Pressure-adjustable pressure release valve and pot cover

Abstract

The utility model discloses a pressure-adjustable pressure release valve and a pot cover, and relates to the technical field of pressure cookers, the pressure-adjustable pressure release valve comprises a pot cover body, the inner wall of the top of the pot cover body is provided with a pressure release hole, the pot cover body is provided with a handle, and the top of the pot cover body is provided with two sliding chutes. When the pressure cooker is used and pressure needs to be adjusted, the two adjusting plates are driven by the adjusting mechanism to move back to back, the two adjusting springs are stretched when the two sliding plates move back to back, and therefore the two sliding plates are pulled through the elastic effect of the adjusting springs, and when the pressure in the pressure cooker is high and pressure discharging is needed, the two adjusting springs are pulled through the elastic effect of the adjusting springs. The adjusting plate drives the valve body to move upwards, then the two sliding plates are driven to move synchronously and oppositely under the action of the two connecting rods, due to the fact that pulling force on the sliding plates is different when the adjusting plate is located at different positions, the pulling force exerted by the sliding plates and the connecting rods can be adjusted when the valve body moves upwards, the adjusting function is achieved, adjusting operation is easy, and the pressure adjusting effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure cookers, in particular to a pressure-adjustable pressure relief valve and a cooker cover. Background Art

[0002] Pressure cookers utilize high pressure to increase cooking temperatures, significantly shortening cooking times. However, existing pressure relief valves used in pressure cookers have fixed pressure limits and lack an adjustable function. Different foods require different cooking pressures, so existing pressure relief valves cannot meet the cooking requirements of a wide variety of ingredients.

[0003] Patent publication number CN209977358U discloses an adjustable pressure relief valve for pressure cookers. By freely combining sleeves of different weights and numbers and placing them in a cylindrical seat, the weight of the pressure relief valve can be changed, thereby adjusting the pressure limit value of the pressure relief valve in multiple stages. However, in actual use, the pressure limit value of the pressure relief valve cannot be adjusted arbitrarily, and the sleeves are prone to loss after long-term use, resulting in low practicality. To address the above problems, a pressure-adjustable pressure relief valve and a cooker cover are proposed. Utility Model Content

[0004] The purpose of this application is to provide a pressure-adjustable pressure relief valve and a pot cover to solve the problems raised in the above-mentioned background technology that, in actual use, the pressure limit value of the pressure relief valve cannot be arbitrarily adjusted, and the collar is prone to loss after long-term use, resulting in low practicality.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a pressure-adjustable pressure relief valve, comprising a valve body and a valve stem, the valve stem seal being arranged in the pressure relief hole, the valve body being adapted for the valve stem, two connecting rods being rotatably installed on the circumferential outer wall of the valve body, slides being slidably installed in the two slide grooves, the other ends of the two connecting rods being rotatably installed on the tops of the two slides, fixed frames being fixedly installed in the two slide grooves, the two fixed frames being adapted for the two slides respectively, and adjustment plates being slidably installed in the two slide grooves through adjustment mechanisms, telescopic rods being provided on the sides of the two adjustment plates, the other ends of the two telescopic rods being fixedly installed on the sides of the two slides respectively, and adjustment springs being sleeved on the two telescopic rods, one end of the two adjustment springs being fixedly installed on the sides of the two adjustment plates respectively, and the other ends of the two adjustment springs being fixedly installed on the sides of the two slides respectively.

[0006] Preferably, the adjustment mechanism includes two square sliders, which are slidably installed in the adjustment cavity through a sliding assembly, and connecting plates are fixedly installed on the opposite sides of the two square sliders and the two adjustment plates.

[0007] Preferably, the sliding assembly includes a bidirectional lead screw. The two ends of the two bidirectional lead screws are respectively rotatably installed on the opposite inner walls of the adjustment cavity. The two square sliders are both threadedly installed on the bidirectional lead screw. A rotation unit is arranged on the bidirectional lead screw, and a limiting unit adapted to the bidirectional lead screw is arranged in the circular hole.

[0008] Preferably, the rotation unit includes an operating rod. The operating rod is rotatably installed in the operating hole. The bottom end of the operating rod extends into the adjustment cavity and is fixedly sleeved with a first bevel gear. A second bevel gear is fixedly sleeved on the bidirectional lead screw. The first bevel gear is meshed and installed with the second bevel gear.

