Steam valve

Abstract

The utility model belongs to the technical field of pipeline accessories, and particularly relates to a steam valve which comprises a valve body, a valve rod and a valve rod. The valve seat is arranged in the valve chamber, and a valve hole is formed in the valve seat; the floating ball is arranged in the valve chamber and moves according to the displacement in the valve chamber to open and close the valve hole; the bracket is arranged in the valve chamber and is used for supporting the floating ball on the seat and the valve seat in a state of closing the valve hole; wherein the support comprises a base and two floating ball seats, the base is provided with an open hole and is in a frame shape, the two floating ball seats are arranged in the base, the floating ball is seated on the valve seat, and the floating ball is seated on the two floating ball seats in the state that the valve hole is closed. And the floating ball can stably open and close the valve hole, so that the working stability of the steam valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline accessories, and in particular relates to a steam valve. Background Art

[0002] A steam valve is a valve used in a steam pipeline, and its main purpose is to discharge moisture such as condensed water from the pipeline. For example, a free float type steam trap disclosed in patent application number CN200320127632.1 includes a valve body with a water inlet and a water outlet, a valve cover fixed above the valve body, a valve seat fixed on the valve body, and a float disposed in the valve body and the valve cover, wherein the center of the float is higher than the axis of the water inlet and the water outlet;

[0003] During the use of existing steam valves, the stability of the float is an important factor affecting the valve drainage effect. When the position accuracy of the valve seat is reduced, the stability of the float will be affected, resulting in a decrease in its stability, which in turn affects the normal operation of the steam valve. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a steam valve to improve the working stability of the steam valve in view of the above-mentioned technical problems.

[0005] In view of this, the utility model provides a steam valve, comprising:

[0006] a valve body, wherein a valve chamber is provided in the valve body;

[0007] A valve seat, wherein the valve seat is arranged in the valve chamber and a valve hole is arranged on the valve seat;

[0008] Also includes:

[0009] A float, which is disposed in the valve chamber and moves according to the amount of water discharged in the valve chamber to open and close the valve hole;

[0010] A bracket, which is arranged in the valve chamber and supports the float ball in a state where it is seated on the valve seat and closes the valve hole;

[0011] The bracket comprises a base with an opening and a frame shape and two float seats arranged in the base. The float seats on the two float seats when the float seats on the valve seat and closes the valve hole.

[0012] In the present technical solution, during the use of the steam valve, the setting of the bracket can form a three-point support for the float through the cooperation of the two float seats and the valve seat, thereby effectively improving the working stability of the float, ensuring that the float can stably open and close the valve hole, and thus improving the working stability of the steam valve.

[0013] In the above technical solution, further, the valve body also includes:

[0014] a first valve body and a second valve body, wherein the first valve body and the second valve body define a valve chamber;

[0015] Wherein, the valve seat is arranged in the second valve body, and the base is arranged in the second valve body in a cantilever manner.

[0016] In the above technical solution, further, the first valve body is provided with an opening, the valve chamber is open to the side and the second valve body is connected to the first valve body to close the opening.

[0017] In the above technical solution, further, the valve body has a top wall, a bottom wall and a peripheral wall connecting the top wall and the bottom wall, the top wall, the bottom wall and the peripheral wall define a valve chamber, the first valve body includes the top wall, the bottom wall and the peripheral wall, the second valve body includes the remaining part of the peripheral wall, the part of the peripheral wall included in the first valve body includes an opening, the base is opposite to the bottom wall and a gap is formed between the base and the bottom wall.

[0018] In the above technical solution, further, it also includes:

[0019] A sealing strip is arranged on the contact surface between the first valve body and the second valve body, and an air-filled cavity is arranged inside the sealing strip.

[0020] The beneficial effects of the utility model are:

[0021] 1. The setting of the bracket can form a three-point support for the float through the cooperation of two float seats and the valve seat, thereby effectively improving the working stability of the float and ensuring that the float can stably open and close the valve hole, thereby improving the working stability of the steam valve;

[0022] 2. The setting of two float seats effectively improves the direct structural strength;

[0023] 3. The sealing performance of the valve body is effectively improved by setting the sealing strip and the air-filled cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 It is a schematic structural diagram of a specific implementation method of the utility model.

[0026] Figure 2This is a schematic diagram of the support structure of the utility model.

[0027] Figure 3 It is a cross-sectional view of the valve hole of the utility model in a closed state.

