Top guiding type regulating valve and using method thereof

Abstract

The invention discloses a top guide type regulating valve, which belongs to the technical field of regulating valves, and comprises a valve body, the valve body is provided with a feed port and a discharge port, the feed port and the discharge port are communicated with each other, the joint of the feed port and the discharge port is fixedly provided with a valve seat, a valve core is movably clamped in the valve seat, a valve rod is movably clamped on the valve core, and the valve rod is fixedly connected with the valve body. A valve cover is fixedly installed at the top of the valve body through a bolt, the valve rod penetrates through the valve cover and is in sliding connection with the valve cover, and a driving mechanism is fixedly installed at the top of the valve rod. The structure of the valve element and the valve rod is designed, the valve element is provided with two sealing structures for sealing the valve seat, compensation sealing can still be conducted when the valve seat is damaged and has defects, the service life of the regulating valve is prolonged, the sealing umbrella disc and the umbrella ribs on the valve rod block fine particles in media, particulate matter is prevented from damaging the valve rod and the guide sleeve, and the service life of the regulating valve is prolonged. The practicability of the device is improved, and long-acting and stable operation of the valve is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of regulating valves, and in particular to a top-guided regulating valve and a use method thereof. Background Art

[0002] A regulating valve refers to a control mechanism used to control and adjust medium parameters such as flow rate, flow, pressure, etc. in the process of industrial automation production. There are many types of regulating valves, which are generally classified in the form of valve cores. Different regulating valves are suitable for controlling different medium parameters. Choosing the right regulating valve can make the automated production process smoother.

[0003] A top-guided regulating valve has the characteristics of simple structure, reliable sealing, and excellent regulating performance. However, when a medium with a high flow rate needs to be regulated and the medium contains particulate matter and dust, the top-guided regulating valve is used. The particulate matter in the medium is easy to erode the sealing structure of the regulating valve, and smaller particles are easy to enter between the guide sleeve and the valve stem, causing the valve stem to be stuck, affecting the normal operation of the valve. Therefore, a top-guided regulating valve and a method for using the same are proposed. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a top-guided regulating valve, which is convenient for protecting the guided regulating valve and preventing fine particles in the medium from entering the valve stem and the guide sleeve and damaging the valve, thereby improving the practicability of the valve and ensuring the stable use of the valve.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a top-guided regulating valve, comprising a valve body, wherein the valve body is provided with a feed port and a discharge port, the feed port and the discharge port are connected to each other, a valve seat is fixedly installed at the connection between the feed port and the discharge port, a valve core is movably clamped in the valve seat, a valve stem is movably clamped on the valve core, a valve cover is fixedly installed on the top of the valve body by bolts, the valve stem is penetrated in the valve cover, the valve stem is slidably connected to the valve cover, and a driving mechanism is fixedly installed on the top of the valve stem.

[0006] Preferably, the valve core comprises an integrally formed main body and protective wings, the protective wings are located on the top of the main body, the main body is movably engaged with the valve seat, and the protective wings are interference fit with the valve seat.

[0007] Preferably, the valve stem comprises an upper rod body and a lower rod body, the upper rod body and the lower rod body are movably connected, the upper rod body is slidably connected to the valve cover, and the lower rod body is coaxially fixed to the valve core.

[0008] Preferably, a sealing umbrella plate is coaxially fixedly installed at the connection between the bottom of the upper rod body and the lower rod body, a plurality of umbrella ribs are hingedly fixed on the sealing umbrella plate, the umbrella ribs are hingedly fixed to the upper rod body, a sealing groove is provided at the bottom inner of the valve cover, a plurality of equidistantly distributed bone grooves are provided in the sealing groove, the sealing umbrella plate is movably engaged with the sealing groove, and the umbrella ribs are movably engaged with the bone grooves.

[0009] Preferably, a stuffing box is provided on the top of the valve cover, and a plurality of stuffings are filled in the stuffing box, and the stuffings abut against the surface of the valve stem. A gland is fixed on the top of the valve cover by bolts, and the bottom of the gland is located in the stuffing box, and the bottom of the gland abuts against the top of the stuffings.

[0010] Preferably, a connecting stud is provided at the bottom of the upper rod body, a connecting screw hole is opened at the top of the lower rod body, and the connecting stud is threadedly connected to the connecting screw hole.

[0011] The present invention also provides a top-guided regulating valve and a method for using the same, which uses the top-guided regulating valve and comprises the following steps:

[0012] S1. First, assemble the regulating valve as a whole, fix the feed port on the water inlet pipe, fix the discharge port on the water outlet pipe, energize the drive mechanism, and complete the installation of the regulating valve.

