A fine-tuning pressure valve

Abstract

The invention discloses a fine-tuning pressure valve, comprising a lower valve body, an upper valve body, a valve core assembly and a knob; the lower valve body is mounted on a pot cover, and is provided with an air outlet connected to a pressure cooker; the upper valve body is detachably mounted on the lower valve body, and an air flow channel is formed between the upper valve body and the lower valve body; the valve core assembly is mounted in the upper valve body, and its upper part is spirally connected to the upper valve body, and its upper end is connected to the knob, and the valve core assembly moves up and down along the spiral with the rotation of the knob to close or release the air outlet; an exhaust hole is provided on the side wall of the upper valve body, and the exhaust hole connects the air flow channel with the outside of the pot. The pressure valve is screwed with a spiral line and has an infinitely fine-tuning function; water vapor will not run into the valve core or the guide cylinder of the upper valve body, ensuring its internal hygiene; the water vapor in the pot is discharged after pausing in the exhaust channel of the upper valve body, which acts as a buffer, and the water vapor cannot be directly sprayed out, which acts as an anti-scalding function; the upper valve body and the lower valve body are detachably mounted, and cleaning can be completed after disassembly.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen cooking utensil accessories, in particular to a fine-tuning pressure valve. Background Art

[0002] The pressure valves of pressure cookers on the market have certain defects during use. Some pressure valves have fixed structures, making it difficult to control stable pressure release under different cooking conditions, and it is difficult to clean the pressure valves after use. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a fine-tuning pressure valve.

[0004] The present invention is realized through the following technical scheme: a fine-tuning pressure valve, which is installed on the pot cover of a pressure cooker, comprises a lower valve body, an upper valve body, a valve core assembly and a knob; the lower valve body is installed on the pot cover, and is provided with an air outlet hole connected with the pressure cooker; the upper valve body is detachably installed on the lower valve body, and an air flow channel is formed between the upper valve body and the lower valve body; the valve core assembly is installed in the upper valve body, and its upper part is spirally connected with the upper valve body, and its upper end is connected with the knob, and the valve core assembly moves up and down along the spiral part with the rotation of the knob to close or release the air outlet hole; the side wall of the upper valve body is provided with an exhaust hole, and the exhaust hole connects the air flow channel with the outside of the pot.

[0005] The upper valve body is detachably mounted on the lower valve body and can be disassembled for flushing and cleaning; according to the cooking of different ingredients, the valve core assembly controls the size of the pressure relief by the degree of rotation of the knob, or the closed pressure cooker realizes the pressure maintaining function; the exhaust hole, air flow channel, and air outlet hole form an exhaust channel to realize the pressure relief function.

[0006] The valve core assembly includes a spiral shaft, a pressure spring and a valve core body; the interior of the spiral shaft is penetrated from top to bottom by a through hole, the lower part of the spiral shaft extends into the through hole to form a first undercut, and the outer circumference of the spiral shaft is provided with a first spiral line spirally arranged from top to bottom; the valve core body includes a cylinder arranged on the upper side of the valve core body, a guide column fixed on the cylinder, a second undercut arranged on the upper part of the guide column, and a valve core bottom end arranged on the lower side of the valve core body; the guide column of the valve core body is inserted into the through hole and slides along it, and when it slides down to the lower limit, the first undercut buckles the second undercut; the pressure spring is sleeved on the outer circumference of the cylinder, and its upper end presses against the bottom of the first spiral line as the valve core assembly moves; the bottom end of the valve core closes or releases the air outlet as the valve core assembly moves up and down. The cooperation between the first undercut and the second undercut prevents the guide column from falling off; the through hole provides guidance for the guide column, and the pressure spring provides elastic force for the valve core body, pushing the valve core body to move toward the air outlet; the setting of the pressure spring enables the valve core assembly to form a pressure-carrying air valve function.

