CN216951821U

CN216951821U - Quick-closing check valve

Info

Publication number: CN216951821U
Application number: CN202220746004.4U
Authority: CN
Inventors: 方丹华
Original assignee: Zhejiang Huifeng Valve Co ltd
Current assignee: Zhejiang Huifeng Valve Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-12
Anticipated expiration: 2032-03-31

Abstract

The utility model provides a quick-closing check valve, and belongs to the technical field of check valves. The problem of refluence can appear after the non return structure that it had solved damages. The quick-closing check valve comprises a valve body with a water inlet and a water outlet and a valve core unit arranged in the valve body, wherein the valve body consists of a first assembly shell with a first valve cavity and a second assembly shell with a second valve cavity, the first assembly shell and the second assembly shell are communicated with each other through a connecting part, the water inlet and the water outlet are respectively arranged on the first assembly shell and the second assembly shell, the first assembly shell is positioned in the first valve cavity and is provided with a non-return unit which is connected with the first assembly shell and is used for forming a non-return loop, and the second assembly shell is positioned in the second valve cavity and is provided with a closed unit which is connected with the first assembly shell and can close the water outlet. The utility model has the advantage of preventing backflow after the non-return structure is damaged.

Description

Quick-closing check valve

Technical Field

The utility model belongs to the technical field of check valves, and relates to a quick-closing check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block medium backflow, and in the actual use process, the check valve can be damaged due to other factors, so that the check function cannot be realized, and if the loop of the check valve is not closed, other equipment can be damaged, and therefore large loss occurs.

Disclosure of Invention

The present invention is directed to solving the above problems of the prior art and providing a check valve capable of closing a check circuit.

The purpose of the utility model can be realized by the following technical scheme: a quick-closing check valve comprises a valve body with a water inlet and a water outlet and a valve core unit arranged in the valve body, and is characterized in that the valve body comprises a first assembly shell with a first valve cavity and a second assembly shell with a second valve cavity, the first assembly shell and the second assembly shell enable the first valve cavity and the second valve cavity to be communicated with each other through a connecting portion, the water inlet and the water outlet are respectively arranged on the first assembly shell and the second assembly shell, the first assembly shell is located in the first valve cavity and is provided with a check unit which is connected with the first valve cavity and is used for forming a check loop, and the second assembly shell is located in the second valve cavity and is provided with a closed unit which is connected with the second valve cavity and can close the water outlet.

In the above-mentioned quick-closing check valve, a flange portion which is fixedly connected with the outer peripheral wall of the lower end portion of the second assembling shell and facilitates installation of the second assembling shell is arranged on the outer peripheral wall of the lower end portion of the second assembling shell.

In the above-mentioned quick-closing check valve, the connecting portion are arranged in a hollow manner and form a communicating cavity, two ends of the connecting portion are fixedly connected with the first assembling shell and the second assembling shell respectively, and the connecting portion is located in the communicating cavity and is provided with a buffer plate which is fixedly connected with the communicating cavity and is arranged in an arc shape.

In the above-mentioned quick-closing check valve, the non return unit comprises a valve core, a conflict spring and a conflict block, the inner peripheral wall of the first assembling shell is provided with an axial outward bulge which is in conflict with the valve core and forms a convex ring part of a valve port, the first assembling shell is positioned at the end part far away from the water inlet and is provided with an assembling port which is coaxially arranged with the water inlet and is convenient for the assemblage of the conflict block, two ends of the conflict spring are in conflict with the valve core and the conflict block respectively, and the valve core is in conflict with the convex ring part through the conflict spring.

In the above-mentioned quick-closing check valve, the end surfaces of the valve core and the abutting block, which abut against the abutting spring, are provided with limiting protrusions which protrude outward in the axial direction and prevent the abutting spring from being dislocated, the end surface of the valve core, which is located at the valve port, is provided with a sliding protrusion which protrudes outward in the axial direction and slidably extends into the valve port, and a sealing ring for enhancing sealing performance is arranged between the sliding protrusion and the valve port.

