CN213900000U

CN213900000U - Check valve with heat preservation function

Info

Publication number: CN213900000U
Application number: CN202022754661.7U
Authority: CN
Inventors: 陈锡红; 刘冰梅; 唐仁林; 王忠炎
Original assignee: Zhejiang Shenrui Fluid Control Co ltd
Current assignee: Zhejiang Changgu Metal Manufacturing Co.,Ltd.
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-06
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to a check valve with heat preservation function, the valve body that has import and export respectively including both ends, the inside upside of valve body is equipped with the overhead gage, the inside downside of valve body is equipped with down the baffle, overhead gage lower extreme and lower baffle upper end are located same horizontal plane and form the disk seat, there is the valve gap at the valve body top through bolt fixed mounting, the inside valve clack subassembly that is equipped with of valve body, the valve clack subassembly is including the fixed fixing base that sets up at the valve gap lower surface, the inside lift chamber that sets up of fixing base, it is provided with the screw to link up to being provided with in the lift chamber from top to bottom in the valve gap, the control tube that the surface has the external screw thread is inserted in the lift chamber, it is provided with the slide to go up and down to slide in the control tube, the annular limiting plate that the slide set up by the control tube lower extreme is spacing, the valve rod is connected to the slide lower surface, the valve rod lower extreme runs through the fixing base bottom and extends to the disk seat department and is connected with the valve clack, the utility model provides a check valve rod convenient to emergency open and keep warm effectual difficult freezing that has the heat preservation function that has not easy A check valve.

Description

Check valve with heat preservation function

Technical Field

The utility model relates to a check valve with heat preservation function.

Background

The check valve is a valve which automatically opens and closes a valve flap by means of medium flowing, and is used for preventing medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve, the check valve belongs to an automatic valve and mainly has the main functions of preventing medium from flowing backwards, preventing a pump and a driving motor from reversing and discharging container medium, the check valve can also be used for providing a pipeline for supplying auxiliary systems with pressure possibly rising to exceed system pressure, the check valve can be mainly divided into a rotary opening check valve and a lifting check valve, the existing lifting check valve can not be used for emergency situations, for example, only can play a one-way check function in the use process, the existing lifting check valve can not realize when the function of the check valve is not needed, the function is single, the use requirement can not be well met, and the phenomenon of freezing and blocking can easily occur in the interior of the lifting check valve when the lifting check valve is applied to a pipeline in a low-temperature environment, it is not easy to switch for use, and thus improvement is required.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a check valve with heat preservation function convenient to handle emergency and open and keep warm effectual difficult freezing jamming of difficult freezing.

The technical scheme of the utility model is realized like this: the utility model provides a check valve with heat preservation function, has import and export and inside hollow valve body respectively including both ends, the inside upside of valve body is equipped with the overhead gage, the inside downside of valve body is equipped with down the baffle, the lower extreme that the valve body inner wall was kept away from to the overhead gage and the upper end that the valve body inner wall was kept away from to lower baffle are located same horizontal plane and form the disk seat, there is the valve gap at the valve body top through bolt fixed mounting, the inside valve clack subassembly that is provided with of valve body, its characterized in that: the valve clack subassembly is including fixed fixing base that sets up at the valve gap lower surface, the inside lift chamber that sets up of fixing base, it is provided with the screw to link up to the lift chamber from top to bottom on the valve gap, go up and down in the lift chamber and insert and be equipped with the control tube that the surface has the external screw thread, the rotatory screw of wearing out in control tube upper end is connected with the control head, it is provided with the slide to go up and down to slide in the control tube, the slide is spacing by the annular limiting plate that the control tube lower extreme set up, slide lower surface connection valve rod, the valve rod lower extreme runs through the fixing base bottom and extends to disk seat department and is connected with the valve clack, the valve clack includes that central point puts the fixed longitudinal section of department and valve rod lower extreme is curved valve clack lid and valve clack core, the fixing base bottom is connected with valve clack lid top through the spring, it is provided with the heat preservation chamber to surround disk seat and case department in the valve body, be connected with the circulation accuse temperature that is used for controlling heat preservation chamber inside heat conduction oil temperature to heat the valve body and heat preservation And (6) assembling.

