Feed water recirculation high-precision regulating valve

Abstract

The utility model discloses a feed water recirculation high-precision regulating valve, which relates to the technical field of regulating valves, and comprises a main valve body, and the output end of the main valve body is fixedly connected with a connecting mechanism; the connecting mechanism comprises a fixing ring, the fixing ring is fixedly connected to the output end of the main valve body, multiple sets of sliding grooves are formed in the side wall of the fixing ring, the inner wall of each set of sliding groove is slidably connected with a set of sleeve pipe, and the inner wall of each set of sleeve pipe is slidably sleeved with a set of fixing pin. The inner wall of each set of fixing pins is rotationally connected with two sets of rotating blocks, and torsional springs are arranged at the positions, connected with the fixing pins, of the rotating blocks. The fixing pin is inserted into the bolt hole of the flange plate on the pipeline, then the rotating ring is pushed to rotate, the protruding block pushes and extrudes the fixing pin, the rotating block tightly abuts against the flange plate, the main valve body and the pipeline can be tightly connected, the main valve body can be installed and disassembled more rapidly and conveniently, and the assembly and disassembly efficiency of the main valve body is improved. The working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a high-precision regulating valve for water supply recirculation. Background Art

[0002] The feed water regulating valve is mainly used in the boiler feed water system. According to its specific application scenario, it can be divided into the main feed water regulating valve, the main feed water bypass regulating valve and the water spray cooling regulating valve. Its main function is to accurately adjust the feed water flow rate to meet the boiler's requirements for feed water volume when working under different working conditions. The structure of the existing feed water recirculation regulating valve includes a valve body, a valve cage, a valve core and a pneumatic actuator. The valve cage is installed in the valve body, the valve core is installed in the valve cage and cooperates with the valve seat on the valve body, the top of the valve core is connected to the piston rod of the hydraulic press, and a throttling hole is opened on the cylindrical surface of the valve cage. When working, the hydraulic press drives the valve core to move upward, and high-temperature and high-pressure steam enters the valve cage from the bottom of the valve body, and then flows out from the outlet after throttling through the throttling hole.

[0003] The existing patent (publication number: CN220540334U) discloses a fluid diversion hedging valve cage and a water supply recirculation regulating valve, wherein the fluid diversion hedging valve cage includes a valve cage body, an annular cavity is arranged between the inner wall and the outer wall of the valve cage body; one or more throttling sleeves, the throttling sleeves are coaxially fixed in the annular cavity, and there are gaps between the throttling sleeves and between the throttling sleeves and the inner and outer walls of the valve cage body; a plurality of throttling holes are opened on the inner and outer walls of the valve cage body and the throttling sleeve, which can effectively reduce the pressure of the fluid through the fluid diversion hedging valve cage, and greatly reduce the erosion effect of the fluid on the valve sealing surface, prevent the inaccurate valve flow regulation caused by the erosion of the valve sealing surface or the reflux of water leakage in the valve to increase the energy consumption of the unit, and improve the stability and economy of the valve operation.

[0004] However, the above technical solution still has certain defects. During use, the above technical solution needs to connect the regulating valve and the pipeline together through multiple sets of bolts. However, after a period of use, the regulating valve needs to be maintained. At this time, multiple sets of bolts need to be turned to remove the regulating valve, which makes the installation and disassembly of the regulating valve very inconvenient, affecting the efficiency of the regulating valve and maintenance. For this reason, a high-precision regulating valve for water recirculation is proposed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a high-precision regulating valve for water supply recirculation to solve the technical problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision regulating valve for water recirculation, comprising a main valve body, wherein the output end of the main valve body is fixedly connected with a connecting mechanism;

[0007] The connecting mechanism includes a fixed ring, which is fixedly connected to the output end of the main valve body. The side wall of the fixed ring is provided with multiple groups of sliding grooves. The inner walls of each group of the sliding grooves are slidably connected with a group of sleeves. The inner walls of each group of the sleeves are slidably sleeved with a group of fixing pins. The inner walls of each group of the fixing pins are rotatably connected with two groups of rotating blocks. The rotating blocks are provided with torsion springs at the connection with the fixing pins. The outer walls of the multiple groups of fixing pins are slidably sleeved with rotating rings. The side walls of the rotating rings are fixedly connected with multiple groups of protrusions.

[0008] As an optimal technical solution for a high-precision regulating valve for water recirculation of the utility model, the top of the main valve body is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a gear set, and the output end of the gear set is connected to the main valve body.

[0009] As a preferred technical solution of a high-precision regulating valve for water recirculation of the utility model, the input end of the main valve body is connected to a filter mechanism, and the end of the filter mechanism is fixedly connected to another set of connecting mechanisms.

[0010] As an optimal technical solution for a high-precision regulating valve for water recirculation of the utility model, the filtering mechanism includes a connecting pipe, another group of the connecting mechanisms is fixedly connected to the end of the connecting pipe, the connecting pipe is connected to the input end of the main valve body, and the inner wall sliding sleeve of the connecting pipe is provided with a filter net.