[0028] Figure 4 It is a cross-sectional view of the valve hole of the utility model in the open state.

[0029] Figure 5 This is a schematic diagram of the sealing strip structure of the utility model.

[0030] The symbols in the figure are:

[0031] 1. Valve body; 100. First valve body; 101. Second valve body; 2. Valve chamber; 3. Valve seat; 4. Valve hole; 5. Float; 6. Bracket; 60. Base; 61. Float seat; 7. Opening; 8. Top wall; 9. Bottom wall; 10. Peripheral wall; 11. Sealing strip; 12. Inflatable cavity; 13. Filter; 14. Bimetallic strip; 15. Inlet; 16. Outflow channel; 17. Outlet; 18. Arm; 19. Plate. DETAILED DESCRIPTION

[0032] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0033] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] Embodiment 1:

[0035] The embodiment of the present application provides a steam valve, comprising: a valve body 1, wherein a valve chamber 2 is disposed in the valve body 1; a valve seat 3, wherein the valve seat 3 is disposed in the valve chamber 2, and wherein a valve hole 4 is disposed on the valve seat 3;

[0036] The valve body also includes: a float 5, which is arranged in the valve chamber 2 and moves according to the amount of water discharged in the valve chamber 2 to open and close the valve hole 4; a bracket 6, which is arranged in the valve chamber 2 and supports the float 5 to sit on the valve seat 3 and close the valve hole 4;

[0037] The bracket 6 includes a base 60 having an opening and a frame shape and two floats 5 seats arranged in the base 60 . The float 5 sits on the two floats 5 seats when it sits on the valve seat 3 and closes the valve hole 4 .

[0038] The valve body 1 further comprises: a first valve body 100 and a second valve body 101 , wherein the first valve body 100 and the second valve body 101 define a valve chamber 2 ;

[0039] The valve seat 3 is disposed in the second valve body 101 , and the base 60 is disposed on the second valve body 101 in the form of a cantilever 18 .

[0040] The first valve body 100 is provided with an opening 7 , the valve chamber 2 is open to the side, and the second valve body 101 is connected to the first valve body 100 to close the opening 7 .

[0041] The valve body 1 has a top wall 8, a bottom wall 9 and a peripheral wall 10 connecting the top wall 8 and the bottom wall 9, the top wall 8, the bottom wall 9 and the peripheral wall 10 define a valve chamber 2, the first valve body 100 includes the top wall 8, the bottom wall 9 and the peripheral wall 10, the second valve body 101 includes the remaining part of the peripheral wall 10, the part of the peripheral wall 10 included in the first valve body 100 includes the opening 7, the base 60 is opposite to the bottom wall 9 and a gap is formed between the base 60 and the bottom wall 9.

[0042] Moreover, the first valve body 100 and the second valve body 101 are fastened by bolts and define a closed space, the portion of the peripheral wall 10 included in the first valve body 100 includes an opening 7, the opening 7 is opened to the side 7, the first valve body 100 has an inlet 15, the fluid flows into the valve chamber 2 from the outside of the valve body 1 through the inlet 15, the inlet 15 penetrates the top wall 8 in the up and down direction, the second valve body 101 and the bottom wall 9 of the first valve body 100 have an outflow channel 16 and an outlet 17, the fluid flows from the valve chamber 2 to the outside of the valve body 1 through the outflow channel 16 and the outlet 17, that is, the outflow channel 16 flows from the second valve body 101 is continuous to the bottom wall 9, the upstream end of the outflow channel 16 is located in the second valve body 101 and opens 7 at the lower part of the valve chamber 2, the downstream end of the outflow channel 16 is the outlet 17, the outlet 17 opens 7 downward in the bottom wall 9, the axis of the inlet 15 and the axis of the outlet 17 extend substantially coaxially in the up-down direction, in the valve body 1, a fluid channel is defined by the inlet 15, the valve chamber 2, the outflow channel 16 and the outlet 17, the valve seat 3 is arranged in the second valve body 101, the valve seat 3 is arranged at the upstream end of the outflow channel 16 in the valve chamber 2, and the valve seat 3 is threadedly connected to the upstream end of the outflow channel 16;

[0043] The float 5 is in the shape of a hollow ball, one end of the base 60 is connected to the second valve body 101, and the other end of the base 60 is a free end. Specifically, the base 60 extends from the portion of the second valve body 101 located below the valve seat 3 into the valve chamber 2. More specifically, the base 60 and the second valve body 101 are made of a single component. For example, the second valve body 101 and the base 60 are integrally formed by casting. The base 60 is opposite to the bottom wall 9, and there is a gap between the base 60 and the bottom wall 9. The base 60 is arranged below the float 5 in the valve chamber 2, two float 5 seats are arranged at the top of the base 60, and two float 5 seats are arranged on the surface of the base 60 facing the float 5. The valve seat 3 and the two float 5 seats are arranged in a triangle to achieve three-point support for the float 5.

