CN111535918A

CN111535918A - Thermostat

Info

Publication number: CN111535918A
Application number: CN202010496946.7A
Authority: CN
Inventors: 宗立君
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-08-14
Anticipated expiration: 2039-12-13
Also published as: CN111535918B; CN110792505B; CN110792505A

Abstract

The invention discloses a thermostat, which comprises a thermostat seat, a thermostat body and a water outlet joint, wherein the inner wall of the thermostat seat is provided with a mounting groove, the thermostat body is arranged in the mounting groove, the water outlet joint is fixed on the thermostat seat through a bolt, the thermostat body comprises a shell, a valve arranged at the top of the shell and a first push rod arranged in the shell, the side wall of the shell is provided with a guide plate, the bottom of the valve is provided with a first sliding groove, and when the first push rod pushes the valve to move downwards, the guide plate can move along the first sliding groove; sheltering from the valve bottom under the effect of baffle, increasing the volume of thermostat body, making the coolant directly pass through from thermostat department when entering into near thermostat, stopping the microcirculation of coolant, make the coolant directly do the macrocycle after the thermostat body opens, promote the accurate nature of engine temperature control.

Description

Thermostat

Technical Field

The invention belongs to the technical field of engine cooling, and particularly relates to a thermostat.

Background

The thermostat assembly is mainly used for adjusting the temperature of an engine during working, the traditional thermostat assembly mainly comprises a shell and a thermostat in the shell, the cooling water circulation of the engine generally comprises a large circulation and a small circulation, the large circulation and the small circulation share a water outlet, and the thermostat opens and closes a water inlet of the large circulation to control the start and stop of the large circulation; however, the conventional thermostat cannot close the small cycle, so that the large cycle and the small cycle exist at the same time, and the temperature control of the engine is influenced.

Disclosure of Invention

The invention provides a thermostat to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a thermostat comprises a thermostat seat, a thermostat body and a water outlet joint, wherein a mounting groove is formed in the inner wall of the thermostat seat, the thermostat body is arranged in the mounting groove, the water outlet joint is fixed on the thermostat seat through a bolt, the thermostat body comprises a shell, a valve arranged at the top of the shell and a first push rod arranged in the shell, a guide plate is arranged on the side wall of the shell, a first sliding groove is formed in the bottom of the valve, and when the first push rod pushes the valve to move downwards, the guide plate can move along the first sliding groove; when the thermostat body is in a closed state, cooling water is blocked by the thermostat body, so that the cooling water makes small circulation under the thermostat body, and the guide plate is in a vertical state, so that the cooling water can smoothly flow through the guide plate, and the small circulation is guaranteed to be smoothly performed; when the temperature of cooling water rises, the thermostat body is in an opening state, the first push rod pushes the valve to move downwards, the guide plate is in an inclined state, the guide plate moves to one end of the first sliding groove along the first sliding groove, the bottom of the valve is shielded under the action of the guide plate, the size of the thermostat body is increased, a coolant directly passes through the thermostat when entering the vicinity of the thermostat, small circulation of the coolant is prevented, the coolant directly performs large circulation after the thermostat body is opened, and the accuracy of engine temperature control is improved; through the baffle to strikeing coolant on the thermostat play the effect of blockking, prevent that the cooling water direct impact from promoting the valve up-motion in the valve bottom, make being in the open mode that the valve lasts, the cooling water up-moves along the baffle inclined plane after strikeing on the baffle, is convenient for make the coolant liquid directly flow through on the thermostat body after strikeing the baffle, promotes the stability of thermostat body work.

