CN215686764U - Pressure regulating valve, pot cover and pot - Google Patents

Abstract

The utility model provides a pressure regulating valve, a cooker cover and a cooker, wherein the pressure regulating valve is connected with an exhaust pipe, the exhaust pipe is provided with a first exhaust port and a second exhaust port which are communicated with each other, the sectional area of the first exhaust port is larger than that of the second exhaust port, the second exhaust port is positioned below the first exhaust port, and the pressure regulating valve comprises: valve body and case subassembly and pressure regulating switch, the case subassembly cup joints in the inside of valve body, and the case subassembly is including the inner valve core and the outer valve core that cup joint each other, and outer valve core is fixed in on the valve body and the first gas vent of outer valve core shutoff, and outer valve core is provided with the outer valve core through-hole that extends along the extending direction of blast pipe, and inner valve core slidable ground cover is located in the outer valve core through-hole with selectively shutoff second gas vent, and pressure regulating switch is located the top of case subassembly, pressure regulating switch include along the extending direction slidable ground of blast pipe set up the connecting block in the valve body, and the connecting block supports the top in inner valve core to the removal drive inner valve core through the connecting block removes for the blast pipe.

Description

Pressure regulating valve, pot cover and pot

Technical Field

The utility model relates to the technical field of household kitchen utensils, in particular to a pressure regulating valve, a cooker cover and a cooker.

Background

Pressure cookers on the market at present generally control the pressure in the cooker through a pressure regulating valve thereon, and maintain the fixed pressure in the cooker, thereby cooking the food in the cooker.

When pressure is adjusted using a pressure regulating valve, the pressure can be adjusted by changing the weight of the pressure regulating valve, or the pressure can be adjusted by a spring pressure provided in the pressure regulating valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pressure regulating valve, a cooker cover and a cooker with simpler structures.

For the purpose as described above, the present disclosure provides the following technical solutions:

according to an aspect of the present invention, there is provided a pressure regulating valve connected to an exhaust pipe, the exhaust pipe having a first exhaust port and a second exhaust port that communicate with each other, and a cross-sectional area of the first exhaust port being larger than a cross-sectional area of the second exhaust port, the first exhaust port being disposed at a top end of the exhaust pipe, the second exhaust port being located below the first exhaust port, the pressure regulating valve including a valve body, a valve element assembly, and a pressure regulating switch, the valve element assembly being sleeved inside the valve body, the valve element assembly including an inner valve element and an outer valve element that are sleeved with each other, the outer valve element being fixed to the valve body and blocking the first exhaust port, the outer valve element being provided with an outer valve element through hole that extends in an extending direction of the exhaust pipe, the inner valve element being slidably sleeved in the outer valve element through hole to selectively block the second exhaust port, the pressure regulating switch is positioned above the valve core assembly, the pressure regulating switch comprises a connecting block which is arranged in the valve body in a sliding manner along the extending direction of the exhaust pipe, and the connecting block is abutted against the top of the inner valve core so as to drive the inner valve core to move relative to the exhaust pipe through the movement of the connecting block. The connecting block is driven to move so as to push the inner valve core to move relative to the outer valve core along the extending direction of the exhaust pipe, so that the second exhaust port can be selectively blocked, and the pressure regulating valve can maintain different regulating pressures.

According to one aspect of the utility model, the valve body is provided with a connecting block sliding groove which is arranged along the extending direction of the exhaust pipe, the pressure regulating switch further comprises a switch main body and a connecting rod hinged between the switch main body and the connecting block, the switch main body slides between a first position and a second position, and under the condition that the switch main body is located at the first position, the inner valve core and the second exhaust port are arranged at intervals so as to open the second exhaust port; and under the condition that the switch main body is positioned at the second position, the inner valve core blocks the second exhaust port. The connecting block spout can provide the sliding guide effect for the connecting block, prevents that the connecting block from appearing rocking, and the slip of switch main part can drive the inner valve core shutoff on the second gas vent, because the sectional area of first gas vent and second gas vent is different, can make the air-vent valve maintain different regulated pressure.

According to an aspect of the present invention, when the second exhaust port is opened, a first included angle α is formed between the connecting rod and the axis of the exhaust pipe₁Under the condition that the inner valve core blocks the second exhaust port, a second included angle alpha is formed between the connecting rod and the axis of the exhaust pipe₂Said second angle α₂Is smaller than the first included angle alpha₁. Through the removal switch main part, the drive connecting rod removes, and the natural length of connecting rod does not change, and the change with the axis angle can make the vertical height of connecting rod different to promote the connecting block and move down, promote the inner valve core and realize the pressure regulating.