[0007] A hollow guide cylinder is provided at the upper part of the upper valve body, and the lower end of the guide cylinder is communicated with the interior of the upper valve body; a second spiral line arranged from top to bottom is provided on the inner wall of the guide cylinder, and the second spiral line matches the first spiral line; a pair of pairs of side walls in the upper valve body are respectively provided with positioning clamps; a pair of side edges of the lower valve body are respectively provided with lower valve body grooves, and the lower valve body grooves include a first vertical guide groove and a first transverse guide groove connected thereto; a lower valve body bolt is provided at the lower end of the lower valve body, and the air outlet passes through the lower valve body bolt up and down, and the lower valve body also includes a slag separator nut, and the slag separator nut is provided with an air vent, the upper side of the air vent is communicated with the air outlet, and the lower side thereof is communicated with the inside of the pot, and the lower valve body bolt is locked on the pot cover with the slag separator nut after passing through the pot cover; after the positioning clamp is aligned from the first vertical guide groove and pressed downward to the first transverse guide groove, the upper valve body is rotated to clamp the positioning clamp in the first transverse guide groove so that the upper valve body and the lower valve body are clamped. The cooperation between the first spiral line and the second spiral line enables the spiral shaft to spiral along the inner wall of the guide cylinder to realize the lifting function. The two spiral lines are screwed together to enable the pressure valve to have an infinitely fine-tuning function. Within a certain speed range, it can continuously and arbitrarily make extremely small adjustments, making the product have more humane cooking control; the cooperation between the positioning card and the groove of the lower valve body allows the upper valve body to be detachably buckled on the lower valve body; the lower valve body bolt is used to fix the lower valve body on the pot cover.

[0008] The knob is a cylindrical structure with an opening at the bottom and a cavity, and a special-shaped column is provided on the lower side of the cylinder, and a protruding position is provided on the inner side wall of the cylinder; a level is formed at the connection between the lower part of the upper valve body and the guide cylinder, and an upper valve body groove is provided on the outer side of the guide cylinder, and the upper valve body groove includes a second vertical guide groove and a second horizontal guide groove connected thereto; a special-shaped hole is provided on the upper part of the through hole of the spiral shaft, and the shape of the special-shaped hole matches the shape of the special-shaped column; after the protruding position is aligned with the second vertical guide groove and pressed downward to the second horizontal guide groove, the knob is rotated so that the protruding position is clamped in the second horizontal guide groove so that the knob is clamped with the guide cylinder of the upper valve body; the lower edge of the knob is in contact with the level rotation of the upper valve body, and the special-shaped column forces the first spiral line of the spiral shaft to engage with the second spiral line of the guide cylinder as the knob rotates, thereby realizing the lifting and lowering of the valve core assembly. The special-shaped hole matches the special-shaped column, and the knob can drive the spiral shaft to rotate along the guide cylinder to achieve lifting and lowering; the cooperation between the protruding position and the groove of the upper valve body can realize the detachable fixation of the knob, and the sliding of the protruding position along the second transverse guide groove enables the knob to realize the rotation function.

[0009] The lower side of the inner wall of the guide cylinder extends inward to form a third undercut, and the bottom end of the valve core of the valve core body passes through the hole formed by the third undercut from top to bottom; the diameter of the bottom end of the valve core is smaller than the aperture formed by the third undercut, and the diameter of the outermost end of the valve core body is larger than the diameter formed by the third undercut; an annular groove is provided on the outer periphery of the valve core body on the upper side of the bottom end of the valve core, and a leakproof sealing ring is sleeved in the annular groove, and the diameter of the leakproof sealing ring is larger than the aperture formed by the third undercut. The third undercut can limit the movement range of the valve core body and prevent it from falling off; the setting of the leakproof sealing ring can avoid the water vapor runway valve core assembly and the guide cylinder of the upper valve body, ensuring the internal hygiene.

[0010] The upper side of the lower valve body around the air outlet is convex upward to form an arc surface of the air outlet, and the bottom end of the valve core of the valve core body forms an arc-shaped convex surface that matches and fits the arc surface of the air outlet; the lower end of the first undercut is provided with an inclined surface, and the inclined surface extends upward from one end of the spiral shaft to the free end of the first undercut. The bottom end of the valve core matches the arc surface of the air outlet, which can make its sealing performance better; the inclined surface at the lower end of the first undercut can play a guiding role when the guide column is inserted, and expand the hole formed by the first undercut, which is conducive to the insertion of the guide column into the through hole.

[0011] An annular anti-skid tape is provided on the upper outer periphery of the knob, and an identification strip is provided on one side of the anti-skid tape; the upper side surface of the upper valve body is provided with a first-level identification, a second-level identification and a third-level identification; when the protruding position is pressed downward from the second vertical guide groove to the intersection with the second transverse guide groove, the identification strip is aligned with the first-level identification; when the protruding position is rotated to the radius of the second transverse guide groove path, the identification strip is aligned with the second-level identification; when the protruding position is rotated to the end of the second transverse guide groove path, the identification strip is aligned with the third-level identification. The provision of the anti-skid tape facilitates the user to rotate the knob and avoid hand slippage. The provision of three levels of identification can guide the user to rotate the knob to the corresponding position to loosen or tighten the air outlet.

[0012] The bottom of the outer periphery of the upper valve body is provided with a turn indicator mark for indicating the direction of rotation. The setting of the turn indicator mark can facilitate the user to rotate and avoid turning in the wrong direction.

