CN220706574U - Antifreezing control valve - Google Patents

Abstract

The utility model relates to an antifreezing control valve, comprising: the valve comprises a valve shell, a water discharge tee joint, an executing mechanism and a control mechanism; the water discharge tee joint comprises a water passing channel and a water discharge channel; the actuating mechanism is provided with a reset piece, when the actuating mechanism is pressed, the actuating mechanism extrudes the reset piece and blocks the water passing channel and the water draining channel, and when the actuating mechanism is not pressed any more, the reset piece resets and drives the actuating mechanism to be communicated with the water passing channel and the water draining channel; the control mechanism comprises a temperature bulb and a locking assembly, one end of the temperature bulb is abutted with the valve shell, and the other end of the temperature bulb is connected with the locking assembly; pressing the actuating mechanism, and the locking assembly can be in limit fit with the actuating mechanism and lock the actuating mechanism; when the internal stroke of the bulb is reduced to the set size, the locking component and the executing mechanism are separated from limit matching relation. The utility model can ensure that drainage can be started only after the air temperature is reduced to the set value, and the problem of water leakage can not occur when the air temperature is not reduced to the set value, so that the reliability is better.

Description

Antifreezing control valve

Technical Field

The utility model relates to the technical field of valves, in particular to an antifreezing control valve.

Background

In a low-temperature environment in winter, tap water in the water pipe is likely to be frozen and cracked under the condition that tap water does not flow, so that maintenance is very troublesome, and for household tap water, the main gate is normally closed at night, and then the tap water in the water pipe is emptied, so that the freezing and cracking of the water pipe are prevented.

At present, in order to solve the above problem, an anti-freezing valve is adopted to realize automatic drainage control, and the principle is that an actuating mechanism of the valve is linked with a liquid temperature bulb, the liquid temperature bulb expands or contracts along with temperature change, and the liquid temperature bulb contracts and drives the actuating mechanism to act along with temperature reduction, so that the actuating mechanism opens the valve, and a main pipeline is communicated with a drainage pipeline, for example, the utility model patent application with the application publication number of CN112082264A is filed. However, the existing frost valve and the patent application of the utility model have the problem of poor reliability, namely, the slight deformation of the liquid temperature bulb can drive the actuating mechanism to act, the shrinkage deformation of the liquid temperature bulb to the set size is not performed at the same time, but is performed slowly, so that the problem of water leakage occurs because the sealing ring for sealing the valve port is not pressed any more when the liquid temperature bulb is not shrunk to the set size, and furthermore, the valve port is gradually opened, the main pipeline and the drainage pipeline are conducted, water resource is wasted, and the air temperature is not reduced to a certain degree, and drainage is not necessary.

Disclosure of Invention

The utility model aims to provide an antifreezing control valve which can enable a liquid temperature bulb to shrink and deform to a set size to start drainage, avoid the problem of water leakage and has high reliability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an antifreeze control valve comprising: the valve comprises a valve shell, a water discharge tee joint, an executing mechanism and a control mechanism;

the drainage tee joint is fixed relative to the valve shell, and comprises a water passing channel and a drainage channel;

the actuating mechanism is arranged in the valve casing, a reset piece is arranged on the actuating mechanism, when the actuating mechanism is pressed, the actuating mechanism extrudes the reset piece and blocks the water passing channel and the water draining channel, and when the actuating mechanism is not pressed any more, the reset piece resets and drives the actuating mechanism to be communicated with the water passing channel and the water draining channel;

the control mechanism is arranged in the valve casing and comprises a temperature bulb and a locking assembly, one end of the temperature bulb is abutted with the valve casing, and the other end of the temperature bulb is connected with the locking assembly; pressing the actuating mechanism, wherein the locking component can be in limit fit with the actuating mechanism and lock the actuating mechanism; when the internal stroke of the temperature bulb is reduced to the set size, the locking assembly and the executing mechanism are separated from limit matching relation.

