Novel multi-slope hydraulic balance valve

Abstract

The utility model relates to the technical field of balance valves, and discloses a novel multi-slope hydraulic balance valve which comprises an outer valve sleeve, and a plurality of sets of oil return ports are formed in the left side of the outer surface of the outer valve sleeve. Through the arrangement of the first side hole, the second side hole and the third side hole, when the cone valve core is rightward, the first side hole, the second side hole and the third side hole are sequentially cancelled, and the opening degree of the valve port is determined by the covering amount of the cone valve core on the first side hole, the second side hole and the third side hole; when the cone valve element moves slightly, only the shielding amount of the first side hole can be adjusted, so that the throttling characteristic is finely adjusted, and when the cone valve element moves greatly, the shielding amount of the second side hole and the shielding amount of the third side hole can be adjusted, so that the large through-flow area is obtained. Therefore, different throttling characteristics can be obtained by adjusting the number and the arrangement mode of the first side holes, the second side holes and the third side holes, and the stability and the safety of the balance valve can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to balance valve technical field more specifically, the utility model relates to a novel multi slope hydraulic balance valve. BACKGROUND

[0002] Balance valve is load holding, speed limiting, one-way low liquid resistance and other multi-functional control valve. The principle of balance valve limiting load speed is to control the valve port opening amount to limit the flow of load back pressure chamber, avoiding the load from uncontrolled drop.

[0003] In the prior art, the side hole flow area of the balance valve is linearly related to the displacement of the valve core (as shown in Figure 7 Because the side hole flow area is sensitive to the movement stroke of the valve core, the balance valve body is prone to shaking under special working conditions, thereby affecting the stability and safety of the balance valve, and therefore needs to be improved. UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a novel multi slope hydraulic balance valve, which has the advantages of improving the stability and safety of the balance valve.

[0005] To achieve the above object, the utility model provides the following technical scheme: a novel multi slope hydraulic balance valve, comprising:

[0006] The outer valve sleeve is provided with a plurality of groups of oil return ports on the left side of the outer surface, and the inner valve sleeve is fixedly sleeved on the right side of the inner part of the outer valve sleeve.

[0007] The adjusting mechanism is arranged on the outer surface of the outer valve sleeve.

[0008] The adjusting mechanism comprises a first side hole, a second side hole and a third side hole, which are all arranged on the outer surface of the outer valve sleeve, and the inner part of the outer valve sleeve is in communication with the outer surface of the outer valve sleeve through the first side hole, the second side hole and the third side hole.

[0009] As a preferred technical scheme of the utility model, the opening diameter of the first side hole is smaller than that of the second side hole, and the opening diameter of the second side hole is smaller than that of the third side hole.

[0010] As a preferred technical scheme of the utility model, the left side of the outer valve sleeve is fixedly sleeved with a first spring seat, the inner part of the first spring seat is movably sleeved with a one-way valve seat, the outer surface of the one-way valve seat is movably sleeved with the inner part of the outer valve sleeve, the outer surface of the one-way valve seat is movably sleeved with a one-way spring, the left end of the one-way spring is fixedly connected with the outer surface of the first spring seat, and the right end of the one-way spring is fixedly connected with the outer surface of the one-way valve seat.

[0011] As a preferred technical scheme of the utility model, the inside of the outer valve sleeve is movably sleeved with a cone valve core, the outer surface of the cone valve core is fixedly sleeved with a guide sleeve, the outer surface of the guide sleeve is movably sleeved with the inside of the outer valve sleeve, the right end of the cone valve core is fixedly installed with a second spring seat, the right side of the second spring seat is fixedly installed with a pressure regulating spring, the right end of the pressure regulating spring is fixedly installed with a third spring seat, and the right side of the third spring seat is movably connected with the inside of the inner valve sleeve.

[0012] As a preferred technical scheme of the utility model, the inside of the inner valve sleeve right side is sleeved with an adjusting rod, the left end of the adjusting rod is movably connected with the right side of the third spring seat, the outer surface of the adjusting rod is threadedly sleeved with a sealing nut, and the left side of the sealing nut is attached to the right side of the inner valve sleeve.

[0013] As a preferred technical scheme of the utility model, the outer surface of the cone valve core is attached with a wear-resistant anticorrosive alloy layer, and the wear-resistant anticorrosive alloy layer is made of nickel-phosphorus-iron-chromium alloy.

[0014] As a preferred technical scheme of the utility model, the outer valve sleeve and the inner valve sleeve are both made of bidirectional steel.

