CN220102220U - Check valve convenient to maintain - Google Patents

Abstract

The utility model relates to a check valve convenient to maintain, which comprises a valve body, wherein a lower end cover is vertically and fixedly arranged on the outer annular wall of the valve body, and is characterized in that a plurality of nuts are detachably arranged on the lower bottom of the lower end cover, an upper end cover is buckled on the top end cover of the lower end cover, a plurality of rotary round blocks are rotatably arranged in the upper end cover, small gear rings are fixedly sleeved on the outer annular wall of the rotary round blocks, large gear rings are rotatably arranged in the upper end cover, the small gear rings are meshed with the large gear rings, mounting mechanisms are arranged in the upper end covers, the mounting mechanisms comprise square columns, the square columns respectively penetrate through corresponding rotary round blocks, threaded shafts are fixedly arranged at the bottom ends of the square columns, the threaded shafts are respectively and spirally arranged in corresponding nuts, and when any square column is rotated, the synchronous rotation of other square columns can be realized through the meshed transmission of the small gear rings and the large gear rings, so that the synchronous threads of the threaded shafts are arranged in the corresponding nuts, and the check valve is convenient to maintain.

Description

Check valve convenient to maintain

Technical Field

The utility model relates to the technical field of check valves, in particular to a check valve convenient to maintain.

Background

The check valve is a valve with a circular valve clack and used for blocking the backflow of medium by the action of self weight and medium pressure, and belongs to automatic valves, which are also called check valve, one-way valve, reflux valve or isolation valve. The movement modes of the valve clack are divided into a lifting type and a swing type. The lifting check valve is similar to a stop valve in structure, and only lacks a valve rod for driving the valve clack. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). When the inlet pressure is greater than the sum of the valve flap weight and its flow resistance, the valve is opened. Otherwise, the valve is closed when the medium flows backwards.

When the check valve is damaged and maintained, a plurality of bolts between the upper end cover and the valve body are required to be unscrewed and disassembled firstly, the bolts are disassembled in a fixed nut and then the bolts are reversely rotated, and the process of screwing the bolts on the check valve greatly reduces the maintenance efficiency due to the plurality of bolts on the check valve, so that the maintenance is inconvenient.

Disclosure of Invention

The utility model solves the problem of providing a check valve convenient to maintain so as to solve the technical problems in the background art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a easy maintenance's check valve, includes the valve body, the perpendicular fixed mounting lower extreme of outer annular wall of valve body, its characterized in that, a plurality of nuts of lower extreme detachable installation of lower extreme, the top lid of lower extreme is detained the upper end cover, a plurality of rotatory buttons of upper end cover internal rotation installation, a plurality of the outer annular wall of rotatory button is fixed the suit pinion ring, still rotate the installation bull gear ring in the upper end cover, a plurality of pinion ring all with the installation of bull gear ring meshing, a plurality of all be provided with installation mechanism in the upper end cover, a plurality of installation mechanism all includes square post, a plurality of square post runs through respectively and corresponds rotatory button, a plurality of the equal fixed mounting screw thread axle of bottom of square post, a plurality of screw thread axle is threaded installation respectively in corresponding nut.

Preferably, the top ends of the rotary round blocks are provided with square holes in a penetrating mode, and the square columns are respectively matched with and penetrate through the corresponding square holes.

Preferably, the top ends of the square columns are fixedly provided with regular hexagonal prisms, and the regular hexagonal prisms are arranged at the top ends of the upper end covers.

Preferably, the lower bottom of the valve body is provided with a plurality of regular hexagonal grooves, and the upper groove tops of the regular hexagonal grooves are provided with limiting jacks.

Preferably, the nuts are respectively embedded into the corresponding regular hexagonal grooves, the top ends of the nuts are vertically and fixedly provided with limiting plugs, and the limiting plugs are respectively inserted into the corresponding limiting jacks.

Preferably, the valve body is internally provided with a valve core, the top end of the valve core is provided with a spring, the top end of the spring is arranged to be in contact with the bottom end of the upper end cover, a sealing gasket is arranged between the spring and the upper end cover, and the two ends of the valve body are fixedly sleeved with flange mounting rings.