The water discharge tee joint comprises a tee joint body, wherein a first pipe orifice, a second pipe orifice, a third pipe orifice, a fourth pipe orifice and a fifth pipe orifice are arranged on the tee joint body, the first pipe orifice and the second pipe orifice are communicated to form a water discharge channel, and the fourth pipe orifice and the fifth pipe orifice are communicated to form a water discharge channel; the third pipe orifice is communicated with the water passing channel, and the third pipe orifice can be communicated with the fourth pipe orifice through the executing mechanism.

The actuating mechanism further comprises a shell and a guide rod, the shell is fixed relative to the valve shell, the shell is in sealing connection with the tee body, and the inner cavity of the shell is communicated with the third pipe orifice and the fourth pipe orifice; one end of the guide rod penetrates through the shell and extends into the inner cavity of the shell, and the guide rod is in sliding sealing connection with the shell; one end of the guide rod penetrating through the shell is provided with a plug for plugging the third pipe orifice; one end of the guide rod, which is far away from the blockage, extends out of the valve casing; the reset piece is a spring, one end of the reset piece is abutted against the guide rod, and the other end of the reset piece is abutted against the tee body.

The guide rod is provided with a baffle ring and a first buffer cushion, the baffle ring is arranged in the inner cavity of the shell, the resetting piece is sleeved on the guide rod, one end of the resetting piece is abutted against the baffle ring, and the other end of the resetting piece is abutted against the tee body; the shell is also provided with a limiting surface for limiting the resetting stroke of the guide rod, and the limiting surface is in limiting fit with the baffle ring; the first buffer cushion is sleeved on the guide rod and is arranged between the limiting surface and the baffle ring.

The shell is non-rotatable relative to the tee body, and the guide rod is non-rotatable relative to the shell.

The locking assembly comprises a clamping pin, a guide seat, a first pressure spring and a second pressure spring, the guide seat is fixed relative to the valve housing, the clamping pin is connected to the guide seat in a sliding manner, one end of the clamping pin is provided with a locking piece, and the actuating mechanism is provided with a locking groove in limit fit with the locking piece; the first pressure spring and the second pressure spring are both sleeved on the clamping pin, two ends of the first pressure spring are respectively abutted against the clamping pin and the guide seat, and two ends of the second pressure spring are respectively abutted against the clamping pin and the temperature bulb.

The valve shell is also internally provided with a manual unlocking component which comprises a starting slide block, a third pressure spring and a limiting plug, wherein the starting slide block is abutted against the temperature bulb and is in sliding connection with the valve shell; the starting slide block is provided with a shifting block and a mounting hole, the shifting block extends out of the valve casing, and the valve casing is provided with a sliding groove matched with the shifting block; one end of the third pressure spring is abutted in the mounting hole, the other end of the third pressure spring is abutted with the limiting plug, and the limiting plug is slidably connected with the mounting hole; a limiting hole in limiting fit with the limiting plug is formed in the valve housing, and the limiting plug can be clamped into the limiting hole when the starting slide block is pushed to slide relative to the bulb; the outside of valve casing is equipped with the operation hole in intercommunication spacing hole.

And a side edge piece is further arranged on one side of the starting slide block, which is close to the temperature bulb.

One side of the starting slide block, which is far away from the temperature bulb, is also provided with a protection baffle, one end of the protection baffle is in limit fit with the valve shell, the other end of the protection baffle is in sliding fit with the starting slide block, and the starting slide block is provided with a protection groove matched with the protection baffle; the protective baffle is characterized in that a clamping groove is formed in the protective baffle, a second buffer cushion is arranged in the clamping groove, and two sides of the second buffer cushion are respectively abutted to the starting slide block and the valve casing.

The unlocking pressing assembly comprises an unlocking button and an unlocking pressure spring, the unlocking button is in sliding connection with the operation hole and is in limit fit with the operation hole, and the unlocking button partially extends out of the valve casing; the unlocking pressure spring is arranged in the valve shell, one end of the unlocking pressure spring is abutted against the unlocking button, and the other end of the unlocking pressure spring is abutted against the outer edge of the limiting hole; pressing the unlocking button can push the limiting plug out of the limiting hole.

