An adjustable balancing valve

Abstract

This utility model belongs to the field of balancing valve technology and discloses an adjustable balancing valve, including a valve body. The output end of the valve body is fixedly connected to a connecting flange, and the input end of the valve body is fixedly connected to a positioning flange. A sealing assembly is installed inside the positioning flange. A locking assembly is rotatably connected to the positioning flange near the connecting flange on the outside of the valve body. Several connecting assemblies, evenly distributed on the outside of the valve body, are connected inside the locking assembly. The other end of each connecting assembly passes through the positioning flange and the sealing assembly. This utility model, with the cooperation of the sealing assembly, allows workers to quickly and effectively separate the input and output ends of the valve body at any time, ensuring connection safety. Furthermore, the cooperation of the positioning flange and sealing assembly facilitates the installation of the valve body in environments where the input and output ends of the pipeline are at different distances, effectively improving installation efficiency and applicability.

Description

Technical Field

[0001] This utility model belongs to the field of balance valve technology, specifically an adjustable balance valve. Background Technology

[0002] Balancing valves are commonly used in construction machinery, lifting and transportation machinery, and play an indispensable role in improving the performance of certain mechanisms in these machines. Without a balancing valve, the mechanism will run at overspeed under load, posing a significant safety hazard. To prevent danger and achieve smooth and precise descent, a balancing valve that limits the load descent must be installed in the descent circuit.

[0003] Existing balancing valves include static balancing valves, dynamic balancing valves, and many further subdivided balancing valves. They are sealed to pipelines through flanges that are fixed at both ends. However, the pipelines at both ends are often pre-laid, and during the installation of the balancing valve, the distance between the pipelines at both ends is inevitably short or long, making it difficult to accurately install the valve body onto the pipeline. Furthermore, the valve body is usually marked with flow direction indicators, meaning that the connection at both ends of the balancing valve must correspond one-to-one, unlike other valves where the two ends can be interchanged. However, over a long period of use, the markings on the valve body surface gradually become blurred, affecting the installation for secondary use. Therefore, there is a need to develop an adjustable balancing valve to address the shortcomings of existing technologies. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides an adjustable balancing valve, which has the advantages of easy installation and high applicability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable balancing valve, comprising a valve body, wherein a connecting flange is fixedly connected to the output end of the valve body, a positioning flange is fixedly connected to the input end of the valve body, a sealing assembly is installed inside the positioning flange, and a locking assembly is rotatably connected to the side of the positioning flange near the connecting flange on the outside of the valve body; a plurality of connecting assemblies are connected inside the locking assembly and are evenly distributed outside the valve body; the other end of the connecting assembly passes through the positioning flange and the sealing assembly.

[0006] The sealing assembly includes a sleeve that is movably fitted inside the valve body and the positioning flange. The input end of the sleeve extends to the outside of the valve body and the positioning flange and is fixedly connected to a sealing flange. Sealing gaskets are fixedly connected to the opposite sides of the sealing flange and the connecting flange. A sealing cavity is opened inside the positioning flange. The inner side of the sealing cavity is connected to the gap between the valve body, the positioning flange, and the outer surface of the sleeve. A sealing ring that is fixedly fitted to the outer surface of the sleeve is fixed inside the sealing cavity.

[0007] Preferably, the valve body is threaded with an adjusting sleeve, and a plurality of evenly distributed linkage rods are slidably engaged on the side of the adjusting sleeve near the positioning flange, and a piston is fixedly connected to the other end of the linkage rods.

[0008] Preferably, the outer surface of the positioning flange has a plurality of evenly distributed through holes on the side near the adjusting sleeve, and the plurality of through holes correspond one-to-one with the piston, and the piston is sealed inside the through holes.

[0009] Preferably, the locking assembly includes a locking sleeve that is movably sleeved on the outside of the adjusting sleeve. One end of the locking sleeve is movably sleeved with a retaining ring, and the other end of the retaining ring passes through the locking sleeve and is fixedly connected to the positioning flange. The inner wall of the locking sleeve is provided with linkage teeth.

[0010] Preferably, both the outer surfaces of the adjusting sleeve and the locking sleeve are rough surfaces, and the distance between the end of the adjusting sleeve away from the positioning flange and the positioning flange is greater than the distance between the end of the locking sleeve away from the positioning flange and the positioning flange.

[0011] Preferably, the connecting assembly includes a connecting rod passing through the inside of the sealing assembly. A retaining ring is fixedly sleeved on the outer surface of the connecting rod and fits against the end of the sealing assembly near the positioning flange. The end of the connecting rod away from the positioning flange extends to the outside of the sealing assembly and is connected to a connector. The other end of the connecting rod is connected to an adjusting screw threaded into the inside of the positioning flange. The other end of the adjusting screw is fixedly connected to a linkage gear meshing with the inner side of the linkage teeth.

