Water meter shell with check valve

Abstract

The water meter shell comprises a meter shell body and a check valve assembly, a water inlet is formed in one end of the meter shell body, a water outlet pipe is arranged at the other end of the meter shell body, a water outlet is formed in the water outlet pipe, the meter shell body further comprises a cavity, and the two ends of the cavity are communicated with the water inlet and the water outlet respectively. A mounting opening is formed in the side, close to the water outlet, of the water outlet pipe, the check valve assembly is arranged in the mounting opening, a matching seat is arranged in the water outlet pipe, a communicating hole communicating the cavity with the water outlet is formed in the matching seat, the check valve assembly is in sealing fit with the communicating hole, and a waterproof sealing structure for sealing the mounting opening and the communicating hole is further arranged between the check valve assembly and the water outlet pipe. The water meter has the advantages that a novel mechanical structure is utilized, the check valve arranged at the water outlet of the water meter shell is adopted, the effects of preventing reverse flow and improving the metering precision of the water meter are achieved, and the first sealing ring arranged at the mounting opening and the second sealing ring arranged on the matching seat are adopted; the effect of improving the sealing performance between the check valve assembly and the water meter shell is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water gauge technical field especially relates to a water gauge shell with check valve. BACKGROUND

[0002] Water gauge is a kind of common instrument for measuring water flow, in actual use process, water flow backflow can appear, and then lead to water gauge reverse, influence measurement accuracy, usually by adding check valve in water pipe to prevent water gauge backflow.

[0003] The existing patent with the announcement number CN216593616U discloses water gauge shell in fluid technical field, including water gauge cavity and the water inlet pipe and the water outlet pipe communicated with water gauge cavity both sides, the water outlet pipe is equipped with check structure, the check structure includes check cavity, the check cavity is equipped with sealing ball, the check cavity is connected with the cover of blocking sealing ball and leaving check cavity, the water outlet pipe is equipped with water outlet flow channel, the water outlet flow channel includes the first flow channel communicated with check cavity and the second flow channel with one end communicated with check cavity and the other end communicated with water gauge cavity, the sealing ball blocks the communication port between the second flow channel and check cavity.

[0004] But the water gauge shell has the following shortcomings: check structure lacks positioning structure, it is difficult to realize the quick positioning of check structure when backflow, and check structure is only sealed by sealing ball blocking first communication port, and the sealing performance is limited, which affects the measurement accuracy of water gauge. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of water gauge shell with check valve, with check valve assembly positioning installation, check valve assembly strong sealing, the effect of high water gauge measurement accuracy.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a kind of water gauge shell with check valve, including shell main part and check valve assembly, the shell main part one end is equipped with water inlet, the shell main part other end is equipped with water outlet pipe, the water outlet pipe is equipped with water outlet, the shell main part still includes cavity, the cavity two ends are communicated water inlet and water outlet respectively, it is characterized in that: the water outlet pipe is equipped with installation port in the side portion close to the water outlet, the check valve assembly is located in the installation port, the water outlet pipe is equipped with cooperation seat inside, the cooperation seat is equipped with the communication hole communicated with the cavity and water outlet, the check valve assembly is sealed with the communication hole, and the check valve assembly and the water outlet pipe are also equipped with waterproof sealing structure sealing installation port and communication hole.

[0007] By adopting the technical scheme, the check valve is installed at the water outlet pipe, water flows to the water outlet through the check valve, and the check valve prevents water from flowing backward, improves the water meter measurement accuracy, and the check valve assembly and the water outlet pipe are sealed through the waterproof sealing structure, preventing water from leaking between the check valve assembly and the water outlet pipe during normal use of the water meter, and improving the sealing performance of the check valve assembly.

[0008] The utility model discloses further provide that: the check valve assembly includes valve cap, valve core, valve clack and first spring, the valve core with the valve clack fixed connection, the valve cap is passed and is equipped with the guide hole, the valve core with the guide hole direction slip fit, first spring is located between the valve cap with the valve clack, and first spring is around the valve core outer periphery.

