Plug-in mounting type prefill valve

Abstract

The utility model belongs to the technical field of hydraulic equipment, and particularly relates to a plug-in mounting type prefill valve which comprises a first valve sleeve, a second valve sleeve is arranged in the first valve sleeve, an inner groove is formed in the second valve sleeve, a valve element is connected to the inner wall of the second valve sleeve in a sliding mode, and a reset spring is fixedly connected to the inner wall of the valve element. The end, away from the valve element, of the reset spring is fixedly connected with the inner wall of the first valve sleeve, a sealing device is arranged in the second valve sleeve and comprises a rubber ring, the rubber ring is fixedly connected with the inner groove, and an inner cavity is formed in the rubber ring. According to the plug-in mounting type prefill valve, in the process, an inclined rod can apply acting force to a pressing block, so that the pressing block moves to be separated from a moving rod, then the moving rod returns to the original position under the elastic force effect of a third spring, a rubber ring returns to the original shape, and therefore the rubber ring is not tightly attached to the outer wall of a valve element; therefore, the rubber ring is prevented from being abraded in the moving process of the valve element.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, in particular to a plug-in type liquid filling valve. Background Art

[0002] The plug-in filling valve, also known as the liquid resistance valve, is a flow control element used to control the filling process in the hydraulic system. Its main function is to control the filling speed and liquid level to ensure the smoothness and safety of the liquid lifting process.

[0003] At present, after long-term use, the sealing ring arranged inside the existing cartridge-type filling valve will be squeezed and rubbed by the valve core, causing the sealing ring to wear and possibly leak. In view of this, we propose a cartridge-type filling valve. Utility Model Content

[0004] The main purpose of the utility model is to provide a plug-in type liquid filling valve, which can solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model proposes a plug-in liquid filling valve, including a valve sleeve 1, a valve sleeve 2 is arranged inside the valve sleeve 1, an inner groove is opened in the valve sleeve 2, a valve core is slidably connected to the inner wall of the valve sleeve 2, a return spring is fixedly connected to the inner wall of the valve core, one end of the return spring away from the valve core is fixedly connected to the inner wall of the valve sleeve 1, and the valve core can be returned to its original position by the elastic force generated by the deformation of the return spring, and a sealing device is arranged inside the valve sleeve 2, and the sealing device includes:

[0006] A rubber ring, the rubber ring is fixedly connected to the inner groove, the rubber ring is provided with an inner cavity, and air is squeezed into the inner cavity to expand the rubber ring, thereby improving the sealing effect of the rubber ring;

[0007] An air intake pipe, one end of which passes through the rubber ring and is fixedly connected to the rubber ring, and the other end of which is fixedly connected to the inner wall of the second valve sleeve;

[0008] A sealing gasket, the sealing gasket is fixedly connected to the second inner wall of the valve sleeve;

[0009] A moving rod, the moving rod being slidably connected to the sealing gasket;

[0010] A piston block, wherein the piston block is fixedly connected to the moving rod and is slidably connected to the inner wall of the second valve sleeve;

[0011] Spring three, one end of the spring three is fixedly connected to the outer wall of the piston block, and the other end of the spring three is fixedly connected to the inner wall of the valve sleeve two.

[0012] Preferably, the valve core is penetrated by the pressing block and is slidably connected to the pressing block, one end of a spring 1 is fixedly connected to the outer wall of the pressing block, and the other end of the spring 1 is fixedly connected to the inner wall of the valve core.

[0013] Preferably, the pressing block is provided with a through slot, the through slot is slidably connected with an inclined rod, the inclined rod is provided with an inclined surface, and the inclined rod can squeeze the pressing block through the movement of the inclined rod, thereby causing the pressing block to move, and the outer wall of the inclined rod is fixedly connected with a moving block.

[0014] Preferably, a second spring is fixedly connected to the outer wall of the moving block, and one end of the second spring away from the moving block is fixedly connected to the inner wall of the valve core.

[0015] Preferably, one end of the inclined rod away from the moving block is fixedly connected to a sliding plate, and the sliding plate is slidably connected to the inner wall of the valve core.

[0016] Preferably, the second outer wall of the valve sleeve is provided with an oil outlet and an oil inlet.

