CN219866415U - Valve - Google Patents

Abstract

The utility model discloses a valve, wherein a driving piece is rotationally connected with a valve body; the sliding piece is in threaded connection with the driving piece so as to be driven by the driving piece to slide in a reciprocating manner; the transmission part is positioned at one end of the sliding part, which is away from the driving part; the two ends of the first elastic piece respectively act on the sliding piece and the transmission piece; the temperature sensing piece is positioned at one end of the transmission piece, which is away from the first elastic piece, and is provided with a telescopic part which is suitable for propping against the transmission piece; the sealing element is fixedly connected with the temperature sensing element, one end of the sealing element is suitable for abutting against or separating from the sliding element to close or open the cold water gap, and the other end of the sealing element is suitable for abutting against or separating from the valve body to close or open the hot water gap; the sealing element is also provided with an abutting surface facing the transmission element; when the driving piece rotates along the water closing position, the sliding piece drives the transmission piece to push the telescopic part and then the abutting surface to drive the temperature sensing piece and the sealing piece to move to close the hot water gap; the driving piece is rotated continuously, and the sliding piece overcomes the action of the first elastic piece to slide to close the cold water gap. The valve has a small rotation angle of the driving member.

Description

Valve

Technical Field

The utility model relates to the field of cleaning products, in particular to a valve.

Background

Most of constant temperature switch valves realize temperature adjustment, boiled water and water closing through a rotary driving piece. In the opening process, the rotary driving part is adjusted according to the sequence of the cold water area, the warm water area and the high temperature area, and the closing process is opposite. However, when in actual use, a part of the temperature interval is not commonly used, but the rotation angle of the driving piece is increased, so that the rotation angle of the user is larger when the water temperature is adjusted, and the use experience of the user is affected.

Disclosure of Invention

The present utility model has been made to overcome the above-mentioned drawbacks or problems occurring in the prior art, and an object of the present utility model is to provide a valve in which the rotation angle of the driving member is small.

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

scheme one: a valve comprises a valve body, a driving piece, a sliding piece, a transmission piece, a first elastic piece, a temperature sensing piece and a sealing piece; the valve body is provided with a valve cavity, and a cold water inlet, a hot water inlet and a water outlet which are communicated with the valve cavity; the driving piece is rotationally connected with the valve body around a first axis; the sliding piece is arranged in the valve cavity, is in threaded connection with the driving piece and is in anti-rotation fit with the valve body, so that the sliding piece is driven by the driving piece to slide back and forth along the first axis; the transmission piece is arranged in the valve cavity and is positioned at one end of the sliding piece, which is away from the driving piece; two ends of the first elastic piece respectively act on the sliding piece and the transmission piece; the temperature sensing piece is positioned at one end of the transmission piece, which is away from the first elastic piece, and is provided with a telescopic part which is suitable for propping against the transmission piece and has a length positively correlated with the water temperature of the water outlet; the sealing piece is arranged in the valve cavity and fixedly connected with the temperature sensing piece, one end of the sealing piece is suitable for abutting against or separating from the sliding piece to close or open the cold water gap, and the other end of the sealing piece is suitable for abutting against or separating from the valve body to close or open the hot water gap; the cold water gap is respectively communicated with the cold water inlet and the water outlet; the hot water gap is respectively communicated with the hot water inlet and the hot water outlet; the sealing element is also provided with an abutting surface facing the transmission element; one end of the second elastic piece acts on the temperature sensing piece or the sealing piece, and the other end acts on the valve body; when the driving piece rotates along the water closing position, the sliding piece drives the transmission piece to push the telescopic part of the temperature sensing piece to drive the temperature sensing piece and the sealing piece to move against the elastic force of the second elastic piece so as to reduce the hot water gap; until the transmission piece abuts against the abutting surface, the transmission piece pushes against the abutting surface to drive the temperature sensing piece and the sealing piece to move to close the hot water gap; continuing to rotate the driving piece, the sliding piece overcomes the action of the first elastic piece and slides towards the sealing piece to close the cold water gap.

Scheme II: based on the first scheme, a mixing cavity is further arranged in the valve body; the mixing cavity is positioned at one end of the sealing element away from the transmission element; the sealing piece is sleeved outside the temperature sensing piece and fixedly connected with the temperature sensing piece, and a water channel communicated with the mixing cavity is formed between the inner wall of the sealing piece and the outer wall of the temperature sensing piece; the water outlet is communicated with the mixing cavity; the cold water gap is communicated with the water channel; the hot water gap is communicated with the mixing cavity; one end of the temperature sensing piece, which is far away from the telescopic part, stretches into the mixing cavity and is used for sensing water temperature so that the length of the telescopic part changes according to the water temperature.

Scheme III: according to the first scheme, a first sealing part is arranged at one end of the sealing element, which faces the sliding element, and a second sealing part is arranged at one end of the sealing element, which is far away from the sliding element; the first sealing part and the second sealing part are made of flexible materials and are suitable for deformation when being abutted; the bottom end of the sliding piece is provided with a first abutting part facing the first sealing part, and the first abutting part is suitable for abutting against or separating from the first sealing part to close or open the cold water gap; the valve body is provided with a second abutting part facing the second sealing part, and the second abutting part is suitable for abutting against or separating from the second sealing part to close or open the hot water gap.

Scheme IV: based on the third aspect, the seal further comprises a seal body; a protrusion extending towards the sliding piece is arranged at one end of the sealing piece body towards the sliding piece; the protrusion forms the abutment surface toward an end surface of the slider; a first groove and a second groove are respectively arranged at two ends of the sealing element body; the first groove opening faces the first abutting portion; the second groove opening faces the second abutting portion; the first sealing part is arranged in the first groove; the second seal is disposed within the second groove.

Scheme five: based on the third scheme, a first limiting surface facing the sealing element is arranged at the bottom end of the sliding element; the sealing piece is provided with a second limiting surface matched with the first limiting surface; when the first limiting surface is abutted with the second limiting surface, the first abutting part cannot continuously move towards the first sealing part; one end of the sealing piece, which is away from the sliding piece, is provided with a third limiting surface, which is away from the sliding piece; the valve body is provided with a fourth limiting surface which is matched with the third limiting surface; when the third limiting surface is abutted with the fourth limiting surface, the second abutting part cannot continue to move towards the second sealing part.

