Pressure relief valve

Abstract

The utility model discloses a pressure relief valve which comprises a valve seat, connecting assemblies are arranged on the two sides of the valve seat, a valve element is movably connected into the valve seat, a valve shaft is fixedly connected to the valve element, an adjusting bin is detachably connected to the valve seat, the valve shaft is movably connected into the adjusting bin, an adjusting plate is movably connected into the adjusting bin, and the adjusting plate is detachably connected with the valve element. The adjusting plate is movably connected with the valve shaft, an adjusting assembly is arranged in the adjusting bin and used for changing the position of the adjusting plate, and a signal rod is movably connected into the adjusting bin. The pressure relief valve has the advantages that the pressure set value of the spring is changed by arranging the adjusting assembly, so that the opening pressure value of the valve is changed, and the pressure relief valve is suitable for different pressure value requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure release valve technical field especially relates to a pressure release valve. BACKGROUND

[0002] Pressure release valve is a kind of valve specially designed to release pressure, widely used in various systems or equipment that need to be protected from excessive pressure, its main function is to release pressure in time when the internal pressure of system exceeds the set value, ensure the safe operation of equipment, a kind of pressure release valve is disclosed in publication No. CN211550655U. Including valve seat, valve cover, spring and die disc;Valve cover is installed on valve seat;Valve cover top is installed with valve cover;Valve seat top opening is installed with die disc;Spring is installed between die disc and valve cover;Valve cover center is provided with through-hole, indicating rod passes through the through-hole, indicating rod is attached to the hole wall, the bottom of indicating rod is abutted on die disc;Spring is sleeved on indicating rod;Indicating rod moves upwards with die disc, triggers fixed on valve cover travel switch;The sidewall of valve cover is provided with oil guide neck. The shape structure of valve cover is changed, the processing difficulty is reduced, the productivity is improved, the inner hexagonal top screw is used for installation, after the installation of valve seat, it can rotate 360 degrees to select the direction of valve cover;It is convenient for on-site workers to install;The external travel switch enhances the use performance of switch, and is damp-proof, corrosion-resistant and the like, thereby improving the protection level of valve, and being more suitable for use in more severe environment areas.

[0003] However, the prior art has some problems: the existing pressure release valve is usually provided with a spring to detect pressure and then release, but the set pressure of the existing pressure release valve spring is fixed, cannot be adjusted according to actual demand, different pressure release valves need to be used for different pressure value requirements, at the same time, the existing pressure release valve cannot determine whether overpressure release is performed, and cannot judge how much the pressure exceeds the set value, and workers cannot determine whether the device needs to be adjusted, therefore, we propose a pressure release valve. Utility model content

[0004] In view of the problems existing in the prior art, the utility model aims at providing a pressure release valve, which changes the opening pressure value of the valve by setting the adjusting assembly to change the pressure set value of the spring, so that the pressure release valve is suitable for different pressure value requirements.

[0005] The utility model is implemented in the following way, a kind of pressure release valve, including valve seat, the both sides of valve seat are provided with connecting assembly, the valve core is movably connected in valve seat, the valve core is fixedly connected with valve shaft, the valve seat is detachably connected with adjusting bin, the valve shaft is movably connected in adjusting bin, the adjusting bin is movably connected with adjusting plate, the adjusting plate is movably connected with valve shaft, the adjusting bin is provided with adjusting assembly, the adjusting assembly is used to change the position of adjusting plate, the adjusting bin is movably connected with signal rod.

[0006] Optionally, the connecting assembly comprises a connecting disc fixedly connected to the valve seat, a mounting hole is formed in the connecting disc, a connecting screw is arranged in the mounting hole, and a nut is threadedly connected to the connecting screw.

[0007] Optionally, a sliding channel is formed in the adjusting bin, the adjusting plate is slidingly connected in the sliding channel, a connecting plate is fixedly connected to the valve shaft, the connecting plate is slidingly connected in the sliding channel, a first spring is fixedly connected to the connecting plate, and the first spring is fixedly connected to the adjusting plate.

[0008] Optionally, the adjusting assembly comprises an adjusting shaft, a threaded hole is formed in the upper end of the adjusting bin, the adjusting shaft is threadedly connected in the threaded hole, one end of the adjusting shaft is fixedly connected to a knob, a rotating groove is formed in the adjusting plate, and the adjusting shaft is rotatably connected in the rotating groove.

[0009] Optionally, the knob is fixedly connected to a connecting block, an avoiding hole is formed in the connecting block, the signal rod is arranged through the avoiding hole, and a fixing assembly is arranged in the connecting block and used for fixing the signal rod.