[0015] As a preferred technical scheme of the utility model, the outer surface of the sealing nut is provided with an antiskid sleeve, and the antiskid sleeve is made of rubber.

[0016] Compared with the prior art, the utility model has the beneficial effects as follows:

[0017] 1、 the utility model discloses a first side hole, second side hole and third side hole are set up, when the cone valve core is in the right movement and will cancel the shielding of first side hole, second side hole and third side hole in proper order, at this time, the oil in the inside of outer valve sleeve will flow to the outside of outer valve sleeve through first side hole, second side hole and third side hole, and the valve port opening degree is determined by the covering amount of cone valve core to first side hole, second side hole and third side hole, when the displacement of cone valve core is small, can only adjust the shielding amount of first side hole, thereby fine-tuning the throttling characteristics, when the displacement of cone valve core is big, can adjust the shielding amount of second side hole and third side hole, thereby obtaining big flow area, owing to the design of first side hole, second side hole and third side hole, can obtain different throttling characteristics through adjusting the number and arrangement of first side hole, second side hole and third side hole, thereby can improve the stability and safety of balance valve.

[0018] 2. The utility model discloses a guide sleeve, adjusting rod and sealing nut are set up, because of the design of guide sleeve, the good support effect to the cone valve core can be played, make the cone valve core when moving left and right more stable, because adjusting rod and inner valve sleeve threadedly connect, when adjusting rod rotates and drives third spring seat to move left to the compression of pressure regulating spring, thereby can conveniently change the opening pressure size of first side hole, second side hole and third side hole, because sealing nut and adjusting rod threadedly connect, when sealing nut rotates and moves left and right along the outer surface of adjusting rod, when the left side of sealing nut and the right side of inner valve sleeve are attached, sealing nut will enhance the sealing property between inner valve sleeve and adjusting rod at this moment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is structure schematic diagram of the utility model;

[0020] Figure 2 It is sectional structure schematic diagram of the utility model;

[0021] Figure 3 It is structure schematic diagram of the utility overflow opening state of the utility model;

[0022] Figure 4 It is structure schematic diagram of the utility overflow opening state oil liquid flow direction of the utility model;

[0023] Figure 5 It is structure schematic diagram of the utility one-way opening state of the utility model;

[0024] Figure 6 It is structure schematic diagram of the utility one-way opening oil liquid flow direction of the utility model;

[0025] Figure 7 It is the flow area characteristic broken line graph of prior art;

[0026] Figure 8 It is the flow area characteristic broken line graph of the utility model.

[0027] In the drawing: 1, outer valve sleeve; 2, oil return port; 3, inner valve sleeve; 4, first side hole; 5, second side hole; 6, third side hole; 7, first spring seat; 8, one-way valve seat; 9, one-way spring; 10, cone valve core; 11, guide sleeve; 12, second spring seat; 13, pressure regulating spring; 14, third spring seat; 15, adjusting rod; 16, sealing nut. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] As shown in Figures 1 to 8 The utility model provides a novel multi-slope hydraulic balance valve, including:

[0030] The outer valve sleeve 1 is internally fixedly sleeved with the inner valve sleeve 3 on the right side.

[0031] The adjusting mechanism is arranged on the outer surface of the outer valve sleeve 1.

[0032] The adjusting mechanism includes the first side hole 4, the second side hole 5 and the third side hole 6, and the first side hole 4, the second side hole 5 and the third side hole 6 are all arranged on the outer surface of the outer valve sleeve 1.

[0033] The inner diameters of the first side hole 4, the second side hole 5 and the third side hole 6 are different, so that the operator can obtain different throttling characteristics by adjusting the number and arrangement of the first side hole 4, the second side hole 5 and the third side hole 6, thereby improving the stability and safety of the balance valve.

[0034] The opening diameter of the first side hole 4 is smaller than that of the second side hole, and the opening diameter of the second side hole 5 is smaller than that of the third side hole 6.

[0035] The opening diameters of the first side hole 4, the second side hole 5 and the third side hole 6 are different, so that the throttling characteristics can be fine-tuned by changing the covering amount of the first side hole 4, and different flow areas can be obtained by changing the covering amount of the second side hole 5 and the third side hole 6.

[0036] The inner surface of the outer valve sleeve 1 is internally fixedly sleeved with the first spring seat 7, the inner surface of the first spring seat 7 is movably sleeved with the one-way valve seat 8, the outer surface of the one-way valve seat 8 is movably sleeved with the one-way spring 9, the left end of the one-way spring 9 is fixedly connected with the outer surface of the first spring seat 7, and the right end of the one-way spring 9 is fixedly connected with the outer surface of the one-way valve seat 8.