[0011] As an optimal technical solution for a high-precision regulating valve for water recirculation of the utility model, the inner wall of the connecting pipe is slidably connected with two groups of plugs, the ends of the plugs extend to the filter screen, and the filter screen is provided with grooves at the contact positions with the plugs.

[0012] As a preferred technical solution of the high-precision regulating valve for water recirculation of the utility model, a return spring is fixedly connected to the end of the top head, and the end of the return spring is fixedly connected to the side wall of the connecting pipe.

[0013] As an optimal technical solution for a high-precision regulating valve for water recirculation of the utility model, the inner wall of the connecting pipe is rotatably connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a scraper, the scraper is attached to the side wall of the filter screen, and the other end of the rotating shaft is fixedly connected to an impeller.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] 1. The utility model inserts the fixing pin into the bolt hole of the flange on the pipeline, and then pushes the rotating ring to rotate, so that the convex block pushes the fixing pin, so that the rotating block is tightly against the flange, so that the main valve body and the pipeline can be tightly connected, so that the installation and removal of the main valve body can be faster and more convenient, and the work efficiency is improved;

[0016] 2. The utility model filters the fluid through the filter screen, and the impeller carried by the fluid rotates, causing the scraper to rotate, thereby reducing the problem of impurities attached to the filter screen clogging the filter screen, so that the fluid can be effectively filtered after passing through the filter screen, reducing impurities in the fluid and extending the service life of the main valve body. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the main structure of the connecting mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the connection structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-section structure of the filtering mechanism of the present utility model.

[0021] In the figure: 1. Main valve body; 2. Servo motor; 3. Gear set; 4. Connecting mechanism; 5. Filter mechanism;

[0022] 401, fixed ring; 402, slide groove; 403, sleeve; 404, fixed pin; 405, rotating block; 406, rotating ring; 407, protrusion;

[0023] 501, connecting pipe; 502, filter screen; 503, top head; 504, return spring; 505, rotating shaft; 506, scraper; 507, impeller. 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0025] The following describes an embodiment of the utility model based on its overall structure.

[0026] A high-precision regulating valve for water recirculation, such as Figures 1 to 4 As shown, it comprises a main valve body 1, and the output end of the main valve body 1 is fixedly connected with a connecting mechanism 4;

[0027] The connecting mechanism 4 includes a fixed ring 401, which is fixedly connected to the output end of the main valve body 1. The side wall of the fixed ring 401 is provided with multiple groups of sliding grooves 402. The inner wall of each group of sliding grooves 402 is slidably connected with a group of sleeves 403. The inner wall of each group of sleeves 403 is slidably sleeved with a group of fixing pins 404. The inner wall of each group of fixing pins 404 is rotatably connected with two groups of rotating blocks 405. The rotating blocks 405 are provided with torsion springs at the connection with the fixing pins 404. The outer walls of the multiple groups of fixing pins 404 are slidably sleeved with rotating rings 406. The side walls of the rotating rings 406 are fixedly connected with multiple groups of protrusions 407. The top of the main valve body 1 is fixedly connected with a servo motor 2. The output end of the servo motor 2 is fixedly connected with a gear group 3. The output end of the gear group 3 is connected to the main valve body 1.

[0028] By inserting multiple sets of fixing pins 404 into the bolt holes on the flange plate above the pipeline, during this process, the rotating block 405 contacts the bolt holes, causing the rotating block 405 to rotate and twist the torsion spring. After the fixing pin 404 passes through the bolt hole, the torsion spring rebounds and pushes the rotating block 405 to reset. When the rotating block 405 rotates in the opposite direction, the rotating block 405 is blocked by the inner wall of the fixing pin 404 and cannot rotate. Then, the main valve body 1 is held and pushed to rotate the rotating ring 406, so that the rotating ring 406 drives the protrusion 407 to rotate, and the protrusion 407 During the rotation, the fixing pin 404 is contacted, so that the fixing pin 404 is pushed, thereby making the fixing pin 404 slide inside the sleeve 403, so that the rotating block 405 is tightly against the side wall of the flange, so that the fixing ring 401 and the flange are tightly fitted together. When the main valve body 1 needs to be disassembled, the rotating ring 406 is reset by pushing it in the reverse direction, and then the rotating block 405 is pushed to flip over, so that the rotating block 405 flips over into the fixing pin 404, and then the fixing pin 404 slides out from the bolt hole.