[0010] Optionally, the fixing assembly comprises a fixing rod, a groove is formed in the inner wall of the avoiding hole of the connecting block, the fixing rod is slidingly connected in the groove, a clamping groove is formed in the fixing rod, and the fixing rod is clamped in the clamping groove.

[0011] Optionally, the fixing assembly further comprises a second spring, one end of the second spring is fixedly connected to the inner wall of the groove, and the other end of the second spring is fixedly connected to the fixing rod.

[0012] Optionally, a fixing bolt is further arranged, a connecting hole is formed in the valve seat, a fixing hole is formed in the adjusting bin, the fixing bolt is arranged through the connecting hole and the fixing hole, and a rubber pad is arranged between the valve seat and the adjusting bin.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a adjusting assembly is set up, through rotating knob drive adjusting shaft rotation, adjusting shaft rotates and will move due to with adjusting bin threaded connection, thereby make the position change of adjusting shaft, also make the position change of adjusting plate, further make the distance change between adjusting plate and connecting plate, and the first spring fixedly connected between adjusting plate and connecting plate will compress, thereby increase the elasticity of first spring, also changed the pressure value of first spring setting, thereby make pressure relief valve can adjust according to actual demand, ensure that the pressure in the pipeline is normal.

[0015] 2、The utility model discloses a signal pole is set, when the excessive pressure in pipeline pushes the valve core compression first spring and moves, the valve shaft moves along with, the valve shaft will push the signal pole and move after moving, the fixed rod will be compressed the second spring and move to the recess in the pressure of signal pole this moment, when the pressure in pipeline releases, the valve core and the valve shaft are fallen back by the resilience of first spring, and the signal pole will be due to the resilience of second spring and give the fixed rod thrust, and make the fixed rod fix the signal pole, and then make the staff can observe whether the pressure relief valve works, and judge the maximum pressure in pipeline through the signal pole ascending height, thereby risk assessment is carried out to the device, ensures the safe operation of device.

[0016] 3、The utility model discloses a connecting hole is seted up on the valve seat, the fixed hole is seted up on the adjusting bin, the fixed bolt is seted up through the connecting hole and the fixed hole, the rubber pad is seted up between the valve seat and the adjusting bin, and the adjusting bin and the valve seat are installed and fixed through the fixed bolt, and the adjusting bin is convenient to disassemble, thereby convenient to the detection maintenance of pressure relief valve.

[0017] Other features of the utility model and its advantages will become clear from the following detailed description of exemplary embodiments of the utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram provided by the utility model;

[0019] Figure 2 It is the structural schematic diagram provided by the utility model Figure 1 A place amplification schematic diagram of the utility model;

[0020] Figure 3 It is the valve seat sectional view provided by the utility model;

[0021] Figure 4 It is the adjusting shaft sectional view provided by the utility model;

[0022] Figure 5 It is the connecting disc schematic diagram provided by the utility model.

[0023] In the drawing: 1, valve seat;2, connecting assembly;201, connecting disc;202, connecting screw;203, nut;3, valve core;4, valve shaft;5, adjusting bin;6, adjusting plate;7, adjusting assembly;701, adjusting shaft;702, knob;8, signal pole;9, fixed bolt;10, connecting plate;11, first spring;12, connecting block;13, fixed assembly;131, fixed rod;132, second spring;14, rubber pad. DETAILED DESCRIPTION

[0024] In order to further understand the utility model content, characteristics and efficacy of the utility model, the following examples are cited, and the detailed description is as follows in cooperation with the drawings.

[0025] As Figures 1 to 5 shown, the utility model discloses a pressure relief valve, including valve seat 1, valve seat 1 adopts stainless steel material, the main function of valve seat 1 is to ensure the sealing property of pressure relief valve.

[0026] Further, both sides of valve seat 1 are provided with connecting assembly 2, connecting assembly 2 includes connecting disc 201, connecting disc 201 is fixedly connected on valve seat 1, and mounting hole is formed in connecting disc 201, and connecting screw 202 is arranged in the mounting hole, and nut 203 is threadedly connected on connecting screw 202.

[0027] Specifically, by taking off nut 203, then by corresponding connecting screw 202 is arranged in the mounting, and then nut 203 is tightened, the installation and fixing of pressure relief valve can be completed.

[0028] Further, valve core 3 is movably connected in valve seat 1, valve core 3 is combined and is constituted with stainless steel material and rubber material, and the rubber material is mainly arranged at the bottom end, is used to guarantee the airtightness of device, and valve is arranged in valve seat 1, and valve core 3 is arranged in the valve and is used to block the valve.

[0029] Further, valve shaft 4 is fixedly connected on valve core 3, and valve shaft 4 is also made of stainless steel material, and its main function is to transmit pressure signal, and adjustable bin 5 is detachably connected on valve seat 1.

