CN112212068A

CN112212068A - Valve with anti-freezing function

Info

Publication number: CN112212068A
Application number: CN202011199279.2A
Authority: CN
Inventors: 舒瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-01
Filing date: 2020-11-01
Publication date: 2021-01-12

Abstract

The invention discloses a valve with an anti-freezing function, and relates to the technical field of valve devices; in order to improve the effect of automatically controlling heating; the valve body on the conveyer pipe is specifically installed including installing, the embedded heating wire subassembly that installs of outer wall of valve body, the heating wire subassembly is including installing in the first heating wire on valve body surface and installing the second heating wire of valve rod pivoted position department in the valve body, install the control mechanism of the work of the first heating wire of control and second heating wire on the conveyer pipe, conveyer pipe circumference outer wall integral type is provided with two spacing rings. The structure of the air bag, the conductive strips and the like is arranged, so that the capability of the air bag for expanding with heat and contracting with cold can be utilized, the first heating wire and the second heating wire work to heat the valve body, and the expansion and contraction processes of the air bag are slow, so that the phenomenon that the conductive strips and the conductive strips are contacted and separated repeatedly is avoided, and the working stability of the first heating wire and the second heating wire is ensured.

Description

Valve with anti-freezing function

Technical Field

The invention relates to the technical field of valve devices, in particular to a valve with an anti-freezing function.

Background

Valves are mechanical devices that control the flow, direction, etc. of a flowing fluid medium, valves are essential components in piping systems; in the pipeline conveying process, the conveying work is controlled through a valve according to actual requirements; due to the influence of the external environment, when the temperature is in an environment with too low temperature, the valve is possibly frozen, so that the control of a user on the valve is influenced; at present, the antifreezing valve designed aiming at the problem mostly adopts a heating mode for antifreezing, and a certain antifreezing effect is achieved, but the work of the heating mechanism cannot be automatically controlled according to the temperature, the continuous heating results in higher energy consumption, and the intermittent heating antifreezing effect cannot be guaranteed.

Through retrieval, the patent with the Chinese patent application number of CN202020038968.4 discloses an anti-freezing valve convenient to install, which comprises a valve body and an anti-freezing box, wherein a valve rod and a rotary disc are arranged on the upper side of the valve body, a valve clack is arranged in the valve body, the valve clack is fixedly connected with the valve rod, and the rotary disc is arranged at the top of the valve rod; the two ends of the valve body are connected with connectors, and the anti-freezing box is arranged on the side surface of the valve body; the connector is internally provided with internal threads, and the inner cavity of the anti-freezing box is communicated with the inner cavity of the valve body; the side surface of the anti-freezing box is provided with an installation groove, a heating plate is fixed in the installation groove, and the heating plate is connected with the installation groove through a screw; the heating plate inboard is provided with the electric heating piece, the electric heating piece sets up in the case inner chamber that prevents frostbite, the electric heating piece is connected with the controller. The anti-freezing valve in the patent has the following defects: although possessing certain temperature monitoring function, adopt temperature sensor difficult maintenance, and when the temperature was located the critical value that the sensor set for, probably appear the phenomenon that the electric heating piece repeated work and stopped, influence life.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a valve with an anti-freezing function.

In order to achieve the purpose, the invention adopts the following technical scheme:

a valve with an anti-freezing function comprises a valve body arranged on a conveying pipe, wherein a heating wire assembly is embedded in the outer wall of the valve body and comprises a first heating wire arranged on the surface of the valve body and a second heating wire arranged at the rotating position of a valve rod in the valve body, a control mechanism for controlling the first heating wire and the second heating wire to work is arranged on the conveying pipe, two limiting rings are integrally arranged on the outer wall of the circumference of the conveying pipe, an air bag is sleeved on the outer side of the conveying pipe and is positioned between the two limiting rings, the control mechanism comprises a spring piece support, a support plate and a mounting frame, the outer wall of one side of the spring piece support and the outer wall of one side of the support plate are both arranged on the outer wall of the top of the conveying pipe through the mounting frame, the positions of the two conducting strips are matched with the conducting strips, and the conducting strips are connected with the control circuits of the first heating wire and the second heating wire; the outer wall of the top of the air bag is connected to the outer wall of the bottom of one end of the elastic sheet support through two symmetrical connecting columns.

Preferably: the elastic sheet support is of an arc-shaped structure with the middle part bent downwards.