After the scheme is adopted, the execution mechanism is locked by pressing the execution mechanism, and the locking assembly is enabled to lock the execution mechanism, so that the execution mechanism can be kept in a locked state before the air temperature is not reduced to a certain degree, the water discharge channel is blocked from being communicated with the water passing channel, the water passing channel is connected with the main pipeline, and the main pipeline normally operates at the moment. The temperature bag deforms along with the change of the air temperature, when the air temperature is reduced to a certain degree, the internal travel of the temperature bag is reduced to a set size, the temperature bag is linked with the locking assembly, the locking assembly is separated from the limiting matching relation with the actuating mechanism, the actuating mechanism is communicated with the water drainage channel and the water passing channel under the action of the reset piece, and water in the main pipeline can flow out of the water drainage channel. The utility model can ensure that drainage can be started only after the air temperature is reduced to the set value, and the problem of water leakage can not occur when the air temperature is not reduced to the set value, so that the reliability is better.

Drawings

FIG. 1 is a schematic diagram of the present utility model.

Fig. 2 is a schematic view of another view of the present utility model.

Fig. 3 is an exploded view of the present utility model.

Fig. 4 is a schematic view of the present utility model after hiding the first half-shell.

Fig. 5 is a schematic view of fig. 4 after concealing the second half-shell and housing.

Fig. 6 is a cross-sectional view (with the housing hidden) of the present utility model.

Marking:

valve casing 10, first half-shell 11, second half-shell 12, slot 13, limit cavity 14, chute 15, limit hole 16, operation hole 17, slot 18;

the three-way valve comprises a three-way body 21, a first pipe orifice 22, a second pipe orifice 23, a third pipe orifice 24, a fourth pipe orifice 25, a fifth pipe orifice 26, a water passing channel 27 and a water draining channel 28;

the device comprises a shell 31, a bulge 311, a sealing tube 312, a groove 313, a limit surface 314, a guide rod 32, a baffle ring 321, a convex part 322, a step surface 323, a locking groove 324, a reset piece 33, a first sealing ring 34, a second sealing ring 35, a first buffer pad 36, a key 37 and a convex block 371;

the temperature pack 41, the avoiding hole 411, the limiting column 412, the clamping pin 421, the guide seat 422, the first pressure spring 423, the second pressure spring 424, the locking piece 425, the retainer 426, the starting slide block 431, the third pressure spring 432, the limiting plug 433, the limiting groove 434, the shifting block 435, the mounting hole 436, the side edge piece 437, the protection groove 438, the protection baffle piece 44, the clamping hook 441, the clamping groove 442, the second cushion pad 45, the unlocking button 461 and the unlocking pressure spring 462.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in place when the product of the application is used, or the orientation or positional relationship conventionally understood by those skilled in the art, is merely for convenience of describing the present application and simplifying the description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the embodiments of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed.

As shown in fig. 1-6, the present utility model discloses an antifreeze control valve comprising: valve housing 10, drainage tee, actuator and control mechanism. The valve casing 10 is formed by splicing a first half casing 11 and a second half casing 12, so that other parts can be conveniently installed, and the first half casing 11 and the second half casing 12 are locked through bolting.

The drainage tee joint is fixed in position relative to the valve casing 10 and comprises a tee joint body 21, wherein a first pipe orifice 22, a second pipe orifice 23, a third pipe orifice 24, a fourth pipe orifice 25 and a fifth pipe orifice 26 are arranged on the tee joint body 21, the first pipe orifice 22 and the second pipe orifice 23 are communicated to form a water passing channel 27, and the water passing channel 27 is connected in series to a main pipeline; the fourth pipe orifice 25 and the fifth pipe orifice 26 are communicated to form a drainage channel 28, the drainage channel 28 is communicated with a drainage pipeline, the third pipe orifice 24 and the fourth pipe orifice 25 are arranged on the same side, the third pipe orifice 24 is communicated with a water passing channel 27, the third pipe orifice 24 can be communicated with the fourth pipe orifice 25 through an actuating mechanism, and the blocking or communication between the water passing channel 27 and the drainage channel 28 is realized by blocking or opening the third pipe orifice 24 through the actuating mechanism.

