阅读说明：本技术 阀座、锁止结构及防火止回阀 (disk seat, locking structure and fire prevention check valve ) 是由 王启定 曹正祥 于 2018-06-12 设计创作，主要内容包括：本发明涉及一种阀座、锁止结构及防火止回阀,解决了感温元件自动停止工作的问题。阀座,包括设置在阀体上的底板和至少两块设置在所述底板上并由该底板向上延伸的固定板,每块固定板上设有用于穿设连接机构上第一转轴的第一轴孔和用于穿设拨片上第二转轴的第二轴孔,所述阀座还包括用于阻止感温装置随拨片转动的限位装置,所述限位装置设置在其中一块固定板位于所述第二轴孔远离所述第一轴孔一侧的外壁上。(The invention relates to a valve seat, a locking structure and a fireproof check valve, and solves the problem that a temperature sensing element automatically stops working. The valve seat comprises a bottom plate and at least two fixing plates, wherein the bottom plate and the at least two fixing plates are arranged on the valve body, the fixing plates are upwards extended from the bottom plate, a first shaft hole used for penetrating a first rotating shaft on the connecting mechanism and a second shaft hole used for penetrating a second rotating shaft on the shifting piece are formed in each fixing plate, the valve seat further comprises a limiting device used for preventing the temperature sensing device from rotating along with the shifting piece, and the limiting device is arranged on the outer wall of one side of the first shaft hole and is located in one fixing plate.)

1. The valve seat comprises a bottom plate and at least two fixing plates, wherein the bottom plate and the at least two fixing plates are detachably arranged on the valve body, the fixing plates extend upwards from the bottom plate, a first shaft hole used for penetrating a first rotating shaft on the connecting mechanism and a second shaft hole used for penetrating a second rotating shaft on the shifting piece are formed in each fixing plate, the valve seat is characterized by further comprising a limiting device used for preventing the temperature sensing device from rotating along with the shifting piece, and the limiting device is arranged on the outer wall of one side of the first shaft hole and located in one fixing plate, and the second shaft hole is far away from the first shaft hole.

2. The valve seat according to claim 1, wherein the limiting device comprises a limiting block formed by bending the fixing plate outwards, and the limiting block can be used for preventing the temperature sensing device from rotating along with the shifting piece; or the limiting device comprises a limiting block welded on the outer wall of the fixing plate, and the limiting block can be used for preventing the temperature sensing device from rotating along with the shifting piece; or the limiting device comprises a limiting screw in threaded connection with the fixing plate, and the limiting screw can be used for preventing the temperature sensing device from rotating along with the shifting piece; or the limiting device comprises a limiting bolt in threaded connection with the fixing plate and a limiting nut sleeved on the rod part of the limiting bolt, and the limiting bolt can be used for preventing the temperature sensing device from rotating along with the shifting piece.

3. The valve seat according to claim 2, wherein the stopper is provided with a stopper surface capable of abutting against the temperature sensing device.

4. the valve seat of claim 3, wherein said stop surface is sloped upwardly from a side adjacent said first axial opening to a side remote from said first axial opening.

5. The valve seat of claim 3, wherein the width of the limiting surface is greater than or equal to the width of the second metal sheet of the temperature sensing device.

6. The valve seat of claim 1, wherein the minimum distance between the stop means and the center of the first axial bore is > 19 mm.

7. The locking structure comprises a valve seat, a connecting mechanism, a shifting piece, an elastic element and a temperature sensing element, wherein the connecting mechanism and the shifting piece are rotatably arranged on the valve seat, the temperature sensing element comprises a first metal sheet, a second metal sheet and brazing filler metal, the first metal sheet and the second metal sheet are fixedly arranged on the valve seat, the brazing filler metal is used for connecting the first metal sheet and the second metal sheet, the elastic element acts on the shifting piece to keep the shifting piece to extrude one side of the second metal sheet, the locking structure is characterized in that the valve seat is the valve seat according to one of claims 1 to 6, and when the shifting piece extrudes one side of the second metal sheet, the other side of the second metal sheet abuts against the limiting device.