Scheme six: based on the third scheme, a third abutting part is further arranged on the valve body; the first sealing part is suitable for abutting against or separating from the third abutting part to open or close the communication between the cold water inlet and the cold water gap; when the first sealing part abuts against the first abutting part, the third abutting part is far away from the first sealing part; when the cold water gap is maximum, the third abutment is located between the first abutment and the first seal.

Scheme seven: in one aspect, the slider is provided with a first cavity open facing away from the driver; a fifth limiting surface facing the driving piece is arranged in the first cavity; one end of the transmission piece extends into the first cavity and is provided with a sixth limiting surface which is suitable for being abutted with the fifth limiting surface; the first elastic piece is arranged in the first cavity, two ends of the first elastic piece respectively prop against the sliding piece and the transmission piece, and the transmission piece is always pushed against in the direction of propping against the fifth limiting surface.

Scheme eight: based on a seventh scheme, the sliding piece comprises a screw rod and a clamping piece, the screw rod is in threaded connection with the driving piece, the screw rod is provided with a second cavity and a mounting groove, and the mounting groove is opened on the cavity wall of the second cavity; the clamping piece is arranged in the mounting groove and partially exposed out of the mounting groove, a first cavity is formed by enclosing the mounting groove and the inner wall of the second cavity above the mounting groove, and the fifth limiting surface is arranged on the clamping piece; and two ends of the first elastic piece are respectively propped against the screw rod and the transmission piece.

Scheme nine: based on the first scheme, the filter further comprises a first filter screen and a second filter screen; the first filter screen is arranged on the valve body and filters water flow entering the cold water inlet; the second filter screen is arranged on the valve body and filters water flow entering the hot water inlet.

Scheme ten: according to a first scheme, the driving piece is provided with a spiral cavity with an opening facing the sliding piece; the sliding piece stretches into the spiral cavity to be in spiral fit with the driving piece, and the spiral cavity is communicated with the cold water inlet.

From the above description of the present utility model, compared with the prior art, the present utility model has the following advantages:

1. when the existing thermostatic switch valve is used for closing water, the rotary driving piece rotates towards the water closing position to drive the sliding piece to slide, and the sliding piece drives the transmission piece to push the telescopic part of the sliding piece so that the temperature sensing piece and the sealing piece overcome the elastic force of the second elastic piece to move, and therefore a hot water gap is closed; the driving piece is rotated continuously, and the sliding piece overcomes the action of the first elastic piece and slides towards the sealing piece to close the cold water gap. Although the temperature is gradually changed during the process of turning off the hot water in this way, the user increases the angle of the user's rotation driving member due to less use of the partial temperature interval.

According to the scheme, the abutting surface is arranged on the sealing piece, in the water closing process, the sliding piece drives the transmission piece to push the telescopic part to drive the temperature sensing piece and the sealing piece to overcome the elastic force of the second elastic piece so as to reduce the hot water gap; when the transmission piece abuts against the abutting surface, the transmission piece drives the temperature sensing piece and the sealing piece to move through the abutting surface to quickly close the hot water gap. The driving piece is rotated continuously, and the sliding piece overcomes the action of the first elastic piece and slides towards the sealing piece to close the cold water gap. As the telescopic part gradually shortens along with the reduction of the temperature in the process of closing the hot water; the position of the contact surface is not affected by temperature. Therefore, the mode that hot water is closed through the mode that the telescopic part is firstly abutted and then the abutting surface is abutted to the transmission part in the scheme, so that the rotation angle of the driving part is reduced in the process of closing the hot water gap, the integral rotation angle of the driving part is reduced when the driving part is used for adjusting the temperature, and the user experience is improved. Meanwhile, the constant temperature interval from the abutting face of the transmission piece to the process of closing the hot water gap is also canceled, and the canceled constant temperature interval can be adjusted according to the need by changing the position of the abutting face in actual use, so that the less constant temperature interval for users is canceled.

2. Cold water enters the mixing cavity from the cold water gap through the water channel; hot water enters the mixing cavity from the hot water gap and flows out of the water outlet after being mixed with cold water. The setting of mixing chamber for hot water and cold water can mix more evenly in mixing chamber, the temperature of temperature sensing spare response is also more accurate, makes the temperature sensing spare more accurate when realizing constant temperature regulation.

3. The first sealing part and the second sealing part are made of flexible materials and are suitable for deformation when being abutted, so that the sealing effect is better and water leakage is prevented when the first abutting part and the second abutting part are respectively abutted against the first sealing part and the second sealing part.

4. The first groove and the second groove are arranged on the sealing element body to install the first sealing part and the second sealing part, so that the sealing element body can be made of materials with rigidity better than that of the first sealing part and the second sealing part, and performance requirements during use are met.

5. The first limiting surface and the second limiting surface are arranged, the distance between the first abutting portion and the first sealing portion is limited, and the first sealing portion is prevented from being excessively deformed to influence the service life of the first sealing piece. And the third limiting surface and the fourth limiting surface are arranged to limit the propping distance between the second abutting part and the second sealing part, so that the second sealing part is prevented from being excessively deformed, and the service life of the second sealing part is prevented from being influenced.

6. When the first sealing portion abuts against the first abutting portion, the third abutting portion is away from the first sealing portion. When the sliding piece slides towards the boiled water position, the first abutting part is separated from the abutting joint of the first sealing part to open the cold water gap, and the third abutting part is arranged on the valve body and cannot move, so that the third abutting part is far away from the first sealing part and cannot influence the communication between the cold water and the cold water gap. When the valve is in use, a sudden loss of hot water supply may be encountered, at which point the water temperature may suddenly drop. The telescopic part of the temperature sensing piece is shortened, and the sealing piece moves towards the first abutting part under the action of the second elastic piece so as to reduce the cold water gap. When the sliding piece slides to the boiled water position until the cold water gap is maximum, the third abutting part is positioned between the first abutting part and the first sealing part, so that when the first abutting part is far away from the first sealing part than the third abutting part, the cold water inlet can be abutted against the first sealing part through the third abutting part, so that the cold water inlet cannot be communicated with the cold water gap, and the cold water can be quickly closed.

7. The transmission piece is arranged in the first cavity, one end of the transmission piece is suitable for being abutted with the fifth limiting surface through the sixth limiting surface to be limited, and the other end of the transmission piece is limited by the first elastic piece. The arrangement is such that the driving member can move together with the sliding member and also can slide relative to the sliding member, so that the sliding member can move relative to the driving member to close the cold water gap after the hot water gap is closed.