The actuator is arranged in the valve casing 10 and comprises a casing 31, a guide rod 32 and a reset piece 33, the casing 31 is fixed relative to the valve casing 10, the casing 31 can be clamped in the valve casing 10, and meanwhile, a non-circular protrusion 311 is arranged on the outer side of the casing 31 and is in limit fit with the valve casing 10, so that the casing 31 cannot rotate. The casing 31 is in sealing connection with the tee body 21, such as threaded connection of the casing 31 and the tee body 21, and sealing is performed by winding raw adhesive tape or gluing, or the casing 31 and the tee body 21 can be directly welded and sealed. After the shell 31 and the tee body 21 are sealed, water leakage can be avoided, the shell and the tee body cannot rotate mutually, and the tee body can be conveniently assembled. The housing 31 encloses the third nozzle 24 and the fourth nozzle 25, and the housing 31 has an inner cavity through which the third nozzle 24 communicates with the fourth nozzle 25.

One end of the guide rod 32 passes through the shell 31 and extends into the inner cavity of the shell 31, the guide rod 32 is in sliding connection with the shell 31, a sealing tube 312 is arranged on the shell 31, a plurality of first sealing rings 34 are sleeved on the guide rod 32, and gaps between the guide rod 32 and the shell 31 are sealed through the first sealing rings 34 to prevent water from seeping out of the shell 31. A first caulking groove for installing the first sealing ring 34 may be provided on the guide rod 32, so that the first sealing ring 34 cannot be easily moved, and sealing reliability between the guide rod 32 and the housing 31 is ensured.

One end of the guide rod 32 penetrating through the shell 31 is provided with a plug for plugging the third pipe orifice 24, the plug is formed by sleeving a second sealing ring 35 on the end part of the guide rod 32, the end part of the guide rod 32 is provided with a second caulking groove for installing the second sealing ring 35, so that the second sealing ring 35 cannot be easily moved, the third pipe orifice 24 can be reliably plugged by the plug, the third pipe orifice 24 can be designed to be wide-mouth, and the plug can be smoothly inserted into the third pipe orifice 24 and plugged.

In order to limit the travel of the guide rod 32, ensure the moving stability of the guide rod 32 and facilitate the setting of the resetting piece 33, a baffle ring 321 is arranged at one end of the guide rod 32, which is arranged in the inner cavity of the shell 31, the baffle ring 321 is slidably connected with the inner cavity of the shell 31, a convex part 322 is arranged on the baffle ring 321, a groove 313 which is slidably matched with the convex part 322 is arranged on the inner cavity wall of the shell 31, and the guide rod 32 can not rotate relative to the shell 31 due to the arrangement, so that the friction of a sealing ring is reduced, and the service life of the sealing ring is prolonged. The resetting piece 33 is a spring, one end of the resetting piece is abutted against the stop ring 321, and the other end is abutted against the tee body 21. The casing 31 is provided with a limiting surface 314 in limiting fit with the baffle ring 321, and the limiting surface 314 is matched with the baffle ring 321 to limit the reset stroke of the guide rod 32. In addition, a step surface 323 can be further disposed at one end of the guide rod 32 where the plug is disposed, so that the guide rod 32 can be in limit fit with the third nozzle 24, and further the stroke of the guide rod 32 inserted into the third nozzle 24 is limited, and excessive pressing of the guide rod 32 is avoided. In addition, a first buffer pad 36 is sleeved on the guide rod 32, and the first buffer pad 36 is arranged between the limiting surface 314 and the baffle ring 321 so as to avoid rigid collision between the baffle ring 321 and the shell 31.

