Temperature control valve with flameout protection function

Abstract

A temperature control valve with a flameout protection function comprises a valve cover, a valve rod, a spring, a limiting plate, a pressing plate, a valve body, a valve element, an ejector rod, an ejector rod spring, an electromagnetic valve assembly, a temperature control valve body, a temperature control valve rod, a temperature control valve element, a spring seat plate, a temperature control spring and a temperature sensing head. The ejector rod penetrates through the ejector rod spring and the ejector rod channel, extends into the electromagnetic valve element base and is matched with an electromagnetic valve element of the electromagnetic valve assembly. The head part of the external thread is fixed with the fixing hole, the temperature control valve core is fixed with the valve core fixing part, and the rod part of the external thread is screwed with the internal thread cavity; the spring seat plate is attached to the temperature control valve element, the temperature control spring is matched with the spring seat plate and the spring seat part, and the temperature control valve body and the temperature control valve element cavity are buckled and sealed. The arrangement of the electromagnetic valve assembly has a flame-out protection function; due to the arrangement of the ever-burning fire, the gas is ignited quickly.

Description

Technical Field

[0001] The utility model relates to a temperature control valve. Background Art

[0002] In the current prior art, Chinese Patent No. 202110205627.0, a temperature control valve for an oven, includes a valve cover, a valve stem, a pressure spring, a retaining disc with a radial stop plate, a valve core and a valve body. It also includes a temperature control valve stem, a pin rod, a temperature control valve core, a temperature control valve body, a temperature sensing head, a spring and a spring seat plate. The air outlet cavity of the valve core is located in the temperature control valve core seat of the valve body; the internal thread cavity passes through the temperature control valve core connection hole, the valve core seat plate and fits with the counterbore. The spring seat plate is in contact with the temperature control valve core. The external thread head of the temperature sensing head is screwed with the internal thread cavity. The external threaded rod part of the temperature sensing head passes through the connection hole of the temperature control valve body and is screwed with a nut; the spring cooperates with the spring seat plate and the spring seat part on the temperature sensing head; the connecting rod is inserted into the air outlet cavity of the valve core, the pin rod cooperates with the guide groove, and the connecting rod slides in the air outlet cavity. The problem is that there is no pilot flame and flameout protection. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a temperature control valve with flameout protection, which has the characteristics of pilot flame and flameout protection.

[0004] The utility model is realized as follows: A temperature control valve with flameout protection, which is characterized in that it includes a valve cover, a valve stem, a spring, a limit plate, a pressing plate, a valve body, a valve core, a push rod, a push rod spring, an electromagnetic valve assembly, a temperature control valve body, a temperature control valve stem, a temperature control valve core, a spring seat plate, a temperature control spring and a temperature sensing head.

[0005] The valve cover includes a valve stem channel and a pressing plate cavity. The valve stem includes a flange and a waist-shaped head, and the waist-shaped head is provided with a fixed rotation part and a driving part.

[0006] The valve body includes a valve core cavity, an air outlet cavity provided at the end of the valve core cavity, a temperature control valve core cavity and a temperature control valve core seat, a pilot flame outlet pipe, a pilot flame inlet channel, a small fire airway, an electromagnetic valve cavity, a push rod channel, a transverse airway and an air inlet joint. The air outlet cavity of the small fire airway is communicated with the temperature control valve core cavity, and the pilot flame inlet channel is communicated with the valve core cavity and the transverse airway.

[0007] The valve core includes a driving sleeve, a control part and an air outlet part. The control part is provided with an air regulating hole group and a pilot flame air guiding groove; the air outlet part is provided with an axial driving groove.

[0008] The temperature control valve body includes a main outlet pipe and a fixing hole; the temperature control valve stem includes a connecting rod part, a valve core fixing part and an internal thread cavity; the temperature sensing head includes an external thread head, a spring seat part and an external threaded rod part.