Further: conveyer pipe circumference outer wall rotates and is connected with driven gear, driven gear installs the regulation pole that even circumference distributes on one side inner wall, adjust pole one end through equal screw fixation elastic rod, elastic rod one end bonds and has hit the ball, hit the ball and be the elastic rubber material, hit the position and the valve body adaptation of hitting the ball, driven gear one side is provided with drive driven gear pivoted actuating mechanism.

Further preferred is: the adjusting rod is connected to the inner wall of the driven gear through threads, and a twisting plate is fixed to one end, far away from the elastic rod, of the adjusting rod through a screw.

As a preferable aspect of the present invention: the hitting ball is of a hollow structure, and through holes which are uniformly distributed are formed in the outer wall of the hitting ball.

Further preferred as the invention: the adjusting rods are all provided with first friction plates, and the circumferential outer walls of the conveying pipes are all provided with second friction plates for transferring heat to the conveying pipes; the first friction plate is matched with the second friction plate in position.

As a still further scheme of the invention: the outer wall of one side of the adjusting rod is welded with the mounting seat, the first friction plate is connected to the inner wall of the mounting seat through the sliding rod in a sliding mode, the outer wall of one side of the first friction plate and the outer wall of one side of the adjusting rod are welded with the same spring, the distance from the first friction plate to the conveying pipe is smaller than the thickness of the second friction plate, and the cambered surface used for guiding the first friction plate to be in contact with the second friction plate is arranged on one side of.

On the basis of the scheme: the inner circumferential wall of the driven gear and the outer circumferential wall of the conveying pipe are connected with rolling balls which are evenly and circumferentially distributed in a sliding mode.

On the basis of the foregoing scheme, it is preferable that: the driving mechanism comprises a handle, a connecting shaft and a driving gear, the connecting shaft is arranged on the outer wall of one side of the conveying pipe through a rotating shaft frame, the driving gear and the handle are fixed at the two ends of the connecting shaft through screws respectively, and the driving gear is meshed with the driven gear.

It is further preferable on the basis of the foregoing scheme that: the driving mechanism comprises a motor, a connecting shaft and a driving gear, the connecting shaft is arranged on the outer wall of one side of the conveying pipe through a rotating shaft frame, the driving gear is fixed on the outer wall of one end of the connecting shaft through a screw, and the driving gear is meshed with the driven gear; the motor is fixed on the outer wall of one side of the rotating shaft frame through screws, the output end of the motor is rotatably connected to the outer wall of one end of the connecting shaft through a coupler, and the two conducting strips are connected into a control circuit of the motor.

The invention has the beneficial effects that:

1. according to the invention, by arranging the structure of the air bag, the conductive strips and the like, the expansion and contraction capabilities of the air bag can be utilized, when the external temperature is reduced, the volume of the air bag is contracted, the elastic sheet support is pulled downwards through the connecting column, so that the conductive strips are close to the conductive strips, when the temperature is low to a certain degree, the conductive strips are contacted with the circuits of the two conductive strips along with the continuous contraction of the air bag, so that the first heating wire and the second heating wire work to heat the valve body, and the expansion and contraction processes of the air bag are slow, so that the phenomenon that the conductive strips and the conductive strips are contacted and separated repeatedly is avoided, the working stability of the first heating wire and the second heating wire is ensured.

2. Be middle part downwarping arc structure through setting up the shell fragment support, can buckle to the certain degree at the shell fragment support after, make the arcwall face reverse sunken, thereby make the current shape of maintaining that the shell fragment support can the certain degree, when the gasbag because of valve body and conveyer pipe intensification expand, need bigger effort could with shell fragment support jack-up, make the conducting strip break away from the conducting strip, first heating wire and second heating wire have further been avoided by frequent switch-on to this design, the effect of preventing frostbite has been promoted.

3. Through the arrangement of the elastic rod, the hitting ball and other structures, the hitting ball can be driven to hit the surface of the valve body by rotating the driven gear, so that the valve body is not easy to freeze; through setting up the twisting plate isotructure, be convenient for adjust the length that the pole stretches out in driven gear one side to reach the regulation and hit the effect of hitting the batting position, make the user can change according to the demand and hit the batting position of hitting of batting, promoted the practicality.