A first sliding block is arranged in the first sliding groove, a third connecting plate is arranged at the bottom of the first sliding block, the guide plate is arranged on the third connecting plate, the guide plate is made of elastic materials, a first connecting groove is formed in the side wall of the shell, and the bottom of the third connecting plate is rotatably connected into the first connecting groove; the third connecting plate has a fixing effect on the guide plate, and the matching effect of the guide plate and the shell is improved; when the thermostat body is in a closed state, the first sliding block is positioned at one end of the first sliding groove, so that the guide plate is in a vertical state, and the guide plate is prevented from blocking the flow of cooling water; when the thermostat body is in an opening state, the first sliding block moves to the other end of the first sliding groove, and the guide plate is driven to move under the action of the third connecting plate, so that the guide plate is inclined in a tight state, the structural strength of the guide plate is increased, and the guide plate can guide cooling water conveniently; after the cooling water is impacted on the guide plate, small deformation occurs on the surface of the guide plate, the impact force of the cooling water is absorbed through the deformation of the guide plate, the cooling water is conveniently and directly guided through the thermostat body, the small circulation of the cooling water is closed and directly performed as the large circulation, and the influence of cooling water impact on the thermostat is reduced.

A first limiting spring matched with the first sliding block is arranged in the first sliding groove, a first through hole is formed in the side wall of the first sliding groove, and a push rod assembly matched with the first sliding block is arranged in the first through hole; after cooling water temperature risees, paraffin is heated and melts, liquid paraffin directly gets into push rod assembly position department through first through-hole, push rod assembly toward the outward movement under paraffin's effect, thereby make push rod assembly promote first slider along first spout motion, avoid opening of third connecting plate to the valve to cause the hindrance, make first slider along first spout inner wall motion when the valve moves down, make the valve be in the tilt state opening the back baffle, play to block the effect to the cooling water and prevent that the cooling water from doing the microcirculation in the thermostat bottom.

The push rod assembly comprises an installation pipe arranged in the first through hole and a second push rod arranged in the installation pipe, a first movable cavity is arranged in the installation pipe, the second push rod is arranged in the first movable cavity, and one end of the second push rod is provided with a push plate; the cooling water temperature rises and then melts paraffin, paraffin enters into the installation pipe after becoming liquid, promote second push rod forward motion under the effect of paraffin, make the push rod produce thrust to first slider, thereby make first slider produce the trend of removing along first spout inner wall, and then make the third connecting plate move to the tilt state under the effect of first slider, drive the baffle and move to the tilt state and play the effect of blockking to the cooling water, increase the flow controller volume, make the cooling water only do the macrocycle under the effect of baffle, avoid causing the influence to the temperature control of engine.

A liquid storage cavity is formed in the valve, supersaturated sodium acetate solution is arranged in the liquid storage cavity, a connecting sleeve communicated with the liquid storage cavity is arranged at the top of the valve, and the connecting sleeve is made of elastic material; when the valve is opened due to the temperature of cooling water, the cooling water contacts the connecting sleeve from the valve, heat in the cooling water is transferred to the supersaturated sodium acetate solution through the connecting sleeve, so that the solubility of the sodium acetate solution is increased, sodium acetate suspended in the sodium acetate solution is dissolved in the solution, and part of heat in the cooling water is absorbed by the sodium acetate when the sodium acetate is dissolved, so that the effect of assisting cooling water is achieved, and the cooling water is conveniently and quickly cooled; when the temperature of the cooling water is reduced, the temperature of the sodium acetate solution is reduced, the solubility of the sodium acetate is reduced, sodium acetate crystals are separated out, the sodium acetate solution can be reused, and the cooling speed of the cooling water is increased; through the elastic material of the connecting sleeve, the contact effect of the connecting sleeve and the inner wall of the water outlet joint is improved, so that the sealing effect of the thermostat body is improved, and the cooling liquid is prevented from leaking from the side wall of the valve.

The thermostat body also comprises a support frame, a second through hole matched with the shell is formed in the support frame, a support plate is arranged on the shell, and a support spring matched with the support frame is arranged on the support plate; after the valve is in the open mode, supporting spring is in compression state, and supporting spring produces thrust to the valve all the time, after cooling fluid temperature reduces, becomes solid state again after the paraffin cooling, pushes the valve up motion under supporting spring's effect, makes the valve resume fast to the closed mode, makes the quick closing of thermostat, promotes the reliability of thermostat work.

