CN212928892U

CN212928892U - Safety valve with adjustable open-close differential pressure

Info

Publication number: CN212928892U
Application number: CN202021913504.XU
Authority: CN
Inventors: 张健熙
Original assignee: Henghua Valve Co ltd
Current assignee: Henghua Valve Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-09
Anticipated expiration: 2030-09-04

Abstract

The utility model relates to the technical field of safety valves, in particular to an open-close pressure difference adjustable safety valve, which comprises a safety valve main body, the fixed cover in top of integrated into one piece in the relief valve main part and the spring of setting in the fixed cover in top, be provided with a plurality of guide ways that are cyclic annular equidistant range on the top position inner wall of the fixed cover in top, the guide way sets up along the direction of height of the fixed cover in top, still be provided with on the fixed cover in top and open and close pressure differential adjusting device, it includes the micro motor of fixed mounting on the fixed cover top surface in top to open and close pressure differential adjusting device, fixed mounting has the screw rod that is vertical form setting on micro motor's the output shaft front end axis body, threaded connection has the screw sleeve on the screw rod, just be provided with the direction slider to the position department of guide way on the annular side. The utility model discloses be convenient for adjust and open and close pressure differential, facilitate the use, bring the facility for the user.

Description

Safety valve with adjustable open-close differential pressure

Technical Field

The utility model relates to a relief valve technical field, specifically speaking relates to a relief valve with adjustable open and close pressure differential.

Background

The safety valve is in a normally closed state under the action of external force, when the medium pressure in equipment or a pipeline rises to exceed a specified value, the medium pressure in the pipeline or the equipment is prevented from exceeding a specified value by discharging the medium to the outside of a system, at present, the types of the safety valve are more, wherein the safety valve with the adjustable opening and closing pressure difference is included, when the safety valve with the adjustable opening and closing pressure difference is adjusted, the effect of adjusting the opening and closing pressure difference is mainly achieved by adjusting the upper position and the lower position of a spring in the safety valve with the adjustable opening and closing pressure difference, but when the conventional adjustable safety valve with the adjustable opening and closing pressure difference is used, the operation of adjusting the spring is not convenient enough, certain.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a relief valve with adjustable open and close pressure differential to solve the defect that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a safety valve with an adjustable opening and closing pressure difference comprises a safety valve main body, a top fixing sleeve and a spring, wherein the top fixing sleeve is integrally formed on the safety valve main body, the spring is arranged in the top fixing sleeve, a plurality of guide grooves which are annularly arranged at equal intervals are formed in the inner wall of the top position of the top fixing sleeve, the guide grooves are arranged along the height direction of the top fixing sleeve, an opening and closing pressure difference adjusting device is further arranged on the top fixing sleeve and comprises a micro motor fixedly arranged on the top surface of the top fixing sleeve, the front end of an output shaft of the micro motor is vertically and downwards arranged, a screw rod which is vertically arranged is fixedly arranged on a shaft body at the front end of the output shaft of the micro motor, a threaded sleeve is in threaded connection with the screw rod, and a guide sliding block is arranged on the annular side surface, the guide sliding block is positioned in the guide groove and is in sliding connection with the guide groove, and the top end of the spring is tightly welded on the bottom surface of the threaded sleeve.

Preferably, the fixed base on the micro motor is fixedly installed on the top surface of the top fixed sleeve through a plurality of fastening screws, so that the micro motor can be conveniently and fixedly installed.

Preferably, the tail end of the output shaft of the micro motor is vertically and upwards arranged, a fixing sleeve is sleeved on a shaft body at the tail end of the output shaft of the micro motor, the fixing sleeve is fixedly connected with the shaft body at the tail end of the output shaft of the micro motor through a fastening screw, a plurality of annular fan blades which are arranged at equal intervals are arranged on the annular side surface of the fixing sleeve, and therefore the micro motor is guaranteed to work when in use, the fan blades can be driven to rotate by the rotation of the output shaft on the fixing sleeve, and the effect of heat dissipation of the micro motor is achieved.