4. Through setting up hollow structure and for hitting of elastic rubber material ball of beating, can be when hitting the ball contact and hit the valve body, through the deformation of hitting the ball, will hit the gas extrusion and impact the valve body of beating in the ball to make the gas flow velocity on valve body surface accelerate, the effect of preventing frostbite of having played of certain degree, and the thru hole has ensured the deformation volume of hitting the ball, avoid the effort too big and damage the valve body when hitting.

5. By arranging the first friction plate and the second friction plate, the first friction plate can be contacted with and rubbed with the second friction plate while the adjusting rod rotates, so that the second friction plate transmits the generated heat to the surface of the conveying pipe, and the heating purpose is realized; through setting up spring isotructure, can be when first friction disc contacts the second friction disc, based on the effort of spring deformation, promote the frictional force between first friction disc and the second friction disc to heat production effect has been promoted.

Drawings

Fig. 1 is a schematic structural diagram of an overall valve with an anti-freezing function according to the present invention;

FIG. 2 is a schematic structural diagram of a first friction plate and a second friction plate of a valve with an anti-freezing function according to the present invention;

fig. 3 is a schematic structural view of a cut-away view of a driven gear of a valve with an anti-freezing function according to the present invention;

FIG. 4 is a schematic structural diagram of a valve control mechanism with an anti-freezing function according to the present invention;

fig. 5 is a schematic structural diagram of the whole valve with an anti-freezing function according to embodiment 2 of the present invention.

In the figure: 1 valve body, 2 batting balls, 3 elastic rods, 4 driving gears, 5 connecting shafts, 6 handles, 7 rotating shaft frames, 8 conveying pipes, 9 screwing plates, 10 driven gears, 11 adjusting rods, 12 first heating wires, 13 second heating wires, 14 elastic sheet supports, 15 supporting plates, 16 mounting frames, 17 air bags, 18 limiting rings, 19 springs, 20 first friction plates, 21 second friction plates, 22 rolling balls, 23 mounting seats, 24 through holes, 25 lower supports, 26 conducting sheets, 27 connecting columns, 28 conducting strips, 29 upper supports and 30 motors.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

a valve with an anti-freezing function is disclosed, as shown in figures 1-4, and comprises a valve body 1 installed on a conveying pipe 8, wherein an electric heating wire assembly is installed on the outer wall of the valve body 1 in an embedded manner, the electric heating wire assembly comprises a first electric heating wire 12 installed on the surface of the valve body 1 and a second electric heating wire 13 installed at the rotating position of a valve rod in the valve body 1, a control mechanism for controlling the first electric heating wire 12 and the second electric heating wire 13 to work is installed on the conveying pipe 8, two limiting rings 18 are integrally arranged on the outer wall of the circumference of the conveying pipe 8, an air bag 17 is sleeved on the outer side of the conveying pipe 8 and located between the two limiting rings 18, the control mechanism comprises an elastic sheet support 14, a support plate 15 and a mounting frame 16, the outer walls of one side of the elastic sheet support 14 and one side of the support plate 15 are, two conducting strips 26 are mounted on the outer wall of the top of the supporting plate 15 through a lower bracket 25, the positions of the two conducting strips 26 are matched with the conducting strips 28, and the conducting strips 26 are connected to the control circuit of the first heating wire 12 and the second heating wire 13; the outer wall of the top of the air bag 17 is connected with the outer wall of the bottom of one end of the spring support 14 through two symmetrical connecting columns 27; through setting up gasbag 17, conducting strip 28 and conducting strip 26 isotructure, can utilize gasbag 17 expend with heat and contract with cold's ability, when ambient temperature descends, gasbag 17 volume shrink, pull shell fragment support 14 downwards through spliced pole 27, and then make conducting strip 28 be close to conducting strip 26, when the temperature is low to a certain extent, along with gasbag 17's lasting shrink, conducting strip 28 contact switches on two conducting strip 26's circuit, and then make first heating wire 12 and second heating wire 13 work heat valve body 1, and because gasbag 17's inflation and shrink process are comparatively slow, therefore, conducting strip 28 and conducting strip 26 repeated contact have been avoided, the phenomenon of separation, the stability of first heating wire 12 and second heating wire 13 work has been ensured, the service life thereof is prolonged.