By adopting the technical scheme, a medium enters the valve body from an inlet, the medium upwards jacks up the valve clack core to enable the valve clack cover and the valve rod to ascend and compress the spring, the sliding plate connected with the upper end of the valve rod upwards slides in the control pipe to open the valve clack to enable the medium to be normally conveyed in one direction, after the pressure at the medium inlet is reduced, the valve clack cover and the valve rod descend under the restoring action of the spring, and the medium flows back to the valve clack, the valve clack comprises the valve clack cover with the central position and the longitudinal section fixed at the lower end of the valve rod being arc-shaped, the restoring action force of the pressure fit spring is generated, the outer wall of the valve clack core is sleeved on the valve seat, the sealing fit between the valve clack and the valve seat is ensured, the medium can be effectively prevented from flowing back with strong sealing performance, when the non-return function appears or is not needed in emergency, the valve cover is vertically penetrated into the lifting cavity, the control pipe with external threads on the outer surface is inserted in the lifting cavity in a lifting way, the upper end of the control tube is connected with a control head through a screw hole in a rotating way, the control head is operated in a rotating way to drive the control tube to ascend, a sliding plate is arranged in the control tube in a sliding way and ascends and descends, the sliding plate is limited by an annular limiting plate arranged at the lower end of the control tube, thereby, the control pipe ascends to drive the sliding plate and the valve rod to ascend together, the valve clack is opened, the spring is in a compressed state at the moment, the inlet is communicated with the outlet, the non-return function is stopped, the emergency function is realized, the heat preservation cavity is arranged in the valve body around the valve seat and the valve core, when in use, the temperature of heat conducting oil arranged in the heat preservation cavity is controlled by the circulating temperature control assembly connected with the heat preservation cavity, and then heat the heat preservation around disk seat and case department to the valve body is inside to prevent that the valve body is inside to take place to freeze or the normal use of valve is influenced to the jamming phenomenon appears because of the low temperature state under, the utility model provides a be convenient for deal with emergency and open and keep warm effectual be difficult for freezing the check valve with heat preservation function of jamming.

The utility model discloses further set up to: the circulation accuse temperature subassembly includes the heat preservation heat insulating box and sets up the operation pump in the heat preservation heat insulating box outside, operation pump suction end passes through the straw and is connected bottom the heat preservation chamber, operation pump output end and heat preservation heat insulating box internal connection, the heat preservation heat insulating box passes through the back flow and is connected with heat preservation chamber top, the inside heating pipe that is provided with of heat preservation heat insulating box, heat preservation heat insulating box bottom is provided with the connecting box, inside positive temperature coefficient thermistor that is connected with the heating pipe electricity that is provided with of connecting box, the power supply who is used for supplying power positive temperature coefficient thermistor and the electric control switch who establishes ties in the circuit between power supply and positive temperature coefficient thermistor, the inside temperature sensor who is used for responding to the real-time oil temperature of conduction oil that is provided with of heat preservation heat insulating box, temperature sensor electricity connects electric control switch and controls electric control switch break-make-break-and-break-make-break.

By adopting the technical scheme, when in use, the pump is operated, the heat conduction oil at the bottom of the heat preservation cavity is extracted through the suction pipe and is sent into the heat preservation and insulation box, when the temperature of the heat conduction oil in the heat preservation and insulation box is lower than the set lower limit value, the temperature sensor transmits an electric signal to the electric control switch, the electric control switch controls the circuit, then the power supply supplies power to the positive temperature coefficient thermistor, the positive temperature coefficient thermistor works and carries out heat preservation and heating on the heat conduction oil in the heat preservation and insulation box through the heating pipe, because the positive temperature coefficient thermistor has the function of self-limiting temperature, the situation that the heat conduction oil is decomposed or deteriorated due to local overheating does not exist, the temperature is detected in real time through the temperature sensor and is heated and insulated when the temperature is lower than the lower limit temperature, the heat conduction oil after being heated and insulated is sent to the top, so as to prevent the valve body from freezing or clamping stagnation after the temperature is reduced to the lower limit temperature.