In the above-mentioned fast-closing check valve, the end surface of the protruding ring part, which is located against the valve core, is provided with a plurality of slide ways, and the end surface of the valve core, which is against the protruding ring part, is provided with a plurality of slide bars, the number of which is the same as the number of the slide ways, the slide bars extend into the corresponding slide ways in a sliding manner, and the slide bars are connected with the valve core.

In the quick-closing check valve, the sealing unit consists of a valve rod, a valve clack and an assembling sleeve, the valve clack is arranged at the lower end part of the valve rod, the valve clack is abutted against the inner wall of a water outlet in the assembling shell II through the valve rod, the upper end part of the assembling shell II is provided with an installing port for installing the assembling sleeve, the assembling sleeve is provided with a sliding hole channel for the valve rod to slide through, a sealing ring for strengthening the sealing property is also arranged between the valve rod and the assembling sleeve, a limiting unit for limiting the position of the valve rod is also arranged between the valve rod and the assembling sleeve, and the limiting unit is positioned above the sealing ring.

In foretell check valve of closing soon, spacing unit constitute by a plurality of spacer pin, smooth pore canal be multistage ladder structure setting, the valve rod be located the periphery wall of smooth pore canal department and be provided with rather than the ladder arch of sliding the laminating, supporting periphery wall of equipment on set up the mounting hole that a plurality of supplied corresponding spacer pin to install, the ladder arch be located the periphery wall of mounting hole department and set up the mounting groove that a plurality of supplied corresponding spacer pin to install.

Compared with the prior art, this fast check valve that closes has following advantage:

1. the first assembling shell and the second assembling shell enable the first valve cavity and the second valve cavity to be communicated with each other through the connecting portion, the first assembling shell is located in the first valve cavity and is internally provided with a check unit which is connected with the first valve cavity and is used for forming a check loop, the second assembling shell is located in the second valve cavity and is internally provided with a sealing unit which is connected with the second valve cavity and can seal a water outlet, and due to the arrangement of the structure, when the check structure is damaged, the water outlet can be closed through the sealing unit, and meanwhile maintenance and replacement of the check structure are facilitated.

Drawings

Fig. 1 is a perspective view of the present quick-closing check valve.

Fig. 2 is a schematic cross-sectional view of the mounting shell of the present quick-closing check valve.

Fig. 3 is a schematic sectional view showing the first and second assembling cases and the connecting portion of the quick-closing check valve.

In the figure, 1, a valve cavity I; 2. assembling a first shell; 3. a second valve cavity; 4. assembling a second shell; 5. a connecting portion; 6. a flange portion; 7. a communicating cavity; 8. a buffer plate; 9. a valve core; 10. against the spring; 11. a contact block; 12. a convex ring part; 13. an assembly port; 14. a limiting bulge; 15. a sliding projection; 16. a slideway; 17. a slide bar; 18. a valve stem; 19. a valve flap; 20. assembling; 21. an installation port; 22. a sliding hole channel; 23. and a limiting pin.

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.