[0009] Preferably, the top end of the operating rod extends outside the pot lid body and is fixedly installed with a knob.

[0010] Preferably, the limiting unit includes a fixing bolt. The fixing bolt is threadedly installed in the circular hole. The fixing bolt is adapted to the bidirectional lead screw.

[0011] A pot lid includes a pot lid body and further includes the above pressure-adjustable pressure relief valve. A pressure relief hole is opened on the inner wall of the top of the pot lid body. A handle is arranged on the pot lid body. Two sliding grooves are opened on the top of the pot lid body. An adjustment cavity is opened in the pot lid body. The adjustment cavity is communicated with the two sliding grooves through connection holes. A circular hole and an operating hole are opened on the inner wall of the top of the adjustment cavity.

[0012] In summary, the technical effects and advantages of the present utility model are as follows:

[0013] 1. In the present utility model, when it is necessary to adjust the pressure, the two adjusting plates are driven to move away from each other by the adjusting mechanism. When the two sliding plates move away from each other, the two adjusting springs are respectively stretched. Thus, an acting force is applied to the two sliding plates through the elastic action of the adjusting springs. When the pressure in the pressure cooker is relatively high and pressure needs to be released, it drives the valve body to move upward. Furthermore, under the action of the two connecting rods, the two sliding plates are driven to move synchronously towards each other. Since the acting forces on the sliding plates are different when the adjusting plates are at different positions, the acting forces given to the valve body by the sliding plates and the connecting rods when the valve body moves upward can be adjusted, realizing the adjustment function. The adjustment operation is simple, the pressure regulation effect is good, and the practicability is strong.

[0014] 2. In the present utility model, when the bidirectional lead screw is rotated, the two square sliders are driven to move synchronously towards each other or away from each other through the thread action. Furthermore, the two adjusting plates are driven to realize the synchronous movement function through the connection action of the two connecting plates. The operation is relatively convenient. After the rotation of the bidirectional lead screw is completed, by rotating the fixing bolt of the rotating rod, one end of it is then abutted against the bidirectional lead screw, thereby realizing the limiting function of the bidirectional lead screw and preventing it from rotating randomly. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a pressure-adjustable pressure relief valve and a pot lid in an embodiment of the present application;

[0017] Figure 2 It is a partial sectional structural schematic diagram of the valve body, the pot lid body, and the valve stem in an embodiment of the present application;

[0018] Figure 3 It is a partially enlarged structural schematic diagram of the slide plate and the adjusting plate in an embodiment of the present application;

[0019] Figure 4 It is a partial sectional structural schematic diagram of the pot lid body in an embodiment of the present application;

[0020] Figure 5 It is Figure 4 an enlarged structural schematic diagram at position A in

[0021] In the figure: 1. Valve body; 2. Pot lid body; 3. Valve stem; 4. Connecting rod; 5. Slide plate; 6. Fixed frame; 7. Adjusting plate; 8. Telescopic rod; 9. Adjusting spring; 10. Square slider; 11. Bidirectional lead screw; 12. First bevel gear; 13. Second bevel gear; 14. Knob; 15. Fixed bolt; 16. Connecting plate. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Embodiment 1

[0024] Refer to Figures 1-5A pressure-adjustable pressure relief valve shown in the figure includes a valve body 1 and a valve stem 3. The valve stem 3 is sealingly arranged in the pressure relief hole, and the valve body 1 is adapted to the valve stem 3. It should be noted that in this embodiment, the installation methods of the valve body 1 and the valve stem 3 can refer to the technical content disclosed in a pressure-adjustable pressure relief valve of a pressure cooker disclosed in a Chinese patent with the publication number CN209977358U in the prior art, which will not be elaborated here. Two connecting rods 4 are rotatably installed on the outer side wall of the periphery of the valve body 1. Sliding plates 5 are slidably installed in two sliding grooves respectively. The other ends of the two connecting rods 4 are respectively rotatably installed on the tops of the two sliding plates 5. Fixed frames 6 are fixedly installed in the two sliding grooves respectively. The two fixed frames 6 are respectively adapted to the two sliding plates 5. Adjusting plates 7 are slidably installed in the two sliding grooves through adjusting mechanisms respectively. Expansion rods 8 are arranged on the side parts of the two adjusting plates 7. The other ends of the two expansion rods 8 are respectively fixedly installed on the side parts of the two sliding plates 5. Adjusting springs 9 are sleeved on the two expansion rods 8 respectively. One ends of the two adjusting springs 9 are respectively fixedly installed on the side parts of the two adjusting plates 7, and the other ends of the two adjusting springs 9 are respectively fixedly installed on the side parts of the two sliding plates 5.

