Adjustable diaphragm-free pressure regulating valve

Abstract

The utility model discloses an adjustable diaphragm-free type pressure regulating valve, which relates to the technical field of pressure regulating valves and comprises a valve casing, a fixed pipe is arranged in the valve casing in a threaded manner, an oil outlet pipe is arranged on one side of the fixed pipe, two cylinders are symmetrically arranged in the fixed pipe, a rotating rod is rotatably arranged in each cylinder, and a gear and a lead screw are respectively arranged at two ends of each rotating rod. A sliding block is arranged on the surface of the lead screw through a lead screw nut in a threaded mode, two push rods are symmetrically arranged on one side of the sliding block, a round pipe is rotationally arranged on the surface of the oil outlet pipe, a gear ring used for being in meshed connection with a gear is arranged on the surface of the round pipe, a gasket is arranged in the valve shell through a compressed spring, the gasket is fixedly connected with the ends of the push rods, and a plugging assembly is arranged in the valve shell. The valve seat has the advantages that the corresponding push rods can move the gasket synchronously, so that the acting force of the pressure spring on the valve seat can be adjusted conveniently, a worker can operate the valve seat conveniently, the complexity in the operation and use process is reduced, and the use convenience is good.

Description

Technical Field

[0001] The utility model relates to a pressure regulating valve, in particular to an adjustable diaphragm-free pressure regulating valve, belonging to the technical field of pressure regulating valves. Background Art

[0002] The pressure regulating valve of the prior art includes a valve cover, a valve body, a valve seat, a valve core assembly, a diaphragm, a diaphragm spring and a spring seat. The valve cover and the valve body are fixedly connected by riveting at the diaphragm, the valve core assembly is fixedly connected to the diaphragm and the spring seat, the diaphragm spring is arranged in the valve cover, one end of the diaphragm spring acts on the diaphragm through the spring seat, and the other end contacts the bottom surface of the valve cover, the sealing surface of the valve core assembly is in pressure contact with the sealing end of the valve seat under the action of the diaphragm spring, the valve seat is arranged on the valve seat bracket, the valve seat bracket is inserted into the valve body and is sealed and fixedly connected to the valve body, an oil outlet nozzle for fuel outflow is provided on the valve seat bracket, and an oil nozzle joint and an oil inlet nozzle for fuel inflow are provided on the valve body.

[0003] Among them, the "adjustable diaphragmless pressure regulating valve" disclosed in the application number "CN202021844471.8" "comprises a valve housing, the left side of the valve housing is threadedly connected to an oil outlet pipe, a valve seat is arranged inside the valve housing, the outer wall of the valve seat is gap-matched with the inner wall of the valve housing, a plurality of through holes are opened around the left surface of the valve seat, a compression spring is fixedly connected around the left surface of the valve seat, a gasket is fixedly connected to the other end of the compression spring, an adjustment mechanism is arranged on the upper and lower sides of the left surface of the gasket, a screw rod is threadedly connected to the center of the right surface of the valve seat, a circular plate is fixedly connected to the right end of the screw rod, and the circular plate A plug is fixedly connected to the right surface of the plate, and the outer wall of the plug is tightly pressed against the contact surface of the valve shell. In the utility model, when the pressure of the compression spring needs to be adjusted, the operator applies force to the knob to rotate the cross cylinder. During this period, the limit of the slide groove on the slider can make the screw rod rotate together, and the threaded connection relationship between the screw rod and the cylinder can make the screw rod apply force to the gasket to move left and right, thereby realizing the adjustment of the force of the compression spring on the valve seat. During this period, there is no need to separate the oil outlet pipe from the external connecting pipe, and it is impossible to reciprocate and disassemble and install for many times during the pressure adjustment process. The operation is relatively simple and convenient, and the practical performance is enhanced.

[0004] However, the above method still has the following defects: by rotating the two knobs, the screw rod applies force to the gasket to move left and right, thereby adjusting the force of the compression spring on the valve seat. However, during actual operation, it is inconvenient for the staff to ensure the synchronous rotation of the knobs at the same time, which increases the complexity of the operation process and is not convenient to use. Summary of the invention

[0005] The purpose of the utility model is to provide an adjustable diaphragmless pressure regulating valve to solve the problem raised in the above background technology that it is inconvenient for workers to ensure synchronous rotation of the knobs during actual operation, which increases the complexity of the operation process and is not convenient to use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable diaphragmless pressure regulating valve, comprising a valve housing, an internal thread of the valve housing is provided with a fixed tube, one side of the fixed tube is provided with an oil outlet pipe, two cylinders are symmetrically provided inside the fixed tube, a rotating rod is rotatably provided inside the cylinder, gears and screws are respectively provided at both ends of the rotating rod, a slider is provided on the surface of the screw through a screw nut thread, two push rods are symmetrically provided on one side of the slider, a circular tube is rotatably provided on the surface of the oil outlet pipe, a gear ring is provided on the surface of the circular tube for meshing connection with the gear, a gasket is provided inside the valve housing through a compression spring, and the gasket is fixedly connected to the end of the push rod, a sealing assembly is provided inside the valve housing, and an auxiliary sealing assembly is provided on the top of the valve housing.