According to an aspect of the present invention, the valve body is provided with a switch body sliding groove communicated with the connecting block sliding groove, the switch body sliding groove is located above the connecting block sliding groove, a lower portion of the switch body is accommodated in the switch body sliding groove, a side wall of the switch body sliding groove is recessed inwards to form a guide groove, the switch body is connected with the connecting rod through a switch body pivot shaft, an end portion of the switch body pivot shaft is slidably clamped in the guide groove, and the guide groove is arranged in parallel to the top surface of the valve body. Switch main part spout can hold the switch main part, and the guide way can provide fixed moving route for the switch main part to can restrict the ascending displacement of switch main part from top to bottom, and promote connecting rod and connecting block, the guide way has direction and limiting displacement promptly.

According to an aspect of the present invention, the switch main body is provided with limiting bosses at both ends in the sliding direction thereof, the limiting bosses are accommodated in the switch main body sliding grooves, and the corresponding limiting bosses are attached to the inner walls of the switch main body sliding grooves corresponding thereto when the switch main body is located at the first position or the second position. The limit boss can provide a displacement range for the displacement of the switch main body, and when the limit boss is attached to the inner wall of the sliding groove of the switch main body, the switch main body cannot continue to move along the direction, and meanwhile, a certain reminding function is provided for a user.

According to one aspect of the utility model, the valve body comprises an outer valve body and an inner insert, the outer valve body is provided with an outer valve inner cavity, the top of the exhaust pipe is accommodated in the outer valve inner cavity, the inner insert is sleeved in the outer valve inner cavity, the inner insert is approximately cylindrical, the outer valve core is fixed on the top of the inner insert, and the outer valve core protrudes and extends towards the exhaust pipe. So set up, make each part connect comparatively compactly, it is less to occupy the volume, can save space.

According to an aspect of the utility model, the inner valve core comprises a head part, a rod part, an inner valve transition part and a guide part which are sequentially arranged from top to bottom, the diameter of the head part is larger than that of the rod part, the diameter of the rod part is larger than that of the guide part, the diameter of the inner valve transition part is gradually reduced along the direction from the rod part to the guide part, the diameter of the rod part is larger than that of the second exhaust port, and the diameter of the guide part is smaller than that of the second exhaust port, so that the inner valve transition part can block the second exhaust port. So set up, interior valve excess portion can the shutoff second gas vent, when pressure regulating switch drive inner valve core removed, can make the air-vent valve have different exhaust sectional areas to can make the air-vent valve maintain different regulated pressure.

According to an aspect of the utility model, the valve core assembly further comprises a return spring, the return spring is sleeved on the periphery of the rod part and compressed between the head part and the outer valve core; the reset spring can provide certain restoring force when the switch main body moves left and right, so that the inner valve core restores to the original position, and pressure conversion is realized. The valve core assembly further comprises a sealing ring, the rod part is provided with a sealing ring accommodating groove, and the sealing ring is accommodated in the sealing ring accommodating groove and is tightly pressed between the sealing ring accommodating groove and the inner wall of the outer valve core. The sealing ring can seal the gap between the inner valve core and the outer valve core and prevent gas from leaking out of the gap between the inner valve core and the outer valve core.

The outer valve core comprises an outer valve transition part, the cross section of the outer valve transition part is gradually increased from the bottom of the outer valve transition part to the direction of the top of the outer valve transition part, the diameter of the top of the outer valve transition part is larger than that of the first exhaust port, and the diameter of the bottom of the outer valve transition part is smaller than that of the first exhaust port. The diameters of the first exhaust port and the second exhaust port are different, namely the sectional areas are different, namely the exhaust sectional areas are different, and the pressure regulating function is realized through the matching of the inner valve core and the outer valve core.

In an exemplary embodiment of the present disclosure, a tapered opening is provided at a top portion of the exhaust pipe, and a diameter of the tapered opening is gradually reduced from a top wall of the exhaust pipe to a middle portion of the exhaust pipe to match an outer peripheral wall of the outer valve transition portion. So set up, can make the tip of outer case and blast pipe laminate each other, guarantee the leakproofness, realize holding out the pressure.

According to another aspect of the present invention, there is provided a pot lid comprising a pot lid body and a pressure regulating valve as described above.

According to another aspect of the utility model, a pot is provided, which comprises a pot body and a pot cover as described above.

The pressure regulating valve, the cooker cover and the cooker have the following beneficial effects: the pressure regulating valve provided by the disclosure comprises a connecting block, wherein an inner valve core can slide relative to an outer valve core under the pushing of the connecting block, so that the second exhaust port can be selectively blocked, and the pressure regulating valve can maintain different regulating pressures.

Drawings

The above and/or other objects and advantages of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a longitudinal sectional view of a pressure regulating valve in a first operating state according to an exemplary embodiment of the present disclosure.

Fig. 2 is a longitudinal sectional view of the pressure regulating valve of fig. 1 in a second operating state.

Fig. 3 is a longitudinal sectional view of the exhaust pipe in fig. 1.

Fig. 4 is a block diagram of the voltage regulating switch of fig. 1.