8. The fireproof check valve comprises a valve body with an exhaust port, a valve plate and a locking structure, wherein the locking structure is connected with the valve plate and the valve body and used for driving the valve plate to close the exhaust port, and the fireproof check valve is characterized in that the locking structure is the locking structure in claim 7.

9. The fire check valve of claim 8, further comprising a rubber ring disposed on an outer wall of the valve plate, wherein an outer contour of the valve plate and an outer contour of the rubber ring respectively abut against the valve body when the valve plate closes the exhaust port.

10. The fire resistant check valve of claim 8, wherein the valve body comprises a valve core having the exhaust port and a mounting panel disposed on the valve core, the fire resistant check valve further comprises an adjusting rod and a reed, one end of the reed is connected to the valve body, one end of the adjusting rod is located in the valve core, the other end of the adjusting rod penetrates through the valve core and abuts against the other end of the reed, and the adjusting rod axially reciprocates to adjust a spacing distance between the other end of the reed and the mounting panel; or the fire prevention check valve still includes action bars and clamp splice, action bars one end runs through extend to behind the installation panel outside the valve body, the clamp splice sets up the other end of action bars, the action bars orders about clamp splice reciprocating motion, in order to adjust the clamp splice with the interval distance between the installation panel.

Technical Field

The invention relates to a valve seat, a locking structure and a fireproof check valve.

Background

The existing part of the fireproof check valve is provided with a locking structure, the locking structure comprises a valve seat, a connecting rod, a shifting piece, a temperature sensing element and an elastic element, the connecting rod and the shifting piece are rotatably connected with the valve seat, the temperature sensing element is fixedly connected with the valve seat, one end of the elastic element is fixedly connected with the valve seat, and the other end of the elastic element is connected with the shifting piece and drives the shifting piece to abut against the temperature sensing element.

The outer wall of the valve seat is provided with a limiting block, the temperature sensing element comprises a first metal piece, a second metal piece and brazing filler metal used for connecting the first metal piece and the second metal piece, the other end of the elastic element is connected with the plectrum and drives the plectrum to abut against the temperature sensing element, the limiting block provides first thrust for the first metal piece, the plectrum provides second thrust for the second metal piece, and the direction of the first thrust is different from the direction of the second thrust. When the direction of the first thrust is different from that of the second thrust, the temperature sensing element is simultaneously acted by the thrusts in the two directions to provide a torsion force which always rotates around the brazing filler metal for the second metal piece.

after the valve is used for a period of time, the acting force of the brazing filler metal used for connecting the first metal piece and the second metal piece can be gradually weakened until the acting force is smaller than the torsion force, and after the acting force of the brazing filler metal used for connecting the first metal piece and the second metal piece can be gradually weakened and smaller than the torsion force, the second metal piece is separated from the first metal piece, and the temperature sensing element stops working.

Disclosure of Invention

The invention aims to solve the problem of providing a valve seat, a locking structure and a fireproof check valve, which can prevent a temperature sensing element from automatically stopping working.

In order to solve the above problems, the present invention provides the following technical solutions:

The valve seat comprises a bottom plate and at least two fixing plates, wherein the bottom plate and the at least two fixing plates are detachably arranged on the valve body, the fixing plates are upwards extended from the bottom plate, a first shaft hole used for penetrating a first rotating shaft on the connecting mechanism and a second shaft hole used for penetrating a second rotating shaft on the shifting piece are formed in each fixing plate, the valve seat further comprises a limiting device used for preventing the temperature sensing device from rotating along with the shifting piece, and the limiting device is arranged on the outer wall of one side of the first shaft hole and is located in one fixing plate.

Furthermore, the limiting device comprises a limiting block formed by bending the fixing plate outwards, and the limiting block can be used for preventing the temperature sensing device from rotating along with the plectrum; or the limiting device comprises a limiting block welded on the outer wall of the fixing plate, and the limiting block can be used for preventing the temperature sensing device from rotating along with the shifting piece; or the limiting device comprises a limiting screw in threaded connection with the fixing plate, and the limiting screw can be used for preventing the temperature sensing device from rotating along with the shifting piece; or the limiting device comprises a limiting bolt in threaded connection with the fixing plate and a limiting nut sleeved on the rod part of the limiting bolt, and the limiting bolt can be used for preventing the temperature sensing device from rotating along with the shifting piece.