[0009] The valve stem is in rotational fit with the valve stem passage, the flange is in rotational fit with the counterbore, the nut is screwed with the driving part to hold the limiting plate and the pressing plate on the fixed rotating part, the control part is in fit with the valve core cavity, and the air outlet part extends into the air outlet cavity; the valve cover is fixed to the valve body, the driving part is inserted into the driving groove of the driving sleeve, and the pressing plate is in sliding fit with the pressing plate cavity; the solenoid valve assembly is arranged in the solenoid valve cavity, and the ejector rod passes through the ejector rod spring and the ejector rod passage to cooperate with the solenoid valve core of the solenoid valve assembly; the external thread head is fixed to the fixing hole, the temperature control valve core is fixed to the valve core fixing part, the external threaded rod part is screwed with the internal thread cavity, the spring seat plate is attached to the temperature control valve core, the temperature control spring cooperates with the spring seat plate and the spring seat part, and the temperature control valve body is buckled and sealed with the temperature control valve core cavity.

[0010] For the described temperature control valve with flameout protection, its special feature lies in that: the limiting plate is provided with an oblong hole and a radial stop plate, and one end of the pressing plate is provided with a circular hole;

[0011] The fixed rotating part passes through the oblong hole and the circular hole; the radial stop plate cooperates with the stop plate inside the valve cover.

[0012] For the described temperature control valve with flameout protection, its special feature lies in that: the ejector rod passage is provided with a sealing cavity,

[0013] It further includes a sealing ring and a gasket,

[0014] The sealing ring is arranged in the sealing cavity, the gasket is arranged on the sealing ring, the ejector rod passes through the gasket and the sealing ring, and the ejector rod spring cooperates with the head of the ejector rod and the gasket.

[0015] For the described temperature control valve with flameout protection, its special feature lies in that: the temperature control valve core includes a connecting hole and a counterbore, and the spring seat plate includes a cavity part with an open end and an annular seat plate;

[0016] It further includes a buffer sealing ring,

[0017] The valve core fixing part is fitted with the counterbore, the buffer sealing ring is arranged in the cavity part and is attached to the temperature control valve core, and the internal thread cavity passes through the buffer sealing ring and the through hole on the cavity part.

[0018] For the described temperature control valve with flameout protection, its special feature lies in that: the valve core cavity, the air outlet cavity, the temperature control valve core cavity and the temperature control valve core seat, the small fire air passage, the solenoid valve cavity, the ejector rod passage and the transverse air passage are in the same plane.

[0019] For the described temperature control valve with flameout protection, its special feature lies in that: the connecting rod part of the temperature control valve stem is provided with a radial driving rod, and the radial driving part is in sliding fit with the axial driving groove.

[0020] For the temperature control valve with flameout protection of the present utility model, the setting of the solenoid valve assembly has the function of flameout protection; the setting of the pilot flame ensures quick ignition of the gas. Brief Description of the Drawings

[0021] Figure 1 is a cross-sectional view of the present utility model.

[0022] Figure 2 is Figure 1 the A-A view of

[0023] Figure 3 is Figure 1 the B-B view of

[0024] Figure 4 is Figure 2 the C-C view of

[0025] Figure 5 is a perspective view of the valve body of the present utility model.

[0026] Figure 6 is one of the exploded perspective views of the present utility model.

[0027] Figure 7 is one of the perspective views of the present utility model.

[0028] Figure 8 is the second perspective view of the present utility model.

[0029] Figure 9 is the second exploded perspective view of the present utility model. Detailed Description of the Preferred Embodiment

[0030] The following describes in detail the embodiments of the present utility model. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Such as Figure 1 , Figure 2As shown in the figure, a temperature control valve with flameout protection includes a valve cover 1, a valve stem 2, a spring 3, a limit plate 4, a pressure plate 5, a valve body 6, a valve core 7, a push rod 8, a push rod spring 81, a solenoid valve assembly 9, a temperature control valve body 10, a temperature control valve stem 11, a temperature control valve core 12, a spring seat plate 13, a temperature control spring 14, and a temperature sensing head 15.

