Diaphragm type electric control valve

Abstract

The utility model relates to the technical field of regulating valves, in particular to a diaphragm type electric regulating valve. The adjusting valve comprises an adjusting valve seat, a valve rod is movably arranged in the adjusting valve seat, and a valve deck mechanism is fixedly arranged on the top of the adjusting valve seat. A supporting frame is fixedly arranged on the top face of the valve deck mechanism, and an executing mechanism is arranged on the top of the supporting frame in a threaded mode. Connecting threaded pipes are fixedly arranged at the two ends of the adjusting valve seat correspondingly. According to the diaphragm type electric control valve, through the arrangement of the actuating mechanism, when the diaphragm type electric control valve is used, the electric push rod actuator is used for extruding the diaphragm and driving the valve rod to ascend and descend, so that the control valve adjusts the medium flow, and when the electric push rod actuator is accidentally powered off or is damaged and cannot work, a worker rotates an adjusting threaded rod to drive the electric push rod actuator to ascend and descend; the effect that the regulating valve can be operated automatically or manually is achieved, and the situation that the regulating valve cannot work due to accidental power failure or damage to the electric push rod actuator is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of governing valve, concretely relates to a diaphragm type electric governing valve. BACKGROUND

[0002] The diaphragm type electric governing valve is a kind of governing valve driven by electric actuator, adopts diaphragm structure as the control element of valve, is widely used in various automation control systems, especially in the accurate control occasion of flow, pressure, temperature and other parameters.It is mainly used to control the flow, pressure or temperature of fluid to reach the set process requirement.

[0003] In the announcement No.CN216666511U discloses a kind of diaphragm type electric governing valve, although, the application provided a kind of diaphragm type electric governing valve, it can be convenient to adjust liquid flow, and relative to ordinary electric governing valve, the electric governing valve provided by the application has the advantages that the position of diaphragm can be fixed, the sealing between diaphragm and valve body is guaranteed.

[0004] However, the diaphragm type electric governing valve is not convenient to drive in multiple ways, when power failure or electric actuator is damaged, the governing valve is difficult to use, in addition, it is not convenient to seal the governing valve and external connecting pipeline, and leakage is prone to occur. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of diaphragm type electric governing valve to solve the problems that when power failure or electric actuator is damaged, the governing valve is difficult to use and it is not convenient to seal the governing valve and external connecting pipeline.

[0006] To achieve the above-mentioned purpose, a diaphragm type electric governing valve is provided, comprising a governing valve seat, a valve stem movably arranged inside the governing valve seat, and a valve cover mechanism fixedly arranged on the top of the governing valve seat.

[0007] As a further improvement of the technical solution, the valve cover mechanism includes a lower valve cover fixedly arranged on the top of the governing valve seat, a diaphragm assembly fixedly arranged on both sides of the top surface of the lower valve cover, and an upper valve cover fixedly arranged on the top surface of the lower valve cover, the upper valve cover and the lower valve cover being used to seal the diaphragm assembly.

[0008] As a further improvement of the technical solution, the diaphragm assembly includes a spring fixedly arranged on both sides of the top surface of the lower valve cover, a diaphragm fixedly arranged on the top surface of the spring, and the bottom surface of the diaphragm being fixedly connected with the lower valve cover, the diaphragm assembly being used to move the valve stem.

[0009] As a further improvement of the technical solution, the actuating mechanism comprises an adjusting threaded rod arranged on the top surface of the support frame, and a bottom of the adjusting threaded rod is fixedly provided with an electric push rod actuator, a bottom surface of the electric push rod actuator is rotationally connected with the diaphragm, and the electric push rod actuator is used for pressing the diaphragm.

[0010] As a further improvement of the technical solution, the sealing mechanism comprises a silica gel sealing ring fixedly sleeved on the surface of the connecting threaded pipe, and a rubber sealing ring is fixedly sleeved on the surface of the silica gel sealing ring, and the silica gel sealing ring and the rubber sealing ring are used for sealing the connecting threaded pipe.

[0011] As a further improvement of the technical solution, the bottom surface of the lower valve cover is provided with connecting rods on both sides, the bottom of the connecting rod is fixedly connected with the adjusting valve seat, and the connecting rod is used for supporting the adjusting valve seat.