[0013] S2. When the valve is opened, the driving mechanism is started, and the driving mechanism drives the valve stem to rise. The valve stem drags the valve core upward, so that the protective wing is separated from the valve seat, and the sealing umbrella plate and umbrella ribs enter the sealing groove and rib groove. The valve stem continues to rise, driving the main body to separate from the valve seat, and the medium enters the discharge port from the feed port through the valve seat, and the sealing umbrella plate and umbrella ribs completely enter the sealing groove and rib groove.

[0014] S3. When closing the valve, start the driving mechanism again, the driving mechanism drives the valve stem to fall, the valve stem resets and pushes the valve core to fall, the main body is connected to the valve seat, the passage of the valve seat is blocked, the sealing umbrella plate and the umbrella ribs are slowly separated from the sealing groove and the rib groove, and when the wing enters the valve seat, the sealing umbrella plate and the umbrella ribs are completely separated from the sealing groove and the rib groove, completing the closure of the valve.

[0015] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0016] 1. The valve core of the valve is designed with a two-section structure of a main body and a protective wing. It contacts the valve seat to protect the valve seat. When the valve seat is damaged, the protective wing can cooperate with the valve seat to make up for the defects on the valve seat and ensure the normal sealing of the valve.

[0017] 2. The valve stem is designed with a sealing umbrella plate and an umbrella rib. When the valve stem contracts, the sealing umbrella plate and the umbrella rib contract in the sealing groove and the rib groove to block the fine particles in the medium. When opened, the umbrella rib pops open the sealing umbrella plate and bounces away the particles on the surface of the sealing umbrella plate, protecting the valve stem and ensuring the long-term stability of the valve, which is conducive to improving the practicality of the regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a top-guided regulating valve in the embodiment;

[0019] Figure 2 A schematic diagram of the valve stem and valve core structure of a top-guided regulating valve in an embodiment;

[0020] Figure 3 A top-guided regulating valve in the embodiment Figure 1 A schematic diagram of the structure shown;

[0021] Among them: 1. valve body; 2. feed inlet; 3. discharge port; 4. valve cover; 41. sealing groove; 411. bone groove; 42. stuffing box; 43. stuffing; 5. valve seat; 6. valve core; 61. main body; 62. wing; 7. valve stem; 71. upper rod body; 711. connecting stud; 72. lower rod body; 721. connecting screw hole; 73. sealing umbrella plate; 74. umbrella rib; 8. pressure cover. DETAILED DESCRIPTION

[0022] The following is attached to the instruction manual Figure 1-3 , the technical solution of the present invention is explained through specific embodiments.

[0023] Embodiment:

[0024] like Figure 1 As shown, the present invention provides a top-guided regulating valve and a method of using the same, comprising a valve body 1, a feed port 2 being provided on one side of the valve body 1, a discharge port 3 being provided on the other side of the valve body 1, the feed port 2 and the discharge port 3 being communicated with each other, a valve seat 5 being fixedly installed at the connection between the feed port 2 and the discharge port 3, a valve cover 4 being fixedly installed on the top of the valve body 1 by bolts, a valve core 6 being movably clamped on the valve seat 5, a valve stem 7 being coaxially fixedly installed on the top of the valve core 6, the valve stem 7 being penetrated in the valve cover 4, a pressure cover 8 being fixedly installed on the top of the valve cover 4 by bolts, the valve stem 7 being penetrated in the pressure cover 8, the top of the valve stem 7 being located on the outside of the valve body 1, the valve stem 7 being slidably connected to the valve cover 4 and the pressure cover 8, and a driving mechanism being fixedly installed on the top of the valve stem 7.

[0025] A sealing groove 41 is provided at the bottom of the valve cover 4, a stuffing box 42 is provided at the top of the valve cover 4, a plurality of evenly distributed stuffings 43 are provided in the stuffing box 42, the stuffings 43 abut against the surface of the valve stem 7, the bottom of the gland 8 is located at the top of the stuffing box 42, and the bottom of the gland 8 abuts against the top of the stuffing 43.

[0026] like Figure 2 As shown, the valve core 6 includes an integrally formed main body 61 and a wing 62. The wing 62 is located at the top of the main body 61. Figure 2 and Figure 1 ,from Figure 1 It can be seen from the figure that the main body 61 is movably engaged with the valve seat 5 , and the wing 62 is interference fit with the valve seat 5 .