Fig. 5 is a longitudinal cross-sectional view of the valve sleeve of fig. 1.

Fig. 6 is a longitudinal sectional view showing a coupled state of the base, the insert, and the outer valve core of fig. 1.

Fig. 7 is a longitudinal sectional view of the inner core of fig. 1.

Reference numerals:

100. an outer valve body; 200. A valve housing;

230. a switch main body chute; 240. A connecting block chute;

250. a guide groove; 300. An inner valve core;

400. an inner embedded piece; 410. An inner cavity of the outer valve;

500. an outer valve core; 510. An outer valve element through hole;

530. an outer valve transition; 540. A return spring;

600. an exhaust pipe; 620. A first exhaust port;

610. a second exhaust port; 630. A tapered opening;

700. a voltage regulating switch; 710. A switch main body;

720. a connecting rod; 730. Connecting blocks;

740. a limiting boss; 750. A switch body pivot shaft;

800. a seal ring; alpha is alpha₁A first included angle;

α₂and a second included angle.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the aspects of the present invention are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The present invention provides a pressure regulating valve, a pot cover and a pot, and specific structures of the pressure regulating valve, the pot cover and the pot according to exemplary embodiments of the present invention will be described in detail below with reference to fig. 1 to 7. In the drawings, like reference numerals refer to like parts throughout.

The pot can comprise a pot body and a pot cover which can cover the opening of the pot body, and the pot cover can comprise a pot cover main body and a pressure regulating valve arranged on the pot cover main body.

Fig. 1 is a longitudinal sectional view of a pressure regulating valve in a first operating state according to an exemplary embodiment of the present disclosure. Fig. 2 is a longitudinal sectional view of the pressure regulating valve of fig. 1 in a second operating state. Fig. 3 is a longitudinal sectional view of the exhaust pipe in fig. 1.

Referring to fig. 1 to 3, the present invention provides a pressure regulating valve which may be connected to an exhaust pipe 600. Specifically, the exhaust pipe 600 may have a first exhaust port 620 and a second exhaust port 610 communicating with each other, and a sectional area of the first exhaust port 620 is larger than a sectional area of the second exhaust port 610, the first exhaust port 620 being disposed at a top end of the exhaust pipe 600, and the second exhaust port 610 being located below the first exhaust port 620.

With continued reference to fig. 1 and 2, the pressure regulating valve provided by the present disclosure may include a valve body, a valve core assembly, and a pressure regulating switch 700, wherein the valve core assembly may be sleeved inside the valve body. The valve core assembly may include an inner valve core 300 and an outer valve core 500 sleeved with each other, the outer valve core 500 may be fixed on the valve body, and the outer valve core 500 is blocked on the first exhaust port 620. The outer valve element 500 may be provided with an outer valve element through hole 510 extending in an extending direction of the exhaust pipe 600, and the inner valve element 300 may be slidably fitted in the outer valve element through hole 510 to selectively block the second exhaust port 610. The pressure regulating switch 700 may be located above the valve core assembly, the pressure regulating switch 700 may include a connection block 730 slidably disposed in the valve body along an extending direction of the exhaust pipe 600, and the connection block 730 may abut against a top of the inner valve core 300 to drive the inner valve core 300 to move relative to the exhaust pipe 600 through movement of the connection block 730.

The pressure regulating valve provided by the present disclosure includes a pressure regulating switch 700, the pressure regulating switch 700 includes a connecting block 730 disposed above the inner valve element 300 and abutting against the top of the inner valve element 300, the connecting block 730 can slide up and down along the extending direction of the exhaust pipe 600, so as to drive the inner valve element 300 to slide up and down along the extending direction of the exhaust pipe 600 relative to the outer valve element 500, thereby enabling the pressure regulating valve to have different working states.

Specifically, referring to fig. 1 and 3, when the pressure regulating valve is in the first operating state, the connecting block 730 is in the first operating position, and the outer spool 500 blocks the first exhaust port 620. In an initial state, the pressure regulating valve may support the outer spool 500 on the exhaust pipe 600 by gravity to block the first exhaust port 620 through the outer spool 500, and the sectional area of the first exhaust port 620 may be S1, when the inner spool 300 is spaced apart from the second exhaust port 610, that is, the second exhaust port 610 is in an open state. The gas in the pot can enter the exhaust pipe 600 from bottom to top through the exhaust pipe 600 to provide upward thrust for the pressure regulating valve. In the initial state, the pressure in the cooker is not more than P1, G is the gravity of the pressure regulating valve, and G is P1S 1, namely the thrust of the gas in the cooker pushing the pressure regulating valve upwards is less than the gravity of the pressure regulating valve.