[0044] In this embodiment, when the steam valve is in use, the setting of the bracket 6 can form a three-point support for the float 5 through the cooperation of the two floats 5 and the valve seat 3, thereby effectively improving the working stability of the float 5, ensuring that the float 5 can stably open and close the valve hole 4, and thus improving the working stability of the steam valve.

[0045] Embodiment 2:

[0046] This embodiment provides a steam valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and further includes a filter screen 1313, which is disposed in the first valve body 100 and is located near the inlet 15 in the valve chamber 2. The filter screen 1313 is a mesh component, so that the fluid can pass through the filter screen 1313;

[0047] It also includes a bimetallic strip 14, which is disposed in the second valve body 101. One end of the bimetallic strip 14 is fixed to the second valve body 101, and the other end of the bimetallic strip 14 is a free end. The bimetallic strip 14 is arc-shaped as a whole. The bimetallic strip 14 deforms according to its own temperature. When the bimetallic strip 14 is at a low temperature, the free end of the bimetallic strip 14 is located close to the valve seat 3 and slightly away from the valve seat 3. The free end of the bimetallic strip 14 separates the float 5 from the valve seat 3 at this position. When the bimetallic strip 14 is at a high temperature, the free end of the bimetallic strip 14 is close to the valve seat 3. The free end of the bimetallic strip 14 at this position will not prevent the float 5 from sitting on the valve seat 3;

[0048] Further, the base 60 of the bracket 6 is generally fan-shaped and is bent to be recessed toward the bottom wall 9. Specifically, the base 60 includes two arms 18 extending from the second valve body 101 and a plate 19 connecting the two arms 18 to each other, the float 5 seat is arranged at the end of the arm 18, the two arms 18, i.e., the two float 5 seats, are spaced apart from each other in the circumferential direction around the axis of the valve hole 4, each arm 18 extends from the second valve body 101 into the valve chamber 2, i.e., each arm 18 is connected to the second valve body 101 at one end in the extending direction thereof, and the other end of each arm 18 in the extending direction is a free end on the inner side of the valve chamber 2, each arm 18 is bent to be recessed toward the bottom wall 9, each arm 18 is thicker than the plate 19, the float 5 seat is arranged on the surface of the front end of the arm 18 opposite to the float 5, and the arm 18 and the plate 19 are bent so as not to contact the float 5 located on the valve seat 3 and the two float 5 seats.

[0049] In this embodiment, steam and water in the steam pipeline flow into the steam valve. At this time, the bimetallic strip 14 is in a low-temperature state, and the free end of the bimetallic strip 14 is away from the valve seat 3. The bimetallic strip 14 prevents the float 5 from sitting on the valve seat 3. The valve hole 4 is forced to open at this time. In this state, when air or low-temperature drainage in the pipeline flows into the valve chamber 2, the initial air or low-temperature drainage flows out of the valve chamber 2 and the outflow channel 16 through the valve hole 4. In this way, the initial air or low-temperature drainage flowing into the valve body 1 is quickly discharged from the valve body 1. The fluid such as the initial air or low-temperature drainage flowing out of the inlet 15 first passes through the filter screen 13. At this time, the fluid passing through the filter screen The net 13 removes foreign matter from the fluid, and then, steam or high-temperature drainage flows into the valve body 1, and the drainage is stored in the lower part of the valve chamber 2, while the steam is retained in the upper part of the valve chamber 2. When the float 5 is in the open state, the drainage flows out of the valve chamber 2 through the valve hole 4. Thereafter, when the temperature of the bimetallic strip 14 rises, the bimetallic strip 14 is deformed, and the free end of the bimetallic strip 14 moves to a position that does not hinder the float 5 from sitting on the valve seat 3. Therefore, the float 5 can sit on the valve seat 3 and can close the valve hole 4. If the discharge volume in the valve chamber 2 is not large, the float 5 sits on the valve seat 3 and closes the valve hole 4. At this time, the float 5 also sits on the two The float 5 is supported by the valve seat 3 and the two float 5 seats at three points. When the drainage in the valve chamber 2 increases, the float 5 floats due to the drainage. Therefore, the float 5 rises and is released from the valve seat 3, thereby opening the valve hole 4. The drainage flows out of the valve chamber 2 through the valve hole 4 to the outflow channel 16. The drainage flowing out of the valve hole 4 passes through the outflow channel 16 and flows out of the valve body 1 through the outlet 17. At this time, since the steam in the valve chamber 2 remains in the space above the valve chamber 2, the steam will not flow out of the valve body 1 through the valve hole 4. When the drainage in the valve chamber 2 decreases, the float 5 drops as the drainage decreases and sits on the valve seat. 3 and closes the valve hole 4, thereby, the outflow of drainage from the valve body 1 stops. At this time, the float 5 also sits on the float 5 seat and the valve seat 3. When the valve hole 4 is closed, the float 5 is supported at three points by the valve seat 3 and the two float 5 seats. In this state, even when steam flows into the valve chamber 2, since the valve hole 4 is immersed in the drainage and the valve hole 4 is closed by the float 5, the steam will not flow out of the valve body 1 through the valve hole 4. When the drainage in the valve chamber 2 increases, the float 5 rises again due to the drainage, and the float 5 is released from the valve seat 3 and the valve hole 4 is opened. Compared with the prior art, the utility model effectively improves the working stability of the steam valve.