[0013] The lower part of the upper valve body is a tapered structure from bottom to top, and its cross section is conical. There are three exhaust holes, which are radially distributed on the conical side wall of the upper valve body. The lower part of the upper valve body with a tapered structure allows water vapor to be sprayed obliquely from the exhaust holes to avoid direct spraying and causing burns.

[0014] The hemispherical portion at the bottom end of the slag-isolating nut is provided with cross grooves that are crisscrossed and penetrate the nut, and the cross grooves are connected to the air holes. The setting of the cross grooves can prevent large particles from entering the air outlet holes, thereby achieving the slag-isolating function.

[0015] Compared with the prior art, the advantages of the present invention are: the pressure valve is screwed together with two spiral lines, which can give it an infinite fine-tuning function and enable more humane cooking control; water vapor will not run into the valve core or the guide cylinder of the upper valve body, ensuring internal hygiene; when the water vapor in the pot is discharged from the air outlet, due to the obstruction of the upper valve body, the water vapor pauses in the exhaust channel of the upper valve body before being discharged, which acts as a buffer, so that the water vapor cannot be sprayed out directly, thereby playing an anti-scalding function; the user rotates the upper valve body to separate the upper valve body from the lower valve body, and at this time, the cleaning work can be completed by simply rinsing the inside of the upper valve body and the lower valve body with clean water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the embodiment of the present invention after the structure is decomposed and cut along the longitudinal direction;

[0017] Figure 2 A three-dimensional diagram of an embodiment of the present invention;

[0018] Figure 3 A side view of an embodiment of the present invention;

[0019] Figure 4 for Figure 3 Sectional view along AA direction;

[0020] Figure 5 is a three-dimensional diagram of a knob according to an embodiment of the present invention;

[0021] Figure 6 is a top view of a knob according to an embodiment of the present invention;

[0022] Figure 7 A bottom view of a knob according to an embodiment of the present invention;

[0023] Figure 8 It is a cross-sectional view of a knob according to an embodiment of the present invention cut along the longitudinal direction;

[0024] Fig. 9 It is a side view of the valve core assembly according to an embodiment of the present invention;

[0025] Fig.10 for Fig. 9 Cross-sectional view along the BB direction;

[0026] Fig.11 A top view of a valve core assembly according to an embodiment of the present invention;

[0027] Fig.12 A three-dimensional diagram of a valve core assembly according to an embodiment of the present invention;

[0028] Fig.13 It is a schematic diagram of the structural decomposition of the valve core assembly according to an embodiment of the present invention;

[0029] Fig.14 It is a side view of the valve core assembly according to an embodiment of the present invention exploded along the vertical direction;

[0030] Fig.15 for Fig.14 Sectional view along CC direction;

[0031] Fig.16 It is a structural schematic diagram of a spiral shaft according to an embodiment of the present invention;

[0032] Fig.17 is a side view of a spiral shaft according to an embodiment of the present invention;

[0033] Fig.18 for Fig.17 Cross-sectional view along the DD direction;

[0034] Fig.19 A top view of a spiral shaft according to an embodiment of the present invention;

[0035] Fig. 20 A bottom view of a spiral shaft according to an embodiment of the present invention;

[0036] Fig.21 It is a side view of the valve core body according to an embodiment of the present invention;

[0037] Fig. 22 for Fig.21 Sectional view along EE direction;

[0038] Fig.23 It is a three-dimensional diagram of the valve core body of an embodiment of the present invention;

[0039] Fig.24 A side view of the upper valve body of an embodiment of the present invention;

[0040] Fig.25 for Fig.24 Sectional view along the FF axis;

[0041] Fig.26 A top view of the upper valve body of an embodiment of the present invention;

[0042] Fig. 27 A bottom view of the upper valve body of an embodiment of the present invention;

[0043] Fig.28 It is a side view of the valve body in another direction of the embodiment of the present invention;

[0044] Fig.29 It is a three-dimensional view of the lower side of the upper valve body of an embodiment of the present invention;

[0045] Fig.30It is a three-dimensional view of the upper side of the valve body in an embodiment of the present invention;

[0046] Fig.31 It is a side view of the lower valve body of the embodiment of the present invention;

[0047] Fig.32 for Fig.31 Sectional view along the GG axis;

[0048] Fig.33 A top view of the lower valve body of an embodiment of the present invention;

[0049] Fig.34 A bottom view of the lower valve body of an embodiment of the present invention;

[0050] Fig.35 A three-dimensional diagram of a valve body according to an embodiment of the present invention;

[0051] Fig.36 This is a front view of the leak-proof sealing ring according to an embodiment of the present invention;