8. The sliding part comprises a screw rod and a clamping part, wherein the clamping part is arranged in a mounting groove of the screw rod and is enclosed together with the screw rod to form a first cavity. And the fifth limiting surface is arranged on the clamping piece. The clamping piece can be detached, so that the transmission piece and the sliding piece can be conveniently installed and detached.

9. The first filter screen and the second filter screen are arranged to filter the water entering the cold water inlet and the hot water inlet, so that the valve is prevented from being blocked, and the service life is prolonged.

10. The sliding piece stretches into the spiral cavity to be in spiral fit with the driving piece, and the spiral cavity is communicated with the cold water inlet. When the cold water gap is filled with water, the sliding part is positioned at one end of the spiral cavity and one end of the sliding part facing the sealing part, so that the pressure is more balanced, and the sliding part is not influenced by the water pressure to drive the sliding part to move.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded perspective view of a valve according to a first embodiment;

FIG. 2 is a schematic view of the structure of the valve in the first embodiment when the valve is closed;

FIG. 3 is a schematic view of the structure of the valve in the first embodiment at constant temperature;

FIG. 4 is a schematic view showing a structure of a valve for closing a hot water gap in the first embodiment;

FIG. 5 is an enlarged view of a portion of FIG. 4A;

fig. 6 is an exploded perspective view of the seal member in the first embodiment.

The main reference numerals illustrate:

a valve body 1; a valve chamber 11; an upper case 12; an upper chamber 121; a third abutting portion 122; a lower case 13; a lower chamber 131; a mixing chamber 132; a second abutment 1321; a water outlet 133; a cold water inlet 134; a first annular wall 135; a fourth limit surface 1351; a hot water channel 136; a hot water inlet 1361; a cold water channel 137; a water outlet 1371;

a driving member 2; a spiral cavity 21;

e-shaped clamp springs 3;

a slider 4; a screw 41; a mounting slot 411; a first abutting portion 412; a first limiting surface 413; a clip 42; a fifth limiting surface 421; a first chamber 43;

a transmission member 5; a sixth limiting surface 51; a groove 52;

a first elastic member 6;

a temperature sensing member 7; a telescopic portion 71; a first wall 72;

a seal 8; a seal body 81; a protrusion 811; a first body 812; a boss 8121; a second limit surface 8122; a second body 813; a water hole 8131; a third body 814; a third limit surface 8141; a first groove 815; a first anti-slip surface 8151; a second slot 816; a second anti-slip surface 8161; a first sealing portion 82; a second sealing portion 83;

A second elastic member 9;

a first filter screen 10;

a second filter 100;

a valve 200; water channel 2001;

a first axis A1.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is to be understood that the described embodiments are preferred embodiments of the utility model and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without creative efforts, are within the protection scope of the present utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the utility model.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

As shown in fig. 1, 2, 4 and 6, the valve 200 includes a valve body 1, a driving member 2, an E-shaped clip spring 3, a sliding member 4, a transmission member 5, a first elastic member 6, a temperature sensing member 7, a sealing member 8, a second elastic member 9, a first filter screen 10 and a second filter screen 100. Wherein the driver 2 is rotatably connected with the valve body 1 about a first axis A1.

As shown in fig. 1, 2, 4 and 5, the valve body 1 is provided with a valve chamber 11, a second abutment 1321, a fourth limit surface 1351, a third abutment 122, and a cold water inlet 134, a hot water inlet 1361, a water outlet 133 and a mixing chamber 132 communicating with the valve chamber 11.

Specifically, as shown in fig. 1, 2, 4, the valve body 1 includes an upper case 12 and a lower case 13 extending in the extending direction of the first axis A1. An upper chamber 121 extending along the extending direction of the first axis A1 is provided in the upper housing 12, and both ends of the upper chamber 121 are opened. An external thread is arranged on the outer wall of the bottom end of the upper shell 12.

As shown in fig. 1, 2 and 4, a lower chamber 131, a mixing chamber 132 and a water outlet 133 are disposed in the lower housing 13 along the extending direction of the first axis A1. The lower chamber 131 is open at the top end and communicates with the mixing chamber 132 at the bottom end. A plurality of cold water inlets 134 are circumferentially distributed on the side wall of the lower chamber 131, and internal threads are arranged on the inner wall of the top end of the lower chamber 131. The mixing chamber 132 is open at the top end to communicate with the lower chamber 131. The water outlet 133 communicates with the mixing chamber 132. The lower housing 13 is formed with a first annular wall 135 disposed around the mixing chamber 132 at a position near the top end of the mixing chamber 132. The lower housing 13 is further provided with a hot water channel 136 and a cold water channel 137, and the hot water channel 136 and the cold water channel 137 are both open at the bottom wall of the lower housing 13 and are respectively positioned at the left side and the right side of the mixing cavity 132. The hot water channel 136 penetrates the first annular wall 135, and a hot water inlet 1361 is formed at the top end thereof, which is opened at the side wall of the lower chamber 131. Be equipped with on the lateral wall of cold water course 137 with external intercommunication cross water mouth 1371, when valve 200 installs in the play water installation and uses, the outer wall of lower casing 13 forms the water channel that crosses water mouth 1371 and cold water inlet 134 with the inner wall of play water installation, and after cold water got into cold water course 137 from the diapire of lower casing 13, in the valve was got into to water mouth 1371, water channel and cold water inlet 134 in proper order.

As shown in fig. 2, 4 and 5, the external threads of the upper housing 12 and the internal threads of the lower housing 13 are screw-fitted, and the upper chamber 121 and the lower chamber 131 together form the valve chamber 11 having an open top. The end surface of the top end of the mixing chamber 132 forms a second abutment 1321. The first annular wall 135 forms a fourth limit face 1351 facing the upper housing 12. The bottom wall of the upper housing 12 forms a third abutment 122.

As shown in fig. 1 and 2, the driving member 2 extends along the extending direction of the first axis A1, and is provided with a spiral cavity 21 opening toward the sliding member 4, i.e., the driving member 2 is provided with a spiral cavity 21 opening at the bottom end face thereof, and the inner wall of the spiral cavity 21 is provided with internal threads. The bottom end of the driving member 2 extends into the valve chamber 11 from the opening at the top end of the valve chamber 11 and is rotatably connected with the inner wall of the valve chamber 11 about the first axis A1, and the spiral chamber 21 is located in the valve chamber 11. The driving piece 2 is also in sealing fit with the inner wall of the valve cavity 11, so that water leakage is avoided. The top end of the driving piece 2 is positioned outside the valve cavity 11 and is provided with an annular groove which is opened on the side wall, and the position of the operating end, which is close to the top end face of the valve cavity 11. The spiral cavity 21 communicates with the cold water inlet 134.