To further avoid the first heating wire 12 and the second heating wire 13 from being frequently conducted; as shown in fig. 4, the spring plate support 14 is an arc structure with a downward bent middle part, the arc structure with the downward bent middle part is formed by arranging the spring plate support 14, the spring plate support 14 can be bent to a certain degree, so that the arc surface is reversely sunken, the spring plate support 14 can maintain the current shape to a certain degree, when the air bag 17 expands due to the temperature rise of the valve body 1 and the conveying pipe 8, the spring plate support 14 can be jacked up by a larger acting force, the conductive strip 28 is separated from the conductive strip 26, the design further avoids the first heating wire 12 and the second heating wire 13 from being frequently switched on, and the anti-freezing effect is improved.

In order to improve the anti-freezing effect; as shown in fig. 1 and 2, the circumferential outer wall of the conveying pipe 8 is rotatably connected with a driven gear 10, the inner wall of one side of the driven gear 10 is provided with adjusting rods 11 which are uniformly and circumferentially distributed, one end of each adjusting rod 11 is fixed with an elastic rod 3 through an equal screw, one end of each elastic rod 3 is bonded with a hitting ball 2, the hitting ball 2 is made of elastic rubber, the position of the hitting ball 2 is matched with the valve body 1, and one side of the driven gear 10 is provided with a driving mechanism for driving the driven gear 10 to rotate; through setting up elastic rod 3, hitting ball 2 isotructure, can drive through rotating driven gear 10 and hit ball 2 and hit the valve body surface and hit to make valve body 1 be difficult for being frozen.

To facilitate adjustment of the ball 2 position; as shown in fig. 2, the adjusting rods 11 are all connected to the inner wall of the driven gear 10 through threads, and one end of each adjusting rod 11, which is far away from the elastic rod 3, is fixed with a screwing plate 9 through a screw; through setting up wrong board 9 isotructures, be convenient for adjust the length that pole 11 stretches out in driven gear 10 one side to reach the effect of adjusting the batting 2 positions, make the user can change the batting position of batting 2 according to the demand, promoted the practicality.

In order to further improve the anti-freezing effect; as shown in fig. 3, the hitting ball 2 is a hollow structure, and through holes 24 are uniformly distributed on the outer wall of the hitting ball 2; through setting up hollow structure and for hitting of elastic rubber material ball 2 of hitting, can hit ball 2 contact and hit when hitting valve body 1, through the deformation of hitting ball 2, will hit the gas of hitting in the ball 2 and extrude and strike valve body 1 to make the gas flow rate on valve body 1 surface accelerate, certain play frost-proof effect, and thru hole 24 has ensured the deformation volume of hitting ball 2, avoid the effort too big and damage valve body 1 when hitting.

To facilitate heating of the duct 8; as shown in fig. 3, the adjusting rods 11 are all provided with first friction plates 20, and the circumferential outer walls of the conveying pipes 8 are all provided with second friction plates 21 for transferring heat to the conveying pipes 8; the first friction plate 20 is matched with the second friction plate 21 in position; by arranging the first friction plate 20 and the second friction plate 21, the first friction plate 20 can be contacted with the second friction plate 21 to rub while the adjusting rod 11 rotates, so that the second friction plate 21 transmits the generated heat to the surface of the conveying pipe 8, and the heating purpose is realized.

In order to improve the heat production effect; as shown in fig. 3, a mounting seat 23 is welded on the outer wall of one side of the adjusting rod 11, the first friction plate 20 is slidably connected to the inner wall of the mounting seat 23 through a sliding rod, the same spring 19 is welded on the outer wall of one side of the first friction plate 20 and the outer wall of one side of the adjusting rod 11, the distance from the first friction plate 20 to the conveying pipe 8 is smaller than the thickness of the second friction plate 21, and an arc surface for guiding the first friction plate 20 to contact with the second friction plate 21 is arranged on one side of the second friction plate 21; through setting up spring 19 isotructure, can be when first friction disc 20 contacts second friction disc 21, based on the effort of spring 19 deformation, promote the frictional force between first friction disc 20 and the second friction disc 21 to heat production effect has been promoted.

In order to improve the sliding fluency; as shown in fig. 3, the inner circumferential wall of the driven gear 10 and the outer circumferential wall of the conveying pipe 8 are connected with rolling balls 22 which are evenly distributed circumferentially in a sliding way; through setting up spin 22, both ensured driven gear 10 and rotated the fluency in conveyer pipe 8 outer wall, avoided appearing driven gear 10 again and frozen the phenomenon on conveyer pipe 8, promoted the reliability.