[0009] By adopting the technical scheme, when water inflows, the valve clack is pushed open by water flow, the valve core is inserted into the guide hole on the valve cap, and water flows to the water outlet, and when water stops inflowing, the valve clack is pushed against the matching seat under the elastic force of the first spring, and water flow is prevented from flowing backward into the cavity, realizing the check function of the water meter housing.

[0010] The utility model discloses further provide that: the check valve assembly still includes second spring, and the second spring is elastically abutted between the valve core and the valve cap.

[0011] By adopting the technical scheme, the second spring is similar to the first spring, when water flows out, the valve clack is pushed open, drives the valve core to be inserted into the plug-in slot, and compresses the second spring, when water stops inflowing, the second spring exerts elastic force, forces the valve clack and the valve core to reset, further improves the reset speed of the valve clack, and when the first spring is damaged, the valve clack can still reset to realize sealing, improving the reliability of the check valve assembly.

[0012] The utility model discloses further provide that: the check valve assembly still includes spring adjusting part, the valve cap is equipped with threaded hole, the spring adjusting part is correspondingly equipped with thread, the spring adjusting part and the threaded hole lock together, and the side of spring adjusting part close to valve clack is opposite to the second spring.

[0013] By adopting the technical scheme, when the check valve assembly is installed, the tightness of the spring is adjusted by rotating the spring adjusting part, so as to adjust the pressure required for the water flow to push open the valve clack under different water pressures, and when the second spring is used for a long time, the performance of the second spring deteriorates, the spring adjusting part is adjusted to compress the second spring, so that the second spring has elastic force, and the normal work of the second spring is guaranteed.

[0014] The utility model discloses further provide that: the spring adjusting part and the valve cap are equipped with deformable sealing washer.

[0015] By adopting the technical scheme, when the adjusting spring adjusting part is adjusted, the distance between the spring adjusting part and the bonnet is shortened, the sealing gasket is extruded, and the sealing between the spring adjusting part and the bonnet is maintained through the deformable sealing gasket.

[0016] The utility model discloses further provide that: the waterproof sealing structure still include second sealing ring, the waterproof sealing structure still include second sealing ring, the second sealing ring is located between the check valve assembly with cooperation seat, when the valve flap abuts on cooperation seat, the check valve assembly passes through second sealing ring with cooperation seat sealed cooperation.

[0017] By adopting the technical scheme, the first sealing ring prevents water flow from the opening end of the mounting port, improves the sealing performance of the check valve assembly, and avoids water leakage between the bonnet and the mounting port during use of the water meter.

[0018] The utility model discloses further provide that: the waterproof sealing structure still include second sealing ring, the waterproof sealing structure still include second sealing ring, the second sealing ring is located between the check valve assembly with cooperation seat, when the valve flap abuts on cooperation seat, the check valve assembly passes through second sealing ring with cooperation seat sealed cooperation.

[0019] By adopting the technical scheme, the second sealing ring realizes the sealing between the check valve assembly and the cooperation seat, prevents water flow from leaking out of the communication hole on the cooperation seat, and further improves the sealing performance of the check valve assembly.

[0020] The utility model discloses further provide that: the check valve assembly is close to the cooperation seat one side ring and is set up with the positioning recess, the cooperation seat is equipped with first positioning convex part, first positioning convex part with the positioning recess positioning cooperation, and second sealing ring is located in the positioning recess.

[0021] By adopting the technical scheme, the first positioning convex part is positioned and inserted into the positioning recess when the valve flap resets, the accuracy of the valve flap reset is improved, the second waterproof sealing ring is not easy to fall off by setting the second waterproof sealing ring between the recess and the positioning convex part, the sealing between the valve flap and the cooperation seat is improved, and backflow is prevented.

[0022] The utility model discloses further provide that: the check valve assembly is equipped with second positioning convex part, and the second positioning convex part is positioned with the communication hole.

[0023] By adopting the technical scheme, the second positioning convex part is inserted into the communication hole when the check valve assembly resets, the check valve assembly is quickly positioned when backflow occurs, and the communication hole has a certain plugging function, and the waterproof sealing performance of the communication hole is further improved.