The end of the guide rod 32 away from the blockage protrudes from the valve housing 10 so as to be convenient for the user to press, and the end of the guide rod 32 protruding from the valve housing 10 can be provided with a key 37 to improve operability. The part of this button 37 is arranged in valve casing 10, and the button 37 is arranged in the inside one end of valve casing 10 and is equipped with lug 371, be equipped with in valve casing 10 inside with lug 371 spacing complex slot 13, through lug 371 and slot 13 cooperation, can further inject the stroke of guide arm 32, facilitate the use and improve the reliability of operation. By pressing the key 37, the guide bar 32 is pushed against the elastic force of the reset member 33, the third nozzle 24 is blocked by the blockage, and the water passage 27 and the water discharge passage 28 are blocked. When the pressing force is lost, the guide rod 32 moves reversely under the reaction force of the reset piece 33, the third pipe orifice 24 is blocked, and the water passing channel 27 is communicated with the water discharging channel 28.

The control mechanism is disposed in the valve housing 10 and includes a bulb 41, a locking assembly and a manual unlocking assembly, wherein the bulb 41 is a liquid bulb, such as a liquid bulb of model TMS-01. One end of the temperature bulb 41 is abutted with the manual unlocking component, the other end of the temperature bulb is connected with the locking component, and when the actuating mechanism is pressed, the locking component can be in limit fit with the actuating mechanism and lock the actuating mechanism; when the internal stroke of the bulb 41 is reduced to a set size, the locking assembly and the actuating mechanism are separated from a limit fit relationship. The manual unlocking component is limited and blocked with the valve shell 10 in a normal state, and after the manual unlocking component and the valve shell 10 are blocked, the locking component can move in a direction away from the temperature bulb 41, so that the temperature bulb 41 and the locking component are both away from the actuating mechanism, and manual drainage is realized.

Specifically, the locking assembly includes a locking pin 421, a guide seat 422, a first compression spring 423 and a second compression spring 424, where the guide seat 422 is in a hat shape, and the hat brim of the guide seat 422 is locked with the valve housing 10, so that the guide seat 422 can be fixed in position relative to the valve housing 10. The bayonet lock 421 is slidably connected with the "cap top" of the guide seat 422, one end of the bayonet lock 421 close to the guide rod 32 is provided with a locking piece 425, the guide rod 32 is provided with a locking groove 324 in limit fit with the locking piece 425, preferably, the locking piece 425 is a hole, the hole is sleeved on the guide rod 32, and meanwhile, the outer edge of the hole is slidably connected with the valve casing 10 to ensure that the locking piece 425 cannot deviate. The middle position of the bayonet 421 is provided with a check ring 426, the first pressure spring 423 and the second pressure spring 424 are sleeved on the bayonet 421 and arranged on two sides of the check ring 426, one end of the first pressure spring 423 is abutted against the check ring 426, the other end is abutted against the cap hole of the guide seat 422, one end of the second pressure spring 424 is abutted against the check ring 426, the other end is abutted against the temperature pack 41, the temperature pack 41 is provided with an avoidance hole 411 for avoiding the bayonet 421, and the second pressure spring 424 extends into the avoidance hole 411. In order to ensure the stability of the movement of the bayonet 421, the retainer 426 is preferably slidably connected to the "cap hole" of the guide 422.