As shown in fig. 1 and 2, the E-shaped clamp spring 3 is clamped on the ring groove of the driving member 2, the upper wall abuts against the driving member 2, and the lower wall abuts against the end surface of the top end of the valve body 1, so that the driving member 2 is limited in the extending direction of the first axis A1 and cannot move along the extending direction of the first axis A1.

As shown in fig. 3, 4 and 5, the sliding member 4 is disposed in the valve cavity 11, and is screwed with the driving member 2 and is in rotation-stopping fit with the valve body 1, so that the driving member 2 drives the sliding member to slide reciprocally along the first axis A1. The slider 4 is provided with a first cavity 43 open facing away from the driving member 2, and the bottom end is provided with a first abutment 412 and a first stop face 413. A fifth limiting surface 421 facing the driving member 2 is provided in the first chamber 43. The sliding part 4 extends into the spiral cavity 21 to be in spiral fit with the driving part 2.

Further, as shown in fig. 1, 2, 3, 5, the slider 4 includes a screw 41 and a clip 42. The screw 41 is screw-coupled to the driving member 2, and the screw 41 is provided with a second chamber and a mounting slot 411, the mounting slot 411 being opened to a chamber wall of the second chamber. The clamping piece 42 is arranged in the mounting slot 411 and partially exposes the mounting slot 411 and forms a first cavity 43 with the inner wall of the second cavity above the mounting slot 411, and the fifth limiting surface 421 is arranged on the clamping piece 42. Specifically, the screw 41 extends in the extending direction of the first axis A1, and an outer wall thereof is provided with an external thread screwed with an internal thread of the driving member 2. The bottom wall of the screw 41 forms a first abutment 412. The screw 41 is provided with a second cavity with an opening at the bottom end, the wall of the second cavity close to the bottom end is provided with a mounting groove 411, and the second cavity is provided with a first limiting surface 413 below the mounting groove 411. The clamping piece 42 is a clamping spring, and is installed in the installation slot 411, and a part of the clamping piece 42 exposed out of the installation slot 411 is enclosed with the inner wall of the second cavity above the installation slot 411 to form a first cavity 43. The surface of the clamping member 42 facing the driving member forms a fifth limiting surface 421. In the present embodiment, the slider 4 is provided separately to include the screw 41 and the catch 42, and the fifth restricting surface 421 is provided on the catch 42. The clamping piece 42 can be detached, so that the transmission piece 5 and the sliding piece 4 can be conveniently installed and detached.

As shown in fig. 1, 2 and 3, the transmission member 5 is disposed in the valve chamber 11 at an end of the slider 4 facing away from the driving member 2. The transmission member 5 extends along the extending direction of the first axis A1, and one end thereof extends into the first cavity 43 and is provided with a sixth limiting surface 51 adapted to abut against the fifth limiting surface 421. The transmission member 5 is provided with a groove 52 opening at the bottom end face thereof below the sixth limiting surface 51. In this embodiment, the transmission member 5 is disposed in the first cavity 43, one end of the transmission member is limited by the sixth limiting surface 51 being adapted to abut against the fifth limiting surface 421, and the other end of the transmission member is limited by the first elastic member 6. The arrangement is such that the transmission member 5 can move together with the sliding member 4 and can slide relatively with the sliding member 4, so that after closing a hot water gap described below, the sliding member 4 can move relatively with respect to the transmission member 5 to close a cold water gap described below.

As shown in fig. 2, both ends of the first elastic member 6 act on the slider 4 and the transmission member 5, respectively. Specifically, the first elastic member 6 is disposed in the first cavity 43, and two ends of the first elastic member respectively abut against the sliding member 4 and the driving member 5, and always urge the driving member 5 toward a direction abutting against the fifth limiting surface 421. Specifically, the two ends of the first elastic member 6 respectively abut against the screw 41 and the transmission member 5.

As shown in fig. 2 and 4, the temperature sensing element 7 is located at one end of the transmission element 5 away from the first elastic element 6, and is provided with a telescopic portion 71 which is suitable for being abutted against the transmission element 5 and has a length positively correlated with the water temperature of the water outlet 133. Specifically, the temperature sensing element 7 extends along the extending direction of the first axis A1, the top end thereof forms the telescopic portion 71, and the end far from the telescopic portion 71 extends into the mixing chamber 132 for sensing the water temperature so that the length of the telescopic portion 71 varies according to the water temperature. The telescopic part 71 of the temperature sensing element 7 is suitable for being placed into the groove 52 of the transmission element 5 and is abutted with the bottom wall of the groove 52. The middle part of the temperature sensing piece 7 is provided with external threads, and the first wall 72 facing the water outlet 133 is arranged below the external threads of the temperature sensing piece 7.

As shown in fig. 2, 3 and 6, the sealing member 8 is disposed in the valve cavity 11 and fixedly connected with the temperature sensing member 7, one end of the sealing member is suitable for abutting against or disengaging from the sliding member 4 to close or open the cold water gap, and the other end is suitable for abutting against or disengaging from the valve body 1 to close or open the hot water gap. Thus, the gap between the end surfaces of the slider 4 and the seal 8 facing one end of the slider 4 forms a cold water gap, and the gap between the end surfaces of the valve body 1 and the other end of the seal 8 forms a hot water gap. The cold water gap communicates with the cold water inlet 134 and the water outlet 133, respectively, the hot water gap communicates with the hot water inlet 1361 and the water outlet 133, respectively, and the hot water gap also communicates with the mixing chamber 132. The sealing element 8 is sleeved outside the temperature sensing element 7 and fixedly connected with the temperature sensing element 7, a water passing channel 2001 communicated with the mixing cavity is further formed between the inner wall of the sealing element 8 and the outer wall of the temperature sensing element 7, and a cold water gap is communicated with the water passing channel 2001.