When the pressure Ps in the pot is increased to be greater than P1 and the pressure F1 in the pot is Ps × S1 > G, the upward pushing force of the gas in the pot overcomes the gravity of the pressure regulating valve to lift the pressure regulating valve, at this time, the outer valve element 500 moves upward along the extending direction of the exhaust pipe 600 to open the first exhaust port 620, the gas in the pot can be exhausted from the first exhaust port 620 to reduce the pressure in the pot until the pressure in the pot is reduced to P1, and the first exhaust port 620 is closed again, so that the pressure in the pot can be maintained below P1.

Referring to fig. 2 and 3, the pressure regulating valve is in the second operating state, and the position of the connecting block 730 is moved downward compared to fig. 1, that is, the connecting block 730 is located at the second operating position, the inner spool 300 is moved downward by the pushing of the connecting block 730, and the inner spool 300 is blocked at the second exhaust port 610, and the sectional area of the second exhaust port 610 may be S2, where S2 < S1. In the initial state, the inner valve core 300 is blocked at the second exhaust port 610, the pressure in the pot is not more than P2, P2 is more than P1, G is the gravity of the pressure regulating valve, G is P2S 2, i.e. the thrust of the gas in the pot pushing the pressure regulating valve upwards is less than the gravity of the pressure regulating valve itself.

When the pressure Px in the pot is increased to be greater than P2, and the pressure F2 in the pot is Px S2 > G, the upward pushing force of the gas in the pot will overcome the gravity of the pressure regulating valve to lift the pressure regulating valve, at this time, the inner valve core 300 will move upward along the extending direction of the exhaust pipe 600 to open the second exhaust port 610, since Px > P2 and P2 > P1, the outer valve core 500 will also be lifted at this time to open the first exhaust port 620, the gas in the pot can be exhausted out of the pot through the exhaust pipe 600 until the pressure in the pot drops to P2, so that the pressure in the pot can be maintained below P2.

In the embodiment of the present invention, the pressure regulating switch 700 regulates the pressure threshold by changing the exhaust area, i.e. the exhaust cross-sectional area corresponding to the regulating valve in the first operating state is S1, and the exhaust cross-sectional area corresponding to the regulating valve in the second operating state is S2.

Alternatively, referring to fig. 4, the pressure regulating switch 700 may further include a switch body 710 and a connecting rod 720 hinged between the switch body 710 and the connecting block 730, the switch body 710 may slide between a first position and a second position, and in the case that the switch body 710 is located at the first position, the inner valve core 300 is spaced from the second exhaust port 610 to open the second exhaust port 610, that is, the pressure regulating valve is in the first operating state, as shown in fig. 1. When the switch body 710 is at the second position, the inner valve body 300 blocks the second exhaust port 610, i.e., the pressure regulating valve is in the second operating state, as shown in fig. 2.

As an example, the valve body is provided with a connecting block sliding groove 240, and the connecting block sliding groove 240 is provided along the extending direction of the exhaust pipe 600. The switch main body 710 can be in a square plate shape, the connecting rod 720 can be in a long strip shape, the pressure regulating switch 700 sequentially comprises the switch main body 710, the connecting rod 720 and the connecting block 730 from top to bottom, the connecting block 730 is located in the connecting block sliding groove 240, and the top of the inner valve core 300 can be abutted to the lower side of the connecting block 730.

When the switch body 710 is at the first position, a gap is left between the inner valve element 300 and the second exhaust port 610, at this time, the outer valve element 500 blocks the first exhaust port 620, and the included angle between the connecting rod 720 and the axis of the exhaust pipe 600 is a first included angle α₁。

When the switch body 710 moves to the second position, the upper end of the connecting rod 720 moves to the left under the driving of the switch body 710, that is, the connecting rod 720 swings counterclockwise around the pivot shaft at the lower end, and the included angle between the connecting rod 720 and the axis of the exhaust pipe 600 is the second included angle α₂Second angle of inclination alpha₂Less than the first angle alpha₁。

It can be understood that, when the switch main body 710 moves from the first position to the second position, the longitudinal length of the connecting rod 720 increases, so that the longitudinal length of the connecting rod 720 becomes larger as the included angle becomes smaller without the switch main body 710 separating from the top of the valve body, that is, the connecting block 730 has a downward displacement, so that the inner valve core 300 can be pushed to move downward to push the inner valve core 300 to move downward to block the second exhaust port 610.

Since the cross-sectional area of the first exhaust port 620 is different from the cross-sectional area of the second exhaust port 610, the pressure regulating valve may have a pressure regulating function in which the exhaust cross-sectional area of the pressure regulating valve in the first operation state is different from the exhaust cross-sectional area of the pressure regulating valve in the second operation state.