The manual unlocking assembly comprises a starting slide block 431, a third pressure spring 432 and a limiting plug 433, wherein the starting slide block 431 is abutted with one end of the temperature bulb 41, which is far away from the second pressure spring 424. In order to play a certain limiting role on the temperature pack 41, the temperature pack is also convenient to install during assembly, a limiting cavity 14 for limiting the temperature pack 41 is arranged on the valve shell 10, meanwhile, a limiting groove 434 is formed in one end, abutting against the temperature pack 41, of the starting slide block 431, a limiting column 412 matched with the limiting groove 434 is arranged on the temperature pack 41, and the limiting column 412 is arranged in the limiting groove 434. The starting slide block 431 is in sliding connection with the valve housing 10, the starting slide block 431 is provided with a shifting block 435, a mounting hole 436, a side edge piece 437 and a protective baffle piece 44, the shifting block 435 and the starting slide block 431 are integrally formed, the shifting block 435 extends out of the valve housing 10, the valve housing 10 is provided with a sliding groove 15 matched with the shifting block 435, and the sliding groove 15 can limit the stroke of the shifting block 435. After this arrangement, the drive slide can be conveniently moved outside the valve housing 10.

One end of the third compression spring 432 is abutted in the mounting hole 436, the other end is abutted with the limiting plug 433, and the limiting plug 433 is slidably connected in the mounting hole 436. The valve casing 10 is internally provided with a limiting hole 16 in limiting fit with the limiting plug 433, when the starting slide block 431 is pushed to slide relative to the temperature bulb 41, the limiting plug 433 moves to the position of the limiting hole 16, the limiting plug 433 can be clamped into the limiting hole 16 under the rebound force of the third pressure spring 432, and the valve casing 10 is externally provided with an operating hole 17 communicated with the limiting hole 16, so that the limiting plug 433 can be ejected out of the limiting hole 16 through the operating hole 17.

The side edge piece 437 is disposed on one side of the start slider 431 close to the bulb 41, and the side edge piece 437 and the start slider 431 are integrally formed. The side edge piece 437 can shield the chute 15 on one hand, prevent dust or other impurities from falling into the bulb 41 from the chute 15, and on the other hand, can assist in fixing the bulb 41.

The protection baffle 44 is disposed on one side of the starting slider 431 away from the bulb 41, and one end of the protection baffle 44 is in limit fit with the valve housing 10, so that the protection baffle 44 cannot move relative to the guide rod 32, but the protection baffle 44 can move slightly in a length direction parallel to the guide rod 32, so that the valve can be assembled conveniently, for example, a long groove 18 can be formed in the valve housing 10, a hook 441 is disposed on the protection baffle 44, and the hook 441 is disposed in the long groove 18. The other end of the protection baffle 44 is slidably engaged with the start slider 431, and a protection groove 438 slidably engaged with the protection baffle 44 is provided on the start slider 431. In addition, a clamping groove 442 is further provided on the protective baffle 44, a second buffer pad 45 is provided in the clamping groove 442, and two sides of the second buffer pad 45 respectively abut against the starting slide block 431 and the valve housing 10 to prevent the two from rigidly colliding.

In order to facilitate ejection of the spacing plug 433 out of the spacing hole 16, an unlocking pressing assembly may be further provided, which includes an unlocking button 461 and an unlocking pressure spring 462, wherein the unlocking button 461 is slidably connected with the operation hole 17 and is in spacing fit, and the unlocking button 461 partially extends out of the valve housing 10 so as to be pressed. The unlocking pressure spring 462 is disposed inside the valve housing 10, one end of the unlocking pressure spring 462 abuts against the unlocking button 461, the other end abuts against the outer edge of the limiting hole 16, and the unlocking button 461 is pressed to push the limiting plug out of the limiting hole 16.

When the spacing plug 433 is clamped into the spacing hole 16, the temperature bulb 41 deforms along with the change of air temperature, and when the air temperature is reduced, the temperature bulb 41 is contracted, so that the rebound force of the second pressure spring 424 is weakened, the first pressure spring 423 pushes the bayonet 421 back, the locking piece 425 on the bayonet 421 gradually falls out of the locking groove 324, and the spacing relation between the locking piece 425 and the locking groove 324 is unchanged until the locking piece 425 completely falls out of the locking groove 324, so that the guide rod 32 can be kept still all the time, and the third pipe orifice 24 is blocked reliably, and no water leakage is ensured. And after the locking member 425 is completely removed from the locking groove 324, the guide rod 32 is rapidly moved reversely under the force of the reset member 33, thus blocking the third nozzle 24, and the valve port is rapidly opened to the maximum extent for draining. After the locking member 425 is disengaged from the locking groove 324, only the button 37 needs to be pressed down before the next use.