[0030] Further, it further includes fixing bolt 9, connecting hole is formed in valve seat 1, and fixing hole is formed in adjustable bin 5, and fixing bolt 9 is arranged through the connecting hole and the fixing hole, and rubber pad 14 is arranged between valve seat 1 and adjustable bin 5, adjustable bin 5 and valve seat 1 are installed and fixed by fixing bolt 9, the adjustable bin 5 is convenient to disassemble, so that the pressure relief valve is detected and maintained.

[0031] Further, valve shaft 4 is movably connected in adjustable bin 5, adjustable plate 6 is movably connected in adjustable bin 5, and slide is formed in adjustable bin 5, and adjustable plate 6 is slidably connected in the slide, and connecting plate 10 is fixedly connected on valve shaft 4, and connecting plate 10 is slidably connected in the slide, and first spring 11 is fixedly connected on connecting plate 10, and first spring 11 is fixedly connected on adjustable plate 6.

[0032] Specifically, after the pressure relief valve is installed on the pipeline, the valve core 3 is subjected to the pressure in the pipeline, when the pressure subjected by the valve core 3 is greater than the pressure value set by the first spring 11, the valve core 3 pushes the valve shaft 4 and the connecting plate 10 to compress the first spring 11 and moves, so as to open the valve and release the pressure in the pipeline, thereby avoiding damage of the device caused by excessive pressure, after the pressure release is completed, the valve core 3 re-seals the valve due to the rebound force of the first spring 11, thereby avoiding the medium in the pipeline from flowing out of the pressure relief valve.

[0033] Further, the adjusting plate 6 is movably connected with the valve shaft 4, and the adjusting assembly 7 is arranged in the adjusting bin 5, and the adjusting assembly 7 is used for changing the position of the adjusting plate 6.

[0034] Further, the adjusting assembly 7 comprises an adjusting shaft 701, a threaded hole is formed in the upper end of the adjusting bin 5, the adjusting shaft 701 is threadedly connected in the threaded hole, one end of the adjusting shaft 701 is fixedly connected with a knob 702, a rotating groove is formed in the adjusting plate 6, and the adjusting shaft 701 is rotatably connected in the rotating groove.

[0035] Specifically, the adjusting shaft 701 is driven to rotate by rotating the knob 702, after the adjusting shaft 701 rotates, the adjusting shaft 701 moves due to the threaded connection with the adjusting bin 5, so that the position of the adjusting shaft 701 changes, the position of the adjusting plate 6 changes, and the distance between the adjusting plate 6 and the connecting plate 10 changes, and the first spring 11 fixedly connected between the adjusting plate 6 and the connecting plate 10 is compressed, so that the elastic force of the first spring 11 is increased, and the pressure value set by the first spring 11 is changed, so that the pressure relief valve can be adjusted according to actual needs, and the pressure in the pipeline is ensured to be normal.

[0036] Further, the signal rod 8 is movably connected in the adjusting bin 5, the connecting block 12 is fixedly connected on the knob 702, the avoiding hole is formed in the connecting block 12, the signal rod 8 penetrates through the avoiding hole, and the fixing assembly 13 is arranged in the connecting block 12 and used for fixing the signal rod 8.

[0037] Specifically, the fixing assembly 13 comprises a fixing rod 131, the recess is formed in the inner wall of the avoiding hole of the connecting block 12, the fixing rod 131 is slidably connected in the recess, and the clamping groove is formed in the fixing rod 131 and the fixing rod 131 is clamped in the clamping groove.

[0038] Further, the fixing assembly 13 further comprises a second spring 132, one end of the second spring 132 is fixedly connected with the inner wall of the recess, and the other end of the second spring 132 is fixedly connected with the fixing rod 131.

[0039] Specifically, when the excessive pressure in the pipeline pushes the valve core 3 to compress the first spring 11 and move, the valve shaft 4 moves with it, and after the valve shaft 4 moves, it pushes the signal rod 8 to move, at this time, the fixed rod 131 is compressed by the pressure of the signal rod 8 and moves into the groove, when the pressure in the pipeline is released, the valve core 3 and the valve shaft 4 fall back due to the rebound force of the first spring 11, and the signal rod 8 gives the fixed rod 131 a pushing force due to the rebound force of the second spring 132, so that the fixed rod 131 fixes the signal rod 8, and then the worker can observe whether the pressure release valve works, and judge the maximum pressure in the pipeline by the rising height of the signal rod 8, so as to evaluate the risk of the device and ensure the safe operation of the device.