[0007] As a preferred technical solution of the utility model, a flange plate 1 is provided at one end of the valve housing, a flange plate 2 is provided at one end of the oil outlet pipe, a mechanical seal is provided at the connection between the rotating rod and the cylinder, and the two screw rods have opposite thread rotation directions.

[0008] As a preferred technical solution of the utility model, an adjusting hand wheel is provided on the surface of the circular tube, and an anti-slip sleeve is provided on the surface of the adjusting hand wheel.

[0009] As a preferred technical solution of the utility model, a sliding groove matching the sliding block is provided on the inner wall of the cylinder, and the sliding block is slidably connected to the sliding groove.

[0010] As a preferred technical solution of the utility model, the sealing assembly includes a valve seat, which is slidably arranged inside the valve housing, and one side of the valve seat is fixedly connected to one end of a compression spring, the internal thread of the valve seat is provided with a plug, and two oil outlet holes are symmetrically opened on the surface of the valve seat.

[0011] As a preferred technical solution of the utility model, two blocking plates are symmetrically arranged inside the valve housing, one of the blocking plates is provided with a blocking hole corresponding to the plug, and the other blocking plate is provided with an oil inlet hole.

[0012] As a preferred technical solution of the utility model, the auxiliary sealing assembly includes a screw, which is threadedly connected to the top of the valve housing, and a sealing column is provided at the bottom of the screw, and arc grooves corresponding to the edges of the sealing columns are provided inside the two sealing plates.

[0013] As a preferred technical solution of the utility model, a knob cap is provided on the top of the screw rod, and a plurality of anti-slip protrusions are provided on the surface of the knob cap.

[0014] Compared with the related art, the adjustable diaphragm-free pressure regulating valve provided by the utility model has the following beneficial effects:

[0015] By rotating the gear ring and cooperating with the two gears meshing with the gear ring, the two gears can rotate synchronously, so that the rotating rod and the lead screw inside the cylinder can rotate synchronously. In conjunction with the lead screw nut, the slider on the surface of the lead screw can move in the horizontal direction, so that the corresponding push rod can synchronously move the gasket, thereby facilitating the adjustment of the force of the compression spring on the valve seat, making it convenient for staff to operate, reducing the complexity of operation and use, and being easy to use.

[0016] Through the auxiliary sealing assembly provided inside the valve housing, when the plug needs to be removed or replaced, the knob cap is only needed to be used to drive the screw to rotate, so that the arc groove between the two sealing plates matched with the sealing column is sealed, and the fixing pipe with threaded connection is used to remove it, thereby facilitating the removal or replacement of the threaded plug. During operation, there is no need to discharge the fuel in the oil pipe on the right side of the valve housing, thus avoiding waste of oil and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the valve housing of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the cylinder of the utility model;

[0020] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0021] Figure 5 This is a schematic diagram of the explosion structure of the valve seat of the utility model;

[0022] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure at B.