As shown in figures 1, 2 and 3, the quick-closing check valve comprises a valve body with a water inlet and a water outlet and a valve core unit arranged in the valve body, wherein the valve body consists of a first assembly shell with a first valve cavity and a second assembly shell with a second valve cavity, the first assembly shell and the second assembly shell enable the first valve cavity and the second valve cavity to be communicated with each other through a connecting part, the water inlet and the water outlet are respectively arranged on the first assembly shell and the second assembly shell, the central axis of the first assembly shell is perpendicular to the central axis of the second assembly shell, the first assembly shell is positioned in the first valve cavity and is provided with a check unit which is connected with the first valve cavity and is used for forming a check loop, the second assembly shell is positioned in the second valve cavity and is provided with a closed unit which is connected with the second assembly shell and can seal the water outlet, the inner wall of the second assembly shell forms a valve port through matching with the closed unit and the water outlet, and the check unit consists of the valve core, a check spring and a check block, the inner peripheral wall of the first assembling shell is provided with an axially outward bulge which is abutted against the valve core and forms a convex ring part of a valve port, the end part of the first assembling shell, which is far away from the water inlet, is provided with an assembling port which is coaxially arranged with the water inlet and is convenient for assembling the abutting block, the abutting block is connected with the first assembling shell through threads, so that the abutting block is matched with the first assembling shell to enable the assembling port to form sealing, two ends of an abutting spring are respectively abutted against the valve core and the abutting block, the valve core is abutted against the convex ring part through the abutting spring, the end surfaces of the valve core and the abutting block, which are abutted against the abutting spring, are respectively provided with a limiting bulge which is axially outward bulge and prevents the offsetting spring from being staggered, the end surface of the valve core, which is positioned at the valve port, is provided with a sliding bulge which is axially outward and slidably extends into the valve port, and a sealing ring which enhances the sealing performance is arranged between the sliding bulge and the convex ring part and the valve port, the sealing unit consists of a valve rod, a valve clack and an assembly sleeve, the valve clack is arranged at the lower end part of the valve rod, the valve clack is abutted against the inner wall of a water outlet in the assembly shell II through the valve rod and forms sealing, the upper end part of the assembly shell II is provided with an installation port for the assembly sleeve to be installed, the assembly sleeve is in threaded fit connection with the assembly shell II, the assembly sleeve is provided with a sliding hole channel for the valve rod to slide through, a sealing ring for enhancing the sealing performance is also arranged between the valve rod and the assembly sleeve, a limiting unit for limiting the position of the valve rod is also arranged between the valve rod and the assembly sleeve and is positioned above the sealing ring, the outer peripheral wall of the valve clack is provided with an inclined surface, the inner peripheral wall of the assembly shell II is also provided with an inclined surface, the limiting unit consists of a plurality of limiting pins, and the sliding hole channel is of a multistage stepped structure and forms a stepped groove structure, the valve rod is provided with on the periphery wall that is located the slipway department rather than slide the laminating and protruding with ladder groove matched with ladder, sets up the mounting hole that a plurality of supplied corresponding spacer pin preliminary installation on the periphery wall of equipment cover, sets up the mounting groove that a plurality of supplied the complete installation of corresponding spacer pin on the periphery wall that the ladder arch is located mounting hole department, and for the ease of the assembly, the bellied upper end of ladder is polygonized structure.

In a further elaboration, for convenience of assembly, a flange portion which is fixedly connected with the peripheral wall of the lower end portion of the second assembling shell and is convenient for installation of the second assembling shell is arranged on the peripheral wall of the lower end portion of the second assembling shell.

In order to further explain, in order to slow down the fluid impact to the valve rod, connecting portion are the cavity setting, and form the intercommunication chamber that makes valve pocket one and valve pocket two communicate each other, and the both ends of connecting portion link firmly with assembly shell one and assembly shell two respectively to form the setting of integrative setting shaping structure, assembly shell one and assembly shell two are located the perisporium of junction and offer the intercommunication mouth of being convenient for communicate each other, and connecting portion are located the intercommunication intracavity and are provided with rather than linking firmly and being the buffer board that the arc set up mutually.

In order to ensure the non-return effect, the convex ring part is positioned on the end surface which is abutted to the valve core and is provided with a plurality of slideways, the end surface which is abutted to the valve core and the convex ring part is provided with a plurality of slide bars, the number of the slide bars is the same as that of the slideways, the slide bars slide into the corresponding slideways and are connected with the valve core, and the valve core is prevented from shifting through the slide bars.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A quick-closing check valve comprises a valve body with a water inlet and a water outlet and a valve core (9) unit arranged in the valve body, and is characterized in that the valve body consists of a first assembling shell (2) with a first valve cavity (1) and a second assembling shell (4) with a second valve cavity (3), the first assembling shell (2) and the second assembling shell (4) enable the first valve cavity (1) and the second valve cavity (3) to be communicated with each other through a connecting part (5), the water inlet and the water outlet are respectively arranged on the first assembling shell (2) and the second assembling shell (4), the first assembling shell (2) is positioned in the first valve cavity (1) and is provided with a check unit which is connected with the first valve cavity and is used for forming a check loop, and the second assembling shell (4) is positioned in the second valve cavity (3) and is provided with a closed unit which is connected with the first valve cavity and can close the water outlet.