[0033] The valve cover 1 includes a valve stem channel 1A and a pressure plate cavity 1B. A counterbore is provided at one end of the valve stem channel 1A located inside the valve cover 1, and the pressure plate cavity 1B guides the pressure plate 5 to prevent rotation.

[0034] The valve stem 2 includes a flange 21 and a waist-shaped head. A fixed rotation part 22 and a driving part 22 are provided on the waist-shaped head.

[0035] The valve body 6 includes a valve core cavity 61, an air outlet cavity 62 provided at the end of the valve core cavity 61, a temperature control valve core cavity 63 and a temperature control valve core seat 64, a pilot flame outlet pipe 65, a pilot flame inlet passage 66, a small fire airway 67, a solenoid valve cavity 68, a push rod channel 681, a transverse airway 69, and an air inlet joint 60. As Figure 5 、 Figure 6 shown in the figure, the small fire airway 67 communicates with the air outlet cavity 62 and the temperature control valve core cavity 63. The air inlet end 671 of the small fire airway is provided on the air outlet cavity 62, and the air outlet end 672 is provided inside the temperature control valve core cavity 63; the pilot flame inlet passage 66 communicates with the valve core cavity 61 and the transverse airway 69; the transverse passage 69 communicates with the valve core cavity 61 and the solenoid valve cavity 8.

[0036] The valve core 7 includes a driving sleeve 71, a control part 72, and an air outlet part 73. An air regulating hole group 721 and a pilot flame air guiding groove 722 are provided on the control part 72; the end of the air outlet part 73 is open and provided with radial air outlet holes.

[0037] The temperature control valve body 10 includes a main air outlet pipe 101 and a fixing hole 102.

[0038] The temperature control valve stem 11 includes a connecting rod part 111, a valve core fixing part 112, and an internal thread cavity 113.

[0039] The temperature sensing head 15 includes an external thread head 151, a spring seat part 152, and an external threaded rod part 153153.

[0040] The valve stem 2 is rotationally fitted with the valve stem passage 1A, and the flange 21 is rotationally fitted with the counterbore. The nut is screwed with the driving part 22 to hold the limiting plate 4 and the pressing plate 5 on the fixed rotating part 22. The limiting plate rotates with the valve stem, and the pressing plate moves along the axis of the valve stem. The control part 72 is fitted with the valve core cavity 61, and the air outlet part 73 extends into the air outlet cavity 62. The valve cover 1 is fixed to the valve body 6, the driving part 22 is inserted into the driving groove 711 of the driving sleeve 71, and the pressing plate 5 is slidably fitted with the pressing plate cavity 1B. The solenoid valve assembly 9 is arranged in the solenoid valve cavity 68. The ejector rod 8 passes through the ejector rod spring 81 and the ejector rod passage 681 and extends into the solenoid valve core seat 682 and is engaged with the solenoid valve core 7 of the solenoid valve assembly 9. The external thread head 151 is fixed to the fixing hole 102, the temperature control valve core 12 is fixed to the valve core fixing part 112, the external threaded rod part 153 is screwed with the internal thread cavity 113, the connecting rod part 111 and the air outlet part 73 are slidably fitted and prevent the connecting rod part 111 from rotating relative to the valve core. The valve core and the temperature control valve stem rotate together, and the temperature control valve stem moves back and forth relative to the valve core. The spring seat plate 13 is attached to the temperature control valve core 12, the temperature control spring 14 is engaged with the spring seat plate 13 and the spring seat part 152, and the temperature control valve body 10 is buckled and sealed with the temperature control valve core cavity 63.

[0041] As a further improvement of the present utility model: the limiting plate 4 is provided with an oblong hole 41 and a radial stop plate 42, and one end of the pressing plate 5 is provided with a circular hole 51;

[0042] The fixed rotating part 22 passes through the oblong hole 41 and the circular hole 51; the radial stop plate 42 is engaged with the stop plate 1C in the valve cover 1.