[0024] The further setting of the utility model is: the cavity includes a first chamber and a second chamber, and a supporting convex part for installing the metering equipment is arranged at the joint of the first chamber and the second chamber.

[0025] By adopting the technical scheme, when the metering equipment is installed on the water meter, the metering equipment is installed in the cavity, and the metering equipment can be placed on the supporting convex part, thereby facilitating the installation of the water meter metering equipment.

[0026] In conclusion, the utility model has the following beneficial effects:

[0027] 1. The check valve arranged at the water outlet of the water meter shell has the effects of preventing backflow and improving the metering accuracy of the water meter.

[0028] 2. The check valve assembly provided with the first spring and the second spring has the effect of quick resetting of the check valve assembly.

[0029] 3. The first sealing ring arranged at the installation port and the second sealing ring arranged at the matching seat have the effect of improving the sealing property between the check valve assembly and the water meter shell. DRAWINGS

[0030] Figure 1 It is the overall schematic view of the utility model.

[0031] Figure 2 It is the top view of the utility model.

[0032] Figure 3 It is Figure 2 the sectional view of A-A section.

[0033] Figure 4 It is Figure 3 the local enlarged view of B.

[0034] Figure 5 It is Figure 4 the local enlarged view of C.

[0035] Figure 6 It is the valve clack structure schematic view of the utility model.

[0036] In the drawing: 1, shell main body; 11, water inlet; 12, water outlet; 2, check valve assembly; 21, valve cap; 211, guide hole; 212, spring adjusting part; 213, threaded hole; 214, sealing washer; 22, valve core; 23, valve clack; 231, positioning groove; 232, second positioning convex part; 24, first spring; 25, second spring; 3, cavity; 31, first chamber; 32, second chamber; 33, supporting convex part; 4, water outlet pipe; 41, matching seat; 411, first positioning convex part; 412, communication hole; 5, installation port; 6, waterproof sealing structure; 61, first sealing ring; 62, second sealing ring. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] A water meter housing with a check valve, such as Figures 1-4 As shown, the device includes a meter housing and a check valve assembly. One end of the meter housing has an inlet, and the other end has an outlet. The meter housing also has a cavity for housing the water metering device. The inlet and outlet are connected to the two ends of the cavity, respectively. An outlet pipe is located on the side of the meter housing near the outlet, and an installation port is provided on the outlet pipe. The check valve assembly is installed inside the installation port of the outlet pipe. A mating seat is located inside the outlet pipe, and the mating seat has a connecting hole that connects the cavity and the outlet. The check valve assembly is sealed to the connecting hole. A waterproof sealing structure is provided between the check valve assembly and the outlet pipe to seal the connecting hole.

[0039] like Figure 3 , 4 As shown, the mating seat inside the outlet pipe is inclined, making it easier for the check valve assembly to be opened when the water flows from the inlet to the outlet. The installation port on the outlet pipe is threaded, allowing the check valve assembly to be rotated into the installation port, realizing the positioning and installation of the check valve assembly. At the same time, it improves the efficiency of installation and disassembly of the check valve assembly, and facilitates replacement and maintenance after equipment damage.

[0040] like Figure 4 As shown, the check valve assembly includes a valve cap, a valve core, a valve disc, a first spring, and a second spring. The valve cap has a guide hole near the valve core. The valve core slides and is guided by the guide hole. The valve core and the valve disc are fixedly connected, and the valve core slides axially along the guide hole. When the water flows from the inlet to the outlet, under the action of water pressure, the water pushes open the valve disc, causing the valve core to insert into the guide hole on the valve cap. At this time, the valve disc is separated from the connecting hole on the mating seat, and the water flows from the connecting hole to the outlet, realizing the water flow from the inlet to the outlet in a positive direction.