When the forced drainage is needed, the unlocking button 461 is pressed, the limiting plug 433 is pushed out of the limiting hole 16, the position of the starting slide block 431 is not locked, the starting slide block 431 can be pushed open under the rebound force of the first pressure spring 423 and the second pressure spring 424, at the moment, the temperature bulb 41 loses the supporting force, the rebound force of the second pressure spring 424 can be rapidly released and weakened no matter how the temperature bulb deforms, the first pressure spring 423 pushes the bayonet lock 421 reversely, the locking piece 425 on the bayonet lock 421 is separated from the locking groove 324, the guide rod 32 moves reversely and blocks the third pipe orifice 24, and the valve port is rapidly opened to the maximum degree for drainage.

The key point of the utility model is that the locking assembly locks the actuating mechanism by pressing the actuating mechanism, and the actuating mechanism can be kept in a locked state before the temperature is not reduced to a certain degree, so that the water draining channel 28 is blocked from being communicated with the water passing channel 27, and the water passing channel 27 is connected with the main pipeline, and the main pipeline normally operates at the moment. The temperature bulb 41 deforms along with the change of the air temperature, when the air temperature is reduced to a certain degree, the temperature bulb 41 is reduced to a set size, the temperature bulb 41 is linked with the locking assembly, the locking assembly is separated from the limiting matching relation with the actuating mechanism, the actuating mechanism is used for communicating the drainage channel 28 with the water channel 27 under the action of the reset piece 33, and water in the main pipeline can flow out of the drainage channel 28. The utility model can ensure that drainage can be started only after the air temperature is reduced to the set value, and the problem of water leakage can not occur when the air temperature is not reduced to the set value, so that the reliability is better.

The foregoing embodiments of the present utility model are not intended to limit the technical scope of the present utility model, and therefore, any minor modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical proposal of the present utility model.

Claims (10)

1. An antifreeze control valve, comprising: the valve comprises a valve shell, a water discharge tee joint, an executing mechanism and a control mechanism;

the drainage tee joint is fixed relative to the valve shell, and comprises a water passing channel and a drainage channel;

the actuating mechanism is arranged in the valve casing, a reset piece is arranged on the actuating mechanism, when the actuating mechanism is pressed, the actuating mechanism extrudes the reset piece and blocks the water passing channel and the water draining channel, and when the actuating mechanism is not pressed any more, the reset piece resets and drives the actuating mechanism to be communicated with the water passing channel and the water draining channel;

the control mechanism is arranged in the valve casing and comprises a temperature bulb and a locking assembly, one end of the temperature bulb is abutted with the valve casing, and the other end of the temperature bulb is connected with the locking assembly; pressing the actuating mechanism, wherein the locking component can be in limit fit with the actuating mechanism and lock the actuating mechanism; when the internal stroke of the temperature bulb is reduced to the set size, the locking assembly and the executing mechanism are separated from limit matching relation.

2. The antifreeze control valve of claim 1, wherein: the water discharge tee joint comprises a tee joint body, wherein a first pipe orifice, a second pipe orifice, a third pipe orifice, a fourth pipe orifice and a fifth pipe orifice are arranged on the tee joint body, the first pipe orifice and the second pipe orifice are communicated to form a water discharge channel, and the fourth pipe orifice and the fifth pipe orifice are communicated to form a water discharge channel; the third pipe orifice is communicated with the water passing channel, and the third pipe orifice can be communicated with the fourth pipe orifice through the executing mechanism.