[0043] As a further improvement of the present utility model: the ejector rod passage 681 is provided with a sealing cavity 6811,

[0044] It further includes a sealing ring 161 and a gasket 162,

[0045] The sealing ring 161 is arranged in the sealing cavity 6811, the gasket 162 is arranged on the sealing ring 161, the ejector rod 8 passes through the gasket 162 and the sealing ring 161, and the ejector rod spring 81 is engaged with the head 82 of the ejector rod 8 and the gasket 162.

[0046] As a further improvement of the present utility model: the temperature control valve core 12 includes a connecting hole 121 and a counterbore 122, and the spring seat plate 13 includes a cavity part 131 with an open end and an annular seat plate 132;

[0047] It further includes a buffer sealing ring 17,

[0048] The valve core fixing part 112 is fitted with the counterbore 122, the buffer sealing ring 17 is arranged in the cavity part 131 and is attached to the temperature control valve core 12, and the internal thread cavity 113 passes through the buffer sealing ring 17 and the through hole on the cavity part 131; the temperature control spring 14 is engaged with the annular seat plate 132.

[0049] As a further improvement of the present utility model: the spool cavity 61, the air outlet cavity 62, the temperature control spool cavity 63, the temperature control spool seat 64, the small fire air passage 67, the solenoid valve cavity 68, the ejector rod passage 681 and the transverse air passage 69 are in the same plane.

[0050] As a further improvement of the present utility model: a radial drive rod 18 is provided on the connecting rod portion 111 of the temperature control valve rod 11, and the axial drive groove 731 of the air outlet portion 73

[0051] The radial drive rod 18 is in sliding fit with the axial drive groove 731.

[0052] As Figure 1 shown, in the static state, the temperature control spool 12 and the temperature control spool seat 64 are in contact, and the solenoid valve core of the solenoid valve assembly and the solenoid valve core seat 682 are in contact; the small fire air passage 67 keeps the air outlet cavity and the temperature control spool cavity 63 in communication, and is always in a communicating state;

[0053] In Figure 1 、 Figure 2 、 Figure 8 state, when the valve rod 1 is pressed, the limit plate 4 and the pressing plate 5 move along with the valve rod 2, and the pressing plate 5 drives the ejector rod 8 to move and compress the ejector rod spring 81. The ejector rod makes the solenoid valve core of the solenoid valve assembly leave the solenoid valve core seat 682, and the gas enters the solenoid valve cavity 68 through the air inlet joint, enters the transverse passage 69 and the pilot gas inlet passage 66 through the solenoid valve core seat; when the valve rod loses power, under the action of the pressing ejector rod spring 81, the ejector rod automatically returns;

[0054] Then rotate the valve rod 2 counterclockwise. The valve rod drives the spool 7 and the temperature control valve rod 11 to rotate along with the spool 7, and the temperature control valve rod moves towards the temperature sensing head 15. The temperature control spool 12 leaves the temperature control spool seat 64; the gas enters the control part 72 through the transverse air passage 69 and the air regulating hole group 721; one is that the gas enters the temperature control valve body 10 through the air outlet part 73 and the air outlet cavity 62 and flows out from the main gas outlet pipe 101 into the burner; the second is that the gas enters the temperature control valve body 10 through the small fire air passage 67; the third is that the gas enters the pilot gas outlet pipe 65 through the pilot gas inlet passage 66 and the pilot gas guide groove 722.

[0055] When the temperature sensing head 10 is heated, it drives the temperature control valve rod 11 and the temperature control spool 12 to move towards the temperature control spool seat 64. The temperature control valve rod 11 and the spool are in sliding fit; the gas volume is adjusted, or the temperature control spool 12 fits against the temperature control spool seat 64, and the burner burns in a small fire in sequence.