The utility model discloses further set up to: the control head is cylindric and is provided with a plurality of vertical anti-skidding grooves along circumference on the lateral wall.

Through adopting above-mentioned technical scheme, for the rotatory operation control head of further being convenient for, be cylindricly and be provided with a plurality of vertical anti-skidding grooves along circumference on the lateral wall with the control head setting.

The utility model discloses further set up to: an annular sealing groove is formed in the fixing seat and located below the lifting cavity and surrounds the valve rod, and an annular sealing gasket is arranged in the sealing groove.

Through adopting above-mentioned technical scheme, just be located lift chamber below on the fixing base and seted up annular seal groove around the valve rod, be provided with annular sealed pad in the seal groove for further strengthen avoiding the inside leakproofness of valve body, prevent that the medium from entering into the lift chamber between valve rod and the fixing base, be used for reinforcing relative leakproofness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

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 efforts belong to the protection scope of the present invention.

As shown in figure 1, the utility model discloses a check valve with heat preservation function, which comprises a hollow valve body 1 with an inlet and an outlet at two ends, an upper baffle 2 is arranged at the upper side inside the valve body 1, a lower baffle 3 is arranged at the lower side inside the valve body 1, the lower end of the upper baffle 2, which is far away from the inner wall of the valve body 1, and the upper end of the lower baffle 3, which is far away from the inner wall of the valve body 1, are positioned at the same horizontal plane to form a valve seat, a valve cover 4 is fixedly arranged at the top of the valve body 1 through bolts, a valve clack assembly is arranged inside the valve body 1, in the embodiment of the utility model, the valve clack assembly comprises a fixed seat 5 fixedly arranged at the lower surface of the valve cover 4, a lifting cavity 6 is arranged inside the fixed seat 5, a screw hole 7 is arranged in the lifting cavity 6 from top to bottom, a control pipe 8 with external threads on the outer surface is inserted in the lifting cavity 6 in a lifting way, the utility model discloses a valve body, including control tube 8, screw 7, valve rod 12, valve body 1, heat preservation chamber 100, be connected with the circulation accuse temperature subassembly that is used for controlling the heat preservation chamber 100 inside built-in conduction oil temperature of heat preservation chamber 100 and heats heat preservation to valve body 1, the rotatory screw hole 7 that wears out in control tube 8 upper end is connected with control head 9, it is provided with slide 10 to go up and down to slide in the control tube 8, slide 10 is spacing by the annular limiting plate 11 that the 8 lower extremes of control tube set up, valve rod 12 is connected to slide 10 lower surface, the valve rod 12 lower extreme runs through 5 bottoms of fixing base and extends to disk seat department and is connected with the valve clack, the valve clack includes that central point puts the fixed longitudinal section of department and valve rod 12 lower extreme and is curved valve.

By adopting the technical scheme, a medium enters the valve body 1 from an inlet, the medium upwards jacks up the valve clack core 14 to enable the valve clack cover 13 and the valve rod 12 to ascend and compress the spring 15, the sliding plate 10 connected with the upper end of the valve rod 12 upwards slides in the control pipe 8, the medium is normally conveyed in a single direction by opening the valve clack, after the pressure at the medium inlet is reduced, the valve clack cover 13 and the valve rod 12 descend under the restoring action of the spring 15, the medium flows back to the valve clack, the valve clack comprises the valve clack cover 13 with the central position fixed with the lower end of the valve rod 12 and the longitudinal section of which is arc-shaped, the restoring acting force of the pressure fit spring 15 is generated, the outer wall of the valve clack core 14 is sleeved on the valve seat, the sealing fit between the valve clack and the valve seat is ensured, the sealing performance can effectively prevent the medium from flowing back, when the non-return function appears or does not need to occur in an emergency situation, the screw hole 7 is arranged in the valve cover 4 which penetrates up and down to the lifting cavity 6, a control tube 8 with external threads on the outer surface is inserted in the lifting cavity 6 in a lifting way, the upper end of the control tube 8 is rotatably penetrated out of a screw hole 7 to be connected with a control head 9, the control head 9 is rotated to operate the control head 9 to drive the control tube 8 to lift upwards, a sliding plate 10 is arranged in the control tube 8 in a lifting and sliding way, the sliding plate 10 is limited by an annular limiting plate 11 arranged at the lower end of the control tube 8, so that the sliding plate 10 and a valve rod 12 are driven to lift together along with the lifting of the control tube 8 to open a valve clack, a spring 15 is in a compressed state at the moment, an inlet is communicated with an outlet, the non-return function is stopped, the emergency function is realized, a heat preservation cavity 100 is arranged around a valve seat and a valve core in the valve body 1, when the valve is used, a circulating temperature control component connected on the heat preservation cavity 100 controls the temperature of heat conduction oil in the heat preservation cavity 100, and further heats and preserves the heat of the valve seat and the valve core in the valve body 1 so as to prevent the normal use of the valve caused by freezing or clamping stagnation phenomenon in a low temperature state, the utility model provides a check valve with heat preservation function convenient to handle emergency and open and keep warm effectual difficult freezing jamming of being difficult for.