[0050] Embodiment 3:

[0051] This embodiment provides a steam valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and also includes: a sealing strip 11, which is arranged on the contact surface of the first valve body 100 and the second valve body 101, and an air-filled cavity 12 is arranged in the sealing strip 11.

[0052] In this embodiment, the sealing strip 11 can ensure the sealing between the first valve body 100 and the second valve body 101. At the same time, the air-filled cavity 12 on the sealing strip 11 is connected to the first valve body 100 and the second valve body 101. The air-filled cavity 12 is squeezed and deformed and tightly abuts against the contact surface of the first valve body 100 and the second valve body 101, thereby improving the sealing effect between the first valve body 100 and the second valve body 101, thereby effectively improving the sealing performance of the valve body 1.

[0053] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A steam valve, comprising: A valve body (1), wherein a valve chamber (2) is provided in the valve body (1); A valve seat (3), the valve seat (3) being arranged in the valve chamber (2), and the valve seat (3) being provided with a valve hole (4); It is characterized by further comprising: A float (5) is disposed in the valve chamber (2) and moves according to the amount of water discharged in the valve chamber (2) to open and close the valve hole (4); A bracket (6), the bracket (6) being arranged in the valve chamber (2) and supporting the float (5) in a state where it is seated on the valve seat (3) and closes the valve hole (4); The bracket (6) includes a base (60) having an opening and a frame shape and two float (5) seats arranged in the base (60), and the float (5) sits on the two float (5) seats when it sits on the valve seat (3) and closes the valve hole (4).

2. A steam valve according to claim 1, characterized in that: The valve body (1) further comprises: A first valve body (100) and a second valve body (101), wherein the first valve body (100) and the second valve body (101) define a valve chamber (2); The valve seat (3) is arranged in the second valve body (101), and the base (60) is arranged on the second valve body (101) in the form of a cantilever (18).

3. A steam valve according to claim 2, characterized in that: The first valve body (100) is provided with an opening (7), the valve chamber (2) is open to the side, and the second valve body (101) is connected to the first valve body (100) to close the opening (7).

4. A steam valve according to claim 3, characterized in that: The valve body (1) comprises a top wall (8), a bottom wall (9) and a peripheral wall (10) connecting the top wall (8) and the bottom wall (9); the top wall (8), the bottom wall (9) and the peripheral wall (10) define a valve chamber (2); the first valve body (100) comprises the top wall (8), the bottom wall (9) and the peripheral wall (10); the second valve body (101) comprises the remaining portion of the peripheral wall (10); the portion of the peripheral wall (10) included in the first valve body (100) comprises an opening (7); the base (60) is opposite to the bottom wall (9) and a gap is formed between the base (60) and the bottom wall (9).

5. A steam valve according to claim 2, characterized in that: Also includes: A sealing strip (11), wherein the sealing strip (11) is arranged on a contact surface between the first valve body (100) and the second valve body (101), and an air-filled cavity (12) is arranged inside the sealing strip (11).

Images