As shown in fig. 3 and 5, the end of the seal 8 facing the slider 4 is provided with a first seal portion 82, and the end thereof remote from the slider 4 is provided with a second seal portion 83. The first seal 82 and the second seal 83 are each made of a flexible material and are adapted to deform when abutted. The first abutting portion 412 of the slider 4 faces the first sealing portion 82, and the first abutting portion 412 is adapted to abut against or disengage from the first sealing portion 82 to close or open the cold water gap, so that the gap between the first abutting portion 412 and the first sealing portion 82 forms the cold water gap. The second abutment 1321 on the valve body 1 faces the second sealing portion 83, and the second abutment 1321 is adapted to abut against or disengage from the second sealing portion 83 to close or open the hot water gap, so that the gap between the second abutment 1321 and the second sealing portion 83 forms the hot water gap. The first sealing portion 82 is further adapted to abut against or disengage from a third abutment 122 on the valve body 1 to open or close the communication of the cold water inlet 134 with the cold water gap. When the driving tool 2 is operated to move the slider 4 to the water closing position, the first abutting portion 412 abuts against the first sealing portion 82 to close the cold water gap, and the third abutting portion 122 is away from the first sealing portion 82. In this way, when the driving element 2 is operated to move the slider 4 toward the boiled water position and the first abutting portion 412 is disengaged from the first sealing portion 82 to open the cold water gap, the third abutting portion 122 is provided on the valve body 1 so as not to move, and the third abutting portion is still away from the first sealing portion 82 so as not to affect the communication between the cold water and the cold water gap. When the slider 4 is slid toward the boiled water position to the position where the cold water gap is maximized, the third abutting portion 122 is located between the first abutting portion 412 and the first sealing portion 82. The purpose of this is that the valve 200 may experience a sudden loss of hot water supply during use, when the water temperature is suddenly reduced. The expansion and contraction portion 71 of the temperature sensor 7 is shortened, and the seal 8 moves toward the first contact portion 412 by the second elastic member 9, thereby reducing the cold water gap. Since the third abutting portion 122 is located between the first abutting portion 412 and the first sealing portion 82 when the cold water gap is maximum, when the first abutting portion 412 is further away from the first sealing portion 82 than the third abutting portion 122, the cold water inlet 134 can be quickly closed by abutting the third abutting portion 122 against the first sealing portion 82 so that the cold water inlet 134 cannot communicate with the cold water gap.

In this embodiment, since the first sealing portion 82 and the second sealing portion 83 are made of flexible materials, the first abutting portion 412 and the third abutting portion 122 are opposite to the first sealing portion 82, and when the second abutting portion 1321 abuts against the second sealing portion 83, the sealing effect is better, and water leakage is prevented.

As shown in fig. 5 and 6, the seal 8 is provided with an abutment surface facing the transmission member 5 and a second limit surface 8122 adapted to the first limit surface 413. When the first limiting surface 413 abuts against the second limiting surface 8122, the first abutting portion 412 cannot continue to displace toward the first sealing portion 82, so that the first sealing portion 82 is prevented from being excessively deformed, and the service life of the first seal 8 is prevented from being affected. The end of the sealing element 8 facing away from the slider 4 is provided with a third limit surface 8141 facing away from the slider 4, the third limit surface 8141 being adapted to a fourth limit surface 1351 on the valve body 1. When the third limiting surface 8141 abuts against the fourth limiting surface 1351, the second abutting portion 1321 cannot continue to displace toward the second sealing portion 83, so as to prevent the second sealing portion 83 from being excessively deformed, and thus the service life of the second sealing portion 83 is prevented from being affected.

Specifically, as shown in fig. 3, 5, 6, the seal 8 includes a seal body 81, a first seal portion 82, and a second seal portion 83. The sealing member body 81 extends along the extending direction of the first axis A1, is sleeved outside the temperature sensing member 7, the bottom end of the sealing member body is in threaded connection with the external thread in the middle of the temperature sensing member 7, and the inner wall of the sealing member body 81 and the outer wall of the temperature sensing member 7 enclose to form a water channel 2001. The bottom end of the sealing member body 81 is further provided with a water passing hole 8131. The top end of the water channel 2001 is communicated with the cold water gap, and the bottom end is communicated with the mixing cavity 132 through a water passing hole 8131. The seal body 81 is provided with a second stopper surface 8122 at one end facing the slider 4 and a protrusion 811 extending toward the slider 4, the protrusion 811 forming an abutment surface toward the end surface of the slider 4. In this embodiment, a plurality of projections 811 are provided and are provided around the opening of the top end of the water passage 2001. The intervals between the projections 811 ensure that the cold water gap can communicate with the water passage 2001. The seal body 81 is provided at both ends thereof with a first groove 815 and a second groove 816, respectively. The first slot 815 opens toward the first abutment 412 and the second slot 816 opens toward the second abutment 1321. The first seal 82 and the second seal 83 are sealing rings that fit into the first groove 815 and the second groove 816, respectively. The first seal 82 is disposed in the first groove 815 and the second seal 83 is disposed in the second groove 816. In this embodiment, the first groove 815 and the second groove 816 are provided on the seal member body 81 to mount the first seal portion 82 and the second seal portion 83, so that the seal member body 81 can be made of a material having a better rigidity than the first seal portion 82 and the second seal portion 83, and the performance requirement in use is satisfied.

In actual use, as shown in fig. 3, 5, and 6, the seal body 81 includes a protrusion 811, a first body 812, a second body 813, and a third body 814 that are integrally connected. The first body 812 extends along the extending direction of the first axis A1, and is provided with an inner cavity with two open ends; an external thread is provided on the outer wall of the first body 812. The end surface of the top end of the first body 812 is provided with a plurality of bosses 8121 along the circumferential direction, and the upper end surface of the boss 8121 forms a second limiting surface 8122. Each protrusion 811 extends from an upper end surface of each boss 8121 toward the slider 4.

As shown in fig. 3, 5 and 6, the second body 813 extends along the extending direction of the first axis A1 and is disposed in an inner cavity with two open ends. The first body 812 extends into the inner cavity of the second body 813 and is screwed with the cavity wall of the inner cavity of the second body 813. The first body 812 and the second body 813 together enclose a first groove 815. The groove wall of the first groove 815 is provided with a first drop-preventing surface 8151 facing away from the opening of the first groove 815, and the first drop-preventing surface 8151 can prevent the first sealing portion 82 from being separated from the first groove 815. The middle part of the bottom end of the second body 813 is in threaded connection with the external thread of the middle part of the temperature sensing piece 7, and a water channel 2001 is formed between the inner walls of the first body 812 and the second body 813 and the outer wall of the temperature sensing piece 7. The bottom end of the second body 813 is further provided with a plurality of water holes 8131, and each water hole 8131 is arranged around the temperature sensing element 7.