The supporting frame is provided with a connecting frame, a supporting block is rotatably connected to the connecting frame, the top of the first push rod is provided with a threaded hole, the supporting block penetrates through the threaded hole, and the side wall of the supporting block is provided with threads matched with the threaded hole; the supporting shoe rotates, makes first push rod up motion under the cooperation of screw thread, and first push rod up motion in the casing makes first push rod move toward rubber sleeve upper portion, reduces the distance that the rubber sleeve promoted first push rod, makes the valve be in the state of incompletely opening to the cooling demand under each operating mode is satisfied to thermostat control self aperture, promotes thermostat's application scope.

A third through hole is formed in the water outlet joint, a first connecting rod is arranged in the third through hole, a limiting plate is arranged on the side wall of the first connecting rod, and a first movable groove matched with the limiting plate is formed in the inner wall of the third through hole; a second connecting groove is formed in the supporting block, the first connecting rod penetrates through the second connecting groove, first transmission teeth are arranged on the side wall of the first connecting rod, and second transmission teeth matched with the first transmission teeth are arranged on the inner wall of the second connecting groove; after the water outlet joint is arranged on the throttle seat, the first connecting rod penetrates through the second connecting groove, so that the first connecting rod and the second connecting groove are matched; when the aperture of the thermostat needs to be adjusted, the first connecting rod is rotated to drive the supporting block to rotate, so that the first push rod moves upwards under the action of the supporting block, the descending distance of the valve is controlled, the cooling requirements of the engine under various working conditions are met, and the application range of the thermostat is enlarged.

The water outlet joint is provided with a connecting block matched with the first connecting rod, the first connecting rod is provided with a second movable cavity, a second limiting spring is arranged in the second movable cavity, the second limiting spring is provided with a limiting block, and the inner wall of the connecting block is provided with a limiting hole matched with the second limiting spring; the first connecting rod is rotated to adjust the position of the first push rod, when the first connecting rod rotates, the top of the limiting block is in contact with the inner wall of the connecting block, so that the first connecting rod can normally rotate, after the first connecting rod rotates by a specified angle, the limiting block is embedded into the limiting hole, and the first connecting rod is limited under the matching of the limiting block and the limiting hole, so that the purpose of reminding a user is achieved, the user can rotate the first connecting rod by a certain angle, the length of the first push rod can be controlled more easily, and the accuracy of controlling the thermostat is improved; when the stopper embedding was downthehole at spacing, the head rod was rotated to power, pushed the stopper to the second activity intracavity under the effect of torsion, made the stopper deviate from spacing downthehole, made the smooth rotation of head rod to promote the application scope of thermostat.

A third movable cavity is arranged in the first connecting rod, a plurality of second movable grooves are formed in the side wall of the third movable cavity, a first connecting plate is arranged in the third movable cavity, the first connecting plate is connected with a second connecting plate through a second connecting rod, a plurality of fourth through holes are formed in the second connecting plate, and a limiting rod matched with the fourth through holes is arranged on the connecting plate; a third connecting rod is arranged on the first connecting plate, the third connecting rod penetrates through the third movable cavity, and a fixed spring is arranged on the first connecting plate; under the mutual matching of the second connecting plate and the limiting rod, the second connecting plate is limited to prevent the second connecting plate from rotating, so that the first connecting rod is limited to prevent the first connecting rod from rotating, the first push rod is fixed to be at a specified height, and the control accuracy of the thermostat is improved; when the position of first push rod is adjusted to needs, upwards stimulate the third connecting rod, drive the second connecting plate and up move under the effect of third connecting rod, make the gag lever post deviate from in the fourth through-hole, the gag lever post loses the limiting displacement to the second connecting plate, makes the first connecting rod can normally rotate, is convenient for adjust the application scope of temperature saver to the position of first push rod under the effect of first connecting rod.