It should be noted that during the voltage regulation, in the second placeWhen the two exhaust ports 610 are opened, i.e. the switch body 710 is at the first position, a first included angle α is formed between the connecting rod 720 and the axis of the exhaust pipe 600₁(ii) a When the inner valve element 300 blocks the second exhaust port 610, i.e. the pressure regulating switch is in the second position, a second included angle α is formed between the connecting rod 720 and the axis of the exhaust pipe 600₂Second angle of inclination alpha₂Less than the first angle alpha₁。

With continued reference to the drawings, in order to define the moving range of the switch main body 710, both ends of the switch main body 710 in the sliding direction thereof may be provided with limit bosses 740. Specifically, the valve body may be provided with a switch main body sliding groove 230 communicating with the connection block sliding groove 240, the switch main body sliding groove 230 is located above the connection block sliding groove 240, and the lower portion of the switch main body 710 may be accommodated in the switch main body sliding groove 230, that is, the limit boss 740 is accommodated in the switch main body sliding groove 230.

Further, the side wall of the switch body slide groove 230 is recessed inward to form a guide groove 250, the switch body 710 is connected with the connecting rod 720 through a switch body pivot shaft 750, the end of the switch body pivot shaft 750 is slidably clamped in the guide groove 250, and the guide groove 250 is arranged parallel to the top surface of the valve body. The switch main body 710 is prevented from being separated from the valve body in the extending direction of the exhaust pipe 600 by providing the guide groove 250. The switch body pivot 750 may be cylindrical with ends located in the guide slots 250 to provide a guide for movement of the switch body 710.

In this embodiment, the top surface of the valve body is parallel to the horizontal plane, but not limited thereto, the top surface of the valve body may have a predetermined included angle with the horizontal plane.

As an example, with continued reference to fig. 1 and 2, the length of the switch main body 710 in its sliding direction may be greater than the length of the switch main body chute 230 in the sliding direction, and therefore, the switch main body 710 may overlap the outside of the switch main body chute 230, and the switch main body chute 230 can support the underside of the switch main body 710. Optionally, the switch body 710 may cover the entire switch body chute 230, which may prevent water or other debris from entering the pressure regulating valve and damaging the internal structure. The length of the limit boss 740 in the sliding direction may be smaller than the length of the switch main body sliding groove 230 in the sliding direction so that the switch main body 710 can slide with respect to the valve body.

When the switch main body 710 is located at the first position or the second position, the limit boss 740 is attached to the inner wall of the switch main body slide groove 230 corresponding thereto. For example, as shown in fig. 1, when the pressure regulating valve is in the first operating state, the switch body 710 is in the first position, and the limit boss 740 is attached to the right side wall surface of the switch body slide groove 230. When the pressure regulating valve is in the first working state, the switch main body 710 slides leftwards to be located at the second position, and the limit boss 740 is attached to the left side wall of the switch main body sliding groove 230.

For example, the limit boss 740 may be a thin plate fixed below the switch main body 710, and when the switch main body 710 slides left and right, the switch main body 710 may be accurately moved between the first position and the second position by the limit between the end of the limit boss 740 and the switch main body sliding groove 230, thereby improving the adjustment accuracy of the pressure regulating switch 700. The limit boss 740 may be integrally formed with the switch main body 710, or may be formed separately and assembled together.

Optionally, in order to reduce the manufacturing cost of the valve body, the valve body may include an outer valve body and an inner insert 400, the outer valve body has an outer valve cavity 410, the top of the exhaust pipe 600 is received in the outer valve cavity 410, the inner insert 400 is sleeved in the outer valve cavity 410, the inner insert 400 is substantially cylindrical, the top of the exhaust pipe 600 may be received in the inner insert 400, the outer valve element 500 is fixed to the top of the inner insert 400, and the outer valve element 500 protrudes and extends toward the exhaust pipe 600. The inner insert 400 can be in contact with high-temperature hot gas in a pot, so that the inner insert can be made of high-temperature-resistant materials, and the outer valve body can be made of common materials, so that the manufacturing cost of the pressure regulating valve is reduced to a certain extent.

By way of example, the outer valve body may include a base 100 and a valve housing 200, the valve housing 200 may be generally cylindrical, the base 100 may have external threads, and the valve housing 200 may have internal threads that mate with the base 100, i.e., the base 100 and the valve housing 200 may be threadably coupled together and may be removable from one another. The outer core 500 and the inner insert 400 may be coupled by injection molding. The insert 400 may be sleeved inside the base 100.

The outer valve body is formed by assembling the base 100 and the valve sleeve 200, so that the die cost of the base 100 and the valve sleeve 200 can be reduced, and the manufacturing cost of the outer valve body is further reduced.

In order to realize the pressure regulating function of the pressure regulating valve, the pressure regulating valve has different exhaust areas, the outer valve element 500 is blocked on the first exhaust port 620 by moving the switch main body 710 to be located at the first position; the switch body 710 is moved to the second position, so that the connecting block 730 moves downward and pushes the inner valve element 300 to move downward to block the second exhaust port 610, and the sectional area of the first exhaust port 620 is different from that of the second exhaust port 610, thereby realizing the pressure regulating function of the pressure regulating valve.