Preferably, still be provided with a plurality of mounting panels that are cyclic annular equidistant range on the top barrel lateral surface of the fixed cover in top, still be provided with the safety cover on the fixed cover in top, the safety cover is in through a plurality of fastening screw fixed mounting on the mounting panel, realize protecting micro motor in inside, avoid micro motor directly to expose outside and damage.

Preferably, the outer surface of the protective cover is provided with a heat insulation reflective film, so that the protective cover has a better heat insulation effect.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a what set up opens and close pressure differential adjusting device guarantees when using, can utilize micro motor work, output shaft on it rotates and drives the screw rod and rotate, further drives the threaded sleeve and reciprocates to reach the effect of position about the adjustment spring, finally reach the effect that the pressure differential was opened and close in the adjustment, facilitate the use, solved the conventional relief valve with adjustable open and close pressure differential when using, the operation of its adjustment spring is convenient inadequately, can hinder certain time, bring inconvenient problem for the user.

2. The utility model discloses a fan blade and safety cover that set up guarantee when using, and the safety cover can play thermal-insulated effect, and fan blade can play radiating effect, does benefit to the life who prolongs micro motor, offers convenience for the user.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the explosion structure of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2 according to the present invention;

fig. 4 is a schematic view of a part of the structure of the present invention.

In the figure: 1. a safety valve main body; 10. a top fixing sleeve; 101. a guide groove; 102. mounting a plate; 11. a spring; 2. opening and closing the differential pressure regulating device; 20. a micro motor; 21. a screw; 22. a threaded sleeve; 221. a guide slider; 23. fixing the sleeve; 24. a fan blade; 25. a protective cover; 251. a heat-insulating reflective film.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a safety valve with adjustable opening and closing pressure difference comprises a safety valve main body 1, a top fixing sleeve 10 and a spring 11, wherein the top fixing sleeve 10 is integrally formed on the safety valve main body 1, the spring 11 is arranged in the top fixing sleeve 10, a plurality of guide grooves 101 which are annularly arranged at equal intervals are formed in the inner wall of the top position of the top fixing sleeve 10, the guide grooves 101 are arranged along the height direction of the top fixing sleeve 10, an opening and closing pressure difference adjusting device 2 is further arranged on the top fixing sleeve 10, the opening and closing pressure difference adjusting device 2 comprises a micro motor 20 fixedly installed on the top surface of the top fixing sleeve 10, a fixing base on the micro motor 20 is fixedly installed on the top surface of the top fixing sleeve 10 through a plurality of fastening screws, corresponding threaded holes are formed in the fixing base on the micro motor 20 and the top surface of the top fixing sleeve 10, and then the fixing base, the micro motor 20 is convenient to be fixedly installed;

specifically, the front end of the output shaft of the micro motor 20 is arranged vertically downwards, a screw 21 arranged vertically is tightly welded on the shaft body at the front end of the output shaft of the micro motor 20, a threaded sleeve 22 is connected on the screw 21 in a threaded manner, a corresponding threaded hole is arranged in the threaded sleeve 22, the screw 21 penetrates through the threaded hole in the threaded sleeve 22 and is in threaded connection with the threaded hole, a guide slider 221 is integrally formed at the position, facing the guide groove 101, on the annular side surface of the threaded sleeve 22, the guide slider 221 is located in the guide groove 101 and is in sliding connection with the guide groove 101, the top end of the spring 11 is tightly welded on the bottom surface of the threaded sleeve 22, when the micro motor 20 is used, the output shaft on the micro motor can be used for rotating the screw 21, the screw 21 is rotated to drive the threaded sleeve 22 to move upwards or downwards, and the position of the spring 11 is further, is convenient to use.

In this embodiment, the end of the output shaft of the micro motor 20 is vertically arranged upward, the fixing sleeve 23 is sleeved on the end shaft body of the output shaft of the micro motor 20, the fixing sleeve 23 is a hollow columnar structure, the fixing sleeve 23 is fixedly connected with the end shaft body of the output shaft of the micro motor 20 through a fastening screw, corresponding threaded holes are respectively formed in the fixing sleeve 23 and the output shaft of the micro motor 20, and then the fixing sleeve 23 is fixedly installed on the output shaft of the micro motor 20 through the fastening screw, so that the fixing sleeve 23 can be conveniently fixedly installed and disassembled; the annular side surface of the fixed sleeve 23 is integrally formed with a plurality of fan blades 24 which are arranged in an annular and equidistant manner, so that when the miniature motor 20 is used, the output shaft on the miniature motor 20 can rotate to drive the fan blades 24 to rotate, and the effect of radiating the miniature motor 20 per se is achieved.

