Constant-temperature drain valve

Abstract

The utility model belongs to the technical field of drain valves, and particularly relates to a constant-temperature drain valve which comprises a valve seat, a liquid inlet runner and a liquid outlet runner are arranged in the valve seat, the liquid inlet runner and the liquid outlet runner are communicated through a plugging opening, a thermal expansive force valve element is arranged in the liquid outlet runner, the thermal expansive force valve element is suitable for blocking the plugging opening after being heated, and the thermal expansive force valve element is suitable for blocking the plugging opening after being heated. A first filter cartridge is arranged in the liquid inlet flow channel; the top of the first filter cartridge abuts against the plugging opening, and the bottom of the first filter cartridge abuts against the bottom wall of the liquid outlet flow channel, so that a medium in the liquid inlet flow channel penetrates through filter holes of the first filter cartridge and then enters the liquid outlet flow channel; in short, the top of the first filter cartridge abuts against the plugging opening, and the bottom of the first filter cartridge abuts against the bottom wall of the liquid outlet flow channel, so that a medium in the liquid inlet flow channel penetrates through the filter holes of the first filter cartridge and then enters the liquid outlet flow channel, a filtering effect on the medium is achieved, impurities in the medium are prevented from being accumulated at the plugging opening, and good plugging of the plugging opening is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam traps, and in particular relates to a thermostatic steam trap. Background Art

[0002] The thermostatic steam trap uses a thermal expansion valve core to control the opening and closing of the sealing port. When condensate accumulates in the pipeline, the temperature drops, and the thermal expansion valve core contracts to open the sealing port and discharge the condensate. When steam enters the valve, the temperature rises, and the thermal expansion valve core expands to close the sealing port. However, when the existing thermostatic steam trap is in use, there are usually impurities in the condensate. The impurities accumulate at the sealing port, which may cause the thermal tension valve core to fail to block the sealing port, causing the thermostatic steam trap to malfunction.

[0003] Therefore, how to prevent the thermal tension valve core from being unable to block the sealing port is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] The utility model aims to provide a constant temperature steam trap.

[0005] In order to solve the above technical problems, the utility model provides a constant temperature steam trap, including: a valve seat, in which an inlet flow channel and an outlet flow channel are arranged, the inlet flow channel and the outlet flow channel are connected through a plugging port, a thermal expansion valve core is arranged in the outlet flow channel, the thermal expansion valve core is suitable for plugging the plugging port after being heated, a first filter cartridge is arranged in the inlet flow channel, and; the top of the first filter cartridge abuts the plugging port, and the bottom of the first filter cartridge abuts the bottom wall of the outlet flow channel, so that the medium in the inlet flow channel passes through the filter holes of the first filter cartridge and enters the outlet flow channel.

[0006] Preferably, a drain nut is threadedly connected to the bottom of the valve seat, a drain countersunk hole is provided on the top of the drain nut, and the bottom of the first filter cartridge is inserted into the drain countersunk hole.

[0007] Preferably, an adjustment block is rotatably provided on the drain nut, a second filter cartridge is integrally provided on the top of the adjustment block, and the second filter cartridge is inserted into the first filter cartridge.

[0008] Preferably, a mounting hole is provided on the drain nut, and a mounting step is provided in the mounting hole, the adjustment block is inserted into the mounting hole, and an adjustment ring is provided on the side wall of the adjustment block, and the bottom of the adjustment ring abuts against the mounting step.

[0009] Preferably, the side walls of the adjusting block and the adjusting ring are provided with a plurality of sealing grooves, and the sealing grooves are suitable for clamping sealing rings.

[0010] Preferably, the sealing port is threadedly connected to a sealing ring, a sealing countersunk hole is provided at the bottom of the sealing ring, and the top of the first filter cartridge abuts against the sealing countersunk hole.

[0011] Preferably, an adjusting bolt is disposed on the top of the valve seat, an adjusting pin is threadedly connected to the adjusting bolt, and the thermal expansion valve core is disposed at the bottom of the adjusting pin.

[0012] Preferably, the top cover of the adjusting bolt is provided with a protective shell to protect the adjusting pin.

[0013] Preferably, a support spring is installed on the thermal expansion valve core, and the bottom of the support spring abuts against the sealing port.

