiment is the reverse of the assembly process described above, wherein the valve cap 2 is opened, the check valve assembly is disassembled from the valve cap 2, and then the other components are disassembled and replaced. When this embodiment goes wrong, need not dismantle whole valve body 1, only need take apart valve gap 2, the inspection maintenance, change spare part can, easy operation, the practicality is strong.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should fall within the protection scope of the present invention.

Claims (10)

1. A backflow prevention water meter valve is characterized by comprising:
a valve body;
a valve cover detachably mounted on the valve body;
the sealing rod is arranged inside the valve cover, a valve clack is movably connected onto the sealing rod, the valve clack rotates by taking the sealing rod as a shaft, and a guide rod is sleeved on the sealing rod;
the torsion spring comprises a spring body, a first torsion arm and a second torsion arm, the first torsion arm and the second torsion arm extend out of the spring body, the spring body is sleeved on the guide rod, the first torsion arm is fixed on the valve cover, and the second torsion arm is tightly attached to one surface, back to the water flow, of the valve clack.
2. A backflow prevention water meter valve in accordance with claim 1, wherein said valve body is provided with a threaded hole, and said valve cover is detachably mounted on said valve body by means of a screw.
3. The anti-backflow water meter valve according to claim 1, wherein the valve flap is provided with two limiting members, the sealing rod passes through the limiting members and is movably connected with the valve flap, and the guide rod and the spring body are limited between the two limiting members.
4. The anti-backflow water meter valve recited in claim 1, wherein a bottom end of a side of the valve flap facing away from the water flow is provided with a buffer block, and a top end of the valve body is provided with a limiting area contacting the buffer block.
5. The anti-backflow water meter valve according to claim 1, comprising a water inlet valve set and a water outlet valve set, wherein the water inlet valve set comprises a sealing rod, a valve clack, a guide rod and a torsion spring, the water outlet valve set also comprises a sealing rod, a valve clack, a guide rod and a torsion spring, and the sealing rods on the water inlet valve set and the water outlet valve set are fixed on the valve cover.
6. The valve of claim 5, wherein the valve body is divided into an inlet chamber, a buffer chamber and an outlet chamber by the inlet valve set and the outlet valve set, and the height of the inlet of the buffer chamber and the height of the inlet of the outlet chamber are both greater than the height of the inlet chamber.
7. The valve of claim 1, wherein a rubber gasket is disposed at a contact portion of the valve cover and the valve body.
8. The valve of claim 1, wherein one end of the sealing rod is fixed to the valve cover, and a sealing ring is disposed at a contact position of the sealing rod and the valve cover.
9. The anti-backflow water meter valve according to claim 1, further comprising a water meter disposed at a water inlet end or a water outlet end of the valve body.
10. The valve of claim 1, wherein the valve body, the valve cap, the torsion spring, the sealing rod and the guide rod are all made of 304 stainless steel.
CN202110761181.XA 2021-07-06 2021-07-06 Backflow-preventing water meter valve Pending CN113531173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110761181.XA CN113531173A (en) 2021-07-06 2021-07-06 Backflow-preventing water meter valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110761181.XA CN113531173A (en) 2021-07-06 2021-07-06 Backflow-preventing water meter valve

Publications (1)

Publication Number Publication Date
CN113531173A true CN113531173A (en) 2021-10-22

Family

ID=78097787

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110761181.XA Pending CN113531173A (en) 2021-07-06 2021-07-06 Backflow-preventing water meter valve

Country Status (1)

Country Link
CN (1) CN113531173A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117570372A (en) * 2023-10-25 2024-02-20 哈尔滨凯纳智能装备有限公司 Data control device for remote water meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117570372A (en) * 2023-10-25 2024-02-20 哈尔滨凯纳智能装备有限公司 Data control device for remote water meter

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