In order to improve the pressure regulating accuracy of the pressure regulating valve, the diameter of the outer valve element 500 tends to be gradually reduced from top to bottom, the outer valve transition part 530 may be formed in a tapered shape, the outer valve element 500 may include the outer valve transition part 530, the outer valve transition part 530 may be configured such that a cross section of the outer valve transition part 530 is gradually increased from a bottom thereof to a top thereof, a top diameter of the outer valve transition part 530 is larger than a diameter of the first exhaust port 620, a bottom diameter of the outer valve transition part 530 is smaller than the diameter of the first exhaust port 620, and the outer valve element 500 may be partially inserted into the exhaust pipe 600 such that the outer valve transition part 530 may be blocked at the first exhaust port 620. During the use of the pressure regulating valve, the outer valve transition part 530 is worn out by contacting the exhaust pipe 600 several times, and the outer valve transition part 530 is tapered, so that it can be stably sealed on the first exhaust port 620 even if it is worn out, thereby improving the safety of the pressure regulating valve.

Further, the top of exhaust pipe 600 is provided with tapered opening 630, and tapered opening 630 gradually reduces from the top wall of exhaust pipe 600 to its diameter in the middle part of exhaust pipe 600 in order to match with the periphery wall of outer valve transition portion 530, so set up, when outer valve core 500 blocks first exhaust port 620, has increased the area of contact of outer valve transition portion 530 with exhaust pipe 600 to the operating stability of pressure-regulating valve has further been improved.

In order to further improve the safety of the pressure regulating valve, the inner spool 300 may include an inner valve transition portion 303, a top diameter of the inner valve transition portion 303 is larger than a sectional area of the second exhaust port 610, and a bottom diameter of the inner valve transition portion 303 is smaller than the sectional area of the second exhaust port 610, so as to be able to stably block the second exhaust port 610.

As an example, the inner valve core 300 may include a head portion 301, a rod portion 302, an inner valve transition portion 303, and a guide portion 304, which are sequentially disposed from top to bottom, wherein a diameter of the head portion 301 is greater than a diameter of the rod portion 302, a diameter of the rod portion 302 is greater than a diameter of the guide portion 304, a diameter of the inner valve transition portion 303 is gradually reduced along a direction from the rod portion 302 to the guide portion 304, the diameter of the rod portion 302 is greater than a diameter of the second exhaust port 610, and the diameter of the guide portion 304 is smaller than the diameter of the second exhaust port 610, so that the inner valve transition portion 303 can block the second exhaust port 610.

With continued reference to fig. 1, 2, 6, and 7, the outer spool 500 may have a central through hole for the inner spool 300 to pass through, as an example, the central through hole may be a stepped hole. The diameter of the large hole of the stepped hole can be the same as that of the head 301, so that the head 301 can slide along the extending direction of the stepped hole, the diameter of the small hole of the stepped hole can be equal to that of the rod portion 302, transverse shaking along the stepped hole is avoided, and the sliding precision of the inner valve core 300 is further improved.

In order to further improve the connection stability between the outer valve core 500 and the inner insert 400, the outer circumferential wall of the outer valve core 500 is provided with an annular groove extending along the circumferential direction thereof, the top of the inner insert 400 is provided with a convex ring extending in the radial direction, and the convex ring is matched with the annular groove, so that the outer valve core 500 is firmly fixed with the inner insert 400.

In order to enable the inner valve core 300 to automatically return to the original position when the switch main body 710 returns to the original position, the valve core assembly further comprises a return spring 540, and the return spring 540 is sleeved on the outer periphery of the rod portion 302 and compressed between the head portion 301 and the outer valve core 500. When the switch main body 710 is located at the first position, the top end of the return spring 540 may abut against the lower portion of the head portion 301, and the bottom end of the return spring 540 may abut against the bottom wall of the stepped hole of the outer valve core 500. Moving the switch body 710 to the left to its second position, the inner spool 300 moves downward and the return spring 540 further compresses, and when the switch body 710 is pulled back, the head 301 will move upward under the urging of the return spring 540, thereby moving the inner spool 300 upward and away from the second exhaust port 310.

In order to prevent gas leakage between the inner valve core 300 and the outer valve core 500, the valve core assembly may further include a sealing ring 800, the rod portion 302 is provided with a sealing ring receiving groove, and the sealing ring 800 is received in the sealing ring receiving groove and compressed between the sealing ring receiving groove and the inner wall of the outer valve core 500.