Actuating mechanism includes handle 6, connecting axle 5 and drive gear 4, connecting axle 5 passes through pivot frame 7 to be installed in 8 one side outer walls of conveyer pipe, and drive gear 4 and handle 6 pass through the both ends of screw fixation in connecting axle 5 respectively, and drive gear 4 meshes with driven gear 10 mutually.

In the present embodiment, since the air bag 17 is exposed to the outside, the expansion and contraction capabilities of the air bag 17 can be utilized, when the outside temperature is reduced, the volume of the air bag 17 is reduced, the elastic sheet support 14 is pulled downwards through the connection column 27, and the conductive strips 28 are close to the conductive strips 26, when the temperature is reduced to a certain degree, along with the continuous contraction of the air bag 17, the conductive strips 28 contact and conduct the circuits of the two conductive strips 26, and further the first heating wire 12 and the second heating wire 13 work to heat the valve body 1, and because the expansion and contraction processes of the air bag 17 are slow, the phenomenon that the conductive strips 28 and the conductive strips 26 repeatedly contact and separate is avoided, the stability of the first heating wire 12 and the second heating wire 13 is ensured, the service life of the air bag is prolonged, in addition, by setting the elastic sheet support 14 to be an arc structure with the middle part bent downwards, after the elastic sheet support, the arc-shaped surface is reversely sunken, so that the spring plate support 14 can maintain the current shape to a certain extent, when the air bag 17 expands due to the temperature rise of the valve body 1 and the conveying pipe 8, the spring plate support 14 can be jacked up by a larger acting force, the conducting strip 28 is separated from the conducting strip 26, and the design further avoids the first heating wire 12 and the second heating wire 13 from being frequently conducted, so that the anti-freezing effect is improved; the user can also control the driving gear 4 to rotate by shaking the handle 6, so as to drive the driven gear 10 to rotate, the driven gear 10 rotates and then drives the hitting ball 2 to hit the outer wall of the valve body 1 through the adjusting rod 11 and the elastic rod 3, so that the defrosting and antifreezing effects are achieved, when the hitting ball 2 contacts and hits the valve body 1, the gas in the hitting ball 2 is extruded out and impacts the valve body 1 through the deformation of the hitting ball 2, so that the gas flow rate on the surface of the valve body 1 is accelerated, the antifreezing effect is achieved to a certain extent, the through hole 24 ensures the deformation of the hitting ball 2, and the valve body 1 is prevented from being damaged due to overlarge acting force when the hitting is carried out; due to the arrangement of the first friction plate 20 and the second friction plate 21, the first friction plate 20 can be contacted with the second friction plate 21 to generate friction while the adjusting rod 11 rotates, so that the second friction plate 21 transmits the generated heat to the surface of the conveying pipe 8, and the heating purpose is realized.

Example 2:

a valve with an anti-freezing function, as shown in fig. 5, for facilitating automatic anti-freezing control; the present embodiment is modified from embodiment 1 as follows: the driving mechanism comprises a motor 30, a connecting shaft 5 and a driving gear 4, the connecting shaft 5 is mounted on the outer wall of one side of the conveying pipe 8 through a rotating shaft frame 7, the driving gear 4 is fixed on the outer wall of one end of the connecting shaft 5 through a screw, and the driving gear 4 is meshed with the driven gear 10; the motor 30 is fixed on the outer wall of one side of the rotating shaft frame 7 through screws, the output end of the motor 30 is rotatably connected to the outer wall of one end of the connecting shaft 5 through a coupler, and the two conducting strips 26 are connected into a control circuit of the motor 30.

