Balance valve with high sensitivity

Abstract

The utility model discloses a balance valve with high sensitivity, which comprises a valve casing, a valve rod is inserted in an inner cavity of the valve casing, air inlet holes distributed at equal intervals are arranged at the bottom of the surface of the valve casing, a butt joint piece parallel to the air inlet holes is arranged at the bottom of the inner cavity of the valve casing, the bottom end of the valve rod extends into an inner cavity of the butt joint piece, and the valve rod is connected with the valve casing. A butt joint piece is arranged in the valve shell, a valve rod is arranged in the butt joint piece, a vent hole located in an inner cavity of the butt joint piece is formed in the bottom of the surface of the valve rod, a compensation assembly is connected to the bottom of an inner cavity of the valve shell in an inserted mode, and a first spring is connected to the top end of the valve rod in a buckled mode. Compared with the prior art, the balance valve has quicker and more flexible moving performance, meanwhile, through compensation, the valve rod can reach the working position more accurately, the balance valve can enter the working state more quickly, and convenience is provided for use of a user.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing valves, in particular to a balancing valve with high sensitivity. Background Art

[0002] The balancing valve is a regulating valve with a special digital locking function. The balancing valve adopts a DC valve body structure, has better equal percentage flow characteristics, can reasonably distribute the flow, and effectively solve the problem of uneven room temperature in the heating (air conditioning) system. The traditional balancing valve structure generally adopts a single thrust and single reset structure to realize the movement and reset of the valve stem. That is to say, the movement of the valve stem is driven by a spring structure. This working method makes the working movement of the balancing valve stem prone to errors, especially after long-term use, the elastic force of the spring weakens, and the valve stem is more difficult to move to the working position accurately and difficult to reset completely.

[0003] In view of the above problems, the present invention makes improvements. Summary of the invention

[0004] The utility model provides a balancing valve with high sensitivity, which solves the above problems existing in the use process of the prior art.

[0005] The technical solution of the utility model is achieved as follows: a highly sensitive balancing valve comprises a valve housing, an inner cavity of the valve housing is connected with a valve stem, the bottom of the valve housing surface is provided with air inlet holes distributed at equal intervals, the bottom of the inner cavity of the valve housing is provided with a docking piece parallel to the air inlet hole, the bottom end of the valve stem extends into the inner cavity of the docking piece, the bottom of the valve stem surface is provided with an air vent located in the inner cavity of the docking piece, a compensation component is connected with the bottom of the inner cavity of the valve housing, a spring 1 is buckled at the top end of the valve stem, a spring 2 sleeved on the outside of the spring 1 is provided at the top end of the valve stem, a top block is connected to the inner sides of the spring 1 and the spring 2, a valve cover located above the valve stem is connected to the top of the valve housing, the valve cover is sleeved on the outside of the spring 1 and the spring 2, and an adjusting rod is connected to the top of the top block.

[0006] The utility model is used for a high-sensitivity balancing valve as described above, further: the top end of the adjusting rod penetrates to the top of the valve cover, the surface of the adjusting rod is threadedly installed with a fixing nut, and the fixing nut is fixedly connected to the top of the valve cover.

[0007] The utility model is used for a high-sensitivity balancing valve as described above, further comprising: a compensation component comprising a compensation sleeve inserted into the bottom of the valve housing, a sealing ring 1 being embedded and sleeved on one side of the surface of the compensation sleeve, and the sealing ring 1 being tightly attached to the inner wall of the valve housing.

[0008] The utility model is used for a high-sensitivity balancing valve as described above, further: a spring seat is inserted into one side of the compensation sleeve, a compensation spring is sleeved on the surface of the spring seat, and one end of the compensation spring away from the spring seat is inserted into the interior of the compensation sleeve.

[0009] The utility model is used for a high-sensitivity balancing valve as described above, further comprising: a clamping ring is arranged at the bottom of the spring seat, and the surface of the clamping ring is embedded and installed on the inner wall of the valve housing.