[0017] The utility model provides a plug-in type liquid filling valve. It has the following beneficial effects:

[0018] (1) The plug-in filling valve has an inner cavity in the rubber ring. When oil is introduced into the oil inlet, the sliding plate slides under the action of pressure. During this process, the inclined rod exerts a force on the pressing block, causing the pressing block to move and separate from the moving rod. Subsequently, the moving rod returns to its original position under the elastic force of spring three, causing the rubber ring to return to its original state, so that the rubber ring is not tightly fitted to the outer wall of the valve core, thereby preventing the rubber ring from being worn during the movement of the valve core.

[0019] (2) When the oil inlet of the plug-in filling valve stops flowing, the valve core will slide downward under the elastic force of the return spring. At the same time, the pressing block will squeeze the moving rod, so that the moving rod drives the piston block to move downward. At this time, the air inside the valve sleeve 2 is squeezed. At this time, the squeezed air will enter the inner cavity through the air inlet pipe, thereby causing the rubber ring to expand, so that the rubber ring and the outer wall of the valve core are closely fitted, thereby improving the sealing effect of the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional new structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the valve sleeve of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the valve core of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the rubber ring of the utility model;

[0026] Figure 6 For this utility model Figure 2 Schematic diagram of the structure of A;

[0027] Figure 7 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the utility model.

[0028] Description of Figure Numbers:

[0029] 1. Valve sleeve one; 2. Valve sleeve two; 21. Oil outlet; 22. Oil inlet; 23. Inner groove; 3. Valve core; 31. Pressing block; 32. Spring one; 33. Through groove; 34. Inclined rod; 35. Moving block; 36. Spring two; 37. Sliding plate; 4. Reset spring; 5. Sealing device; 51. Rubber ring; 52. Inner cavity; 53. Inlet pipe; 54. Sealing pad; 55. Moving rod; 56. Piston block; 57. Spring three.

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-Figure 7 The utility model proposes a plug-in liquid filling valve, including a valve sleeve 1, a valve sleeve 2 is arranged inside the valve sleeve 1, an oil outlet 21 and an oil inlet 22 are arranged on the outer wall of the valve sleeve 2, an inner groove 23 is arranged on the valve sleeve 2, a valve core 3 is slidably connected to the inner wall of the valve sleeve 2, a return spring 4 is fixedly connected to the inner wall of the valve core 3, one end of the return spring 4 away from the valve core 3 is fixedly connected to the inner wall of the valve sleeve 1, and a sealing device 5 is arranged inside the valve sleeve 2.

[0033] In the embodiment of the utility model, in order to improve the sealing performance of the valve core 3, specifically, the sealing device 5 includes a rubber ring 51, the rubber ring 51 is fixedly connected to the inner groove 23, the rubber ring 51 is provided with an inner cavity 52, an air intake pipe 53, one end of the air intake pipe 53 passes through the rubber ring 51 and is fixedly connected to the rubber ring 51, and the other end of the air intake pipe 53 is fixedly connected to the inner wall of the valve sleeve 2, a sealing gasket 54, the sealing gasket 54 is fixedly connected to the inner wall of the valve sleeve 2, a moving rod 55, the moving rod 55 is slidably connected to the sealing gasket 54, a piston block 56, the piston block 56 is fixedly connected to the moving rod 55, the piston block 56 is slidably connected to the inner wall of the valve sleeve 2, and a spring 3 57, one end of the spring 3 57 is fixedly connected to the outer wall of the piston block 56, and the other end of the spring 3 57 is fixedly connected to the inner wall of the valve sleeve 2;

[0034] When the oil inlet 22 stops taking in oil, the pressure on the valve core 3 disappears, and the valve core 3 slides downward under the elastic force of the return spring 4. During this process, the pressing block 31 squeezes the moving rod 55, so that the moving rod 55 drives the piston block 56 to move downward. At the same time, the spring three 57 undergoes elastic deformation. When the piston block 56 moves downward, the air inside the valve sleeve 2 is squeezed. The squeezed air enters the inner cavity 52 through the air inlet pipe 53, thereby expanding the rubber ring 51, so that the rubber ring 51 fits tightly against the outer wall of the valve core 3, thereby improving the sealing effect of the valve core 3.