Specifically, still integrated into one piece has a plurality of mounting panels 102 that are cyclic annular equidistant range on the fixed cover 10 in top barrel lateral surface in top, still is provided with safety cover 25 on the fixed cover 10 in top, and safety cover 25 is through a plurality of fastening screw fixed mounting on mounting panel 102, and micro motor 20 is located the inside of safety cover 25, realizes protecting micro motor 20 in inside, avoids micro motor 20 directly to expose outside and damage.

Furthermore, a heat insulation reflective film 251 is tightly adhered to the outer surface of the protective cover 25, and the protective cover 25 has a good heat insulation effect through the arranged heat insulation reflective film 251.

It should be noted that the micro motor 20 in the present embodiment is a conventional technology, and is not described herein again.

The utility model discloses a relief valve with adjustable open and close pressure differential is when using, switch on external power supply and make its work with micro motor 20, micro motor 20 works, output shaft cisoid on it rotates or reverse pivoted in time, can drive screw rod 21 and rotate, screw rod 21 rotates and drives screw sleeve 22 and make progress or downstream, further reach and adjust the position of spring 11, thereby finally reach the effect that the adjustment was opened and close pressure differential, facilitate the use, the conventional relief valve with adjustable open and close pressure differential is when using of having solved, its operation of adjusting spring is convenient inadequately, can delay certain time, bring inconvenient problem for the user.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a relief valve with adjustable start and stop pressure differential, includes safety valve main part (1), the fixed cover in top (10) of integrated into one piece on safety valve main part (1) and spring (11) of setting in the fixed cover in top (10), its characterized in that: be provided with a plurality of guide ways (101) that are cyclic annular equidistant range on the top position inner wall of the fixed cover in top (10), guide way (101) are along the direction of height setting of the fixed cover in top (10), still be provided with on the fixed cover in top (10) and open and close pressure differential adjusting device (2), it includes fixed mounting and is in to open and close pressure differential adjusting device (2) micro motor (20) on the fixed cover in top (10) top surface, the output shaft front end of micro motor (20) is vertical setting downwards, fixed mounting has screw rod (21) that are vertical form setting on the output shaft front end axis body of micro motor (20), threaded connection has threaded sleeve (22) on screw rod (21), just right on the annular side of threaded sleeve (22) the position department of guide way (101) is provided with direction slider (221), direction slider (221) are located in guide way (101) and with between guide way (101) smooth The top end of the spring (11) is tightly welded on the bottom surface of the threaded sleeve (22).

2. The safety valve with adjustable opening and closing differential pressure according to claim 1, characterized in that: the fixed base on the micro motor (20) is fixedly arranged on the top surface of the top fixed sleeve (10) through a plurality of fastening screws.

3. The safety valve with adjustable opening and closing differential pressure according to claim 1, characterized in that: the tail end of an output shaft of the micro motor (20) is vertically and upwards arranged, a fixing sleeve (23) is sleeved on a shaft body at the tail end of the output shaft of the micro motor (20), the fixing sleeve (23) is fixedly connected with the shaft body at the tail end of the output shaft of the micro motor (20) through a fastening screw, and a plurality of fan blades (24) which are annularly arranged at equal intervals are arranged on the annular side surface of the fixing sleeve (23).

4. The safety valve with adjustable opening and closing differential pressure according to claim 1, characterized in that: still be provided with a plurality of mounting panels (102) that are cyclic annular equidistant range on the top barrel lateral surface of the fixed cover in top (10), still be provided with safety cover (25) on the fixed cover in top (10), safety cover (25) are in through a plurality of fastening screw fixed mounting on mounting panel (102).

5. The safety valve with adjustable opening and closing pressure difference according to claim 4, characterized in that: and a heat-insulating reflective film (251) is arranged on the outer surface of the protective cover (25).