[0010] The utility model is a balancing valve with high sensitivity as described above, further comprising: two sealing rings 2 are sleeved on the surface of the valve stem, and the two sealing rings 2 are both tightly attached to the inner wall of the valve housing.

[0011] The utility model is used for a high-sensitivity balancing valve as described above, further: the surface of the valve shell is sleeved with a sealing ring three, a sealing ring four and a sealing ring five, and the sealing ring three, the sealing ring four and the sealing ring five are distributed in sequence from top to bottom.

[0012] In summary, the beneficial effects of the present invention are:

[0013] 1. The utility model adopts a double thrust, double reset architecture and a two-way reset compensation structural design, so that the valve stem of the balancing valve can have a faster and more flexible movement performance during the working process. At the same time, after compensation, the valve stem can reach the working position more accurately, so that the balancing valve can enter the working state more quickly, providing convenience for users.

[0014] 2. The utility model adopts the setting of the fixing nut, because the fixing nut is fixedly connected to the valve housing, and the adjusting rod and the fixing nut are threadedly connected. Therefore, after the adjusting rod is rotated to a suitable position, the adjusting rod can be positioned at the current position through the fixing nut, and the top block can also be positioned at the current position, thereby ensuring the stability of the connection between the top block and the spring 2 and meeting the user's usage requirements.

[0015] 3. The utility model provides a compensation component. When the valve stem is working, it will touch the compensation sleeve and then drive the compensation sleeve to move. At this time, the compensation sleeve will compress the compensation spring, and also move on the spring seat and slide in the inner cavity of the valve shell. Then, after the valve stem moves, the compensation sleeve will reset under the action of the compensation spring, and then the compensation sleeve will push the valve stem back, thereby pushing the valve stem back to the correct position, so as to achieve compensation for the working stroke of the valve stem. Specifically, in the original state, spring one and spring two push the valve stem downward, and a part of the end of the valve stem extends into the compensation sleeve, and pushes the compensation sleeve to move a little distance on the spring seat, and compresses the compensation spring at the same time. Since the thrust of spring one and spring two is greater than the thrust of the compensation spring, the compensation sleeve will compress the compensation spring when it moves, and this state is a non-working state.

[0016] 4. The utility model provides a clamping ring, which is used to fix the spring seat inside the valve housing. A groove adapted to the clamping ring is opened on the inner wall at a corresponding position of the inner cavity of the valve housing. Therefore, after the spring seat is installed, the clamping ring is clamped in the corresponding groove, so that the spring seat can be fixed inside the valve housing to complete the installation work.

[0017] 5. The utility model provides two sealing rings, wherein the two sealing rings are provided between the outer wall of the valve stem and the inner wall of the valve housing, so that the gap between the valve stem and the valve housing can be sealed, thereby ensuring the sealing of the balancing valve and ensuring that the balancing valve can work normally.

[0018] 6. The utility model arranges sealing ring three, sealing ring four and sealing ring five. The sealing ring three, sealing ring four and sealing ring five are sleeved on the surface of the valve shell. When the whole balancing valve is installed on the equipment, the sealing ring three, sealing ring four and sealing ring five will be tightly attached to the inner wall of the equipment. In this way, the sealing performance of the balancing valve after installation can be guaranteed, the normal operation of the equipment can be guaranteed, and the work of the user can be convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the planar structure of the utility model;

[0022] Figure 3It is a schematic cross-sectional view of the planar structure of the utility model.

[0023] In the figure: 1, valve housing, 2, valve stem, 3, air inlet, 4, docking piece, 5, vent, 6, spring one, 7, spring two, 8, top block, 9, adjusting rod, 10, fixing nut, 11, compensation sleeve, 12, spring seat, 13, compensation spring, 14, retaining ring, 15, sealing ring one, 16, sealing ring two, 17, sealing ring three, 18, valve cover, 19, sealing ring four, 20, sealing ring five. DETAILED DESCRIPTION

[0024] The following will be combined with the attached embodiment of the present utility model Figure 1-3 , 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 them. Based on the embodiments of 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. Example