[0029] Please refer to Figure 1 and Figure 4 The input end of the main valve body 1 is connected with a filter mechanism 5, and the end of the filter mechanism 5 is fixedly connected with another group of connecting mechanisms 4. The filter mechanism 5 includes a connecting pipe 501, and the other group of connecting mechanisms 4 is fixedly connected to the end of the connecting pipe 501. The connecting pipe 501 is connected to the input end of the main valve body 1. The inner wall of the connecting pipe 501 is slidingly sleeved with a filter screen 502. The inner wall of the connecting pipe 501 is slidingly connected with two groups of plugs 503. The ends of the plugs 503 extend to the filter screen 502. The filter screen 502 is provided with a groove at the contact position with the plugs 503. The end of the plug 503 is fixedly connected with a return spring 504. The end of the return spring 504 is fixedly connected to the side wall of the connecting pipe 501. The inner wall of the connecting pipe 501 is rotatably connected with a rotating shaft 505. One end of the rotating shaft 505 is fixedly connected with a scraper 506. The scraper 506 is attached to the side wall of the filter screen 502. The other end of the rotating shaft 505 is fixedly connected with an impeller 507.

[0030] By pushing the filter screen 502 to slide into the connecting tube 501, when the filter screen 502 slides into the connecting tube 501, the top head 503 is pushed, so that the return spring 504 is compressed. After the groove is aligned with the top head 503, the return spring 504 rebounds and pushes the top head 503 to slide into the groove, so that when the filter screen 502 slides out of the connecting tube 501, it is necessary to overcome the friction between the top head 503 and the groove and the elastic force of the return spring 504, so that the filter screen 502 cannot slide out of the connecting tube 501 without human pulling, and the impeller 507 is driven to rotate during the process of fluid flowing through the connecting tube 501. The impeller 507 drives the rotating shaft 505 to rotate during the rotation process, and the rotating shaft 505 drives the scraper 506 to rotate, so that the scraper 506 is attached to the surface of the filter screen 502 and rotates to scrape the filter screen 502.

[0031] When in use, by inserting the fixing pin 404 into the bolt hole of the flange on the pipeline, and then pushing the rotating ring 406 to rotate, the protrusion 407 pushes the fixing pin 404, so that the rotating block 405 is tightly against the flange, so that the main valve body 1 and the pipeline can be tightly connected, so that the installation and removal of the main valve body 1 can be faster and more convenient, and the work efficiency is improved. The parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0032] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A high-precision regulating valve for water recirculation, comprising a main valve body (1), characterized in that: The output end of the main valve body (1) is fixedly connected with a connecting mechanism (4); The connecting mechanism (4) comprises a fixing ring (401), wherein the fixing ring (401) is fixedly connected to the output end of the main valve body (1), and the side wall of the fixing ring (401) is provided with a plurality of groups of sliding grooves (402), and the inner wall of each group of the sliding grooves (402) is slidably connected to a group of sleeves (403), and the inner wall of each group of the sleeves (403) is slidably sleeved with a group of fixing pins (404), and the inner wall of each group of the fixing pins (404) is rotatably connected to two groups of rotating blocks (405), and the rotating blocks (405) are provided with torsion springs at the connection with the fixing pins (404), and the outer walls of the plurality of groups of the fixing pins (404) are slidably sleeved with rotating rings (406), and the side walls of the rotating rings (406) are fixedly connected to a plurality of groups of protrusions (407).

2. A high-precision regulating valve for water recirculation according to claim 1, characterized in that: The top end of the main valve body (1) is fixedly connected to a servo motor (2), the output end of the servo motor (2) is fixedly connected to a gear set (3), and the output end of the gear set (3) is connected to the main valve body (1).

3. A high-precision regulating valve for water recirculation according to claim 1, characterized in that: The input end of the main valve body (1) is connected to a filtering mechanism (5), and the end of the filtering mechanism (5) is fixedly connected to another set of connecting mechanisms (4).

4. A high-precision regulating valve for water recirculation according to claim 3, characterized in that: The filtering mechanism (5) comprises a connecting pipe (501), another group of the connecting mechanisms (4) is fixedly connected to the end of the connecting pipe (501), the connecting pipe (501) is connected to the input end of the main valve body (1), and the inner wall of the connecting pipe (501) is slidingly sleeved with a filtering net (502).

5. A high-precision regulating valve for water recirculation according to claim 4, characterized in that: Two groups of plugs (503) are slidably connected to the inner wall of the connecting pipe (501), the ends of the plugs (503) extend to the filter screen (502), and the filter screen (502) is provided with a groove at the contact position with the plugs (503).

6. A high-precision regulating valve for water recirculation according to claim 5, characterized in that: The end of the top head (503) is fixedly connected to a return spring (504), and the end of the return spring (504) is fixedly connected to the side wall of the connecting pipe (501).

7. A high-precision regulating valve for water recirculation according to claim 4, characterized in that: The inner wall of the connecting pipe (501) is rotatably connected to a rotating shaft (505), one end of the rotating shaft (505) is fixedly connected to a scraper (506), the scraper (506) is attached to the side wall of the filter screen (502), and the other end of the rotating shaft (505) is fixedly connected to an impeller (507).

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