As shown in fig. 3, 5 and 6, the third body 814 is sleeved on the lower end of the second body 813 and is screwed with the second body 813. The third body 814 and the second body 813 enclose a second groove 816 in a ring shape, and a groove wall of the second groove 816 is provided with a second anti-drop surface 8161 facing away from the opening of the second groove 816, and the second anti-drop surface 8161 can prevent the second sealing portion 83 from being separated from the second groove 816.

The bottom wall of the third body 814 forms a third limiting surface 8141.

As shown in fig. 4, the second elastic member 9 has one end acting on the temperature sensing member 7 or the sealing member 8 and the other end acting on the valve body 1. The second elastic member 9 is sleeved on the temperature sensing member 7 and is located in the mixing cavity 132. The second elastic member 9 has one end abutting against the first wall 72 on the temperature sensing member 7 and the other end abutting against the bottom wall of the mixing chamber 132.

As shown in fig. 1 and 2, the first filter screen 10 is mounted on the valve body 1 to filter the water flow entering the cold water inlet 134. Specifically, the first filter screen 10 is annular, is sleeved outside the lower shell 13, shields the cold water inlet 134 to realize filtration, prevents the valve 200 from being blocked, and prolongs the service life.

As shown in fig. 1 and 2, a second filter 100 is installed on the valve body 1 to filter the water flow entering the hot water inlet 1361. Specifically, the second filter 100 is installed at the water inlet end of the hot water channel 136, so that the water flow entering the hot water inlet 1361 is filtered, preventing the valve 200 from being blocked, and increasing the service life.

The valve 200 of the present embodiment, when installed:

as shown in fig. 1 to 6, first, the first elastic member 6 is installed in the second cavity of the screw 41 and abuts against the bottom wall of the second cavity. Then, the transmission piece 5 is extended into the second cavity to press the first elastic piece 6. Then, the clip 42 is mounted in the mounting slot 411 of the screw 41, so that the transmission 5 is restrained on the screw 41.

After that, the first seal portion 82 and the second seal portion 83 are mounted at the corresponding positions of the upper end and the lower end of the second body 813, respectively. Then, the first body 812 and the third body 814 are screwed to the second body 813, respectively, and the first sealing portion 82 and the second sealing portion 83 are fixed in the first groove 815 and the second groove 816. Then, the seal 8 is screwed with the temperature sensing member 7. Next, the driving element 2 is mounted on the upper housing 12 by means of the E-shaped snap spring 3. The mounted screw 41, first elastic member 6 and transmission member 5 are then screwed together with the driving member 2. Thereafter, the second elastic member 9 is placed in the mixing chamber 132 and abuts against the bottom wall of the mixing chamber 132. Then, the mounted sealing member 8 and temperature sensing member 7 are placed in the lower chamber 131 of the lower housing 13, and the second elastic member 9 is pressed. After that, the upper case 12 and the lower case 13 are screwed together. Finally, the first filter screen 10 and the second filter screen 100 are mounted on the lower housing 13, and the mounting is completed. After the valve 200 is installed, the mixing chamber 132 is located at the end of the sealing member 8 remote from the transmission member 5.

The valve 200 of the present embodiment, in use:

as shown in fig. 2, in the initial state, the valve 200 is in the water-off state, the first contact portion 412 on the screw 41 contacts the first seal portion 82, and the cold water gap is closed. A space is left between the third abutting portion 122 on the valve body 1 and the first sealing portion 82. The sixth limiting surface 51 on the transmission member 5 is located above the fifth limiting surface 421 on the clamping member 42, and the transmission member 5 abuts against the abutting surface. The second contact portion 1321 of the valve body 1 contacts the second seal portion 83, and the hot water gap is closed.

As shown in fig. 2 and 3, in the initial state, the driving element 2 is rotated to cause the driving element 2 to drive the screw 41 to slide upward, so that the screw is separated from the contact with the first seal 82, and the cold water gap is opened. Since the elastic force of the first elastic member 6 is greater than that of the second elastic member 9, the second elastic member 9 is insufficient to push the sealing member 8 and the sliding member 4 to slide upward at this time, and thus the hot water gap is still in a closed state. The valve 200 is now in a state of full cold water.

Continuing to rotate the driving piece 2, the driving piece 2 drives the screw 41 to slide upwards, and when the fifth limiting surface 421 on the clamping piece 42 is abutted with the sixth limiting surface 51 on the driving piece 5, the driving piece 5 moves upwards together with the screw 41 and is separated from abutting with the abutting surface. When the driving member 2 is rotated continuously, the second elastic member 9 acts, the hot water gap is opened gradually under the action of the second elastic member 9, and cold water enters the mixing chamber 132 from the cold water gap through the water channel 2001; hot water enters the mixing chamber 132 from the hot water gap and is mixed with cold water before exiting the water outlet 133. Due to the fact that the mixing cavity 132 is arranged, hot water and cold water can be mixed more evenly in the mixing cavity 132, the water temperature sensed by the temperature sensing piece 7 is also more accurate, and the temperature sensing piece 7 is more accurate in realizing constant temperature adjustment.

When the driving member 2 is rotated to the limit position, the hot water gap is opened to the maximum, and the valve 200 is in a state of discharging the full hot water; the third abutting portion 122 abuts against the first sealing portion 82 to close the communication of the cold water inlet 134 with the cold water gap.