[0035] Furthermore, the valve core 3 is penetrated by the pressing block 31 and is slidably connected to the pressing block 31. The outer wall of the pressing block 31 is fixedly connected to one end of a spring 1 32, and the other end of the spring 1 32 is fixedly connected to the inner wall of the valve core 3. The pressing block 31 is provided with a through groove 33, and the through groove 33 is slidably connected to an inclined rod 34. The outer wall of the inclined rod 34 is fixedly connected to a moving block 35, and the outer wall of the moving block 35 is fixedly connected to a spring 2 36. The end of the spring 2 36 away from the moving block 35 is fixedly connected to the inner wall of the valve core 3, and the end of the inclined rod 34 away from the moving block 35 is fixedly connected to a sliding plate 37, and the sliding plate 37 is slidably connected to the inner wall of the valve core 3.

[0036] When oil enters the oil inlet 22, the sliding plate 37 slides under the action of pressure, causing the spring two 36 to undergo elastic deformation. During the movement of the sliding plate 37, the inclined rod 34 slides in the through groove 33. It should be noted that the lower end of the inclined rod 34 is wider than the upper end. When the inclined rod 34 moves, the inclined rod 34 applies a force to the pressing block 31, causing the pressing block 31 to move and separate from the moving rod 55. When the pressing block 31 separates from the moving rod 55, the pressure on the moving rod 55 disappears. At this time, the moving rod 55 returns to its original position under the elastic force of the spring three 57. During this process, the rubber ring 51 gradually returns to its original state, thereby preventing the rubber ring 51 from being worn, thereby causing damage to the rubber ring 51.

[0037] When the oil inlet 22 stops flowing, the valve core 3 will slide downward under the action of the elastic force of the return spring 4, and the pressing block 31 will squeeze the moving rod 55, so that the moving rod 55 drives the piston block 56 to move downward. At this time, the air inside the valve sleeve 2 is squeezed, and the squeezed air will enter the inner cavity 52 through the air inlet pipe 53, thereby expanding the rubber ring 51 and improving the sealing effect of the valve core 3.

[0038] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A plug-in liquid filling valve, comprising a valve sleeve (1), characterized in that: The valve sleeve one (1) is provided with a valve sleeve two (2), the valve sleeve two (2) is provided with an inner groove (23), the inner wall of the valve sleeve two (2) is slidably connected with a valve core (3), the inner wall of the valve core (3) is fixedly connected with a return spring (4), the end of the return spring (4) away from the valve core (3) is fixedly connected with the inner wall of the valve sleeve one (1), the valve sleeve two (2) is provided with a sealing device (5), the sealing device (5) comprises: A rubber ring (51), wherein the rubber ring (51) is fixedly connected to the inner groove (23), and the rubber ring (51) is provided with an inner cavity (52); An air intake pipe (53), one end of the air intake pipe (53) passes through the rubber ring (51) and is fixedly connected to the rubber ring (51), and the other end of the air intake pipe (53) is fixedly connected to the inner wall of the second valve sleeve (2); A sealing gasket (54), wherein the sealing gasket (54) is fixedly connected to the inner wall of the second valve sleeve (2); A moving rod (55), wherein the moving rod (55) is slidably connected to the sealing pad (54); A piston block (56), wherein the piston block (56) is fixedly connected to the moving rod (55), and the piston block (56) is slidably connected to the inner wall of the second valve sleeve (2); Spring three (57), one end of the spring three (57) is fixedly connected to the outer wall of the piston block (56), and the other end of the spring three (57) is fixedly connected to the inner wall of the valve sleeve two (2).

2. A cartridge-type filling valve according to claim 1, characterized in that: The valve core (3) is penetrated by the pressing block (31) and is slidably connected to the pressing block (31); one end of a spring (32) is fixedly connected to the outer wall of the pressing block (31); and the other end of the spring (32) is fixedly connected to the inner wall of the valve core (3).

3. A cartridge-type filling valve according to claim 2, characterized in that: The pressing block (31) is provided with a through slot (33), the through slot (33) is slidably connected to an inclined rod (34), and the outer wall of the inclined rod (34) is fixedly connected to a moving block (35).

4. A cartridge-type filling valve according to claim 3, characterized in that: A second spring (36) is fixedly connected to the outer wall of the moving block (35), and one end of the second spring (36) away from the moving block (35) is fixedly connected to the inner wall of the valve core (3).

5. The cartridge-type filling valve according to claim 3, characterized in that: One end of the inclined rod (34) away from the moving block (35) is fixedly connected to a sliding plate (37), and the sliding plate (37) is slidably connected to the inner wall of the valve core (3).

6. The cartridge-type filling valve according to claim 1, characterized in that: The outer wall of the valve sleeve 2 (2) is provided with an oil outlet (21) and an oil inlet (22).

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