[0052] Fig.37 for Fig.36 Cross-sectional view along the mid-HH direction;

[0053] Fig.38 A three-dimensional diagram of a leak-proof sealing ring according to an embodiment of the present invention;

[0054] Fig.39 This is a schematic diagram of the structure of a slag separator nut according to an embodiment of the present invention;

[0055] Fig.40 A top view of a slag separator nut according to an embodiment of the present invention;

[0056] Fig.41 A bottom view of a slag separator nut according to an embodiment of the present invention;

[0057] Fig.42 It is a side view of the cooperation between the valve body and the valve core body in the embodiment of the present invention;

[0058] Fig.43 for Fig.42 Sectional view along the JJ axis;

[0059] Fig.44 It is a side view of the valve body and the valve core body in a longitudinally exploded state in an embodiment of the present invention;

[0060] Fig.45 for Fig.44 Sectional view along the KK axis;

[0061] Fig.46 It is a three-dimensional diagram of the longitudinally exploded state of the valve body and the valve core body in an embodiment of the present invention.

[0062] Meanings of reference numerals in the figure: 09, knob; 091, special-shaped column; 092, identification strip; 093, protruding position; 094, anti-slip strip; 010, spiral shaft; 0101, first undercut; 0102, special-shaped hole; 0103, first spiral line; 0104, inclined surface; 011, pressure spring; 012, valve core body; 0121, second undercut; 0122, annular groove; 0123, cylinder; 0124, bottom end of valve core; 0125, guide column; 013, upper valve body; 0131, first transverse guide groove; 0 132. Exhaust hole; 0133. Anti-dropping latch; 0134. Second spiral line; 0135. Turn indicator mark; 0136. Positioning latch; 0137. Inside of upper valve body; 0138. First vertical guide groove; 0139. Guide cylinder; 01310. Third undercut; 014. Leak-proof sealing ring; 015. Lower valve body; 0151. Second horizontal guide groove; 0152. Arc surface of air outlet; 0153. Lower valve body bolt; 0154. Second vertical guide groove; 016. Slag separator nut; 0161. Exhaust hole. DETAILED DESCRIPTION

[0063] The content of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0064] Example

[0065] See also Figures 1 to 46 , is a fine-tuning pressure valve, installed on the lid of the pressure cooker, comprising a lower valve body 015, an upper valve body 013, a valve core assembly and a knob 09; the lower valve body 015 is installed on the lid, and is provided with an air outlet connected to the pressure cooker; the upper valve body 013 is detachably installed on the lower valve body 015, and an air flow channel is formed between the upper valve body 013 and the lower valve body 015; the valve core assembly is installed in the upper valve body 013, and its upper part is spirally connected to the upper valve body 013, and its upper end is connected to the knob 09, and the valve core assembly moves up and down along the spiral with the rotation of the knob 09 to close or release the air outlet; the side wall of the upper valve body 013 is provided with an exhaust hole 0132, and the exhaust hole 0132 connects the air flow channel with the outside of the pot.

[0066] The upper valve body 013 is detachably mounted on the lower valve body 015, and can be disassembled for washing and cleaning; according to the cooking of different ingredients, the valve core assembly controls the size of the pressure relief through the degree of rotation of the knob 09, or the closed pressure cooker realizes the pressure maintaining function; the exhaust hole 0132, the air flow channel, and the air outlet hole form an exhaust channel to realize the pressure relief function.

[0067] The valve core assembly includes a spiral shaft 010, a pressure spring 011 and a valve core body 012; the interior of the spiral shaft 010 is penetrated from top to bottom by a through hole, the lower part of the spiral shaft 010 extends into the through hole to form a first undercut 0101, and the outer periphery of the spiral shaft 010 is provided with a first spiral line 0103 spirally arranged from top to bottom; the valve core body 012 includes a cylinder 0123 arranged on the upper side of the valve core body 012, a guide column 0125 fixed on the cylinder 0123, and a guide column 0125 arranged on the guide column 0125 The second inverted buckle 0121 at the top and the bottom end 0124 of the valve core arranged at the lower side of the valve core body 012; the guide column 0125 of the valve core body 012 is inserted into the through hole and slides along it. When it slides down to the lower limit, the first inverted buckle 0101 buckles the second inverted buckle 0121; the pressure spring 011 is sleeved on the outer circumference of the cylinder 0123, and its upper end presses against the bottom of the first spiral line 0103 as the valve core assembly moves; the bottom end 0124 of the valve core seals or releases the air outlet as the valve core assembly moves up and down. The cooperation between the first inverted buckle 0101 and the second inverted buckle 0121 prevents the guide column 0125 from falling off; the through hole provides guidance for the guide column 0125, and the pressure spring 011 provides elastic force for the valve core body 012, pressing the valve core body 012 to move toward the air outlet; the setting of the pressure spring 011 enables the valve core assembly to form a pressure-carrying air valve function.