[0014] The beneficial effects of the utility model are:

[0015] The top of the first filter cartridge abuts against the sealing port, and the bottom thereof abuts against the bottom wall of the liquid outlet channel, so that the medium in the liquid inlet channel passes through the filter holes of the first filter cartridge and enters the liquid outlet channel, thereby achieving a filtering effect on the medium, preventing impurities in the medium from accumulating at the sealing port, and achieving good blocking of the sealing port.

[0016] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a stereoscopic diagram of a preferred embodiment of the thermostatic steam trap of the utility model;

[0020] Figure 2 It is a cross-sectional view of a preferred embodiment of the thermostatic steam trap of the utility model;

[0021] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0023] In the figure:

[0024] 1. Valve seat;

[0025] 11. Liquid inlet channel; 12. Liquid outlet channel;

[0026] 13. Sealing port; 131. Sealing ring; 132. Sealing countersunk hole;

[0027] 14. Thermal expansion valve core; 15. First filter cartridge;

[0028] 16. Drain nut;

[0029] 161, drainage countersunk hole; 1611, mounting hole; 1612, mounting step;

[0030] 162, adjusting block; 1621, adjusting ring; 1622, sealing groove;

[0031] 163, second filter cartridge;

[0032] 17. Adjusting bolt; 171. Adjusting pin;

[0033] 18. Protective case;

[0034] 19. Support spring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0036] like Figures 1 to 4As shown, at least one embodiment provides a thermostatic steam trap, comprising: a valve seat 1, in which a liquid inlet channel 11 and a liquid outlet channel 12 are arranged, the liquid inlet channel 11 and the liquid outlet channel 12 are connected through a plugging port 13, a thermal expansion valve core 14 is arranged in the liquid outlet channel 12, and the thermal expansion valve core 14 is suitable for plugging the plugging port 13 after being heated, a first filter cartridge 15 is arranged in the liquid inlet channel 11, and; the top of the first filter cartridge 15 abuts against the plugging port 13, and the bottom thereof abuts against the plugging port 13. The bottom wall of the liquid outlet channel 12 is supported, so that the medium in the liquid inlet channel 11 passes through the filter holes of the first filter cartridge 15 and then enters the liquid outlet channel 12; in short, the top of the first filter cartridge 15 abuts against the plugging port 13, and the bottom thereof abuts against the bottom wall of the liquid outlet channel 12, so that the medium in the liquid inlet channel 11 passes through the filter holes of the first filter cartridge 15 and then enters the liquid outlet channel 12, thereby achieving a filtering effect on the medium, preventing impurities in the medium from accumulating at the plugging port 13, and achieving good plugging of the plugging port 13.

[0037] In some embodiments, the bottom of the valve seat 1 is threadedly connected with a drain nut 16, the top of the drain nut 16 is provided with a drain countersunk hole 161, and the bottom of the first filter cartridge 15 is inserted into the drain countersunk hole 161; in short, the first filter cartridge 15 can be supported by the drain countersunk hole 161; further, impurities in the liquid inlet channel 11 can be cleaned by disassembling the drain nut 16.

[0038] In some embodiments, an adjustment block 162 is rotatably provided on the drain nut 16, and a second filter cartridge 163 is integrally provided on the top of the adjustment block 162, and the second filter cartridge 163 is inserted into the first filter cartridge 15; in short, the first filter cartridge 15 and the second filter cartridge 163 are closely arranged, and by rotating the adjustment block 162, the filter holes of the second filter cartridge 163 can be caused to overlap or interlace with the filter holes of the first filter cartridge 15 to change the size of the final filter gap, wherein the filter gap is increased or decreased by the amount of impurities in the medium.

[0039] In some embodiments, a mounting hole 1611 is provided on the drain nut 16, and a mounting step 1612 is provided in the mounting hole 1611, the adjustment block 162 is inserted into the mounting hole 1611, and an adjustment ring 1621 is provided on the side wall of the adjustment block 162, and the bottom of the adjustment ring 1621 is abutted against the mounting step 1612; in short, the adjustment ring 1621 is provided on the adjustment block 162, and the installation of the adjustment block 162 is completed by the abutment between the adjustment ring 1621 and the mounting step 1612.

[0040] In some embodiments, the side walls of the adjusting block 162 and the adjusting ring 1621 are provided with a plurality of sealing grooves 1622, and the sealing grooves 1622 are suitable for clamping sealing rings; in short, by setting the sealing grooves 1622 and installing sealing rings therein, the installation gap between the adjusting block 162 and the drain nut 16 can be sealed to avoid leakage of the medium.