[0041] Further, the valve core is provided with a first spring, one end of the valve core is connected with a second spring, the other end of the valve core is connected with the valve cap, one end of the first spring is connected with the valve disc, the other end of the first spring is connected with the valve cap, when the valve disc is opened by the water flow, the first spring is compressed, when the water flow stops, the pressure of the water flow on the valve disc is reduced, the valve disc is reset to the communication hole under the elastic force of the first spring, the valve disc is abutted on the matching seat, the water flow is prevented from flowing into the cavity from the water outlet, thereby causing the water meter to be inaccurate, in addition, one end of the second spring is connected with the valve core, the other end of the second spring is connected in the plug groove of the valve cap, when the valve disc is opened, the valve core is axially displaced inward along the guide hole, the second spring is compressed, the second spring has the same function as the first spring, can assist the check valve assembly to reset quickly when the water flow stops, prevent backflow, at the same time, by setting two springs, the damage of one of the first spring or the second spring is prevented, the check valve assembly cannot work normally, the normal operation of the equipment is ensured.

[0042] In addition, the valve cap is provided with a spring adjusting piece, the valve cap is provided with a threaded hole, the spring adjusting piece is provided with a thread on the outer periphery, a deformable sealing washer is arranged between the spring adjusting piece and the valve cap, the distance between the spring adjusting piece and the valve cap is shortened by rotating the spring adjusting piece, the sealing washer is extruded, and the sealing between the spring adjusting piece and the valve cap is maintained by the deformable sealing washer.

[0043] The check valve assembly and the water outlet pipe are provided with a waterproof sealing structure, the waterproof sealing structure comprises a first sealing ring and a second sealing ring, the first sealing ring is arranged between the check valve assembly and the mounting port, the water flow is prevented from flowing out of the mounting port, the sealing performance of the check valve assembly is improved, and the water meter is prevented from leaking during use, the second sealing ring is arranged between the check valve assembly and the matching seat, the water flow is prevented from leaking out of the communication hole arranged on the matching seat, and the sealing performance of the check valve assembly is further improved.

[0044] As shown in the figure, Figures 4-6 The check valve assembly is provided with a positioning groove on the side close to the matching seat, the matching seat is correspondingly provided with a first positioning convex part, the first positioning convex part is positioned and matched with the positioning groove when the check valve assembly is closed, the first positioning convex part is positioned and inserted into the positioning groove when the valve disc is reset, the accuracy of the valve disc reset is improved, in this embodiment, the first positioning convex part is trapezoidal in cross section, the side close to the positioning groove is the upper base, the groove is more easily aligned with the first positioning convex part when the valve disc is reset, or a round corner can be arranged to facilitate the positioning and matching of the first positioning convex part and the positioning groove, in addition, the second sealing ring is arranged in the positioning convex part, the first positioning convex part and the positioning groove are sealed by the second sealing ring after the valve disc is reset, and the waterproof sealing performance of the check valve assembly is improved.

[0045] Further, the check valve assembly is further provided with a second positioning protrusion, in the embodiment, the second positioning protrusion is arranged on the lower surface of the valve disc, the second positioning protrusion is correspondingly arranged with the communication hole, the communication hole is arranged in the form of a stepped hole, when the valve disc is sealingly matched with the mounting hole, the second positioning protrusion is inserted and positioned with the step of the stepped hole and sealingly matched, and the second positioning protrusion is provided with a round corner, so as to facilitate the reset of the valve disc, meanwhile, the second positioning protrusion has a certain plugging function, and the waterproof sealing performance of the communication hole is further improved.

[0046] As shown in the drawings, Figure 3 In the embodiment, the cavity is divided into a first cavity communicated with the water outlet and a second cavity communicated with the water inlet, a supporting protrusion for supporting the water meter measuring device is arranged at the junction of the first cavity and the second cavity, and the water meter measuring device is conveniently installed.

[0047] The basic working principle of the utility model is as follows: a water outlet pipe is arranged on one side of the shell main body close to the water outlet, a check valve assembly is arranged in the mounting hole of the water outlet pipe, when water flows from the water inlet to the water outlet, the water flow pushes open the valve disc of the check valve assembly under the action of pressure, the forward flow of the water flow is realized, when the water inlet is stopped, the check valve assembly is quickly reset under the action of the first spring and the second spring, a waterproof sealing structure is arranged between the check valve assembly and the mounting hole and the cooperation seat of the water outlet pipe, the sealing performance of the check valve assembly is improved, and the water flow is prevented from flowing from the water outlet to the water inlet.