Furthermore, a limiting surface which can be abutted against the temperature sensing device is arranged on the limiting block.

Further, the limiting surface inclines upwards from the side adjacent to the first shaft hole to the side far away from the first shaft hole.

furthermore, the width dimension of the limiting surface is larger than or equal to the width dimension of the second metal sheet on the temperature sensing device.

Further, the minimum distance between the limiting device and the circle center of the first shaft hole is larger than 19 mm.

The locking structure comprises a valve seat, a connecting mechanism, a shifting piece, an elastic element and a temperature sensing element, wherein the connecting mechanism and the shifting piece are rotatably arranged on the valve seat, the temperature sensing element comprises a first metal sheet, a second metal sheet and brazing filler metal, the first metal sheet and the brazing filler metal are fixedly arranged on the valve seat, the brazing filler metal is used for connecting the first metal sheet and the second metal sheet, the elastic element acts on the shifting piece to keep the shifting piece to extrude one side of the second metal sheet, the valve seat is of any one of the technical schemes, and when the shifting piece extrudes one side of the second metal sheet, the other side of the second metal sheet abuts against the limiting device.

The fireproof check valve comprises a valve body with an exhaust port, a valve plate and a locking structure, wherein the locking structure is connected with the valve plate and used for driving the valve plate to close the exhaust port, and the locking structure is any one of the technical schemes.

Furthermore, the fireproof check valve further comprises a rubber ring arranged on the outer wall of the valve plate, and when the valve plate closes the exhaust port, the outer contour of the valve plate and the outer contour of the rubber ring respectively abut against the valve body.

Furthermore, the valve body comprises a valve core with the exhaust port and an installation panel arranged on the valve core, the fireproof check valve further comprises an adjusting rod and a reed, one end of the reed is connected to the valve body, one end of the adjusting rod is positioned in the valve core, the other end of the adjusting rod penetrates through the valve core and then abuts against the other end of the reed, and the adjusting rod axially reciprocates to adjust the spacing distance between the other end of the reed and the installation panel; or the fire prevention check valve still includes action bars and clamp splice, action bars one end runs through extend to behind the installation panel outside the valve body, the clamp splice sets up the other end of action bars, the action bars orders about clamp splice reciprocating motion, in order to adjust the clamp splice with the interval distance between the installation panel.

The invention has the beneficial effects that:

According to the invention, the limiting device is arranged on the outer wall of one fixing plate, which is positioned on one side of the second shaft hole, which is far away from the first shaft hole, and when the limiting device is arranged on the outer wall of one fixing plate, which is positioned on one side of the second shaft hole, which is far away from the first shaft hole, the elastic element acts on the shifting sheet so as to clamp the second metal sheet between the shifting sheet and the limiting device. By adopting the design, the torsion force applied to the brazing filler metal is reduced or even eliminated.

Drawings

FIG. 1 is a perspective view of a locking structure in a second embodiment of the present invention;

FIG. 2 is a perspective view of a portion of the coupling mechanism in accordance with a second embodiment of the present invention;

FIG. 3 is a perspective view of a second stopping rotor according to an embodiment of the present invention;

FIG. 4 is a perspective view of a locking structure (when the temperature sensing element is in operation) according to a second embodiment of the present invention;

FIG. 5 is a left side view of a partial locking structure in the second embodiment of the present invention (when the temperature sensing element is in operation);

FIG. 6 is a perspective view of a locking structure (when the temperature sensing element stops working) according to a second embodiment of the present invention;

FIG. 7 is a left side view of a partial locking structure in the second embodiment of the present invention (when the temperature sensing element stops working);

FIG. 8 is a front view of a locking structure in a second embodiment of the present invention;

FIG. 9 is a cross-sectional view taken at A-A of FIG. 8;

FIG. 10 is a perspective view of a valve seat in accordance with a first embodiment of the present invention;

FIG. 11 is a front view of a fire check valve in accordance with a third embodiment of the present invention;

FIG. 12 is a sectional view taken at B-B in the third embodiment of the present invention;

FIG. 13 is a sectional view taken at C-C in the third embodiment of the present invention.

Detailed Description

the technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.