The invention has the following advantages: after the cooling water temperature rose, the thermostat body was in the open mode, first push rod promoted the valve and down moved, made the baffle be in the tilt state, the baffle moved to first spout one end along first spout, sheltered from the valve bottom under the effect of baffle, increased the volume of thermostat body, make the coolant directly pass through from the thermostat when entering into near the thermostat, the microcirculation of prevention coolant, make the coolant directly do the major cycle after the thermostat body is opened, promote the accuracy nature of engine temperature control.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic cross-sectional view of the present invention.

FIG. 3 is a schematic structural diagram of the thermostat body according to the present invention.

FIG. 4 is a first cross-sectional view of the thermostat body of the present invention.

Fig. 5 is an enlarged view of fig. 4 at B.

Fig. 6 is an enlarged view of fig. 4 at C.

FIG. 7 is a second cross-sectional view of the thermostat body according to the present invention.

FIG. 8 is a schematic cross-sectional view of a water outlet fitting of the present invention.

Fig. 9 is an enlarged view of a portion a in fig. 8.

Detailed Description

As shown in fig. 1 to 9, a thermostat comprises a thermostat seat 1, a thermostat body 3 and a water outlet joint 2, wherein an installation groove is formed in an inner wall of the thermostat seat 1, the thermostat body 3 is arranged in the installation groove, the water outlet joint 2 is fixed on the thermostat seat 1 through a bolt, the thermostat body 3 comprises a housing 31, a valve 32 arranged at the top of the housing 31, and a first push rod 34 arranged in the housing 31, and the thermostat body is a wax thermostat in the prior art and is not described herein again; a guide plate 391 is arranged on the side wall of the housing 31, a first sliding groove 330 is arranged at the bottom of the valve 32, and when the first push rod 34 pushes the valve 32 to move downwards, the guide plate 391 can move along the first sliding groove 330; when the thermostat body is in a closed state, cooling water is blocked by the thermostat body, so that the cooling water makes small circulation under the thermostat body, and the guide plate is in a vertical state, so that the cooling water can smoothly flow through the guide plate, and the small circulation is guaranteed to be smoothly performed; when the temperature of cooling water rises, the thermostat body is in an opening state, the first push rod pushes the valve to move downwards, the guide plate is in an inclined state, the guide plate moves to one end of the first sliding groove along the first sliding groove, the bottom of the valve is shielded under the action of the guide plate, the size of the thermostat body is increased, a coolant directly passes through the thermostat when entering the vicinity of the thermostat, small circulation of the coolant is prevented, the coolant directly performs large circulation after the thermostat body is opened, and the accuracy of engine temperature control is improved; through the baffle to strikeing coolant on the thermostat play the effect of blockking, prevent that the cooling water direct impact from promoting the valve up-motion in the valve bottom, make being in the open mode that the valve lasts, the cooling water up-moves along the baffle inclined plane after strikeing on the baffle, is convenient for make the coolant liquid directly flow through on the thermostat body after strikeing the baffle, promotes the stability of thermostat body work.

A first sliding block 393 is arranged in the first sliding groove 330, a third connecting plate 39 is arranged at the bottom of the first sliding block 393, the guide plate 391 is arranged on the third connecting plate 39, the guide plate 391 is made of rubber, a first connecting groove is arranged on the side wall of the shell 31, and the bottom of the third connecting plate 391 is rotatably connected in the first connecting groove; the third connecting plate has a fixing effect on the guide plate, and the matching effect of the guide plate and the shell is improved; when the thermostat body is in a closed state, the first sliding block is positioned at one end of the first sliding groove, so that the guide plate is in a vertical state, and the guide plate is prevented from blocking the flow of cooling water; when the thermostat body is in an opening state, the first sliding block moves to the other end of the first sliding groove, and the guide plate is driven to move under the action of the third connecting plate, so that the guide plate is inclined in a tight state, the structural strength of the guide plate is increased, and the guide plate can guide cooling water conveniently; after the cooling water is impacted on the guide plate, small deformation occurs on the surface of the guide plate, the impact force of the cooling water is absorbed through the deformation of the guide plate, the cooling water is conveniently and directly guided through the thermostat body, the small circulation of the cooling water is closed and directly performed as the large circulation, and the influence of cooling water impact on the thermostat is reduced.