[0025] A highly sensitive balancing valve comprises a valve housing 1, wherein a valve stem 2 is inserted into the inner cavity of the valve housing 1, and air inlet holes 3 distributed at equal intervals are provided at the bottom of the surface of the valve housing 1, and a docking piece 4 parallel to the air inlet holes 3 is provided at the bottom of the inner cavity of the valve housing 1, and the bottom end of the valve stem 2 extends into the inner cavity of the docking piece 4, and a vent hole 5 located in the inner cavity of the docking piece 4 is provided at the bottom of the surface of the valve stem 2, and a compensation component is inserted into the bottom of the inner cavity of the valve housing 1, and a spring 1 6 is buckled at the top end of the valve stem 2, and a spring 2 7 sleeved on the outside of the spring 1 6 is provided at the top end of the valve stem 2, and a top block 8 is inserted into the inner sides of the spring 1 6 and the spring 2 7, and a valve cover 18 located above the valve stem 2 is inserted into the top of the valve housing 1, and the valve cover 18 is sleeved on the outside of the spring 1 6 and the spring 2 7, and an adjusting rod 9 is inserted into the top of the top block 8.

[0026] The specific usage process is as follows: first install the balancing valve on the required equipment, then start the equipment, then the balancing valve will also start working, and then under the drive of the equipment, the medium output in the equipment will enter the air inlet 3 through the corresponding pipeline, and then enter the docking piece 4, and then enter the inner cavity of the vent 5. Since the medium (various types of flowable substances) has a large pressure difference or flow difference in various parts of the pipeline or container, the medium entering the balancing valve at this time will push the valve stem 2 up under the action of the pressure difference, because the fixing nut 10 is fixedly connected to the valve housing 1, and the adjusting rod 9 and the fixing nut 10 are threadedly connected, so after the adjusting rod 9 is rotated to the appropriate position, the adjusting rod 9 can be moved through the fixing nut 10. 9 is positioned at the current position, and the top block 8 can also be positioned at the current position, ensuring the stability of the connection between the top block 8 and the spring 2 7 to meet the user's usage needs. Therefore, the adjusting rod 9 is stationary, and the spring 1 6 and the spring 2 7 are also stationary. Therefore, when the valve stem 2 moves upward, or the spring 1 6 and the spring 2 7 are compressed at the same time, compared with the traditional spring structure, this solution adds a spring on the basis of the original number of springs, that is to say, there are two springs in this solution, spring 1 6 and spring 2 7. It should be noted that the principle of the specific medium pushing the valve stem 2 to move is the existing technology, and no more explanation is given in the text. Then, the vent hole 5 moves with the valve stem 2 and is located in the inner cavity of the docking piece 4, so that the air inlet 3, the docking piece 4 and the vent hole 5 will form a connecting line. It should be noted that, in the original state, spring 1 6 and spring 2 7 push the valve stem 2 downward, and a part of the end of the valve stem 2 extends into the compensation sleeve 11, and pushes the compensation sleeve 11 to move a little distance on the spring seat 12, and compresses the compensation spring 13. Since the thrust of spring 1 6 and spring 2 7 is greater than the thrust of the compensation spring 13, the compensation sleeve 11 will compress the compensation spring 13 when it moves. This state is a non-working state. With the entry of the medium, the pressure of the medium, plus the progress of the work, or the weakening of the medium flow, or the shutdown of the machine and equipment, the medium flowing in the air inlet 3, the docking piece 4 and the vent 5 will gradually decrease, and the pressure will also gradually weaken. On the contrary, the medium pressure in the balancing valve will increase. In addition, the thrust of the compensation spring 13 is greater than the thrust of the spring 1 6 and the spring 2 7, so the valve stem 2 can be pushed upward. As the medium pressure weakens, the valve stem 2 will move downward under the push of the spring 1 6 and the spring 2 7, and the end of the valve stem 2 will push the compensation sleeve 11 downward again, and compress the compensation spring 13 at the same time, so that resetting can be achieved. In this way, springs are set at both ends of the balancing valve, and the valve stem 2 can be pushed up and down according to the pressure of the medium to realize the opening and closing of the balancing valve. Compared with the traditional balancing valve structure, more flexible work can be achieved, more precise work can be achieved, the sensitivity of the balancing valve is improved, and convenience is provided for users. It should be noted that the elastic force of the air inlet 3 is smaller than that of the spring 1 6 and the spring 2 7.In this way, there will be a certain elastic difference, so that more usage conditions can be met. The specific details depend on the actual situation. This is the existing technology.