[0027] The valve stem 7 includes an upper rod body 71 and a lower rod body 72. The upper rod body 71 is slidably connected to the valve cover 4 and the pressure cover 8, and the lower rod body 72 is coaxially fixed to the valve core 6. The upper rod body 71 and the lower rod body 72 are movably connected. A sealing umbrella plate 73 is coaxially fixedly installed at the connection between the bottom of the upper rod body 71 and the lower rod body 72. The top of the sealing umbrella plate 73 is hinged with a plurality of equidistantly distributed umbrella ribs 74, and the umbrella ribs 74 are hingedly fixed to the surface of the upper rod body 71.

[0028] A connecting stud 711 is provided at the bottom of the upper rod body 71 , and a connecting screw hole 721 is opened at the top of the lower rod body 72 . The connecting stud 711 is threadedly connected to the connecting screw hole 721 .

[0029] like Figure 3 As shown, a plurality of bone grooves 411 are opened in the sealing groove 41 , the sealing umbrella plate 73 is movably engaged with the sealing groove 41 , and the umbrella ribs 74 are movably engaged with the bone grooves 411 .

[0030] Valve assembly steps: First, install the valve seat 5 at the connection between the feed port 2 and the discharge port 3, fix the valve core 6 on the lower rod body 72, connect the upper rod body 71 and the lower rod body 72, clamp the valve core 6 at the position of the valve seat 5, and then put the valve cover 4 on the top of the valve stem 7, adjust the angle of the valve stem 7 so that the sealing umbrella plate 73 and the umbrella rib 74 can cooperate with the sealing groove 41 and the rib groove 411, fix the valve cover 4 and the valve body 1, and then fill the stuffing box 42 with stuffing 43, use the pressure cover 8 to press the stuffing 43, fix the pressure cover 8 and the valve cover 4, and then connect the drive mechanism to the top of the valve stem 7 to complete the assembly of the valve.

[0031] When maintaining the valve, the steps for replacing parts are opposite to the above assembly steps.

[0032] Directions:

[0033] S1. First, assemble the regulating valve as a whole, fix the feed port 2 on the water inlet pipe, fix the discharge port 3 on the water outlet pipe, energize the driving mechanism, and complete the installation of the regulating valve.

[0034] S2. When the valve is opened, the driving mechanism is started, and the driving mechanism drives the valve stem 7 to rise. The valve stem 7 drags the valve core 6 upward, so that the protective wing 62 is separated from the valve seat 5, and the sealing umbrella plate 73 and the umbrella rib 74 enter the sealing groove 41 and the rib groove 411. The valve stem 7 continues to rise, driving the main body 61 to separate from the valve seat 5, and the medium enters the discharge port 3 from the feed port 2 through the valve seat 5, and the sealing umbrella plate 73 and the umbrella rib 74 completely enter the sealing groove 41 and the rib groove 411.

[0035] S3. When closing the valve, the driving mechanism is started again, and the driving mechanism drives the valve stem 7 to fall. The valve stem 7 is reset to push the valve core 6 to fall, and the main body 61 is connected to the valve seat 5 to block the passage of the valve seat 5. The sealing umbrella plate 73 and the umbrella rib 74 are slowly separated from the sealing groove 41 and the rib groove 411. When the wing 62 enters the valve seat 5, the sealing umbrella plate 73 and the umbrella rib 74 are completely separated from the sealing groove 41 and the rib groove 411, and the valve is closed.

[0036] Working principle: the valve core 6 seals the valve seat 5. The valve core 6 is set as the main body 61 and the protective wing 62. The main body 61 has a sealing function. The larger protective wing 62 seals the valve seat 5 to prevent the valve seat 5 from being damaged by erosion due to long-term use, which affects the sealing performance of the valve. The protective wing 62 and the valve seat 5 have an interference fit to make up for the defects on the valve seat 5 damaged by erosion, ensure that the valve can be sealed normally, and improve the service life of the valve. Through the sealing umbrella plate 73 and umbrella rib 74 set on the valve stem 7, when the valve is opened, the sealing umbrella plate 73 enters the sealing groove 41 to block the medium in the inlet and outlet 3 to prevent the medium from flowing into the valve The friction between the stem 7 and the valve cover 4 and the pressure cover 8 causes jamming and damage to the valve stem 7. When the sealing umbrella disc 73 cooperates with the sealing groove 41, the umbrella rib 74 cooperates with the bone groove 411, and the cooperation gap is small. When the valve is closed, the umbrella rib 74 resets and bounces up, and the residual medium on the surface of the sealing umbrella disc 73 and the particles in the medium are bounced into the discharge port 3, which can be discharged when the valve is opened next time, which is convenient for protecting the valve. The stuffing box 42 and the stuffing 43 arranged on the top of the valve cover 4 once again seal the movable part of the valve stem 7 to prevent the medium from flowing out, ensure the pressure balance inside the valve, and the valve has extremely strong stability, which is conducive to improving the practicality of the regulating valve.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A top-guided regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a feed inlet (2) and a discharge port (3), the feed inlet (2) and the discharge port (3) are communicated with each other, a valve seat (5) is fixedly installed at the connection between the feed inlet (2) and the discharge port (3), a valve core (6) is movably clamped in the valve seat (5), a valve stem (7) is movably clamped on the valve core (6), a valve cover (4) is fixedly installed on the top of the valve body (1) by bolts, the valve stem (7) is inserted into the valve cover (4), the valve stem (7) is slidably connected to the valve cover (4), and a driving mechanism is fixedly installed on the top of the valve stem (7).