In the embodiment of the present invention, the circulation temperature control assembly includes a thermal insulation box 101 and an operation pump 102 disposed outside the thermal insulation box 101, a suction end of the operation pump 102 is connected to the bottom of the thermal insulation cavity 100 through a suction pipe 103, an output end of the operation pump 102 is connected to the interior of the thermal insulation box 101, the thermal insulation box 101 is connected to the top of the thermal insulation cavity 100 through a return pipe 104, a heating pipe 105 is disposed inside the thermal insulation box 101, a connection box 106 is disposed at the bottom of the thermal insulation box 101, a positive temperature coefficient thermistor 107 electrically connected to the heating pipe 105, a power supply 108 for supplying power to the positive temperature coefficient thermistor 107, and an electronic control switch 109 serially connected in a circuit between the power supply 108 and the positive temperature coefficient thermistor 107 are disposed inside the thermal insulation box 101, a temperature sensor 110 for sensing the real-time oil temperature of the thermal conduction oil is disposed inside the thermal insulation box 101, the temperature sensor 110 is electrically connected with the electronic control switch 109 and controls the on-off of the electronic control switch 109.

By adopting the technical scheme, when in use, the pump 102 is operated, the heat conduction oil at the bottom of the heat preservation cavity 100 is extracted through the suction pipe 103 and is sent into the heat preservation and insulation box 101, when the temperature of the heat conduction oil in the heat preservation and insulation box 101 is lower than a set lower limit value, the temperature sensor 110 transmits an electric signal to the electric control switch 109, the electric control switch 109 controls a passage, then the power supply 108 supplies power to the positive temperature coefficient thermistor 107, the positive temperature coefficient thermistor 107 works and carries out heat preservation and heating on the heat conduction oil in the heat preservation and insulation box 101 through the heating pipe 105, because the positive temperature coefficient thermistor 107 has a self-temperature limiting function, the condition that the heat conduction oil is decomposed or deteriorated due to local overheating does not exist, the temperature is detected in real time through the temperature sensor 110 and is heated and insulated when the temperature is lower than the lower limit temperature, the heat conduction oil after being, therefore, the heat conducting oil in the heat preservation cavity 100 is subjected to circulating heat preservation and heating, so that the phenomenon that the valve body 1 is frozen or clamped after the temperature is reduced to the lower limit temperature is prevented.

In the embodiment of the present invention, the control head 9 is cylindrical and has a plurality of vertical anti-slip grooves 16 along the circumferential direction on the outer side wall.

Through adopting above-mentioned technical scheme, for the rotatory operation control head 9 of further being convenient for, be provided with a plurality of vertical antiskid groove 16 along circumference on being cylindric and the lateral wall with control head 9 setting.

In the embodiment of the present invention, an annular sealing groove 17 is disposed on the fixing base 5 and below the lifting cavity 6 around the valve rod 12, and an annular sealing gasket 18 is disposed in the sealing groove 17.