3. The antifreeze control valve of claim 2, wherein: the actuating mechanism further comprises a shell and a guide rod, the shell is fixed relative to the valve shell, the shell is in sealing connection with the tee body, and the inner cavity of the shell is communicated with the third pipe orifice and the fourth pipe orifice; one end of the guide rod penetrates through the shell and extends into the inner cavity of the shell, and the guide rod is in sliding sealing connection with the shell; one end of the guide rod penetrating through the shell is provided with a plug for plugging the third pipe orifice; one end of the guide rod, which is far away from the blockage, extends out of the valve casing; the reset piece is a spring, one end of the reset piece is abutted against the guide rod, and the other end of the reset piece is abutted against the tee body.

4. An antifreeze control valve according to claim 3, wherein: the guide rod is provided with a baffle ring and a first buffer cushion, the baffle ring is arranged in the inner cavity of the shell, the resetting piece is sleeved on the guide rod, one end of the resetting piece is abutted against the baffle ring, and the other end of the resetting piece is abutted against the tee body; the shell is also provided with a limiting surface for limiting the resetting stroke of the guide rod, and the limiting surface is in limiting fit with the baffle ring; the first buffer cushion is sleeved on the guide rod and is arranged between the limiting surface and the baffle ring.

5. An antifreeze control valve according to claim 3, wherein: the shell is non-rotatable relative to the tee body, and the guide rod is non-rotatable relative to the shell.

6. The antifreeze control valve of claim 1, wherein: the locking assembly comprises a clamping pin, a guide seat, a first pressure spring and a second pressure spring, the guide seat is fixed relative to the valve housing, the clamping pin is connected to the guide seat in a sliding manner, one end of the clamping pin is provided with a locking piece, and the actuating mechanism is provided with a locking groove in limit fit with the locking piece; the first pressure spring and the second pressure spring are both sleeved on the clamping pin, two ends of the first pressure spring are respectively abutted against the clamping pin and the guide seat, and two ends of the second pressure spring are respectively abutted against the clamping pin and the temperature bulb.

7. The antifreeze control valve of claim 1, wherein: the valve shell is also internally provided with a manual unlocking component which comprises a starting slide block, a third pressure spring and a limiting plug, wherein the starting slide block is abutted against the temperature bulb and is in sliding connection with the valve shell; the starting slide block is provided with a shifting block and a mounting hole, the shifting block extends out of the valve casing, and the valve casing is provided with a sliding groove matched with the shifting block; one end of the third pressure spring is abutted in the mounting hole, the other end of the third pressure spring is abutted with the limiting plug, and the limiting plug is slidably connected with the mounting hole; a limiting hole in limiting fit with the limiting plug is formed in the valve housing, and the limiting plug can be clamped into the limiting hole when the starting slide block is pushed to slide relative to the bulb; the outside of valve casing is equipped with the operation hole in intercommunication spacing hole.

8. The antifreeze control valve of claim 7, wherein: and a side edge piece is further arranged on one side of the starting slide block, which is close to the temperature bulb.

9. The antifreeze control valve of claim 7, wherein: one side of the starting slide block, which is far away from the temperature bulb, is also provided with a protection baffle, one end of the protection baffle is in limit fit with the valve shell, the other end of the protection baffle is in sliding fit with the starting slide block, and the starting slide block is provided with a protection groove matched with the protection baffle; the protective baffle is characterized in that a clamping groove is formed in the protective baffle, a second buffer cushion is arranged in the clamping groove, and two sides of the second buffer cushion are respectively abutted to the starting slide block and the valve casing.

10. The antifreeze control valve of claim 7, wherein: the unlocking pressing assembly comprises an unlocking button and an unlocking pressure spring, the unlocking button is in sliding connection with the operation hole and is in limit fit with the operation hole, and the unlocking button partially extends out of the valve casing; the unlocking pressure spring is arranged in the valve shell, one end of the unlocking pressure spring is abutted against the unlocking button, and the other end of the unlocking pressure spring is abutted against the outer edge of the limiting hole; pressing the unlocking button can push the limiting plug out of the limiting hole.