A first limiting spring 392 matched with the first sliding block 393 is arranged in the first sliding groove 330, a first through hole is formed in the side wall of the first sliding groove 330, and a push rod assembly matched with the first sliding block 393 is arranged in the first through hole; after cooling water temperature risees, paraffin is heated and melts, liquid paraffin directly gets into push rod assembly position department through first through-hole, push rod assembly toward the outward movement under paraffin's effect, thereby make push rod assembly promote first slider along first spout motion, avoid opening of third connecting plate to the valve to cause the hindrance, make first slider along first spout inner wall motion when the valve moves down, make the valve be in the tilt state opening the back baffle, play to block the effect to the cooling water and prevent that the cooling water from doing the microcirculation in the thermostat bottom.

The push rod assembly comprises a mounting pipe 310 arranged in the first through hole and a second push rod 320 arranged in the mounting pipe 310, a first movable cavity 3101 is arranged in the mounting pipe 310, the second push rod 320 is arranged in the first movable cavity 3101, and a push plate 3201 is arranged at one end of the second push rod 320; the cooling water temperature rises and then melts paraffin, paraffin enters into the installation pipe after becoming liquid, promote second push rod forward motion under the effect of paraffin, make the push rod produce thrust to first slider, thereby make first slider produce the trend of removing along first spout inner wall, and then make the third connecting plate move to the tilt state under the effect of first slider, drive the baffle and move to the tilt state and play the effect of blockking to the cooling water, increase the flow controller volume, make the cooling water only do the macrocycle under the effect of baffle, avoid causing the influence to the temperature control of engine.

A liquid storage cavity 38 is formed in the valve 32, a supersaturated sodium acetate solution is arranged in the liquid storage cavity 38, a connecting sleeve 35 communicated with the liquid storage cavity 38 is arranged at the top of the valve 32, and the connecting sleeve 35 is made of heat-conducting rubber; when the valve is opened due to the temperature of cooling water, the cooling water contacts the connecting sleeve from the valve, heat in the cooling water is transferred to the supersaturated sodium acetate solution through the connecting sleeve, so that the solubility of the sodium acetate solution is increased, sodium acetate suspended in the sodium acetate solution is dissolved in the solution, and part of heat in the cooling water is absorbed by the sodium acetate when the sodium acetate is dissolved, so that the effect of assisting cooling water is achieved, and the cooling water is conveniently and quickly cooled; when the temperature of the cooling water is reduced, the temperature of the sodium acetate solution is reduced, the solubility of the sodium acetate is reduced, sodium acetate crystals are separated out, the sodium acetate solution can be reused, and the cooling speed of the cooling water is increased; through the elastic material of the connecting sleeve, the contact effect of the connecting sleeve and the inner wall of the water outlet joint is improved, so that the sealing effect of the thermostat body is improved, and the cooling liquid is prevented from leaking from the side wall of the valve.

The thermostat body 3 further comprises a support frame 37, a second through hole matched with the shell 31 is formed in the support frame 37, a support plate 311 is arranged on the shell 31, and a support spring 312 matched with the support frame 37 is arranged on the support plate 311; after the valve is in the open mode, supporting spring is in compression state, and supporting spring produces thrust to the valve all the time, after cooling fluid temperature reduces, becomes solid state again after the paraffin cooling, pushes the valve up motion under supporting spring's effect, makes the valve resume fast to the closed mode, makes the quick closing of thermostat, promotes the reliability of thermostat work.