[0027] Therefore, the double thrust, double reset architecture and two-way reset compensation structural design are adopted, so that the valve stem of the balancing valve can have faster and more flexible movement performance during the working process. At the same time, after compensation, the valve stem can reach the working position more accurately, so that the balancing valve can enter the working state more quickly, providing convenience for users.

[0028] The top end of the adjusting rod 9 penetrates to the top of the valve cover 18 , and a fixing nut 10 is threadedly installed on the surface of the adjusting rod 9 , and the fixing nut 10 is fixedly connected to the top of the valve cover 18 .

[0029] Specifically, the setting of the fixing nut 10 is that the fixing nut 10 is fixedly connected to the valve housing 1, and the adjusting rod 9 and the fixing nut 10 are threadedly connected. Therefore, after the adjusting rod 9 is rotated to a suitable position, the adjusting rod 9 can be positioned at the current position through the fixing nut 10, and the top block 8 can also be positioned at the current position, thereby ensuring the stability of the connection between the top block 8 and the spring 2 7 and meeting the user's usage requirements.

[0030] The compensation component includes a compensation sleeve 11 inserted into the bottom of the valve housing 1, a sealing ring 15 is embedded on one side of the surface of the compensation sleeve 11, and the sealing ring 15 is tightly attached to the inner wall of the valve housing 1. A spring seat 12 is inserted into one side of the compensation sleeve 11, and a compensation spring 13 is sleeved on the surface of the spring seat 12. The end of the compensation spring 13 away from the spring seat 12 is inserted into the interior of the compensation sleeve 11.

[0031] Specifically, the compensation component is set up, when the valve stem 2 is working, it will touch the compensation sleeve 11, and then drive the compensation sleeve 11 to move, at this time the compensation sleeve 11 will compress the compensation spring 13, and also move on the spring seat 12, and also slide in the inner cavity of the valve housing 1, and then after the valve stem 2 ends its movement, under the action of the compensation spring 13, the compensation sleeve 11 will reset, and then the compensation sleeve 11 will push the valve stem 2 back, thereby pushing the valve stem 2 back to the correct position, so as to achieve compensation for the working stroke of the valve stem 2. Specifically, in the original state, the spring 1 6 and the spring 2 7 push the valve stem 2 downward, and a part of the end of the valve stem 2 extends into the compensation sleeve 11, and pushes the compensation sleeve 11 to move a little distance on the spring seat 12, and compresses the compensation spring 13 at the same time. Since the thrust of the spring 1 6 and the spring 2 7 is greater than the thrust of the compensation spring 13, the compensation sleeve 11 will compress the compensation spring 13 when it moves, and this state is a non-working state.

[0032] A clamping ring 14 is disposed at the bottom of the spring seat 12 , and the surface of the clamping ring 14 is embedded in the inner wall of the valve housing 1 .

[0033] Specifically, the setting of the snap ring 14 is used to fix the spring seat 12 inside the valve housing 1. A groove adapted to the snap ring 14 is opened on the inner wall at the corresponding position of the inner cavity of the valve housing 1. Therefore, after the spring seat 12 is installed, the snap ring 14 is clamped in the corresponding groove, so that the spring seat 12 can be fixed inside the valve housing 1, and the installation work is completed.

[0034] The surface of the valve stem 2 is sleeved with two sealing rings 16 , and the two sealing rings 16 are tightly attached to the inner wall of the valve housing 1 .

[0035] Specifically, the sealing ring 16 is arranged such that two sealing rings 16 are arranged between the outer wall of the valve stem 2 and the inner wall of the valve housing 1, so that the gap between the valve stem 2 and the valve housing 1 can be sealed, thereby ensuring the sealing of the balancing valve and ensuring that the balancing valve can work normally.