The beneficial effects of the utility model are as follows:

firstly, the screw cap is detachably arranged at the bottom of the lower end cover, so that the screw cap is not required to be fixed in the process of screwing or unscrewing the screw shaft and the screw cap, the disassembly and the installation of the bolt structure are convenient, and the screw cap is primarily characterized by convenient maintenance;

then, a plurality of the top of screw shaft is fixed mounting square post, and a plurality of square posts run through and insert corresponding rotatory circle piece, rotatory circle piece outer ring wall fixed mounting pinion ring, and a plurality of pinion rings are jointly with the installation of bull gear ring meshing, just can realize other square post synchronous rotation through the meshing transmission of pinion ring and bull gear ring when rotatory arbitrary square post, and then make a plurality of screw shaft synchronous screw thread plug-ins in the nut that corresponds, further have easy maintenance's characteristics.

Drawings

FIG. 1 is a schematic view of the overall appearance structure of the present utility model;

FIG. 2 is a schematic view of the mounting structure of the mounting mechanism of the present utility model;

FIG. 3 is a schematic view of a nut structure according to the present utility model;

FIG. 4 is a schematic view of the mounting mechanism of the present utility model.

Legend description:

1. a valve body; 11. a lower end cap; 12. a regular hexagonal groove; 13. limiting jack; 14. a screw cap; 15. a limit plug; 16. a flange mounting ring;

2. an upper end cap; 21. rotating the round block; 22. a pinion ring; 23. a large gear ring; 24. a pull ring;

3. a mounting mechanism; 31. square columns; 32. a threaded shaft; 33. regular hexagonal prism.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Specific examples are given below.

Referring to fig. 1 to 4, a check valve convenient to maintain comprises a valve body 1, wherein a lower end cover 11 is vertically and fixedly arranged on the outer annular wall of the valve body 1, the lower end cover 11 is designed to be convenient to be matched with the detachable installation of an upper end cover 2, a plurality of nuts 14 are detachably arranged at the lower bottom of the lower end cover 11, the bottom ends of the nuts 14 are protruded out of the lower bottom surface of the lower end cover 11 and are convenient to take out, an upper end cover 2 is buckled on the top end cover 11, a plurality of rotary round blocks 21 are rotatably arranged in the upper end cover 2, pinion rings 22 are fixedly sleeved on the outer annular wall of the rotary round blocks 21, a large gear ring 23 is rotatably arranged in the upper end cover 2, the rotary round blocks 21, the pinion rings 22 and the large gear ring 23 only keep horizontal rotation and do not lift up and down, a plurality of pinion rings 22 are meshed with the large gear ring 23, a plurality of mounting mechanisms 3 are arranged in the upper end cover 2, the square columns 31 respectively penetrate through corresponding rotary round blocks 21, a plurality of screw shafts 32 are fixedly arranged at the bottom ends of the square columns 31, a plurality of the square columns 31 respectively, a plurality of screw shafts 32 are correspondingly provided with a plurality of square screw holes 31 respectively penetrating through the square nuts 31, and a plurality of stable round holes are correspondingly arranged in the square columns 31, and a plurality of round holes are correspondingly arranged in the top ends of the square columns 31 respectively;

referring to fig. 1 to 4, particularly, the top ends of the square columns 31 are fixedly provided with regular hexagonal prisms 33, so that the square columns 31, that is, the corresponding threaded shafts 32, are conveniently driven to rotate, the regular hexagonal prisms 33 are all arranged at the top ends of the upper end covers 2, the regular hexagonal prisms are conveniently driven to rotate by tools such as a wrench, a plurality of regular hexagonal grooves 12 are formed in the lower bottom of the valve body 1, limit jacks 13 are formed in the upper groove tops of the regular hexagonal grooves 12, a plurality of nuts 14 are respectively embedded and arranged in the corresponding regular hexagonal grooves 12, limit plugs 15 are vertically and fixedly arranged at the top ends of the nuts 14, the limit plugs 15 are respectively inserted into the corresponding limit jacks 13, and the limit plugs 15 are tightly inserted into the limit jacks 13 without dropping.

Referring to fig. 1 to 4, particularly, a valve core is installed in a valve body 1, the valve core is used for plugging a flow channel in the valve body 1, a spring is installed at the top end of the valve core, the telescopic movement of the spring controls the valve core to plug and open the flow channel, the top end of the spring is installed to be in contact with the bottom end of an upper end cover 2, a sealing gasket is arranged between the spring and the upper end cover 2, the sealing performance of the valve body 1 is improved, flange installation rings 16 are fixedly sleeved at two ends of the valve body 1, butt joint installation is facilitated, a pull ring 24 is fixedly installed at the center position of the top end of the upper end cover 2, and the upper end cover 2 is conveniently taken down after a plurality of threaded shafts 32 are separated from corresponding nuts 14.