[0037] When the oil liquid enters into the outer valve sleeve 1 through the oil return port 2, the oil liquid pressure will act on the right side of the one-way valve seat 8 at this time, when the oil liquid pressure reaches the set pressure of the one-way spring 9, it will drive the one-way valve seat 8 to move to the left, at this time the one-way valve seat 8 will compress the one-way spring 9, at the same time the oil liquid in the outer valve sleeve 1 will flow out of the inside of the outer valve sleeve 1 through the one-way valve seat 8.

[0038] The outer valve sleeve 1 is movably sleeved with a spool 10 in the inside, the outer surface of the spool 10 is fixedly sleeved with a guide sleeve 11, the outer surface of the guide sleeve 11 is movably sleeved with the inside of the outer valve sleeve 1, the right end of the spool 10 is fixedly installed with a second spring seat 12, the right side of the second spring seat 12 is fixedly installed with a pressure regulating spring 13, the right end of the pressure regulating spring 13 is fixedly installed with a third spring seat 14, the right side of the third spring seat 14 is movably connected with the inside of the inner valve sleeve 3.

[0039] When the oil liquid enters into the outer valve sleeve 1 through the one-way valve seat 8, the oil liquid pressure will act on the left side of the spool 10 at this time, when the oil liquid pressure reaches the set pressure of the pressure regulating spring 13, it will drive the spool 10 to move to the right, at this time the spool 10 will compress the pressure regulating spring 13 through the second spring seat 12, at this time the oil liquid in the outer valve sleeve 1 will flow out of the inside of the outer valve sleeve 1 through the first side hole 4, the second side hole 5 and the third side hole 6.

[0040] The right side of the inside of the inner valve sleeve 3 is movably sleeved with an adjusting rod 15, the left end of the adjusting rod 15 is movably connected with the right side of the third spring seat 14, the outer surface of the adjusting rod 15 is movably sleeved with a sealing nut 16, the left side of the sealing nut 16 is in contact with the right side of the inner valve sleeve 3.

[0041] Since the outer surface of the adjusting rod 15 is movably sleeved with the inside of the inner valve sleeve 3, when rotating along the inside of the inner valve sleeve 3, it will move to the left at the same time, at this time the left end of the adjusting rod 15 will compress the pressure regulating spring 13 through the third spring seat 14, thereby being able to adjust the pressure required for opening the first side hole 4, the second side hole 5 and the third side hole 6, since the inside of the sealing nut 16 is movably sleeved with the outer surface of the adjusting rod 15, when the sealing nut 16 rotates around the adjusting rod 15 as the axis, it will move left and right at the same time, when the outer surface of the sealing nut 16 is in contact with the outer surface of the inner valve sleeve 3 during movement, it will enhance the sealing performance of the connection between the adjusting rod 15 and the inner valve sleeve 3.

[0042] The outer surface of the spool 10 is attached with a wear-resistant and corrosion-resistant alloy layer, the wear-resistant and corrosion-resistant alloy layer is made of nickel-phosphorus-iron-chromium alloy.

[0043] Since the outer surface of the spool 10 is provided with a wear-resistant and corrosion-resistant alloy layer, it will be able to increase the overall structural strength of the spool 10, thereby increasing the overall service life of the spool 10.

[0044] The outer valve sleeve 1 and the inner valve sleeve 3 are made of bidirectional steel.

[0045] The outer valve sleeve 1 and the inner valve sleeve 3 are made of bidirectional steel, so that the structural strength and toughness of the outer valve sleeve 1 and the inner valve sleeve 3 are well coordinated, and the outer valve sleeve 1 and the inner valve sleeve 3 are more solid and durable.

[0046] The outer surface of the sealing nut 16 is provided with an anti-skid sleeve made of rubber.

[0047] The anti-skid sleeve is made of rubber, so that the operator can easily twist the sealing nut 16, and the rubber anti-skid sleeve can enhance the sealing between the adjusting rod 15 and the oil return port 2.