[0023] In the figure: 1. valve housing; 2. fixing pipe; 3. oil outlet pipe; 4. cylinder; 5. gasket; 6. compression spring; 7. rotating rod; 8. gear; 9. auxiliary sealing assembly; 901. screw; 902. sealing column; 903. knob cap; 904. sealing plate; 905. arc groove; 906. oil inlet hole; 10. round tube; 11. gear ring; 12. sealing assembly; 1201. valve seat; 1202. plug; 1203. oil outlet hole; 13. plugging hole; 14. screw; 15. slider; 16. push rod; 17. adjusting hand wheel; 18. slide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] See also Figure 1-6 The utility model provides an adjustable diaphragm-free pressure regulating valve, including a valve housing 1, a fixed tube 2 is provided on the inner thread of the valve housing 1, an oil outlet pipe 3 is provided on one side of the fixed tube 2, two cylinders 4 are symmetrically provided inside the fixed tube 2, a rotating rod 7 is rotatably provided inside the cylinder 4, a gear 8 and a screw 14 are provided at both ends of the rotating rod 7, a slider 15 is provided on the surface of the screw 14 through a screw nut thread, two push rods 16 are symmetrically provided on one side of the slider 15, a circular tube 10 is rotatably provided on the surface of the oil outlet pipe 3, a gear ring 11 is provided on the surface of the circular tube 10 for meshing connection with the gear 8, and the two gears 8 meshing connection with the gear ring 11 are rotated by the provided gear ring 11, so that the two gears 8 rotate synchronously, so that the rotating rod 7 and the screw 14 inside the cylinder 4 rotate synchronously, so that the screw 1 The slider 15 on the surface of the valve body 4 moves in the horizontal direction, so that the corresponding push rod 16 can move the gasket 5 synchronously, so as to adjust the compression spring 6, which is convenient for the staff to operate, reduces the complexity of the operation process, and is easy to use. The gasket 5 is arranged inside the valve housing 1 through the compression spring 6, and the gasket 5 is fixedly connected to the end of the push rod 16, so that the gasket 5 can be driven to move by the set push rod 16, so that the compression spring 6 can be compressed and adjusted. The valve housing 1 is provided with a plugging component 12 inside, which is convenient for cooperating with the valve seat 1201 and the plug 1202 to control the oil output. The top of the valve housing 1 is provided with an auxiliary sealing component 9, which is convenient for sealing and convenient for disassembly and replacement of the plug 1202 inside it. There is no need to discharge the fuel at the right end of the valve housing 1, which helps to save fuel.

[0027] The auxiliary sealing assembly 9 includes a screw 901, which is threadedly connected to the top of the valve housing 1, and a sealing column 902 is provided at the bottom of the screw 901. The insides of the two blocking plates 904 are provided with arc grooves 905 corresponding to the edges of the sealing columns 902, so that the rotating screw 901 can drive the sealing columns 902 to move in the vertical direction, and the arc grooves 905 are provided to achieve sealing between the two blocking plates 904, so that there is no need to discharge the fuel at the right end of the valve housing 1, which helps to save fuel and facilitates the removal or replacement of the threaded plug 1202;

[0028] Two blocking plates 904 are symmetrically arranged inside the valve housing 1, one of the blocking plates 904 is provided with a blocking hole 13 corresponding to the plug 1202, and the other blocking plate 904 is provided with an oil inlet hole 906, so that the plug 1202 can be used to block the oil through the blocking hole 13, so that the fuel can enter the interior of the fixed valve housing 1 through the oil inlet hole 906 to perform the oil delivery operation;

[0029] A knob cap 903 is provided on the top of the screw rod 901, and a plurality of anti-skid bumps are provided on the surface of the knob cap 903, so that the screw rod 901 can be rotated by the knob cap 903, and the sealing column 902 can be moved in the vertical direction to play an anti-skid role.

[0030] Example

[0031] The plugging assembly 12 includes a valve seat 1201, which is slidably arranged inside the valve housing 1, and one side of the valve seat 1201 is fixedly connected to one end of the compression spring 6, and the internal thread of the valve seat 1201 is provided with a plug 1202, and the surface of the valve seat 1201 is symmetrically provided with two oil outlet holes 1203. Through the provided valve seat 1201 and the plug 1202 arranged inside it, it is convenient to apply pressure to the plug 1202 during the oil delivery process, so that the plug 1202 moves, thereby facilitating the control of the oil output;

[0032] A flange plate 1 is provided at one end of the valve housing 1, and a flange plate 2 is provided at one end of the oil outlet pipe 3. The flange plates 1 and 2 are provided so as to facilitate connection and fixation with other pipelines, and the use is convenient. A mechanical seal is provided at the connection between the rotating rod 7 and the cylinder 4, so as to facilitate sealing. The threads of the two screw rods 14 are rotated in opposite directions, so that the two sliders 15 move synchronously on the surface of the screw rod 14, and the use is convenient.

[0033] An adjusting hand wheel 17 is provided on the surface of the round tube 10, and an anti-slip sleeve is provided on the surface of the adjusting hand wheel 17, so that a staff member can use the adjusting hand wheel 17 to drive the gear ring 11 provided on the surface thereof to rotate forward and reverse directions;

[0034] The inner wall of the cylinder 4 is provided with a slide groove 18 matching the slider 15, and the slider 15 is slidably connected to the slide groove 18, so as to limit and guide the movement of the slider 15, so that the slider 15 is not restricted in any way during the sliding process.