Working principle:

firstly, a plurality of nuts 14 are respectively clamped into corresponding regular hexagonal grooves 12, at the moment, a limit plug 15 at the top end of each nut 14 is firmly inserted into a corresponding limit jack 13, the corresponding nut 14 is forced to be limited in the corresponding regular hexagonal groove 12 due to tight insertion, then an upper end cover 2 is placed on a lower end cover 11, and a plurality of mounting mechanisms 3 are respectively inserted, so that the bottom ends of a plurality of threaded shafts 32 are abutted against the upper threaded holes of the corresponding nuts 14;

secondly, one regular hexagonal prism 33 is arbitrarily selected and driven to rotate by tools such as a wrench, the square columns 31 arranged at the bottom ends of the regular hexagonal prisms 33 are forced to synchronously rotate, the square columns 31 penetrate through the corresponding rotating round block 21, so that the corresponding rotating round block 21 is synchronously rotated, the outer annular wall of the rotating round block 21 is fixedly sleeved with the pinion ring 22, so that the pinion ring 22 is driven to rotate, and because the pinion rings 22 are meshed with the large gear ring 23 for transmission, after any one of the pinion rings 22 rotates, the large gear ring 23 and other pinion rings 22 are driven to rotate at the same speed, the square columns 31 are inserted into the square holes formed in the penetrating bottom ends of the other pinion rings 22 in a sliding manner, the bottom ends of the square columns 31 are respectively provided with the threaded shafts 32, and in the process, the square columns 31 penetrate through the corresponding nut 14 in a sliding manner due to the spiral descending of the corresponding threaded shafts 32, so that the corresponding rotating round block 21 is synchronously penetrated in a sliding manner, and the operation efficiency is high;

and thirdly, if disassembly is required, on the premise that the nut 14 is not required to be touched, only any one of the regular hexagonal prisms 33 can be reversely rotated, and the steps of the second step are reversely carried out, so that a plurality of threaded shafts 32 are separated from the corresponding nuts 14 respectively, the upper end cover 2 is conveniently and directly disassembled from the lower end cover 11, and further, the replacement or maintenance of internal parts such as valve cores, springs and sealing rings in the valve body 1 is conveniently carried out.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a convenient maintenance's check valve, includes valve body (1), the perpendicular fixed mounting lower extreme cover (11) of outer annular wall of valve body (1), a serial communication port, a plurality of nuts (14) of the detachable installation of lower extreme cover (11), the top lid of lower extreme cover (11) is detained upper end cover (2), a plurality of rotatory circle pieces (21) of upper end cover (2) internal rotation installation, a plurality of the outer annular wall of rotatory circle piece (21) is fixed suit pinion ring (22), still rotate in upper end cover (2) and install gear wheel ring (23), a plurality of pinion ring (22) all with gear wheel ring (23) meshing installation, a plurality of all be provided with installation mechanism (3) in upper end cover (2), a plurality of installation mechanism (3) all include square post (31), a plurality of square post (31) run through respectively and correspond rotatory circle piece (21), a plurality of the equal fixed mounting screw thread axle (32) of bottom of square post (31), a plurality of screw thread axle (32) are installed respectively in corresponding nut (14).

2. A check valve according to claim 1, characterized in that the top ends of the rotary round blocks (21) are provided with square holes penetrating through the bottom ends, and the square columns (31) are respectively adapted to penetrate through the corresponding square holes.

3. The check valve with convenient maintenance according to claim 1, wherein the top ends of the square columns (31) are fixedly provided with regular hexagonal columns (33), and the regular hexagonal columns (33) are arranged at the top ends of the upper end cover (2).

4. The check valve with convenient maintenance according to claim 1, wherein the lower bottom of the valve body (1) is provided with a plurality of regular hexagonal grooves (12), and the upper groove tops of the regular hexagonal grooves (12) are provided with limiting insertion holes (13).

5. The check valve with convenient maintenance according to claim 4, wherein a plurality of nuts (14) are respectively embedded in the corresponding regular hexagonal grooves (12), limiting plugs (15) are vertically and fixedly installed at the top ends of the nuts (14), and the limiting plugs (15) are respectively inserted into the corresponding limiting insertion holes (13).

6. The check valve with convenient maintenance according to claim 1, wherein a valve core is installed in the valve body (1), a spring is installed at the top end of the valve core, the top end installation of the spring is in conflict with the bottom end of the upper end cover (2), a sealing gasket is arranged between the spring and the upper end cover (2), flange installation rings (16) are fixedly sleeved at two ends of the valve body (1), and a pull ring (24) is fixedly installed at the center of the top end of the upper end cover (2).