The supporting frame 37 is provided with a connecting frame 33, the connecting frame 33 is rotatably connected with a supporting block 36, the top of the first push rod 34 is provided with a threaded hole, the supporting block 36 is arranged in the threaded hole in a penetrating manner, and the side wall of the supporting block 36 is provided with threads matched with the threaded hole; the supporting shoe rotates, makes first push rod up motion under the cooperation of screw thread, and first push rod up motion in the casing makes first push rod move toward rubber sleeve upper portion, reduces the distance that the rubber sleeve promoted first push rod, makes the valve be in the state of incompletely opening to the cooling demand under each operating mode is satisfied to thermostat control self aperture, promotes thermostat's application scope.

A third through hole is formed in the water outlet connector 2, a first connecting rod 21 is arranged in the third through hole, a limiting plate 214 is arranged on the side wall of the first connecting rod 21, and a first movable groove matched with the limiting plate 214 is formed in the inner wall of the third through hole; a second connecting groove is formed in the supporting block 36, the first connecting rod 21 penetrates through the second connecting groove, first transmission teeth are arranged on the side wall of the first connecting rod 21, and second transmission teeth matched with the first transmission teeth are arranged on the inner wall of the second connecting groove; after the water outlet joint is arranged on the throttle seat, the first connecting rod penetrates through the second connecting groove, so that the first connecting rod and the second connecting groove are matched; when the aperture of the thermostat needs to be adjusted, the first connecting rod is rotated to drive the supporting block to rotate, so that the first push rod moves upwards under the action of the supporting block, the descending distance of the valve is controlled, the cooling requirements of the engine under various working conditions are met, and the application range of the thermostat is enlarged.

The water outlet connector 2 is provided with a connecting block 23 matched with the first connecting rod 21, the first connecting rod 21 is provided with a second movable cavity 211, a second limiting spring 212 is arranged in the second movable cavity 211, the second limiting spring 212 is provided with a limiting block 213, and the inner wall of the connecting block 23 is provided with a limiting hole matched with the second limiting spring 212; the first connecting rod is rotated to adjust the position of the first push rod, when the first connecting rod rotates, the top of the limiting block is in contact with the inner wall of the connecting block, so that the first connecting rod can normally rotate, after the first connecting rod rotates by a specified angle, the limiting block is embedded into the limiting hole, and the first connecting rod is limited under the matching of the limiting block and the limiting hole, so that the purpose of reminding a user is achieved, the user can rotate the first connecting rod by a certain angle, the length of the first push rod can be controlled more easily, and the accuracy of controlling the thermostat is improved; when the stopper embedding was downthehole at spacing, the head rod was rotated to power, pushed the stopper to the second activity intracavity under the effect of torsion, made the stopper deviate from spacing downthehole, made the smooth rotation of head rod to promote the application scope of thermostat.

A third movable cavity is arranged in the first connecting rod 21, a plurality of second movable grooves are formed in the side wall of the third movable cavity, a first connecting plate 24 is arranged in the third movable cavity, the first connecting plate 24 is connected with a second connecting plate through a second connecting rod, a plurality of fourth through holes are formed in the second connecting plate, and a limiting rod 231 matched with the fourth through holes is arranged on the connecting block 23; a third connecting rod 242 is arranged on the first connecting plate 24, the third connecting rod 242 is arranged in the third movable cavity in a penetrating manner, and a fixed spring 241 is arranged on the first connecting plate 24; under the mutual matching of the second connecting plate and the limiting rod, the second connecting plate is limited to prevent the second connecting plate from rotating, so that the first connecting rod is limited to prevent the first connecting rod from rotating, the first push rod is fixed to be at a specified height, and the control accuracy of the thermostat is improved; when the position of first push rod is adjusted to needs, upwards stimulate the third connecting rod, drive the second connecting plate and up move under the effect of third connecting rod, make the gag lever post deviate from in the fourth through-hole, the gag lever post loses the limiting displacement to the second connecting plate, makes the first connecting rod can normally rotate, is convenient for adjust the application scope of temperature saver to the position of first push rod under the effect of first connecting rod.

It should be noted that the drawings in the present specification are only schematic and do not represent actual structures of the present invention.