[0036] The surface of the valve housing 1 is sleeved with a sealing ring 3 17 , a sealing ring 4 19 and a sealing ring 5 20 , and the sealing ring 3 17 , the sealing ring 4 19 and the sealing ring 5 20 are arranged in sequence from top to bottom.

[0037] Specifically, the sealing ring three 17, the sealing ring four 19 and the sealing ring five 20 are arranged so that the sealing ring three 17, the sealing ring four 19 and the sealing ring five 20 are sleeved on the surface of the valve housing 1. When the entire balancing valve is installed on the equipment, the sealing ring three 17, the sealing ring four 19 and the sealing ring five 20 will be tightly attached to the inner wall of the equipment, thereby ensuring the sealing of the balancing valve after installation, ensuring the normal operation of the equipment, and providing convenience for the user's work.

[0038] It should be noted that the functions to be implemented by each hardware in the utility model are supported by a large number of mature technologies and belong to the existing technology. The essence of the utility model is to optimize the combination of existing hardware and its connection method for specific application scenarios to meet the adaptation needs in specific application scenarios and solve the problems raised in the background technology (not involving improvements to the software inside the hardware).

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A balancing valve with high sensitivity, comprising a valve housing (1), characterized in that: The inner cavity of the valve housing (1) is plugged with a valve stem (2); the bottom of the surface of the valve housing (1) is provided with air inlet holes (3) distributed at equal intervals; the bottom of the inner cavity of the valve housing (1) is provided with a docking piece (4) parallel to the air inlet holes (3); the bottom end of the valve stem (2) extends into the inner cavity of the docking piece (4); the bottom of the surface of the valve stem (2) is provided with an air vent (5) located in the inner cavity of the docking piece (4); the bottom of the inner cavity of the valve housing (1) is plugged with a compensation component; The top end of the valve stem (2) is buckled with a spring 1 (6), the top end of the valve stem (2) is provided with a spring 2 (7) sleeved on the outside of the spring 1 (6), the inner sides of the spring 1 (6) and the spring 2 (7) are plugged with a top block (8), the top of the valve housing (1) is plugged with a valve cover (18) located above the valve stem (2), the valve cover (18) is sleeved on the outside of the spring 1 (6) and the spring 2 (7), and the top end of the top block (8) is plugged with an adjusting rod (9).

2. A highly sensitive balancing valve according to claim 1, characterized in that: The top end of the adjusting rod (9) penetrates through the top of the valve cover (18), and a fixing nut (10) is threadedly mounted on the surface of the adjusting rod (9), and the fixing nut (10) is fixedly connected to the top of the valve cover (18).

3. A highly sensitive balancing valve according to claim 2, characterized in that: The compensation assembly comprises a compensation sleeve (11) inserted into the bottom of the valve housing (1), a sealing ring (15) being embedded and sleeved on one side of the surface of the compensation sleeve (11), and the sealing ring (15) being tightly attached to the inner wall of the valve housing (1).

4. A highly sensitive balancing valve according to claim 3, characterized in that: A spring seat (12) is inserted into one side of the compensating sleeve (11), a compensating spring (13) is sleeved on the surface of the spring seat (12), and an end of the compensating spring (13) away from the spring seat (12) is inserted into the interior of the compensating sleeve (11).

5. A highly sensitive balancing valve according to claim 4, characterized in that: A clamping ring (14) is provided at the bottom of the spring seat (12), and the surface of the clamping ring (14) is embedded in the inner wall of the valve housing (1).

6. A highly sensitive balancing valve according to claim 5, characterized in that: Two sealing rings (16) are sleeved on the surface of the valve stem (2), and the two sealing rings (16) are tightly attached to the inner wall of the valve housing (1).

7. A highly sensitive balancing valve according to claim 6, characterized in that: The surface of the valve housing (1) is sleeved with a sealing ring three (17), a sealing ring four (19) and a sealing ring five (20), wherein the sealing ring three (17), the sealing ring four (19) and the sealing ring five (20) are arranged in sequence from top to bottom.

Images