Through adopting above-mentioned technical scheme, on fixing base 5 and be located lift chamber 6 below and seted up annular seal groove 17 around valve rod 12, be provided with annular sealed 18 in the seal groove 17 for further strengthen avoiding the inside leakproofness of valve body 1, prevent that the medium from entering into lift chamber 6 between valve rod 12 and the fixing base 5, be used for reinforcing relative leakproofness.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a check valve with heat preservation function, has import and export and inside hollow valve body (1) respectively including both ends, the inside upside of valve body (1) is equipped with overhead gage (2), the inside downside of valve body (1) is equipped with down baffle (3), the lower extreme of keeping away from valve body (1) inner wall and the upper end that keeps away from valve body (1) inner wall down of overhead gage (2) are located same horizontal plane and form the disk seat, bolt fixed mounting has valve gap (4) at valve body (1) top, the inside valve clack subassembly that is provided with of valve body (1), its characterized in that: the valve clack component comprises a fixed seat (5) fixedly arranged on the lower surface of a valve cover (4), a lifting cavity (6) is arranged inside the fixed seat (5), the valve cover (4) is provided with a screw hole (7) in the lifting cavity (6) in an up-down through mode, a control pipe (8) with an external thread on the outer surface is inserted in the lifting cavity (6) in a lifting mode, the upper end of the control pipe (8) penetrates through the screw hole (7) in a rotating mode and is connected with a control head (9), a sliding plate (10) is arranged in the control pipe (8) in a lifting sliding mode, the sliding plate (10) is limited by an annular limiting plate (11) arranged at the lower end of the control pipe (8), a valve rod (12) is connected to the lower surface of the sliding plate (10), the lower end of the valve rod (12) penetrates through the bottom of the fixed seat (5) and extends to a valve seat and is connected with a valve clack, and the valve clack comprises a valve clack cover (13) and a valve clack core (14) with the lower end of which is fixed at the central position and has an arc-shaped longitudinal section, the bottom of the fixing seat (5) is connected with the top of the valve clack cover (13) through a spring (15), a heat preservation cavity (100) is arranged in the valve body (1) around the valve seat and the valve core, and a circulating temperature control assembly used for controlling the temperature of heat conduction oil arranged in the heat preservation cavity (100) to heat and preserve the temperature of the valve body (1) is connected to the heat preservation cavity (100).

2. The check valve with heat preservation function as claimed in claim 1, wherein: the circulating temperature control assembly comprises a heat preservation and heat insulation box (101) and an operation pump (102) arranged outside the heat preservation and heat insulation box (101), the suction end of the operation pump (102) is connected with the bottom of a heat preservation cavity (100) through a suction pipe (103), the output end of the operation pump (102) is connected with the inside of the heat preservation and heat insulation box (101), the heat preservation and heat insulation box (101) is connected with the top of the heat preservation cavity (100) through a return pipe (104), a heating pipe (105) is arranged inside the heat preservation and heat insulation box (101), a connecting box (106) is arranged at the bottom of the heat preservation and heat insulation box (101), a positive temperature coefficient thermistor (107) electrically connected with the heating pipe (105), a power supply (108) for supplying power to the positive temperature coefficient thermistor (107) and an electric control switch (109) connected in series in a circuit between the power supply (108) and the positive temperature coefficient thermistor (107) are arranged inside the connecting box (106), the temperature sensor (110) used for sensing the real-time oil temperature of the heat conduction oil is arranged in the heat insulation box (101), and the temperature sensor (110) is electrically connected with the electric control switch (109) and controls the on-off of the electric control switch (109).

3. The check valve with a heat retaining function according to claim 1 or 2, wherein: the control head (9) is cylindrical, and a plurality of vertical anti-skidding grooves (16) are formed in the outer side wall along the circumferential direction.

4. The check valve with heat preservation function as claimed in claim 1, wherein: an annular sealing groove (17) is formed in the fixing seat (5) and located below the lifting cavity (6) and surrounds the valve rod (12), and an annular sealing gasket (18) is arranged in the sealing groove (17).