[0012] Preferably, the top of the valve body is provided with a valve control assembly and two pressure testing holes. The valve control assembly consists of a valve seat, a shaft seal, a valve stem, an adjusting knob, and an indicator dial. The valve seat is integrally formed on the top of the valve body. The shaft seal is fixedly connected to the top of the valve seat. The valve stem is sealed inside the shaft seal. The lower end of the valve stem extends into the interior of the valve body and is connected to a valve core. The lower ends of the two pressure testing holes are located on both sides of the valve core. The upper end of the valve stem extends above the shaft seal and is fixedly connected to an adjusting knob. An indicator dial is provided on the adjusting knob.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Due to the connection flange, this utility model, with the cooperation of sealing components, allows workers to quickly and effectively separate the input and output ends of the valve body at any time, ensuring connection safety. Moreover, with the cooperation of positioning flange and sealing components, it is easy to install the valve body in environments where the input and output ends of the pipeline are at different distances, effectively improving installation efficiency and applicability.

[0015] 2. Due to the design of the sealing components, this utility model ensures that the input end can be quickly and conveniently sealed and connected to the front end of the valve body with the cooperation of the sleeve and sealing ring. Even when the valve body is installed in a pipeline in a different environment, it is also easy to quickly complete the sealing, thereby further improving the installation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is a sectional view of the front of the positioning flange of this utility model;

[0019] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the connecting component of this utility model.

[0021] In the diagram: 1. Valve body; 2. Connecting flange; 3. Positioning flange; 4. Sealing assembly; 41. Sealing flange; 42. Sleeve; 43. Sealing cavity; 44. Sealing ring; 45. Through hole; 46. Adjusting sleeve; 47. Linkage rod; 48. Piston; 5. Sealing gasket; 6. Locking assembly; 61. Locking sleeve; 62. Snap ring; 63. Linkage gear; 7. Connecting assembly; 71. Connecting rod; 72. Pressure retaining ring; 73. Connecting head; 74. Adjusting screw; 75. Linkage gear; 8. Valve control assembly; 81. Valve seat; 82. Shaft seal; 83. Valve stem; 84. Adjusting knob; 85. Indicator dial; 9. Pressure test hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 5As shown, this utility model provides an adjustable balancing valve, including a valve body 1. The output end of the valve body 1 is fixedly connected to a connecting flange 2, and the input end of the valve body 1 is fixedly connected to a positioning flange 3. A sealing assembly 4 is installed inside the positioning flange 3. A locking assembly 6 is rotatably connected to the side of the positioning flange 3 near the connecting flange 2 and sleeved on the outside of the valve body 1. Several connecting assemblies 7 are evenly distributed on the outside of the valve body 1 and connected inside the locking assembly 6. The other end of the connecting assembly 7 passes through the positioning flange 3 and the sealing assembly 4. Due to the setting of the connecting flange 2, with the cooperation of the sealing assembly 4, etc., it is convenient for the staff to quickly and effectively separate the input and output ends of the valve body at any time, ensuring connection safety. Moreover, with the cooperation of the positioning flange 3 and the sealing assembly 4, etc., it is convenient to install the valve body in environments where the input and output ends of the pipeline are at different distances, effectively improving installation efficiency and applicability.

[0024] The sealing assembly 4 includes a sleeve 42 that is movably fitted inside the valve body 1 and the positioning flange 3. The input end of the sleeve 42 extends to the outside of the valve body 1 and the positioning flange 3 and is fixedly connected to a sealing flange 41. Sealing gaskets 5 are fixedly connected to the opposite sides of the sealing flange 41 and the connecting flange 2. A sealing cavity 43 is opened inside the positioning flange 3. The inner side of the sealing cavity 43 communicates with the gap between the valve body 1, the positioning flange 3 and the outer surface of the sleeve 42. A sealing ring 44 is fixedly fitted inside the sealing cavity 43 and seals against the outer surface of the sleeve 42. Due to the setting of the sealing assembly 4, the sleeve 42 and the sealing ring 44, etc., ensure that the input end can be quickly and conveniently sealed and connected to the front end of the valve body 1. Even when the valve body 1 is installed in a pipeline in a different environment, it is also easy to quickly complete the sealing, thereby further improving the installation efficiency.