[0068] A hollow guide cylinder 0139 is provided at the upper part of the upper valve body 013, and the lower end of the guide cylinder 0139 is connected to the interior 0137 of the upper valve body; a second spiral line 0134 arranged from top to bottom is provided on the inner wall of the guide cylinder 0139, and the second spiral line 0134 matches the first spiral line 0103; a pair of side walls in the upper valve body 013 are respectively provided with positioning positions 0136; a pair of side edges of the lower valve body 015 are respectively provided with grooves of the lower valve body 015, and the grooves of the lower valve body 015 include a first vertical guide groove 0138 and a first horizontal guide groove 0131 connected thereto; a lower valve body bolt is provided at the lower end of the lower valve body 015 0153, the air outlet passes through the lower valve body bolt 0153 up and down, the lower valve body 015 also includes a slag separator nut 016, the slag separator nut 016 is provided with an air vent 0161, the upper side of the air vent 0161 is connected to the air outlet, and the lower side is connected to the pot, the lower valve body bolt 0153 passes through the pot cover and is locked on the pot cover with the slag separator nut 016; after the positioning clamp 0136 is aligned from the first vertical guide groove 0138 and pressed downward to the first transverse guide groove 0131, the upper valve body 013 is rotated to clamp the positioning clamp 0136 in the first transverse guide groove 0131 so that the upper valve body 013 and the lower valve body 015 are clamped. The cooperation between the first spiral line 0103 and the second spiral line 0134 enables the spiral shaft 010 to spiral along the inner wall of the guide cylinder 0139 to realize the lifting function. The two spiral lines are screwed together to enable the pressure valve to have an infinitely fine-tuning function. Within a certain speed range, it can continuously and arbitrarily make extremely small adjustments, making the product have more user-friendly cooking control; the cooperation between the positioning position 0136 and the groove of the lower valve body 015 allows the upper valve body 013 to be detachably buckled on the lower valve body 015; the lower valve body bolt 0153 is used to fix the lower valve body 015 on the pot cover.

[0069] The knob 09 is a cylindrical structure with an opening at the bottom and a cavity, wherein a special-shaped column 091 is provided at the bottom of the cylinder, and a protruding stopper 093 is provided on the inner wall of the cylinder; a step is formed at the connection between the lower part of the upper valve body 013 and the guide cylinder 0139, and a groove of the upper valve body 013 is provided on the outer side of the guide cylinder 0139, and the groove of the upper valve body 013 includes a second vertical guide groove 0154 and a second horizontal guide groove 0151 connected thereto; a special-shaped hole 0102 is provided at the upper part of the through hole of the spiral shaft 010, and the shape of the special-shaped hole 0102 matches the shape of the special-shaped column 091 After the protruding latch 093 is aligned with the second vertical guide groove 0154 and pressed downward to the second transverse guide groove 0151, the knob 09 is rotated to clamp the protruding latch 093 in the second transverse guide groove 0151 so that the knob 09 is clamped with the guide cylinder 0139 of the upper valve body 013; the lower edge of the knob 09 is in contact with the step rotation of the upper valve body 013, and the special-shaped column 091 forces the first spiral line 0103 of the spiral shaft 010 to engage with the second spiral line 0134 of the guide cylinder 0139 as the knob 09 rotates, thereby realizing the lifting and lowering of the valve core assembly. The special-shaped hole 0102 matches the special-shaped column 091, and the knob 09 can drive the spiral shaft 010 to rotate along the guide cylinder 0139 to achieve lifting and lowering; the cooperation between the protruding latch 093 and the groove of the upper valve body 013 can realize the detachable fixation of the knob 09, and the sliding of the protruding latch 093 along the second transverse guide groove 0151 enables the knob 09 to realize the rotation function.

[0070] The lower side of the inner wall of the guide cylinder 0139 extends inward to form a third undercut 01310, and the valve core bottom end 0124 of the valve core body 012 passes through the hole formed by the third undercut 01310 from top to bottom; the diameter of the valve core bottom end 0124 is smaller than the aperture formed by the third undercut 01310, and the diameter of the outermost end of the valve core body 012 is larger than the diameter formed by the third undercut 01310; the outer periphery of the valve core body 012 on the upper side of the valve core bottom end 0124 is provided with an annular groove 0122, and a leakproof sealing ring 014 is sleeved in the annular groove 0122, and the diameter of the leakproof sealing ring 014 is larger than the aperture formed by the third undercut 01310. The third undercut 01310 can limit the movement range of the valve core body 012 to prevent it from falling off; the provision of the leakproof sealing ring 014 can avoid the water vapor runway valve core assembly and the guide cylinder 0139 of the upper valve body 013, ensuring the hygiene of the interior 0137 of the upper valve body.