[0025] With the above structure, when in use, when it is necessary to adjust the pressure, the two adjusting plates 7 are driven to move away from each other through the adjusting mechanism. When the two sliding plates 5 move away from each other, the two adjusting springs 9 are respectively stretched. Thus, a pulling force is exerted on the two sliding plates 5 through the elastic action of the adjusting springs 9. When the pressure in the pressure cooker is relatively high and pressure needs to be relieved, it drives the valve body 1 to move upward. Furthermore, under the action of the two connecting rods 4, the two sliding plates 5 are driven to move synchronously towards each other. Since the pulling forces on the sliding plates 5 are different when the adjusting plates 7 are in different positions, the pulling forces given to the valve body 1 by the sliding plates 5 and the connecting rods 4 when the valve body 1 moves upward can be adjusted, realizing the adjustment function. The adjustment operation is simple, the pressure regulation effect is good, and the practicability is strong.

[0026] Embodiment 2

[0027] As Figure 5 shown, the adjusting mechanism includes two square sliders 10. The two square sliders 10 are slidably installed in the adjusting cavity through a sliding component. Connecting plates 16 are fixedly installed on the opposite side parts of the two square sliders 10 and the two adjusting plates 7. The advantage of such a setting is that through the setting of the two square sliders 10 and the two connecting plates 16, the function of driving the two adjusting plates 7 to move can be realized.

[0028] Specifically, when it is necessary to move the two adjusting plates 7, the two square sliders 10 are driven to move synchronously towards each other or away from each other through the sliding component, and the two adjusting plates 7 can be driven to realize the synchronous movement function through the connection of the two connecting plates 16.

[0029] As Figure 5As shown in the figure, the sliding assembly includes a bidirectional lead screw 11. Both ends of the two bidirectional lead screws 11 are rotatably installed on the opposite inner walls of the adjustment cavity. Both square sliders 10 are threadedly installed on the bidirectional lead screw 11. A rotation unit is provided on the bidirectional lead screw 11, and a limiting unit adapted to the bidirectional lead screw 11 is provided in the round hole. The advantage of this setting is that through the setting of the bidirectional lead screw 11, the function of driving the two square sliders 10 to move synchronously towards or away from each other can be realized.

[0030] Specifically, when the bidirectional lead screw 11 is rotated, the two square sliders 10 are driven to move synchronously towards or away from each other through the thread action, and the stability is relatively strong.

[0031] As Figure 5 shown in the figure, the rotation unit includes an operating rod. The operating rod is rotatably installed in the operating hole. The bottom end of the operating rod extends into the adjustment cavity and is fixedly sleeved with a first bevel gear 12. A second bevel gear 13 is fixedly sleeved on the bidirectional lead screw 11. The first bevel gear 12 and the second bevel gear 13 are meshed and installed. The advantage of this setting is that through the setting of the operating rod, the first bevel gear 12, and the second bevel gear 13, the function of driving the bidirectional lead screw 11 to rotate synchronously by rotating the operating rod can be realized.

[0032] Specifically, when the operating rod is rotated, the first bevel gear 12 is driven to rotate, and then the bidirectional lead screw 11 is driven to realize the synchronous rotation function under the meshing action of the first bevel gear 12 and the second bevel gear 13.

[0033] As Figure 5 shown in the figure, the top end of the operating rod extends outside the pot lid body 2 and is fixedly installed with a knob 14. The advantage of this setting is that through the setting of the knob 14, the function of conveniently operating the operating rod can be realized.

[0034] Specifically, when the operating rod needs to be rotated, the quick rotation function can be realized by rotating the knob 14, which is convenient for actual operation.

[0035] As Figure 5 shown in the figure, the limiting unit includes a fixing bolt 15. The fixing bolt 15 is threadedly installed in the round hole. The fixing bolt 15 is adapted to the bidirectional lead screw 11. The advantage of this setting is that through the setting of the fixing bolt 15, the bidirectional lead screw 11 can be limited after it is rotated.