[0040] The working principle of the utility model is as follows:

[0041] The utility model sets up adjusting assembly 7, through rotating knob 702 drive adjusting shaft 701 rotation, adjusting shaft 701 rotation will move due to with adjusting bin 5 threaded connection occurs, thereby make the position change of adjusting shaft 701, also make the position change of adjusting plate 6, further make the distance change between adjusting plate 6 and connecting plate 10, and the first spring 11 fixedly connected between adjusting plate 6 and connecting plate 10 will compress, thereby increase the spring force of first spring 11, also changed the pressure value set by first spring 11, so that the pressure release valve can be adjusted according to actual demand, ensure that the pressure in the pipeline is normal.

[0042] The utility model sets up signal rod 8, when the excessive pressure in the pipeline pushes the valve core 3 to compress the first spring 11 and move, the valve shaft 4 moves with it, and after the valve shaft 4 moves, it pushes the signal rod 8 to move, at this time, the fixed rod 131 is compressed by the pressure of the signal rod 8 and moves into the groove, when the pressure in the pipeline is released, the valve core 3 and the valve shaft 4 fall back due to the rebound force of the first spring 11, and the signal rod 8 gives the fixed rod 131 a pushing force due to the rebound force of the second spring 132, so that the fixed rod 131 fixes the signal rod 8, and then the worker can observe whether the pressure release valve works, and judge the maximum pressure in the pipeline by the rising height of the signal rod 8, so as to evaluate the risk of the device and ensure the safe operation of the device.

[0043] The utility model discloses a connecting hole is set up on valve seat 1, adjusting bin 5 is set up fixed orifice, fixed bolt 9 is set up through connecting hole and fixed orifice, and rubber pad 14 is set up between valve seat 1 and adjusting bin 5, and the adjusting bin 5 and valve seat 1 are installed and fixed through fixed bolt 9, and the adjusting bin 5 is convenient to disassemble, so as to be convenient for the detection maintenance of pressure release valve.

[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure relief valve, comprising a valve seat (1), characterized in that: Connecting components (2) are provided on both sides of the valve seat (1). A valve core (3) is movably connected inside the valve seat (1). A valve shaft (4) is fixedly connected to the valve core (3). An adjusting chamber (5) is detachably connected to the valve seat (1). The valve shaft (4) is movably connected inside the adjusting chamber (5). An adjusting plate (6) is movably connected inside the adjusting chamber (5). The adjusting plate (6) is movably connected to the valve shaft (4). An adjusting component (7) is provided inside the adjusting chamber (5). The adjusting component (7) is used to change the position of the adjusting plate (6). A signal rod (8) is movably connected inside the adjusting chamber (5).

2. A pressure relief valve according to claim 1, characterized in that: The connecting assembly (2) includes a connecting plate (201), which is fixedly connected to the valve seat (1). The connecting plate (201) has an installation hole, and a connecting screw (202) is provided in the installation hole. A nut (203) is threaded onto the connecting screw (202).

3. A pressure relief valve according to claim 1, characterized in that: The regulating chamber (5) is provided with a slide rail, the regulating plate (6) is slidably connected in the slide rail, the valve shaft (4) is fixedly connected with a connecting plate (10), the connecting plate (10) is slidably connected in the slide rail, the connecting plate (10) is fixedly connected with a first spring (11), and the first spring (11) is fixedly connected to the regulating plate (6).

4. A pressure relief valve according to claim 1, characterized in that: The adjustment assembly (7) includes an adjustment shaft (701), the upper end of the adjustment chamber (5) is provided with a threaded hole, the adjustment shaft (701) is threadedly connected in the threaded hole, one end of the adjustment shaft (701) is fixedly connected with a knob (702), the adjustment plate (6) is provided with a rotating groove, and the adjustment shaft (701) is rotatably connected in the rotating groove.

5. A pressure relief valve according to claim 4, characterized in that: A connecting block (12) is fixedly connected to the knob (702). An avoidance hole is provided on the connecting block (12). The signal rod (8) passes through the avoidance hole. A fixing component (13) is provided inside the connecting block (12). The fixing component (13) is used to fix the signal rod (8).

6. A pressure relief valve according to claim 5, characterized in that: The fixing component (13) includes a fixing rod (131), the inner wall of the connecting block (12) has a groove, the fixing rod (131) is slidably connected in the groove, the fixing rod (131) has a slot, and the fixing rod (131) is engaged in the slot.

7. A pressure relief valve according to claim 5, characterized in that: The fixing component (13) also includes a second spring (132), one end of which is fixedly connected to the inner wall of the groove, and the other end of which is fixedly connected to the fixing rod (131).

8. A pressure relief valve according to claim 1, characterized in that: It also includes a fixing bolt (9), a connecting hole is provided on the valve seat (1), a fixing hole is provided on the regulating chamber (5), the fixing bolt (9) is provided through the connecting hole and the fixing hole, and a rubber pad (14) is provided between the valve seat (1) and the regulating chamber (5).

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