[0048] The above is only the preferred embodiment of the utility model, therefore, equivalent changes or modifications made according to the structure, features and principles of the utility model patent application range are included in the utility model patent application range.

Claims

1. A water meter housing with check valve, comprising a housing body (1) and a check valve assembly (2), one end of the housing body (1) is provided with a water inlet (11), the other end of the housing body (1) is provided with a water outlet pipe (4), the water outlet pipe (4) is provided with a water outlet (12), the housing body (1) further comprises a cavity (3), the cavity (3) is communicated with the water inlet (11) and the water outlet (12) respectively, characterized in that: The water outlet pipe (4) is provided with a mounting port (5) near the side of the water outlet (12), the check valve assembly (2) is arranged in the mounting port (5), the water outlet pipe (4) is internally provided with a matching seat (41), the matching seat (41) is provided with a communication hole (412) communicating the cavity (3) and the water outlet (12), the check valve assembly (2) is sealingly matched with the communication hole (412), and the check valve assembly (2) and the water outlet pipe (4) are further provided with a waterproof sealing structure (6) sealing the mounting port (5) and the communication hole (412).

2. A water meter case with check valve according to claim 1, characterized in that: The check valve assembly (2) comprises a valve cap (21), a valve core (22), a valve flap (23) and a first spring (24), the valve core (22) is fixedly connected with the valve flap (23), the valve cap (21) is provided with a guide hole (211), the valve core (22) is slidingly matched with the guide hole (211), and the first spring (24) is arranged between the valve cap (21) and the valve flap (23) and surrounds the outer periphery of the valve core (22).

3. A water meter case with check valve according to claim 2, characterized in that: The check valve assembly (2) further comprises a second spring (25), and the second spring (25) elastically abuts between the valve core (22) and the valve cap (21).

4. A water meter case with check valve according to claim 3, characterized in that: The check valve assembly (2) further comprises a spring adjusting piece (212), the valve cap (21) is provided with a threaded hole (213), the spring adjusting piece (212) is correspondingly provided with threads, the spring adjusting piece (212) is locked and matched with the threaded hole (213), and one side of the spring adjusting piece (212) close to the valve flap (23) abuts against the second spring (25).

5. A water meter case with check valve according to claim 4, characterized in that: A seal gasket (214) capable of elastically deforming is arranged between the spring adjusting piece (212) and the valve cap (21).

6. A water meter case with check valve according to claim 2, characterized in that: The waterproof sealing structure (6) comprises a first sealing ring (61), and the first sealing ring (61) is arranged at the opening end of the mounting port (5); when the valve cap (21) is fixedly arranged on the mounting port (5), the check valve assembly (2) is sealingly matched with the mounting port (5) through the first sealing ring (61).

7. A water meter case with check valve according to claim 2, characterized in that: The waterproof sealing structure (6) further comprises a second sealing ring (62), and the second sealing ring (62) is arranged between the check valve assembly (2) and the matching seat (41); when the valve flap (23) abuts against the matching seat (41), the check valve assembly (2) is sealingly matched with the matching seat (41) through the second sealing ring (62).

8. A water meter case with check valve according to claim 7, characterized in that: The check valve assembly (2) is provided with a positioning groove (231) around one side close to the matching seat (41), the matching seat (41) is provided with a first positioning protrusion (411), the first positioning protrusion (411) is positioned and matched with the positioning groove (231), and the second sealing ring (62) is arranged in the positioning groove (231).

9. A water meter case with check valve according to claim 2, characterized in that: The check valve assembly (2) is provided with a second positioning protrusion (232), which is inserted and positioned with the communication hole (412) and sealedly cooperates when the valve disc (23) is sealedly cooperated with the communication hole (412).

10. A water meter case with check valve according to claim 1, characterized in that: The cavity (3) comprises a first chamber (31) and a second chamber (32), and a supporting protrusion (33) for installing a metering device is arranged at the junction of the first chamber (31) and the second chamber (32).

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