[0036] Specifically, after the rotation of the bidirectional lead screw 11 is completed, by rotating the fixing bolt 15, one end of it is then abutted against the bidirectional lead screw 11, thereby realizing the limiting function of the bidirectional lead screw 11 and preventing it from rotating randomly.

[0037] Embodiment 3

[0038] A pot lid, comprising a pot lid body 2, further comprising the above-mentioned pressure-adjustable pressure relief valve. A pressure relief hole is provided on the inner wall of the top of the pot lid body 2. A handle is provided on the pot lid body 2. Two sliding grooves are provided on the top of the pot lid body 2. An adjustment cavity is provided inside the pot lid body 2. The adjustment cavity is communicated with the two sliding grooves through connection holes. A round hole and an operation hole are provided on the inner wall of the top of the adjustment cavity.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure-adjustable pressure relief valve, comprising a valve body (1) and a valve stem (3), characterized in that: The valve stem (3) is sealingly arranged in the pressure relief hole. The valve body (1) is adapted to the valve stem (3). Two connecting rods (4) are rotatably installed on the outer wall of the circumferential side of the valve body (1). Sliding plates (5) are slidably installed in both of the two sliding grooves. The other ends of the two connecting rods (4) are respectively rotatably installed on the tops of the two sliding plates (5). Fixed frames (6) are fixedly installed in both of the two sliding grooves. The two fixed frames (6) are respectively adapted to the two sliding plates (5). Adjusting plates (7) are slidably installed in both of the two sliding grooves through adjusting mechanisms. Expansion rods (8) are arranged on the sides of the two adjusting plates (7). The other ends of the two expansion rods (8) are respectively fixedly installed on the sides of the two sliding plates (5). Adjusting springs (9) are sleeved on both of the two expansion rods (8). One ends of the two adjusting springs (9) are respectively fixedly installed on the sides of the two adjusting plates (7), and the other ends of the two adjusting springs (9) are respectively fixedly installed on the sides of the two sliding plates (5).

2. The pressure-adjustable pressure relief valve according to claim 1, wherein: The adjusting mechanism includes two square sliders (10). The two square sliders (10) are slidably installed in the adjusting cavity through sliding components. Connecting plates (16) are fixedly installed on the opposite sides of the two square sliders (10) and the two adjusting plates (7).

3. The pressure-adjustable pressure relief valve according to claim 2, wherein: The sliding component includes a bidirectional lead screw (11). The two ends of the two bidirectional lead screws (11) are respectively rotatably installed on the opposite inner walls of the adjusting cavity. The two square sliders (10) are both threadedly installed on the bidirectional lead screw (11). A rotating unit is arranged on the bidirectional lead screw (11), and a limiting unit adapted to the bidirectional lead screw (11) is arranged in the round hole.

4. The pressure-adjustable pressure relief valve according to claim 3, wherein: The rotating unit includes an operating rod. The operating rod is rotatably installed in the operating hole. The bottom end of the operating rod extends into the adjusting cavity and is fixedly sleeved with a first bevel gear (12). A second bevel gear (13) is fixedly sleeved on the bidirectional lead screw (11). The first bevel gear (12) and the second bevel gear (13) are meshingly installed.

5. The pressure-adjustable pressure relief valve according to claim 4, wherein: The top end of the operating rod extends outside the pot lid body (2) and is fixedly installed with a knob (14).

6. The pressure-adjustable pressure relief valve according to claim 3, characterized in that: The limiting unit includes a fixing bolt (15). The fixing bolt (15) is threadedly installed in the round hole. The fixing bolt (15) is adapted to the bidirectional lead screw (11).

7. A pot lid, comprising a pot lid body (2), characterized in that: It also includes the pressure-adjustable pressure relief valve according to any one of claims 1-6. A pressure relief hole is opened on the inner wall of the top of the pot lid body (2). A handle is arranged on the pot lid body (2). Two sliding grooves are opened on the top of the pot lid body (2). An adjusting cavity is opened in the pot lid body (2). The adjusting cavity and the two sliding grooves are both communicated through connecting holes. A round hole and an operating hole are opened on the inner wall of the top of the adjusting cavity.

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