[0071] The upper side of the lower valve body 015 around the air outlet is convex upward to form an air outlet arc surface 0152, and the valve core bottom end 0124 of the valve core body 012 forms an arc-shaped convex surface that matches and fits the air outlet arc surface 0152; the lower end of the first undercut 0101 is provided with an inclined surface 0104, and the inclined surface 0104 extends upward from one end of the spiral shaft 010 to the free end of the first undercut 0101. The valve core bottom end 0124 matches the air outlet arc surface 0152, which can make its sealing performance better; the inclined surface 0104 at the lower end of the first undercut 0101 can play a guiding role when the guide column 0125 is inserted, and expand the hole formed by the first undercut 0101, which is conducive to the insertion of the guide column 0125 into the through hole.

[0072] The outer periphery of the knob 09 is provided with a ring-shaped anti-skid strip 094 on the upper part, and an identification strip 092 is provided on one side of the anti-skid strip 094; the upper side of the upper valve body 013 is provided with a first-level identification, a second-level identification and a third-level identification; when the protruding clamping position 093 is pressed downward from the second vertical guide groove 0154 to the intersection with the second transverse guide groove 0151, the identification strip 092 is aligned with the first-level identification; when the protruding clamping position 093 is rotated to the radius of the second transverse guide groove 0151 path, the identification strip 092 is aligned with the second-level identification; when the protruding clamping position 093 is rotated to the end of the second transverse guide groove 0151 path, the identification strip 092 is aligned with the third-level identification. The provision of the anti-skid strip 094 is conducive to the user rotating the knob 09 to avoid hand slippage. The provision of three levels of identification can guide the user to rotate the knob 09 to the corresponding position to loosen or tighten the air outlet. In the drawings of this embodiment, the upper side surfaces of the upper valve body 013 are respectively provided with numbers 0, 1, and 2, which correspond to the first-level identification, the second-level identification, and the third-level identification, respectively.

[0073] A turning indicator mark 0135 for indicating the direction of rotation is provided at the bottom of the outer periphery of the upper valve body 013. The setting of the turning indicator mark 0135 can facilitate the user to rotate and avoid turning in the wrong direction.

[0074] The lower part of the upper valve body 013 is a structure with a gradually decreasing diameter from bottom to top, and its cross section is conical, and there are three exhaust holes 0132, which are radially distributed on the conical side wall of the upper valve body 013. The lower part of the upper valve body 013 with a gradually decreasing diameter structure allows water vapor to be sprayed obliquely from the exhaust holes 0132 to avoid direct spraying and causing burns.

[0075] The hemispherical portion at the bottom of the slag separating nut 016 is provided with a cross groove that is crisscrossed and penetrates the slag separating nut 016, and the cross groove is connected to the air vent 0161. The setting of the cross groove can prevent large particles from entering the air outlet, thereby realizing the slag separating function.

[0076] Installation of this embodiment:

[0077] 1. Valve core assembly:

[0078] 1. Put the pressure spring 011 on the cylinder 0123 of the valve core body 012.

[0079] 2. Make the first undercut 0101 in the spiral shaft 010 pass through the undercut shaft of the second undercut 0121 to form a whole.

[0080] 2. Assembly of upper valve body 013 and valve core assembly:

[0081] 1. Rotate the valve core assembly from top to bottom into the guide cylinder 0139 (spiral sleeve) in the upper valve body 013.

[0082] 2. Put the leak-proof silicone ring into the ring groove 0122 of the valve core body 012.

[0083] 3. Assembly of knob 09 and upper valve body 013:

[0084] After rotating the valve core assembly to the set position; align the protruding position 093 of the knob 09 with the second vertical guide groove 0154 of the upper valve body 013; make the protruding special-shaped column 091 in the knob 09 concentric with the special-shaped hole 0102 in the spiral shaft 010; slide the knob 09 down to the intersection of the second vertical guide groove 0154 and the second transverse guide groove 0151 (i.e. the anti-drop position 0133), press it down lightly and then rotate it into the second transverse guide groove 0151.

[0085] 4. Assembly of upper and lower valve bodies 015:

[0086] 1. Align the positioning position 0136 of the upper valve body 013 with the groove of the lower valve body 015, slide down, rotate in the specified direction and tighten.