[0012] As a further improvement of the technical solution, the number of the sealing mechanisms is two groups, and the two groups of sealing mechanisms are arranged in axial symmetry, and the sealing mechanism plays a sealing connection role.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1. In the diaphragm type electric regulating valve, the setting of the actuating mechanism is used for pressing the diaphragm by the electric push rod actuator during use, driving the valve rod to lift, so that the regulating valve adjusts the medium flow, when the electric push rod actuator is unexpectedly powered off or damaged and cannot work, personnel rotate the adjusting threaded rod, drive the electric push rod actuator to lift, reach the effect that the regulating valve can be automatically or manually operated, avoid the situation that the regulating valve cannot work due to unexpected power failure or damage of the electric push rod actuator.

[0015] 2. In the diaphragm type electric regulating valve, the setting of the sealing mechanism is used for connecting the connecting threaded pipe with the external liquid inlet pipe and the liquid outlet pipe, when connecting, the silica gel sealing ring is deformed under pressure, can better fill in the gap of the connection, cooperate with the rubber sealing ring to seal the connecting place of the regulating valve, and leakage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a structure schematic view of the actuating mechanism of the utility model;

[0018] Figure 3 It is a structure schematic view of the sealing mechanism of the utility model;

[0019] Figure 4 It is a structure schematic view of the valve cover mechanism of the utility model.

[0020] The meanings of the various reference numerals in the Figures are as follows:

[0021] 1, regulating valve seat; 2, valve stem; 3, valve cover mechanism; 31, lower valve cover; 32, diaphragm assembly; 33, upper valve cover; 321, spring; 322, diaphragm; 4, support frame; 5, actuator; 51, adjusting threaded rod; 52, electric push rod actuator; 6, connecting threaded pipe; 7, sealing mechanism; 71, silica gel sealing ring; 72, rubber sealing ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] Please refer to Figures 1-4 The present embodiment aims to provide a diaphragm type electric regulating valve, which comprises a regulating valve seat 1, a valve stem 2 movably arranged inside the regulating valve seat 1, and a valve cover mechanism 3 fixedly arranged at the top of the regulating valve seat 1; a support frame 4 is fixedly arranged on the top surface of the valve cover mechanism 3, and an actuator 5 is threadedly arranged at the top of the support frame 4; through the arrangement of the actuator 5, in use, the electric push rod actuator 52 is used to press the diaphragm 322, drive the valve stem 2 to ascend and descend, and regulate the medium flow of the regulating valve; when the electric push rod actuator 52 is unexpectedly powered off or damaged and cannot work, personnel rotate the adjusting threaded rod 51 to drive the electric push rod actuator 52 to ascend and descend, so as to achieve the effect that the regulating valve can be operated automatically or manually, and avoid that the regulating valve cannot work due to unexpected power failure or damage of the electric push rod actuator 52.

[0025] Both ends of the adjusting valve seat 1 are fixedly provided with a connecting threaded pipe 6, and the surface of the connecting threaded pipe 6 is fixedly sleeved with a sealing mechanism 7. The connecting threaded pipe 6 is connected with the external liquid inlet pipe and liquid outlet pipe through the sealing mechanism 7. When connected, the silica gel sealing ring 71 is deformed under pressure and can better fill the gap at the connection, and the rubber sealing ring 72 cooperates to seal the connection of the adjusting valve, avoiding leakage.

[0026] Please refer to Figure 4 The valve cover mechanism 3 comprises a lower valve cover 31 fixedly provided at the top of the adjusting valve seat 1, and a diaphragm assembly 32 is fixedly arranged on both sides of the top surface of the lower valve cover 31. The top surface of the lower valve cover 31 is fixedly provided with an upper valve cover 33.

[0027] The valve cover mechanism 3 is arranged to close the diaphragm assembly 32 and facilitate the lifting of the valve rod 2.

[0028] Please refer to Figure 4 The diaphragm assembly 32 comprises a spring 321 fixedly arranged on both sides of the top surface of the lower valve cover 31, and a diaphragm 322 is fixedly arranged on the top surface of the spring 321. The bottom surface of the diaphragm 322 is fixedly connected with the lower valve cover 31.

[0029] The diaphragm assembly 32 is arranged to facilitate the lifting of the valve rod 2.

[0030] Please refer to Figure 2 The actuator 5 comprises an adjusting threaded rod 51 threadedly arranged on the top surface of the support frame 4, and an electric push rod actuator 52 is fixedly arranged at the bottom of the adjusting threaded rod 51. The bottom surface of the electric push rod actuator 52 is rotatably connected with the diaphragm 322.

[0031] The actuator 5 is arranged to be used for pressing the diaphragm 322 to drive the valve rod 2 to lift and adjust the medium flow of the adjusting valve when in use. When the electric push rod actuator 52 is unexpectedly powered off or damaged and cannot work, personnel can rotate the adjusting threaded rod 51 to drive the electric push rod actuator 52 to lift, so that the adjusting valve can be automatically or manually operated.