2. The quick-closing check valve as claimed in claim 1, wherein the outer peripheral wall of the lower end portion of the second assembling housing (4) is provided with a flange portion (6) fixedly connected thereto for facilitating the installation of the second assembling housing (4).

3. The quick-closing check valve according to claim 1, characterized in that the connecting portion (5) is hollow and forms a communicating chamber (7), two ends of the connecting portion (5) are fixedly connected with the first assembling shell (2) and the second assembling shell (4) respectively, and the connecting portion (5) is provided with a buffer plate (8) fixedly connected with the communicating chamber (7) and arranged in an arc shape.

4. The quick-closing check valve as claimed in claim 1, wherein the check unit comprises a valve core (9), a contact spring (10) and a contact block (11), an axially outward protrusion is disposed on an inner peripheral wall of the first assembling shell (2) and contacts with the valve core (9) to form a convex ring portion (12) of the valve port, an assembling port (13) which is coaxially disposed with the water inlet and facilitates assembly of the contact block (11) is disposed on an end portion of the first assembling shell (2) away from the water inlet, two ends of the contact spring (10) respectively contact with the valve core (9) and the contact block (11), and the valve core (9) contacts with the convex ring portion (12) through the contact spring (10).

5. The quick-closing check valve according to claim 4, characterized in that the end surfaces of the valve core (9) and the abutting block (11) abutting against the abutting spring (10) are provided with limiting protrusions (14) which protrude outward in the axial direction and prevent the abutting spring (10) from being dislocated, the end surface of the valve core (9) at the valve port is provided with a sliding protrusion (15) which protrudes outward in the axial direction and protrudes into the valve port in a sliding manner, and a sealing ring for enhancing the sealing performance is arranged between the sliding protrusion (15) and the valve port.

6. The quick-closing check valve according to claim 5, characterized in that the end surface of the convex ring part (12) abutting against the valve core (9) is provided with a plurality of slide ways (16), the end surface of the valve core (9) abutting against the convex ring part (12) is provided with a plurality of slide bars (17) which have the same number as the slide ways (16), extend into the corresponding slide ways (16) in a sliding manner, and are connected with the valve core (9).

7. A quick-closing non-return valve according to claim 1, characterized in that the closing unit consists of a valve stem (18), a flap (19) and a fitting sleeve (20), the flap (19) being arranged with the lower end of the valve stem (18), the valve rod (18) enables the valve clack (19) to be abutted against the inner wall of the water outlet in the second assembling shell (4), the upper end part of the second assembling shell (4) is provided with a mounting opening (21) for mounting an assembling sleeve (20), the assembly sleeve (20) is provided with a sliding hole channel (22) for the valve rod (18) to slide through, a sealing ring for strengthening the sealing property is also arranged between the valve rod (18) and the assembly sleeve (20), and a limiting unit used for limiting the position of the valve rod (18) is also arranged between the valve rod (18) and the assembling sleeve (20), and the limiting unit is positioned above the sealing ring.

8. The quick-closing check valve according to claim 7, characterized in that the limiting unit is composed of a plurality of limiting pins (23), the slide hole (22) is arranged in a multistage ladder structure, a ladder protrusion which is attached to the slide hole and is arranged on the peripheral wall of the valve rod (18) at the slide hole (22) is arranged, a plurality of mounting holes for mounting the corresponding limiting pins (23) are formed in the peripheral wall of the assembly sleeve (20), and a plurality of mounting grooves for mounting the corresponding limiting pins (23) are formed in the peripheral wall of the mounting holes of the ladder protrusion.