As described above, the pressure regulating valve of the present invention is realized by the exhaust cross-sectional area. The process of changing the sectional area of the exhaust gas by the pressure regulating switch 700 will be described in detail below. As shown, the diameter of the second exhaust port 610 is smaller than the diameter of the first exhaust port 620, and the diameter of the portion of the inner spool 300 that is larger than the diameter of the first exhaust port 620, i.e., the diameter of the stem portion 302 is larger than the diameter of the first exhaust port 620. When the inner spool 300 enters the second exhaust port 610 and blocks the second exhaust port 610 by the pushing of the pressure regulating switch 700, the cross-sectional area of the second exhaust port 610 is the exhaust area S2. When the switch main body 710 is located at the first position, the inner valve element 300 and the outer valve transition part 530 cooperate to block the upper part of the first exhaust port 620, the exhaust area at this time is the cross-sectional area of the first exhaust port 620, and the cross-sectional area of the first exhaust port 620 is S1, because the diameter of the second exhaust port 610 is smaller than the diameter of the first exhaust port 620, as mentioned above, S2 is smaller than S1, and P2 is larger than P1, that is, when only the outer valve element 500 blocks the first exhaust port 620, the regulated pressure in the pot is P1, and a low pressure state can be achieved; when the inner valve element 300 blocks the second exhaust port 610, the regulated pressure in the pot is P2, which may be a high pressure state.

The working process of the whole pressure regulating valve is as follows: as shown in fig. 2 and 3, when the pressure regulating switch 700 is located at the rightmost side of the valve housing 200, at this time, the connecting block 730 is at the highest position under the action of the connecting rod 720, the return spring 540 is at the relaxed state, the inner spool 300 is at the highest point, the inner spool 300 and the outer valve transition part 530 are matched to block the first exhaust port 620, the exhaust area is the cross-sectional area of the first exhaust port 620, the pressure limiting valve is at a low-pressure position, when the gas pressure is higher than the predetermined pressure, the predetermined pressure is the pressure at which the pressure regulating valve can be raised against the gravity of the pressure regulating valve, and at this time, the high-pressure gas can push the pressure regulating valve to move upwards from the tapered opening 630 and exhaust from the tapered opening 630.

When the pressure regulating switch 700 is located at the leftmost side of the valve housing 200, at this time, the connecting block 730 is located at the lowest position under the action of the connecting rod 720, the return spring 540 is in a compressed state, the inner valve core 300 is located at the lowest point, the inner valve core 300 blocks the second exhaust port 610, the exhaust area is the cross-sectional area of the second exhaust port 610, at this time, the pressure limiting valve is in a high-pressure gear position, when the gas pressure is higher than a predetermined pressure, at this time, the high-pressure gas can push the pressure regulating valve to move upwards from the upper end of the second exhaust port 610 and exhaust gas from the second exhaust port 610, it should be noted that the pressure regulating valve moves upwards, the upper inner valve core 300 and the outer valve transition part 530 change the state of originally blocking the first exhaust port 620, and after the blocking state is released, gas can be exhausted from the first exhaust port 620.

The utility model also comprises a pot cover and a pot, wherein the pot cover comprises a pot cover main body and the pressure regulating valve. The cooker comprises a cooker body and the cooker cover.

In summary, the pressure regulating valve of the present invention includes a base 100, a valve sleeve 200 sleeved with the base 100, and a valve core assembly located between the base 100 and the valve sleeve 200, wherein the valve core assembly includes an outer valve core 500 and an inner valve core 300, and the pressure regulating valve further includes a pressure regulating switch 700, and the pressure regulating switch 700 can move left and right to push the inner valve core 300 to move up and down, so as to change the exhaust area of the gas and realize the conversion between high pressure and low pressure. The pressure regulating valve has the advantages of being central in structural gravity, easy to operate, simple in structure, easy to assemble, disassemble and clean, not easy to lose effectiveness after being used for a long time and the like.

In the description of the present disclosure, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the disclosure, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the disclosure.

In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

Embodiments of the present application are described above with reference to the drawings. However, it is to be understood that the disclosed embodiments are merely intended to be examples that may be embodied in various and alternative forms. Specific structural and functional details disclosed are not to be interpreted as limiting, but as a representative basis for teaching one skilled in the art how to practice the disclosed concepts.

Claims (11)

1. A pressure regulating valve that is connected to an exhaust pipe (600), said exhaust pipe (600) having a first exhaust port (620) and a second exhaust port (610) that communicate with each other, and a sectional area of said first exhaust port (620) being larger than a sectional area of said second exhaust port (610), said first exhaust port (620) being disposed at a top end of said exhaust pipe (600), said second exhaust port (610) being located below said first exhaust port (620), said pressure regulating valve comprising:

the valve body is provided with a valve body,

the valve core assembly is sleeved inside the valve body and comprises an inner valve core (300) and an outer valve core (500) which are sleeved with each other, the outer valve core (500) is fixed on the valve body, the outer valve core (500) blocks the first exhaust port (620), the outer valve core (500) is provided with an outer valve core through hole (510) extending along the extension direction of the exhaust pipe (600), the inner valve core (300) is slidably sleeved in the outer valve core through hole (510) to selectively block the second exhaust port (610),

pressure regulating switch (700) is located the top of case subassembly, pressure regulating switch (700) include along the extending direction slidable of blast pipe (600) sets up in connecting block (730) in the valve body, connecting block (730) support in the top of inner valve core (300) is with passing through the removal drive of connecting block (730) inner valve core (300) for blast pipe (600) remove.