The driving piece 2 is reversely rotated, so that the driving piece 2 moves along the water closing position, when the driving piece 2 rotates along the water closing position, the sliding piece 4 drives the transmission piece 5 to push the telescopic part 71 to drive the temperature sensing piece 7 and the sealing piece 8 to overcome the elastic force of the second elastic piece 9 so as to reduce the hot water gap; until the transmission piece 5 abuts against the abutting surface, the transmission piece 5 pushes against the abutting surface to drive the temperature sensing piece 7 and the sealing piece 8 to move to close the hot water gap; continuing to rotate the driving member 2, the sliding member 4 slides towards the sealing member 8 against the action of the first elastic member 6 closing the cold water gap. Specifically, the driving member 2 drives the screw 41 to move downwards, and simultaneously drives the driving member 5 to move downwards, and the driving member 5 pushes the telescopic part 71 of the temperature sensing member 7 to move the sealing member 8 and the temperature sensing member 7 downwards, so that the hot water gap is reduced. Until the transmission member 5 moves to abut against the abutting surface, the transmission member 5 drives the sealing member 8 and the temperature sensing member 7 to move downward by pushing against the abutting surface, and the hot water gap is closed. At this time, as shown in fig. 4, the valve 200 is in a state of full cold water. Continuing to rotate the driving piece 2 in the reverse direction, the transmission piece 5 is limited against the abutting surface, so that the downward movement cannot be continued; the screw 41 moves downward against the action of the first elastic member 6 to abut against the first seal 82, closing the cold water gap.

As shown in fig. 2 to 4, the constant temperature state and safety of the valve 200 are explained as follows:

when the valve 200 is used, if the amount of cold water intake increases, the water temperature in the mixing chamber 132 decreases, and the expansion and contraction portion 71 of the temperature sensing element 7 shortens. At this time, since the expansion and contraction portion 71 does not abut against the transmission member 5, the restoring force of the second elastic member 9 acts, so that the hot water gap becomes large, the cold water gap becomes small, and the water temperature is kept constant.

When the valve 200 is used, if the inflow amount of hot water increases, the water temperature in the mixing chamber 132 increases, and the expansion and contraction portion 71 of the temperature sensing element 7 expands. Because the telescopic part 71 of the temperature sensing piece 7 is propped against the transmission piece 5, the telescopic part is subjected to the reaction force of the transmission piece 5 to the telescopic part when being extended, the sealing piece 8 is driven to move downwards and compress the second elastic piece 9, so that the hot water gap is reduced, the cold water gap is increased, and the water temperature is kept constant.

When the valve 200 is in use, if the cold water is suddenly supplied, the temperature of the water in the mixing chamber 132 increases, and the expansion and contraction portion 71 of the temperature sensing element 7 expands. Since the telescopic part 71 of the temperature sensing element 7 abuts against the transmission element 5, the telescopic part is subjected to the reaction force of the transmission element 5 to the telescopic part during extension, so that the sealing element 8 is driven to move downwards and compress the second elastic element 9, and the hot water gap is closed. The valve 200 is in a non-water-out state at this time due to the cold water outage.

When the valve 200 is used, if the hot water is suddenly supplied, the temperature of the water in the mixing chamber 132 decreases, and the expansion and contraction portion 71 of the temperature sensing element 7 shortens. At this time, since the expansion and contraction portion 71 does not abut against the transmission member 5, the restoring force of the second elastic member 9 acts, so that the hot water gap is increased, and the cold water gap is closed. The valve 200 is in a non-water-out state at this time due to the hot water outage.

When the existing constant temperature switch valve 200 is used for closing water, the rotary driving piece 2 rotates towards the water closing position to drive the sliding piece 4 to slide, and the sliding piece 4 drives the transmission piece 5 to push the telescopic part 71 of the sliding piece 7 so that the temperature sensing piece 7 and the sealing piece 8 overcome the elastic force of the second elastic piece 9 to move, so that a hot water gap is closed; continuing to rotate the driving member 2, the sliding member 4 slides towards the sealing member 8 against the action of the first elastic member 6 closing the cold water gap. Although the temperature is gradually changed during the closing of the hot water in this way, the user increases the angle of the user's rotation of the driving member 2 due to less use of the partial temperature interval.

In the present embodiment, by providing the abutting surface on the sealing member 8, during the water closing process, the sliding member 4 drives the driving member 5 to push the telescopic portion 71 to drive the temperature sensing member 7 and the sealing member 8 to move against the elastic force of the second elastic member 9, so as to reduce the hot water gap; when the transmission piece 5 abuts against the abutting surface, the transmission piece 5 drives the temperature sensing piece 7 and the sealing piece 8 to move through the abutting surface, and the hot water gap is quickly closed. Continuing to rotate the driving member 2, the sliding member 4 slides towards the sealing member 8 against the action of the first elastic member 6 closing the cold water gap. Since the expansion and contraction portion 71 gradually shortens as the temperature decreases in closing the hot water; the position of the contact surface is not affected by temperature. Therefore, the driving member 5 closes the hot water by abutting the telescopic portion 71 and then abutting the abutting surface, so that the rotation angle of the driving member 2 becomes smaller in the process of closing the hot water gap, the overall rotation angle of the driving member 2 is reduced when the temperature of the driving member 2 is adjusted, and the user experience is increased. Meanwhile, the constant temperature interval from the abutting face of the transmission piece 5 to the closing of the hot water gap is also canceled, and the canceled constant temperature interval can be adjusted according to the need by changing the position of the abutting face in actual use, so that less constant temperature interval for users is canceled. Also, in the valve 200 of the present embodiment, the spiral chamber 21 communicates with the cold water inlet 134. When the cold water gap is filled with water, the sliding part 4 is positioned at one end of the spiral cavity 21 and one end facing the sealing part 8, so that the pressure is more balanced, and the driving part 2 is not influenced by the water pressure to drive the sliding part 4 to move. The foregoing description of the embodiments and description is presented to illustrate the scope of the utility model, but is not to be construed as limiting the scope of the utility model. Modifications, equivalents, and other improvements to the embodiments of the utility model or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the utility model or the teachings of the embodiments, are intended to be included within the scope of the utility model, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.