When the electric heating ball freezing prevention device is used, the two conducting strips 26 are connected into the motor 30, so that the deformation of the air bag 17 is utilized to control the first heating wire 12 and the second heating wire 13 to work, the motor 30 can be controlled, the motor 30 drives mechanisms such as the hitting ball 2 to perform freezing prevention treatment on the hitting ball and the conveying pipe 8, and the control effect and the practicability are improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a valve with function of preventing frostbite, is including installing valve body (1) on conveyer pipe (8), a serial communication port, the embedded heating wire subassembly that installs of outer wall of valve body (1), the heating wire subassembly is including installing in first heating wire (12) on valve body (1) surface and installing second heating wire (13) of valve rod pivoted position department in valve body (1), install the control mechanism of control first heating wire (12) and second heating wire (13) work on conveyer pipe (8), conveyer pipe (8) circumference outer wall integral type is provided with two spacing rings (18), and has cup jointed gasbag (17) in the conveyer pipe (8) outside, and gasbag (17) are located between two spacing rings (18), control mechanism includes shell fragment support (14), backup pad (15) and mounting bracket (16), one side outer wall of shell fragment support (14) and backup pad (15) all installs in conveyer pipe (8) top through mounting bracket (16) The electric heating wire comprises an outer wall, wherein a conductive strip (28) is installed on the outer wall of the bottom of the supporting plate (15) through an upper support (29), two conductive sheets (26) are installed on the outer wall of the top of the supporting plate (15) through a lower support (25), the positions of the two conductive sheets (26) are matched with the conductive strip (28), and the conductive sheets (26) are connected into control circuits of the first electric heating wire (12) and the second electric heating wire (13); the outer wall of the top of the air bag (17) is connected with the outer wall of the bottom of one end of the spring support (14) through two symmetrical connecting columns (27).

2. The valve with the antifreezing function as claimed in claim 1, wherein the spring support (14) has an arc structure with a downward bent middle portion.

3. The valve with the antifreezing function according to claim 2, wherein the outer circumferential wall of the conveying pipe (8) is rotatably connected with a driven gear (10), the inner wall of one side of the driven gear (10) is provided with adjusting rods (11) which are uniformly and circumferentially distributed, one end of each adjusting rod (11) is fixed with an elastic rod (3) through screws, one end of each elastic rod (3) is bonded with a hitting ball (2), the hitting ball (2) is made of elastic rubber, the hitting ball (2) is matched with the valve body (1) in position, and one side of the driven gear (10) is provided with a driving mechanism for driving the driven gear (10) to rotate.

4. A valve with antifreezing function as claimed in claim 3, wherein the adjusting rods (11) are all connected to the inner wall of the driven gear (10) through threads, and the end of the adjusting rods (11) far away from the elastic rod (3) is fixed with the twisting plate (9) through screws.

5. The valve with the antifreezing function as defined in claim 4, wherein the hitting ball (2) has a hollow structure, and the outer wall of the hitting ball (2) is provided with uniformly distributed through holes (24).

6. The valve with the antifreezing function as claimed in claim 5, wherein the adjusting rods (11) are all provided with first friction plates (20), and the circumferential outer wall of the conveying pipe (8) is all provided with second friction plates (21) for transferring heat to the conveying pipe (8); the first friction plate (20) is matched with the second friction plate (21) in position.

7. The valve with the antifreezing function as claimed in claim 6, wherein the mounting seat (23) is welded on the outer wall of one side of the adjusting rod (11), the first friction plate (20) is slidably connected to the inner wall of the mounting seat (23) through a slide rod, the same spring (19) is welded on the outer wall of one side of the first friction plate (20) and the outer wall of one side of the adjusting rod (11), the distance from the first friction plate (20) to the conveying pipe (8) is less than the thickness of the second friction plate (21), and the arc surface for guiding the first friction plate (20) to contact with the second friction plate (21) is arranged on one side of the second friction plate (21).

8. A valve with antifreezing function according to claim 7, wherein the driven gear (10) and the delivery pipe (8) are slidably connected with the balls (22) which are uniformly distributed circumferentially.

9. The valve with the antifreezing function as claimed in any one of claims 3 to 8, wherein the driving mechanism comprises a handle (6), a connecting shaft (5) and a driving gear (4), the connecting shaft (5) is mounted on the outer wall of one side of the conveying pipe (8) through a rotating shaft bracket (7), the driving gear (4) and the handle (6) are respectively fixed at two ends of the connecting shaft (5) through screws, and the driving gear (4) is meshed with the driven gear (10).

10. The valve with the antifreezing function as claimed in any one of claims 3 to 8, wherein the driving mechanism comprises a motor (30), a connecting shaft (5) and a driving gear (4), the connecting shaft (5) is mounted on the outer wall of one side of the conveying pipe (8) through a rotating shaft bracket (7), the driving gear (4) is fixed on the outer wall of one end of the connecting shaft (5) through a screw, and the driving gear (4) is meshed with the driven gear (10); the motor (30) is fixed on the outer wall of one side of the rotating shaft frame (7) through screws, the output end of the motor (30) is connected to the outer wall of one end of the connecting shaft (5) through a shaft coupling in a rotating mode, and the two conducting strips (26) are connected into a control circuit of the motor (30).