2. A top-guided regulating valve according to claim 1, characterized in that: The valve core (6) comprises an integrally formed main body (61) and a protective wing (62), wherein the protective wing (62) is located at the top of the main body (61), the main body (61) is movably engaged with the valve seat (5), and the protective wing (62) is interference fit with the valve seat (5).

3. A top-guided regulating valve according to claim 1, characterized in that: The valve stem (7) comprises an upper stem body (71) and a lower stem body (72); the upper stem body (71) and the lower stem body (72) are movably connected; the upper stem body (71) is slidably connected to the valve cover (4); and the lower stem body (72) is coaxially fixed to the valve core (6).

4. A top-guided regulating valve according to claim 3, characterized in that: A sealing umbrella plate (73) is coaxially fixedly installed at the connection between the bottom of the upper rod body (71) and the lower rod body (72); a plurality of umbrella ribs (74) are hingedly fixed on the sealing umbrella plate (73); the umbrella ribs (74) are hingedly fixed on the upper rod body (71); a sealing groove (41) is provided at the bottom of the valve cover (4); a plurality of equidistantly distributed bone grooves (411) are provided in the sealing groove (41); the sealing umbrella plate (73) is movably engaged with the sealing groove (41); and the umbrella ribs (74) are movably engaged with the bone grooves (411).

5. A top-guided regulating valve according to claim 1, characterized in that: A stuffing box (42) is provided on the top of the valve cover (4), and a plurality of stuffings (43) are filled in the stuffing box (42). The stuffings (43) abut against the surface of the valve stem (7). A pressure cover (8) is fixed on the top of the valve cover (4) by bolts. The bottom of the pressure cover (8) is located in the stuffing box (42), and the bottom of the pressure cover (8) abuts against the top of the stuffings (43).

6. A top-guided regulating valve according to claim 3, characterized in that: A connecting stud (711) is provided at the bottom of the upper rod body (71), and a connecting screw hole (721) is provided at the top of the lower rod body (72), and the connecting stud (711) is threadedly connected to the connecting screw hole (721).

7. A top-guided regulating valve and a method of using the same, using the top-guided regulating valve according to any one of claims 1 to 6, characterized in that: The steps include: S1. First, assemble the regulating valve as a whole, fix the feed port (2) on the water inlet pipe, fix the discharge port (3) on the water outlet pipe, energize the drive mechanism, and complete the installation of the regulating valve. S2. When the valve is opened, the driving mechanism is started, and the driving mechanism drives the valve stem (7) to rise. The valve stem (7) drags the valve core (6) upward, so that the protective wing (62) is separated from the valve seat (5), and the sealing umbrella plate (73) and the umbrella rib (74) enter the sealing groove (41) and the rib groove (411). The valve stem (7) continues to rise, driving the main body (61) to separate from the valve seat (5), and the medium enters the discharge port (3) from the feed port (2) through the valve seat (5), and the sealing umbrella plate (73) and the umbrella rib (74) completely enter the sealing groove (41) and the rib groove (411). S3. When the valve is closed, the driving mechanism is started again, and the driving mechanism drives the valve stem (7) to fall. The valve stem (7) is reset to push the valve core (6) to fall, and the main body (61) is connected with the valve seat (5), thereby blocking the passage of the valve seat (5). The sealing umbrella plate (73) and the umbrella rib (74) are slowly separated from the sealing groove (41) and the rib groove (411). When the wing (62) enters the valve seat (5), the sealing umbrella plate (73) and the umbrella rib (74) are completely separated from the sealing groove (41) and the rib groove (411), and the valve is closed.

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