[0025] The valve body 1 is externally threaded with an adjusting sleeve 46. The adjusting sleeve 46 is slidably engaged with several evenly distributed linkage rods 47 on the side near the positioning flange 3. The other end of the linkage rods 47 is fixedly connected to a piston 48. Due to the setting of the piston 48, with the cooperation of the through hole 45 and the sealing cavity 43, the axially moving adjusting sleeve 46 can force the air in the through hole 45 into the sealing cavity 43 through the piston 48, thereby causing the sealing cavity 43 to expand and seal against the outer surface of the sleeve 42, ensuring that the sealing flange 41 is sealed and connected to the valve body 1 through the sleeve 42.

[0026] Among them, the outer surface of the positioning flange 3 is provided with a number of evenly distributed through holes 45 on the side near the adjusting sleeve 46. The number of through holes 45 corresponds one-to-one with the piston 48, and the piston 48 is sealed and fitted inside the through holes 45.

[0027] The locking assembly 6 includes a locking sleeve 61 that is movably sleeved on the outside of the adjusting sleeve 46. One end of the locking sleeve 61 is movably sleeved with a retaining ring 62, and the other end of the retaining ring 62 passes through the locking sleeve 61 and is fixedly connected to the positioning flange 3. The inner wall of the locking sleeve 61 is provided with linkage teeth 63. Due to the setting of linkage teeth 63, under the restriction of the retaining ring 62, it is ensured that the operator can control the locking sleeve 61 to rotate smoothly, and then drive several connecting assemblies 7 to rotate smoothly at the same time with the cooperation of the positioning flange 3, so that the sealing assembly 4 is accurately connected to the input end of the pipeline.

[0028] The outer surfaces of the adjusting sleeve 46 and the locking sleeve 61 are both rough surfaces. The distance between the end of the adjusting sleeve 46 away from the positioning flange 3 and the positioning flange 3 is greater than the distance between the end of the locking sleeve 61 away from the positioning flange 3 and the positioning flange 3.

[0029] The connecting component 7 includes a connecting rod 71 that passes through the sealing component 4. A retaining ring 72 is fixedly sleeved on the outer surface of the connecting rod 71 and fits against the end of the sealing component 4 near the positioning flange 3. The end of the connecting rod 71 away from the positioning flange 3 extends to the outside of the sealing component 4 and is connected to a connector 73. The other end of the connecting rod 71 is connected to an adjusting screw 74 that is threaded into the positioning flange 3. The other end of the adjusting screw 74 is fixedly connected to a linkage gear 75 that meshes with the inner side of the linkage teeth 63. Due to the setting of the retaining ring 72, after the connector 73 is screwed into the pipeline inlet flange, the sealing component 4 and the inlet flange can be tightly fitted under the pressure of the retaining ring 72, and a sealing connection is achieved through the sealing gasket 5.

[0030] The valve body 1 has a valve control assembly 8 and two pressure testing holes 9 on its top. The valve control assembly 8 consists of a valve seat 81, a shaft seal 82, a valve stem 83, an adjustment knob 84, and an indicator dial 85. The valve seat 81 is integrally formed on the top of the valve body 1. The shaft seal 82 is fixedly connected to the top of the valve seat 81. The valve stem 83 is sealed inside the shaft seal 82. The lower end of the valve stem 83 extends into the interior of the valve body 1 and is connected to the valve core. The lower ends of the two pressure testing holes 9 are located on both sides of the valve core. The upper end of the valve stem 83 extends above the shaft seal 82 and is fixedly connected to the adjustment knob 84. The adjustment knob 84 is equipped with an indicator dial 85.

[0031] Working principle and usage process of this utility model:

[0032] First, with the bolts in place, one end of the valve body 1 is fixedly connected to the pipeline output end via the connecting flange 2. Then, the locking sleeve 61 is rotated so that, under the restriction of the retaining ring 62, it drives several linkage gears 75 to rotate via the linkage teeth 63. Then, with the cooperation of the positioning flange 3 and the adjusting screw 74, the connecting assembly 7 moves axially along its axis. Then, through the pressure ring 72 and the connector 73, the sealing flange 41 and the sleeve 42 move axially until the outer side of the sealing flange 41 is in contact with the pipeline input end. During this period, the sleeve 42 slides axially along the inside of the valve body 1 and the positioning flange 3. Then, by continuing to rotate the valve body 1, under the restriction of the sealing flange 41 by the input end flange, the connector 73 is tightened into the bolt hole of the pipeline input end flange until, with the cooperation of the pressure ring 72, the sealing flange 41 and the input end flange are tightly fitted by the sealing gasket 5.

[0033] Then, by rotating the adjusting sleeve 46, it can push several linkage rods 47 to move axially with the cooperation of the valve body 1, and push the piston 48 to move along the inside of the through hole 45, thereby forcing the air in the several through holes 45 into the sealing cavity 43, causing the sealing ring 44 to expand, and then its inner wall to seal against the outer surface of the sleeve 42. The output end is sealed and connected to the input end through the connecting flange 2, valve body 1, sleeve 42 and sealing flange 41.