[0048] The working principle and use process of the utility model are as follows:

[0049] When the oil enters the inside of the outer valve sleeve 1 through the oil return port 2, the oil pressure will act on the left side of the conical valve core 10 at this time, and when the oil pressure is greater than the spring force of the pressure regulating spring 13, the conical valve core 10 will move rightward along the inside of the outer valve sleeve 1 under the action of the oil pressure. Since the guide sleeve 11 is designed, it can guide the movement of the outer valve sleeve 1 as a whole, so that the outer valve sleeve 1 moves leftward and rightward more stably. At the same time, the conical valve core 10 will push the second spring seat 12 to move rightward, and then the second spring seat 12 will compress the pressure regulating spring 13. At this time, the outer surface of the conical valve core 10 will cancel the shielding of the first side hole 4, the second side hole 5 and the third side hole 6 in sequence during the rightward movement. At this time, the oil in the inside of the outer valve sleeve 1 will overflow through the first side hole 4, the second side hole 5 and the third side hole 6, and the valve opening degree is determined by the shielding amount of the conical valve core 10 to the first side hole 4, the second side hole 5 and the third side hole 6. When the conical valve core 10 has a small displacement, the first side hole 4 with a smaller hole diameter is used to fine-tune the throttling characteristics. When the conical valve core 10 has a large displacement, the second side hole 5 and the third side hole 6 with larger hole diameters are used to obtain a large flow area, so that different throttling characteristics are obtained by adjusting the number and arrangement of the first side hole 4, the second side hole 5 and the third side hole 6, and the functions of improving the stability and safety of the balance valve are realized.

[0050] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A new type of multi-slope hydraulic balancing valve, characterized in that: Includes: An outer valve sleeve (1), wherein a plurality of oil return ports (2) are provided on the left side of the outer surface of the outer valve sleeve (1), and an inner valve sleeve (3) is fixedly sleeved on the inside of the right side of the outer valve sleeve (1); An adjusting mechanism, the adjusting mechanism being arranged on the outer surface of the outer valve sleeve (1); The regulating mechanism comprises a first side hole (4), a second side hole (5) and a third side hole (6), the first side hole (4), the second side hole (5) and the third side hole (6) are all opened on the outer surface of the outer valve sleeve (1), and the interior of the outer valve sleeve (1) is connected to the outer surface of the outer valve sleeve (1) through the first side hole (4), the second side hole (5) and the third side hole (6).

2. A novel multi-slope hydraulic balancing valve according to claim 1, characterized in that: The opening diameter of the first side hole (4) is smaller than the opening diameter of the second side hole, and the opening diameter of the second side hole (5) is smaller than the opening diameter of the third side hole (6).

3. The novel multi-slope hydraulic balancing valve according to claim 1 is characterized in that: The left side of the outer valve sleeve (1) is internally fixedly sleeved with a first spring seat (7), the first spring seat (7) is internally movably sleeved with a one-way valve seat (8), the outer surface of the one-way valve seat (8) is movably sleeved with the inner surface of the outer valve sleeve (1), the outer surface of the one-way valve seat (8) is movably sleeved with a one-way spring (9), the left end of the one-way spring (9) is fixedly connected to the outer surface of the first spring seat (7), and the right end of the one-way spring (9) is fixedly connected to the outer surface of the one-way valve seat (8).

4. The novel multi-slope hydraulic balancing valve according to claim 1 is characterized in that: The outer valve sleeve (1) is internally movably sleeved with a cone valve core (10), the outer surface of the cone valve core (10) is fixedly sleeved with a guide sleeve (11), the outer surface of the guide sleeve (11) is movably sleeved with the inner portion of the outer valve sleeve (1), the right end of the cone valve core (10) is fixedly mounted with a second spring seat (12), the right side of the second spring seat (12) is fixedly mounted with a pressure regulating spring (13), the right end of the pressure regulating spring (13) is fixedly mounted with a third spring seat (14), the right side of the third spring seat (14) is movably connected with the inner portion of the inner valve sleeve (3).

5. The novel multi-slope hydraulic balancing valve according to claim 1 is characterized in that: An adjusting rod (15) is sleeved on the inner thread of the right side of the inner valve sleeve (3), and the left end of the adjusting rod (15) is movably connected to the right side of the third spring seat (14). A sealing nut (16) is sleeved on the outer surface of the adjusting rod (15), and the left side of the sealing nut (16) is in contact with the right side of the inner valve sleeve (3).

6. The novel multi-slope hydraulic balancing valve according to claim 4 is characterized in that: The outer surface of the cone valve core (10) is provided with a wear-resistant and corrosion-resistant alloy layer, and the wear-resistant and corrosion-resistant alloy layer is made of nickel-phosphorus-iron-chromium alloy.

7. The novel multi-slope hydraulic balancing valve according to claim 1 is characterized in that: The outer valve sleeve (1) and the inner valve sleeve (3) are both made of bidirectional steel.

8. The novel multi-slope hydraulic balancing valve according to claim 5 is characterized in that: The outer surface of the sealing nut (16) is provided with an anti-slip sleeve, and the anti-slip sleeve is made of rubber.

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