[0035] When in use, first, place the pressure regulating valve at a suitable working location, then use the oil supply pipeline to match the flange 1 at the valve housing 1 and the flange 2 at the oil outlet pipe 3 to connect and install. When the pressure of the compression spring 6 needs to be adjusted during use, the adjusting hand wheel 17 is used to drive the set round tube 10 to rotate in the forward and reverse directions, so that the gear ring 11 at the round tube 10 can be rotated and adjusted, and the two meshing gears 8 are matched to drive the two gears 8 to rotate synchronously, so that the rotating rod 7 and the screw rod 14 rotate synchronously, and the screw nut and the slide groove 18 are matched to make the two sliders 15 move synchronously in the horizontal direction, and then the push rod 16 pushes the gasket 5 to apply a force to the compression spring 6, and the plug 1202 inside the valve seat 1201 is matched to facilitate the adjustment of the force of the compression spring 6 on the valve seat 1201, which is convenient for the staff to operate and facilitate pressure adjustment;

[0036] When it is necessary to replace the plug 1202 that has been in use for a long time, the knob cap 903 is used to drive the screw 901 to rotate forward, so that the sealing column 902 moves downward, and cooperates with the arc groove 905 set at the sealing plate 904, so that the sealing column 902 is used to assist in sealing the interior of the valve housing 1. Then, the pipeline at the end of the oil outlet pipe 3 is disassembled, the fixed pipe 2 connected by the thread is disassembled and removed, the valve seat 1201 slidably connected to the inside of the valve housing 1 is pulled out, and the plug 1202 with the internal thread is disassembled or replaced.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable diaphragmless pressure regulating valve, comprising a valve housing (1), characterized in that: The valve housing (1) is provided with a fixed tube (2) through internal threads, an oil outlet pipe (3) is provided on one side of the fixed tube (2), two cylinders (4) are symmetrically provided inside the fixed tube (2), a rotating rod (7) is rotatably provided inside the cylinder (4), a gear (8) and a screw rod (14) are provided at both ends of the rotating rod (7), a slider (15) is provided on the surface of the screw rod (14) through a screw nut thread, two push rods (16) are symmetrically provided on one side of the slider (15), a circular tube (10) is rotatably provided on the surface of the oil outlet pipe (3), a gear ring (11) is provided on the surface of the circular tube (10) for meshing connection with the gear (8), a gasket (5) is provided inside the valve housing (1) through a compression spring (6), and the gasket (5) is fixedly connected to the end of the push rod (16), a blocking assembly (12) is provided inside the valve housing (1), and an auxiliary sealing assembly (9) is provided on the top of the valve housing (1).

2. The adjustable diaphragmless pressure regulating valve according to claim 1, characterized in that: A flange plate 1 is provided at one end of the valve housing (1), a flange plate 2 is provided at one end of the oil outlet pipe (3), a mechanical seal is provided at the connection between the rotating rod (7) and the cylinder (4), and the threads of the two screw rods (14) are in opposite directions.

3. The adjustable diaphragmless pressure regulating valve according to claim 1, characterized in that: An adjusting hand wheel (17) is provided on the surface of the circular tube (10), and an anti-slip sleeve is provided on the surface of the adjusting hand wheel (17).

4. The adjustable diaphragmless pressure regulating valve according to claim 1, characterized in that: The inner wall of the cylinder (4) is provided with a slide groove (18) matching the slide block (15), and the slide block (15) is slidably connected to the slide groove (18).

5. The adjustable diaphragmless pressure regulating valve according to claim 1, characterized in that: The blocking component (12) comprises a valve seat (1201), the valve seat (1201) being slidably arranged inside the valve housing (1), and one side of the valve seat (1201) being fixedly connected to one end of a compression spring (6), the internal thread of the valve seat (1201) being provided with a plug (1202), and the surface of the valve seat (1201) being symmetrically provided with two oil outlet holes (1203).

6. The adjustable diaphragmless pressure regulating valve according to claim 5, characterized in that: Two blocking plates (904) are symmetrically arranged inside the valve housing (1), wherein one of the blocking plates (904) has a blocking hole (13) corresponding to the plug (1202) opened inside, and the other blocking plate (904) has an oil inlet hole (906) opened inside.

7. The adjustable diaphragmless pressure regulating valve according to claim 6, characterized in that: The auxiliary sealing assembly (9) comprises a screw (901) which is threadedly connected to the top of the valve housing (1), and a sealing column (902) is provided at the bottom of the screw (901), and arc grooves (905) corresponding to the edges of the sealing columns (902) are provided inside the two sealing plates (904).

8. The adjustable diaphragmless pressure regulating valve according to claim 7, characterized in that: A knob cap (903) is provided on the top of the screw rod (901), and a plurality of anti-slip protrusions are provided on the surface of the knob cap (903).

Images