[0041] In some embodiments, the sealing port 13 is threadedly connected to a sealing ring 131, a sealing countersunk hole 132 is opened at the bottom of the sealing ring 131, and the top of the first filter cartridge 15 is against the sealing countersunk hole 132; in short, the sealing countersunk hole 132 opened at the bottom of the sealing ring 131 cooperates with the drain countersunk hole 161 to complete the installation of the first filter cartridge 15.

[0042] In some embodiments, an adjusting bolt 17 is provided on the top of the valve seat 1, and an adjusting pin 171 is threadedly connected to the adjusting bolt 17, and the thermal expansion valve core 14 is provided at the bottom of the adjusting pin 171; in short, the distance between the thermal expansion valve core 14 and the sealing ring 131 can be adjusted by rotating the adjusting pin 171.

[0043] In some embodiments, the top cover of the adjusting bolt 17 is provided with a protective shell 18 to protect the adjusting pin 171; in short, the adjusting pin 171 is protected by the protective shell 18 to prevent the position of the thermal expansion valve core 14 from changing, and the structure is simple and reliable.

[0044] In some embodiments, a support spring 19 is installed on the thermal expansion valve core 14, and the bottom of the support spring 19 abuts against the sealing port 13; in short, through the setting of the support spring 19, the thermal tension valve core can be supported to prevent the thermal expansion valve core 14 from rotating after the water flow impacts the thermal expansion valve core 14, so that the position of the adjusting pin 171 changes.

[0045] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A thermostatic steam trap, characterized in that: include: A valve seat (1) having a liquid inlet channel (11) and a liquid outlet channel (12) disposed therein, the liquid inlet channel (11) and the liquid outlet channel (12) being connected via a plugging port (13), a thermal expansion valve core (14) disposed in the liquid outlet channel (12), the thermal expansion valve core (14) being suitable for plugging the plugging port (13) after being heated, a first filter cartridge (15) disposed in the liquid inlet channel (11), and; The top of the first filter cartridge (15) abuts against the blocking port (13), and the bottom of the first filter cartridge (15) abuts against the bottom wall of the liquid outlet channel (12), so that the medium in the liquid inlet channel (11) passes through the filter holes of the first filter cartridge (15) and then enters the liquid outlet channel (12).

2. The thermostatic steam trap according to claim 1, characterized in that: The bottom of the valve seat (1) is threadedly connected to a drain nut (16), the top of the drain nut (16) is provided with a drain countersunk hole (161), and the bottom of the first filter cartridge (15) is inserted into the drain countersunk hole (161).

3. The thermostatic steam trap according to claim 2, characterized in that: An adjustment block (162) is rotatably arranged on the drain nut (16), a second filter cartridge (163) is integrally arranged on the top of the adjustment block (162), and the second filter cartridge (163) is inserted into the first filter cartridge (15).

4. The thermostatic steam trap according to claim 3, characterized in that: The drain nut (16) is provided with a mounting hole (1611), and a mounting step (1612) is provided in the mounting hole (1611); the adjustment block (162) is inserted into the mounting hole (1611), and an adjustment ring (1621) is provided on the side wall of the adjustment block (162), and the bottom of the adjustment ring (1621) abuts against the mounting step (1612).

5. The thermostatic steam trap according to claim 4, characterized in that: The side walls of the adjustment block (162) and the adjustment ring (1621) are provided with a plurality of sealing grooves (1622), and the sealing grooves (1622) are suitable for clamping sealing rings.

6. The thermostatic steam trap according to claim 1, characterized in that: The blocking port (13) is threadedly connected to a blocking ring (131), a blocking countersunk hole (132) is provided at the bottom of the blocking ring (131), and the top of the first filter cartridge (15) abuts against the blocking countersunk hole (132).

7. The thermostatic steam trap according to claim 1, characterized in that: An adjusting bolt (17) is arranged on the top of the valve seat (1), an adjusting pin (171) is threadedly connected to the adjusting bolt (17), and the thermal expansion valve core (14) is arranged at the bottom of the adjusting pin (171).

8. The thermostatic steam trap according to claim 7, characterized in that: The top cover of the adjusting bolt (17) is provided with a protective shell (18) to protect the adjusting pin (171).

9. The thermostatic steam trap according to claim 1, characterized in that: A support spring (19) is installed on the thermal expansion valve core (14), and the bottom of the support spring (19) abuts against the blocking opening (13).

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