[0032] Please refer to Figure 3 The sealing mechanism 7 comprises a silica gel sealing ring 71 fixedly sleeved on the surface of the connecting threaded pipe 6, and a rubber sealing ring 72 is fixedly sleeved on the surface of the silica gel sealing ring 71.

[0033] The sealing mechanism 7 is arranged to deform the silica gel sealing ring 71 under pressure when connected, so that it can better fill the gap at the connection, and the rubber sealing ring 72 cooperates to seal the connection of the adjusting valve.

[0034] Please refer to Figure 4The bottom surface of the lower valve cover 31 is provided with connecting rods on both sides, and the bottom of the connecting rod is fixedly connected with the adjusting valve seat 1.

[0035] The connecting rod supports the adjusting valve seat 1.

[0036] Please refer to Figure 4 The number of the sealing mechanism 7 is two groups, and the two groups of sealing mechanism 7 are symmetrically arranged along the axial direction.

[0037] The sealing mechanism 7 seals the connection between the adjusting valve and the external pipeline.

[0038] Working steps: the connecting threaded pipe 6 is connected with the external liquid inlet pipe and liquid outlet pipe, and in the connection process, the silica gel sealing ring 71 is deformed under pressure, can better fill in the gap of the connection, and cooperate with the rubber sealing ring 72 to better seal the connection of the adjusting valve, so as to avoid leakage;

[0039] In use, the electric push rod actuator 52 is used for extruding the diaphragm 322, driving the valve rod 2 to ascend and descend, so that the adjusting valve adjusts the medium flow;

[0040] When the electric push rod actuator 52 is accidentally powered off or damaged and cannot work, personnel rotate the adjusting threaded rod 51, drive the electric push rod actuator 52 to ascend and descend, and can operate the adjusting valve automatically or manually, so as to avoid that the accidental power-off or damage of the electric push rod actuator 52 causes the adjusting valve to be unable to work.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model, and are not used to limit the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A diaphragm motor-operated control valve characterized by: Including the adjusting valve seat (1), the inside of the adjusting valve seat (1) is movably provided with a valve stem (2), and the top of the adjusting valve seat (1) is fixedly provided with a valve cover mechanism (3); The top surface of the valve cover mechanism (3) is fixedly provided with a support frame (4), and the top of the support frame (4) is threadedly provided with an actuator (5); Both ends of the adjusting valve seat (1) are fixedly provided with a connecting threaded pipe (6), and the surface of the connecting threaded pipe (6) is fixedly sleeved with a sealing mechanism (7).

2. The diaphragm motor-operated regulating valve of claim 1, wherein: The valve cover mechanism (3) comprises a lower valve cover (31) fixedly provided at the top of the adjusting valve seat (1), both sides of the top surface of the lower valve cover (31) are fixedly provided with a diaphragm assembly (32), and the top surface of the lower valve cover (31) is fixedly provided with an upper valve cover (33).

3. The diaphragm motor-operated regulating valve of claim 2, wherein: The diaphragm assembly (32) comprises a spring (321) fixedly provided on both sides of the top surface of the lower valve cover (31), the top surface of the spring (321) is fixedly provided with a diaphragm (322), and the bottom surface of the diaphragm (322) is fixedly connected with the lower valve cover (31).

4. The diaphragm motor-operated regulating valve of claim 1, wherein: The actuator (5) comprises an adjusting threaded rod (51) threadedly provided on the top surface of the support frame (4), the bottom of the adjusting threaded rod (51) is fixedly provided with an electric push rod actuator (52), and the bottom surface of the electric push rod actuator (52) is rotatably connected with the diaphragm (322).

5. The diaphragm motor-operated regulating valve of claim 1, wherein: The sealing mechanism (7) comprises a silica gel sealing ring (71) fixedly sleeved on the surface of the connecting threaded pipe (6), and the surface of the silica gel sealing ring (71) is fixedly sleeved with a rubber sealing ring (72).

6. The diaphragm motorized control valve of claim 2, wherein: Both sides of the bottom surface of the lower valve cover (31) are provided with connecting rods, and the bottom of the connecting rod is fixedly connected with the adjusting valve seat (1).

7. The diaphragm motor-operated regulating valve of claim 1, wherein: The number of the sealing mechanism (7) is two groups, and the two groups of sealing mechanisms (7) are arranged in axial symmetry.

Images