[0087] 2. Pass the lower valve body bolt 0153 of the working valve through the pressure cover surface (pot cover surface), and tighten it to the pressure cover with the slag separator nut 016 from the inside of the cover.

[0088] The working principle of this embodiment:

[0089] Rotate the knob 09 left and right, the special-shaped column 091 in the knob 09 and the valve core assembly drive the valve core assembly to move up and down on the first spiral line 0103 and the second spiral line 0134 of the knob 09 under the action of the special-shaped column 091 of the knob 09 and the second transverse guide groove and the protruding position 093 of the knob 09.

[0090] Rotate the knob 09, when the valve core assembly descends, the bottom of the valve core contacts the arc surface 0152 of the air outlet of the lower valve body 015, and forms a pressure valve function under the action of the pressure spring 011; when the pressure in the pot reaches the set pressure value when the marking bar 092 of the knob 09 turns, the pressure spring 011 automatically rises, and the excess air pressure is automatically discharged from the gap between the bottom end 0124 of the valve core and the arc surface 0152 of the air outlet of the lower valve body 015, ensuring the stability of the pressure in the pot. The pressure adjustment is carried out in the form of the first spiral line 0103 and the second spiral line 0134, which can make this working valve have stepless fine adjustment and more humane cooking control.

[0091] Rotate the knob 09, and when the valve core assembly rises to the set position, under the action of the second undercut 0121 on the valve core body 012 and the first undercut 0101 in the spiral shaft 010, the bottom end 0124 of the valve core is separated from the arc surface 0152 of the air outlet of the lower valve body 015, and the gas pressure in the pot is automatically discharged from the gap between the two, thereby completing the cooking task.

[0092] During the set cooking pressure process, excess water vapor is discharged from the air pipe. Under the "V"-shaped elastic sealing effect of the leakproof sealing ring 014 (the leakproof sealing ring 014 in this embodiment has a V-shaped longitudinal section with the opening facing outward): 1) water vapor will not run into the spiral holes of the valve core body 012 and the guide cylinder 0139 of the upper valve body 013, which can ensure the internal hygiene; 2) when the water vapor in the pot is discharged from the air outlet, it is blocked by the outer shell of the upper valve body 013, and the water vapor pauses in the outer shell of the upper valve body 013 before being discharged from the exhaust hole 0132 of the outer shell of the upper valve body 013, which acts as a buffer and prevents the water vapor from being sprayed out directly. It can also prevent scalding.

[0093] When cleaning the working valve, the user only needs to rotate the upper valve body 013 shell according to the direction indicator mark 0135 to separate the upper valve body 013 from the lower valve body 015. At this time, it is easy to clean the inner part of the shell (the inner part of the upper valve body 0137 and the lower valve body 015) by washing with clean water.

[0094] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. A fine-tuning pressure valve, mounted on the lid of a pressure cooker, characterized in that: The invention comprises a lower valve body, an upper valve body, a valve core assembly and a knob; the lower valve body is mounted on the pot cover and is provided with an air outlet hole connected to the pressure cooker; the upper valve body is detachably mounted on the lower valve body, and an air flow channel is formed between the upper valve body and the lower valve body; the valve core assembly is mounted on the upper valve body, and its upper part is spirally connected to the upper valve body, and its upper end is connected to the knob, and the valve core assembly moves up and down along the spiral part with the rotation of the knob to close or release the air outlet hole; the side wall of the upper valve body is provided with an exhaust hole, and the exhaust hole connects the air flow channel with the outside of the pot; the valve core assembly comprises a spiral shaft, a pressure spring and a valve core body; the interior of the spiral shaft is penetrated from top to bottom by a through hole The lower part of the spiral shaft extends into the through hole to form a first undercut, and the outer circumference of the spiral shaft is provided with a first spiral line spirally arranged from top to bottom; the valve core body comprises a cylinder arranged on the upper side of the valve core body, a guide column fixed on the cylinder, a second undercut arranged on the upper part of the guide column, and a valve core bottom end arranged on the lower side of the valve core body; the guide column of the valve core body is inserted into the through hole and slides along it, and when it slides down to the lower limit, the first undercut buckles the second undercut; the pressure spring is sleeved on the outer circumference of the cylinder, and the upper end thereof presses against the bottom of the first spiral line as the valve core assembly moves; the bottom end of the valve core closes or releases the air outlet as the valve core assembly moves up and down.