Claims (10)

1. A valve, characterized in that: comprising

A valve body (1) provided with a valve cavity (11) and a cold water inlet (134), a hot water inlet (1361) and a water outlet (133) which are communicated with the valve cavity (11);

a driving element (2) which is rotatably connected to the valve body (1) about a first axis;

the sliding piece (4) is arranged in the valve cavity (11), is in threaded connection with the driving piece (2) and is in anti-rotation fit with the valve body (1) so as to be driven by the driving piece (2) to slide back and forth along the first axis;

the transmission piece (5) is arranged in the valve cavity (11) and is positioned at one end of the sliding piece (4) away from the driving piece (2);

a first elastic member (6) having both ends acting on the slider (4) and the transmission member (5), respectively;

the temperature sensing piece (7) is positioned at one end of the transmission piece (5) deviating from the first elastic piece (6) and is provided with a telescopic part (71) which is suitable for being propped against the transmission piece (5) and has a length positively related to the water temperature of the water outlet (133);

a sealing element (8) which is arranged in the valve cavity (11) and fixedly connected with the temperature sensing element (7), one end of the sealing element is suitable for abutting against or separating from the sliding element (4) to close or open the cold water gap, and the other end is suitable for abutting against or separating from the valve body (1) to close or open the hot water gap; the cold water gap is respectively communicated with the cold water inlet (134) and the water outlet (133); the hot water gap is respectively communicated with the hot water inlet (1361) and the water outlet (133); the sealing element (8) is also provided with an abutting surface facing the transmission element (5);

A second elastic member (9) having one end acting on the temperature sensing member (7) or the sealing member (8) and the other end acting on the valve body (1);

when the driving piece (2) rotates along the water closing position, the sliding piece (4) drives the transmission piece (5) to push the telescopic part (71) of the temperature sensing piece (7) to drive the temperature sensing piece (7) and the sealing piece (8) to move against the elastic force of the second elastic piece (9) so as to reduce the hot water gap; until the transmission piece (5) abuts against the abutting surface, the transmission piece (5) pushes against the abutting surface to drive the temperature sensing piece (7) and the sealing piece (8) to move so as to close the hot water gap; continuing to rotate the driving member (2), the sliding member (4) slides towards the sealing member (8) against the action of the first elastic member (6) to close the cold water gap.

2. A valve according to claim 1, characterized in that the valve body (1) is further provided with a mixing chamber (132); the mixing chamber (132) is located at the end of the sealing member (8) remote from the transmission member (5); the sealing piece (8) is sleeved outside the temperature sensing piece and fixedly connected with the temperature sensing piece, and a water channel (2001) communicated with the mixing cavity (132) is formed between the inner wall of the sealing piece and the outer wall of the temperature sensing piece; the water outlet (133) is communicated with the mixing cavity (132);

The cold water gap is communicated with the water channel (2001); the hot water gap is in communication with the mixing chamber (132);

one end of the temperature sensing piece (7) far away from the telescopic part (71) stretches into the mixing cavity (132) and is used for sensing water temperature so that the length of the telescopic part (71) changes according to the water temperature.

3. A valve according to claim 1, characterized in that the end of the sealing element (8) facing the sliding element (4) is provided with a first sealing portion (82) and the end thereof remote from the sliding element (4) is provided with a second sealing portion (83); the first sealing part (82) and the second sealing part (83) are made of flexible materials and are suitable for deformation when being abutted;

the bottom end of the sliding piece (4) is provided with a first abutting part (412) facing the first sealing part (82), and the first abutting part (412) is suitable for abutting against or separating from the first sealing part (82) to close or open a cold water gap;

the valve body (1) is provided with a second abutting part (1321) facing the second sealing part (83), and the second abutting part (1321) is suitable for abutting against or separating from the second sealing part (83) to close or open the hot water gap.

4. A valve according to claim 3, wherein the seal (8) further comprises a seal body (81); one end of the seal body (81) facing the slider (4) is provided with a protrusion (811) extending toward the slider (4); the protrusion (811) forms the abutment surface toward an end surface of the slider (4);

A first groove (815) and a second groove (816) are respectively arranged at two ends of the sealing element body (81); the first groove (815) opens towards the first abutment (412); the second groove (816) opens towards the second abutment (1321);

the first seal (82) is disposed within the first groove (815); the second seal (83) is disposed within the second channel (816).

5. A valve according to claim 3, wherein the bottom end of the slider (4) is provided with a first stop surface (413) facing the seal (8); a second limit surface (8122) matched with the first limit surface (413) is arranged on the sealing element (8);

when the first limiting surface (413) is in contact with the second limiting surface (8122), the first contact portion (412) cannot continue to displace toward the first sealing portion (82);

one end of the sealing element (8) facing away from the sliding element (4) is provided with a third limit surface (8141) facing away from the sliding element (4); a fourth limiting surface (1351) which is matched with the third limiting surface (8141) is arranged on the valve body (1);

when the third limit surface (8141) abuts against the fourth limit surface (1351), the second abutment portion (1321) cannot continue to be displaced toward the second sealing portion (83).

6. A valve according to claim 3, wherein the valve body (1) is further provided with a third abutment (122); the first sealing portion (82) is adapted to abut against or disengage from the third abutment portion (122) to open or close communication of the cold water inlet (134) with the cold water gap;

when the first sealing portion (82) abuts against the first abutting portion (412), the third abutting portion (122) is away from the first sealing portion (82);

when the cold water gap is maximum, the third abutment (122) is located between the first abutment (412) and the first seal (82).

7. A valve according to claim 1, wherein the slider (4) is provided with a first cavity (43) open away from the driver (2);

a fifth limiting surface (421) facing the driving piece (2) is arranged in the first cavity (43);

one end of the transmission piece (5) extends into the first cavity (43) and is provided with a sixth limiting surface (51) which is suitable for being in butt joint with the fifth limiting surface (421);

the first elastic piece (6) is arranged in the first cavity (43), two ends of the first elastic piece respectively prop against the sliding piece (4) and the transmission piece (5), and the transmission piece (5) is always pushed against in the direction of propping against the fifth limiting surface (421).

8. A valve according to claim 7, wherein the slider (4) comprises a screw (41) and a clip (42), the screw (41) being in threaded engagement with the driver (2), the screw (41) being provided with a second cavity and a mounting slot (411), the mounting slot (411) opening into a cavity wall of the second cavity; the clamping piece (42) is arranged in the mounting groove (411) and partially exposed out of the mounting groove and the inner wall of the second cavity above the mounting groove to form the first cavity (43), and the fifth limiting surface (421) is arranged on the clamping piece (42); the two ends of the first elastic piece (6) respectively prop against the screw rod (41) and the transmission piece (5).

9. A valve according to claim 1, further comprising a first filter (10) and a second filter (100); the first filter screen (10) is arranged on the valve body (1) and filters water flow entering the cold water inlet (134);

the second filter screen (100) is arranged on the valve body (1) and filters water flow entering the hot water inlet (1361).

10. A valve according to claim 1, wherein the driver (2) is provided with a screw chamber (21) opening towards the slider (4);

the sliding piece (4) stretches into the spiral cavity (21) to be in spiral fit with the driving piece (2), and the spiral cavity (21) is communicated with the cold water inlet (134).