Claims

1. The utility model provides a thermostat, includes thermostat seat (1), thermostat body (3) and delivery port joint (2), be equipped with the mounting groove on thermostat seat (1) inner wall, thermostat body (3) are located in the mounting groove, delivery port joint (2) are passed through the bolt fastening on thermostat seat (1), its characterized in that: the thermostat body (3) comprises a shell (31), a valve (32) arranged at the top of the shell (31) and a first push rod (34) arranged in the shell (31), a guide plate (391) is arranged on the side wall of the shell (31), a first sliding groove (330) is arranged at the bottom of the valve (32), and when the first push rod (34) pushes the valve (32) to move downwards, the guide plate (391) can move along the first sliding groove (330); a liquid storage cavity (38) is formed in the valve (32), a supersaturated sodium acetate solution is arranged in the liquid storage cavity (38), a connecting sleeve (35) communicated with the liquid storage cavity (38) is arranged at the top of the valve (32), and the connecting sleeve (35) is made of an elastic material; the thermostat body (3) further comprises a support frame (37), a second through hole matched with the shell (31) is formed in the support frame (37), a support plate (311) is arranged on the shell (31), and a support spring (312) matched with the support frame (37) is arranged on the support plate (311); a connecting frame (33) is arranged on the supporting frame (37), a supporting block (36) is rotatably connected onto the connecting frame (33), a threaded hole is formed in the top of the first push rod (34), the supporting block (36) penetrates through the threaded hole, and threads matched with the threaded hole are formed in the side wall of the supporting block (36); a third through hole is formed in the water outlet connector (2), a first connecting rod (21) is arranged in the third through hole, a limiting plate (214) is arranged on the side wall of the first connecting rod (21), and a first movable groove matched with the limiting plate (214) is formed in the inner wall of the third through hole; a second connecting groove is formed in the supporting block (36), the first connecting rod (21) penetrates through the second connecting groove, first transmission teeth are arranged on the side wall of the first connecting rod (21), and second transmission teeth matched with the first transmission teeth are arranged on the inner wall of the second connecting groove; a first sliding block (393) is arranged in the first sliding groove (330), a third connecting plate (39) is arranged at the bottom of the first sliding block (393), the guide plate (391) is arranged on the third connecting plate (39), the guide plate (391) is made of elastic materials, a first connecting groove is arranged on the side wall of the shell (31), and the bottom of the third connecting plate (391) is rotatably connected in the first connecting groove; be equipped with on the delivery port connects (2) with head rod (21) matched with connecting block (23), be equipped with second activity chamber (211) on head rod (21), be equipped with second spacing spring (212) in second activity chamber (211), be equipped with stopper (213) on second spacing spring (212), be equipped with on connecting block (23) inner wall with the spacing hole of second spacing spring (212) matched with.

2. A thermostat according to claim 1 wherein: a first limiting spring (392) matched with the first sliding block (393) is arranged in the first sliding groove (330), a first through hole is formed in the side wall of the first sliding groove (330), and a push rod assembly matched with the first sliding block (393) is arranged in the first through hole.

3. A thermostat according to claim 2 wherein: the push rod assembly comprises a mounting pipe (310) arranged in the first through hole and a second push rod (320) arranged in the mounting pipe (310), a first movable cavity (3101) is arranged in the mounting pipe (310), the second push rod (320) is arranged in the first movable cavity (3101), and one end of the second push rod (320) is provided with a push plate (3201).

4. A thermostat according to claim 1 wherein: a third movable cavity is arranged in the first connecting rod (21), a plurality of second movable grooves are formed in the side wall of the third movable cavity, a first connecting plate (24) is arranged in the third movable cavity, the first connecting plate (24) is connected with a second connecting plate through a second connecting rod, a plurality of fourth through holes are formed in the second connecting plate, and a limiting rod (231) matched with the fourth through holes is arranged on the connecting block (23); and a third connecting rod (242) is arranged on the first connecting plate (24), the third connecting rod (242) penetrates through the third movable cavity, and a fixed spring (241) is arranged on the first connecting plate (24).