2. The fine-tuning pressure valve according to claim 1, characterized in that: A hollow guide cylinder is provided at the upper part of the upper valve body, and the lower end of the guide cylinder is communicated with the interior of the upper valve body; a second spiral line arranged from top to bottom is provided on the inner wall of the guide cylinder, and the second spiral line matches the first spiral line; a pair of pairs of side walls in the upper valve body are respectively provided with positioning clamps; a pair of side edges of the lower valve body are respectively provided with lower valve body grooves, and the lower valve body grooves include a first vertical guide groove and a first transverse guide groove connected thereto; a lower valve body bolt is provided at the lower end of the lower valve body, and the air outlet passes through the lower valve body bolt up and down, and the lower valve body also includes a slag separator nut, and the slag separator nut is provided with an air vent, the upper side of the air vent is communicated with the air outlet, and the lower side thereof is communicated with the inside of the pot, and the lower valve body bolt is locked on the pot cover with the slag separator nut after passing through the pot cover; after the positioning clamp is aligned from the first vertical guide groove and pressed downward to the first transverse guide groove, the upper valve body is rotated to clamp the positioning clamp in the first transverse guide groove so that the upper valve body and the lower valve body are clamped.

3. The fine-tuning pressure valve according to claim 2, characterized in that: The knob is a cylindrical structure with an opening at the bottom and a cavity, and a special-shaped column is provided on the lower side of the cylinder, and a protruding position is provided on the inner side wall of the cylinder; a level is formed at the connection between the lower part of the upper valve body and the guide cylinder, and an upper valve body groove is provided on the outer side of the guide cylinder, and the upper valve body groove includes a second vertical guide groove and a second horizontal guide groove connected thereto; a special-shaped hole is provided on the upper part of the through hole of the spiral shaft, and the shape of the special-shaped hole matches the shape of the special-shaped column; after the protruding position is aligned with the second vertical guide groove and pressed downward to the second horizontal guide groove, the knob is rotated so that the protruding position is clamped in the second horizontal guide groove so that the knob is clamped with the guide cylinder of the upper valve body; the lower edge of the knob is in contact with the level rotation of the upper valve body, and the special-shaped column forces the first spiral line of the spiral shaft to engage with the second spiral line of the guide cylinder as the knob rotates, thereby realizing the lifting and lowering of the valve core assembly.

4. The fine-tuning pressure valve according to claim 2, characterized in that: The lower side of the inner wall of the guide cylinder extends inward to form a third inverted buckle, and the bottom end of the valve core of the valve core body passes through the hole formed by the third inverted buckle from top to bottom; the diameter of the bottom end of the valve core is smaller than the aperture formed by the third inverted buckle, and the diameter of the outermost end of the valve core body is larger than the diameter formed by the third inverted buckle; an annular groove is provided on the outer periphery of the valve core body on the upper side of the bottom end of the valve core, and a leak-proof sealing ring is sleeved in the annular groove, and the diameter of the leak-proof sealing ring is larger than the aperture formed by the third inverted buckle.

5. The fine-tuning pressure valve according to claim 1, characterized in that: The upper side of the lower valve body around the air outlet is convex upward to form an arc surface of the air outlet, and the bottom end of the valve core of the valve core body forms an arc-shaped convex surface that matches and fits the arc surface of the air outlet; the lower end of the first inverted buckle is provided with an inclined surface, and the inclined surface extends upward from one end of the spiral shaft to the free end of the first inverted buckle.

6. The fine-tuning pressure valve according to claim 3, characterized in that: A circle of annular anti-slip strips is provided on the upper outer periphery of the knob, and an identification strip is provided on one side of the anti-slip strips; the upper side surface of the upper valve body is provided with a first-level identification, a second-level identification and a third-level identification; when the protruding clamping position is pressed downward from the second vertical guide groove to the intersection with the second transverse guide groove, the identification strip is aligned with the first-level identification; when the protruding clamping position is rotated to the radius of the second transverse guide groove path, the identification strip is aligned with the second-level identification; when the protruding clamping position is rotated to the end of the second transverse guide groove path, the identification strip is aligned with the third-level identification.

7. The fine-tuning pressure valve according to claim 3, characterized in that: A turning indication mark for indicating the direction of rotation is provided at the bottom of the outer periphery of the upper valve body.

8. The fine-tuning pressure valve according to claim 3, characterized in that: The lower part of the upper valve body is a structure with a gradually decreasing diameter from bottom to top, and its cross section is conical. There are three exhaust holes, and the three exhaust holes are radially distributed on the conical side wall of the upper valve body.

9. The fine-tuning pressure valve according to claim 2, characterized in that: The hemispherical portion at the bottom end of the slag separator nut is provided with cross grooves which are crisscrossed and penetrate the hemispherical portion, and the cross grooves are connected with the air holes.

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