[0056] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A temperature control valve with flameout protection, characterized in that: Including valve cover, valve stem, spring, limit plate, pressure plate, valve body, valve core, push rod, push rod spring, solenoid valve assembly, temperature control valve body, temperature control valve stem, temperature control valve core, spring seat plate, temperature control spring and temperature sensing head, The valve cover includes a valve stem channel and a pressure plate cavity. The valve stem includes a flange and a waist-shaped head. The waist-shaped head is provided with a fixed rotating part and a driving part. The valve body includes a valve core cavity, an air outlet cavity provided at the end of the valve core cavity, a temperature control valve core cavity and a temperature control valve core seat, a permanent flame air outlet pipe, a permanent flame air inlet passage, a low-fire air passage, a solenoid valve cavity, a push rod passage, a transverse air passage and an air inlet joint. The low-fire air passage is connected with the air outlet cavity and the temperature control valve core cavity, and the permanent flame air inlet passage is connected with the valve core cavity and the transverse air passage. The valve core includes a driving sleeve, a control part and an air outlet part. The control part is provided with an air adjustment hole group and a long-fire air guide groove; the end of the air outlet part 73 is open and provided with radial air outlet holes; The temperature control valve body includes a main air outlet pipe and a fixing hole; the temperature control valve stem includes a connecting rod part, a valve core fixing part and an internal thread cavity; the temperature sensing head includes an external thread head part, a spring seat part and an external thread rod part. The valve stem and the valve stem channel rotate in cooperation, the flange and the countersunk hole rotate in cooperation, the nut and the driving part are screwed together to keep the limit plate and the pressure plate on the fixed rotating part, the control part cooperates with the valve core cavity, and the air outlet part extends into the air outlet cavity; the valve cover and the valve body are fixed, the driving part is inserted into the driving groove of the driving sleeve, and the pressure plate and the pressure plate cavity slide in cooperation; the solenoid valve assembly is arranged in the solenoid valve cavity, the push rod passes through the push rod spring, the push rod channel extends into the solenoid valve core seat and cooperates with the solenoid valve core of the solenoid valve assembly; the external thread head is fixed to the fixing hole, the temperature control valve core is fixed to the valve core fixing part, the external thread rod part is screwed with the internal thread cavity, the connecting rod part and the air outlet part; the spring seat plate is fitted with the temperature control valve core, the temperature control spring cooperates with the spring seat plate and the spring seat part, and the temperature control valve body is buckled and sealed with the temperature control valve core cavity.

2. A temperature control valve with flameout protection according to claim 1, characterized in that: The limit plate is provided with a waist-shaped hole and a radial stop plate, and one end of the pressure plate is provided with a circular hole; The fixed rotating part passes through the waist-shaped hole and the circular hole; the radial stop plate is matched with the stop plate in the valve cover.

3. The temperature control valve with flameout protection according to claim 1, characterized in that: The ejector passage is provided with a sealing cavity. Also includes seals and gaskets, The sealing ring is arranged in the sealing cavity, the gasket is arranged on the sealing ring, the push rod passes through the gasket and the sealing ring, and the push rod spring cooperates with the head of the push rod and the gasket.

4. The temperature control valve with flameout protection according to claim 1, characterized in that: The temperature control valve core includes a connecting hole and a countersunk hole, and the spring seat plate includes a cavity portion with an opening at one end and an annular seat plate; Also includes a buffer seal, The valve core fixing part is embedded in the countersunk hole, the buffer sealing ring is arranged in the cavity part and fits with the temperature control valve core, and the internal thread cavity passes through the buffer sealing ring and the through hole on the cavity part; the temperature control spring and the annular seat plate cooperate.

5. The temperature control valve with flameout protection according to claim 1, characterized in that: The valve core cavity, the air outlet cavity, the temperature control valve core cavity and the temperature control valve core seat, the low-fire air passage, the solenoid valve cavity, the push rod passage and the transverse air passage are in the same plane.

6. The temperature control valve with flameout protection according to claim 1, characterized in that: A radial driving rod is provided on the connecting rod portion of the temperature control valve stem, and the radial driving rod is slidably matched with the axial driving groove.

Images