2. The pressure regulating valve according to claim 1, wherein said valve body is provided with a connecting block sliding groove (240), said connecting block sliding groove (240) is provided along an extending direction of said exhaust pipe (600), said pressure regulating switch (700) further comprises a switch main body (710) and a connecting rod (720) hinged between said switch main body (710) and said connecting block (730), said switch main body (710) slides between a first position and a second position, and in a case where said switch main body (710) is located at said first position, said inner spool (300) is provided at an interval from said second exhaust port (610) to open said second exhaust port (610); the inner valve body (300) blocks the second exhaust port (610) when the switch main body (710) is in the second position.

3. The pressure regulating valve according to claim 2, characterized in that said connecting rod (720) and the axis of said exhaust pipe (600) form a first angle α with said second exhaust port (610) open₁When the inner valve core (300) blocks the second exhaust port (610), a second included angle alpha is formed between the connecting rod (720) and the axis of the exhaust pipe (600)₂Said second angle α₂Is smaller than the first included angle alpha₁。

4. The pressure regulating valve according to claim 2, characterized in that said valve body is provided with a switch body slide groove (230) communicating with said connecting block slide groove (240), said switch body slide groove (230) is located above said connecting block slide groove (240), a lower portion of said switch body (710) is received in said switch body slide groove (230), a side wall of said switch body slide groove (230) is recessed inwardly to form a guide groove (250), said switch body (710) and said connecting rod (720) are connected by a switch body pivot shaft (750), an end portion of said switch body pivot shaft (750) is slidably caught in said guide groove (250), and said guide groove (250) is provided in parallel to said valve body top surface.

5. The pressure regulating valve according to claim 4, characterized in that both ends of said switch body (710) in the sliding direction thereof are provided with limit bosses (740), said limit bosses (740) are accommodated in said switch body slide grooves (230), and said limit bosses (740) are fitted on the inner walls of said switch body slide grooves (230) corresponding thereto in the case where said switch body (710) is located at said first position or said second position.

6. The pressure regulating valve according to any one of claims 1-5, wherein said valve body comprises an outer valve body and an inner insert (400), said outer valve body has an outer valve cavity (410), said inner insert (400) is sleeved in said outer valve cavity (410), said inner insert (400) is substantially cylindrical, the top of said exhaust pipe (600) is accommodated in said inner insert (400), said outer valve core (500) is fixed on the top of said inner insert (400), and said outer valve core (500) protrudes and extends towards said exhaust pipe (600).

7. The pressure regulating valve according to claim 6, wherein said inner spool (300) comprises a head portion (301), a stem portion (302), an inner valve transition portion (303) and a guide portion (304) arranged in this order from top to bottom, the diameter of said head portion (301) is larger than the diameter of said stem portion (302), the diameter of said stem portion (302) is larger than the diameter of said guide portion (304), the diameter of said inner valve transition portion (303) is gradually reduced in the direction from said stem portion (302) to said guide portion (304), the diameter of said stem portion (302) is larger than the diameter of said second exhaust port (610), and the diameter of said guide portion (304) is smaller than the diameter of said second exhaust port (610) so that said inner valve transition portion (303) can block said second exhaust port (610).

8. The pressure regulating valve according to claim 7, wherein said spool assembly further comprises a return spring (540), said return spring (540) being sleeved on the outer periphery of said stem portion (302) and compressed between said head portion (301) and said outer spool (500); and/or the like, and/or,

the valve core assembly further comprises a sealing ring (800), the rod part (302) is provided with a sealing ring accommodating groove, and the sealing ring (800) is accommodated in the sealing ring accommodating groove and is tightly pressed between the sealing ring accommodating groove and the inner wall of the outer valve core (500); and/or the like, and/or,

the outer valve core (500) comprises an outer valve transition part (530), the cross section of the outer valve transition part (530) is gradually increased from the bottom of the outer valve transition part to the top of the outer valve transition part, the diameter of the top of the outer valve transition part (530) is larger than that of the first exhaust port (620), and the diameter of the bottom of the outer valve transition part (530) is smaller than that of the first exhaust port (620), so that the outer valve transition part can block the first exhaust port.

9. The pressure regulating valve according to claim 8, characterized in that the top of said exhaust pipe (600) is provided with a tapered opening (630), and said tapered opening (630) is gradually reduced in diameter from the top wall of said exhaust pipe (600) toward the middle of said exhaust pipe (600) to match the outer peripheral wall of said outer valve transition portion (530).

10. A lid for a pot, characterized in that it comprises a lid body and a pressure regulating valve according to any one of claims 1-9.

11. A pot, characterized in that it comprises a pot body and a pot cover according to claim 10.

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