[0034] Then, with the cooperation of the indicator panel 85, the rotation angle of the adjustment knob 84 is controlled, so that with the cooperation of the valve seat 81 and the shaft seal 82, the valve core inside the valve body 1 is driven by the valve stem 83 to move quantitatively, so that the medium in the pipeline can flow. During this process, the pressure on both sides of the valve core can be detected in real time through the two pressure measuring holes 9.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable balancing valve comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to a connecting flange (2) at its output end and to a positioning flange (3) at its input end. A sealing assembly (4) is installed inside the positioning flange (3). A locking assembly (6) is rotatably connected to the positioning flange (3) on the side near the connecting flange (2) on the outside of the valve body (1). Several connecting assemblies (7) are evenly distributed outside the valve body (1) and connected inside the locking assembly (6). The other end of the connecting assembly (7) passes through the positioning flange (3) and the sealing assembly (4). The sealing assembly (4) includes a sleeve (42) that is movably fitted inside the valve body (1) and the positioning flange (3). The input end of the sleeve (42) extends to the outside of the valve body (1) and the positioning flange (3) and is fixedly connected to a sealing flange (41). Sealing gaskets (5) are fixedly connected to the opposite sides of the sealing flange (41) and the connecting flange (2). A sealing cavity (43) is opened inside the positioning flange (3). The inner side of the sealing cavity (43) is connected to the gap between the valve body (1), the positioning flange (3) and the outer surface of the sleeve (42). A sealing ring (44) that is fixedly fitted to the outer surface of the sleeve (42) is fixedly fitted inside the sealing cavity (43).

2. An adjustable balance valve according to claim 1, characterised in that: The valve body (1) is threaded with an adjusting sleeve (46), and the adjusting sleeve (46) is slidably engaged with a plurality of evenly distributed linkage rods (47) on the side near the positioning flange (3). The other end of the linkage rods (47) is fixedly connected to a piston (48).

3. An adjustable balance valve according to claim 2, characterized in that: The outer surface of the positioning flange (3) near the adjusting sleeve (46) has a plurality of evenly distributed through holes (45), and the plurality of through holes (45) correspond one-to-one with the piston (48), and the piston (48) is sealed inside the through hole (45).

4. An adjustable balance valve according to claim 2, characterized in that: The locking assembly (6) includes a locking sleeve (61) that is movably sleeved on the outside of the adjusting sleeve (46). One end of the locking sleeve (61) is movably sleeved with a retaining ring (62), and the other end of the retaining ring (62) passes through the locking sleeve (61) and is fixedly connected to the positioning flange (3). The inner wall of the locking sleeve (61) is provided with linkage teeth (63).

5. An adjustable balance valve according to claim 4, characterized in that: The outer surfaces of the adjusting sleeve (46) and the locking sleeve (61) are both rough surfaces. The distance between the end of the adjusting sleeve (46) away from the positioning flange (3) and the positioning flange (3) is greater than the distance between the end of the locking sleeve (61) away from the positioning flange (3) and the positioning flange (3).

6. An adjustable balance valve according to claim 4, characterized in that: The connecting assembly (7) includes a connecting rod (71) passing through the sealing assembly (4). A retaining ring (72) is fixedly sleeved on the outer surface of the connecting rod (71) and fits against the end of the sealing assembly (4) near the positioning flange (3). The end of the connecting rod (71) away from the positioning flange (3) extends to the outside of the sealing assembly (4) and is connected to a connector (73). The other end of the connecting rod (71) is connected to an adjusting screw (74) threaded into the inside of the positioning flange (3). The other end of the adjusting screw (74) is fixedly connected to a linkage gear (75) meshing with the inner side of the linkage teeth (63).

7. An adjustable balance valve according to claim 1, characterized in that: The valve body (1) is provided with a valve control assembly (8) and two pressure test holes (9) at the top. The valve control assembly (8) consists of a valve seat (81), a shaft seal (82), a valve stem (83), an adjustment knob (84), and an indicator plate (85). The valve seat (81) is integrally formed on the top of the valve body (1). The shaft seal (82) is fixedly connected to the top of the valve seat (81). The valve stem (83) is sealed inside the shaft seal (82). The lower end of the valve stem (83) extends into the interior of the valve body (1) and is connected to the valve core. The lower ends of the two pressure test holes (9) are located on both sides of the valve core. The upper end of the valve stem (83) extends above the shaft seal (82) and is fixedly connected to the adjustment knob (84). The adjustment knob (84) is provided with an indicator plate (85).

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