Inverted bucket convenient to exhaust for pneumatic drain valve

Abstract

The utility model discloses an inverted bucket convenient to exhaust for a pneumatic drain valve, which belongs to the technical field of drain valves, and comprises a bucket body, a compression spring is fixedly connected to the upper end of the bucket body, a push plate is fixedly connected to the upper end of the compression spring, and a guide rod insertion hole is formed in the center of the upper end of the bucket body. According to the inverted bucket, the escape amount of steam can be reduced while the exhaust speed of the inverted bucket is increased, when the bucket body moves up and down through cooperation of the push plate, the bucket body exhaust hole can be matched with the insertion rod to be opened and closed, the exhaust speed of the bucket body is greatly increased, and the escape amount of steam in the bucket body is reduced; the compression spring at the upper end of the barrel body replaces a lever, it is ensured that the barrel body provides enough thrust for the valve element in the using process, the situation that the valve element cannot be tightly attached to the valve seat due to the fact that elasticity is reduced due to fatigue of the lever is avoided, and the working stability of the drain valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam traps, and more specifically to an inverted bucket for a pneumatic steam trap which is convenient for exhausting gas. Background Art

[0002] The steam trap is called a steam trap, also called an automatic drainer or a condensate drainer. It is divided into steam system use and gas system use. The steam trap is installed at the end of the steam-heated pipeline. Its function is to continuously discharge the condensed water in the steam-heated pipeline to the outside of the pipeline. The inverted bucket steam trap is the most common type of steam trap. The inverted bucket steam trap is a steam trap named according to its internal structure. As the name suggests, the inverted bucket steam trap is a steam trap with an "inverted bucket" inside. This "inverted bucket" is a liquid-sensitive component that can realize the closing and opening of the valve core by connecting a lever. The biggest feature of the inverted bucket steam trap is that it can discharge gas, is not afraid of water hammer, and has very good anti-fouling performance.

[0003] When the device is just started, the air and low-temperature condensate in the pipeline enter the steam trap, and the inverted bucket falls by its own weight. The inverted bucket connecting lever drives the valve core to open the valve, and the air and low-temperature condensate are quickly discharged. When steam enters the inverted bucket, the steam in the inverted bucket generates upward buoyancy, and the inverted bucket rises and the connecting lever drives the valve core to close the valve. There is a small hole on the inverted bucket. When part of the steam is discharged from the small hole, the other part of the steam generates condensate, and the inverted bucket loses buoyancy and sinks by its own weight. The inverted bucket connecting lever drives the valve core to open the valve, and the cycle works and the water is discharged intermittently.

[0004] However, in the existing structure, the small hole on the top of the inverted bucket is very small, so the air exhaust speed will be very slow, and the hole cannot be too large, otherwise a large amount of steam will escape through this small hole during normal operation, and the lever on the top of the inverted bucket is prone to fatigue due to long-term repeated switching, making it impossible for the valve core to fit tightly with the valve seat, affecting the sealing performance between the valve core and the valve seat. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide an inverted bucket for a pneumatic steam trap that is easy to exhaust. It can increase the exhaust speed of the inverted bucket while reducing the escape amount of steam. Through the cooperation of the push plate, when the barrel body moves up and down, the exhaust hole of the barrel body can cooperate with the plug rod to open and close, which greatly improves the exhaust speed of the barrel body and reduces the escape amount of steam inside the barrel body. The compression spring at the upper end of the barrel body replaces the lever, ensuring that the barrel body provides sufficient thrust to the valve core during use, preventing the elastic force from being reduced due to lever fatigue, making the valve core unable to fit tightly with the valve seat, and improving the working stability of the steam trap.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] An inverted bucket for air exhaust of a pneumatic steam trap comprises a barrel body, the upper end of the barrel body is fixedly connected to a compression spring, the upper end of the compression spring is fixedly connected to a push plate, a guide rod insertion hole is provided at the center of the upper end of the barrel body, and a guide rod is fixedly connected to the lower center of the push plate, the lower end of the guide rod is inserted into the guide rod insertion hole, and an anti-air lock vent is provided at the center of the guide rod, four barrel body exhaust holes are provided at the upper end of the barrel body, and the four barrel body exhaust holes are arranged around the guide rod insertion hole at equal intervals, four plug rods are fixedly connected to the lower end of the push plate, and the four plug rods are respectively matched with the four barrel body exhaust holes, a valve core mounting groove is provided at the upper end of the push plate, a valve core fixing seat is fixedly connected in the valve core mounting groove, the valve core fixing seat is a circular ring structure, and a plurality of valve core fixing holes distributed at equal intervals are provided at the upper end of the valve core fixing seat.

[0010] Furthermore, a spring bottom clamp is fixedly connected to the upper end of the barrel body near the edge, and the inner wall of the spring bottom clamp is abutted against the lower end of the compression spring. The spring bottom clamp facilitates the fixation of the lower end of the compression spring and prevents the lower end of the compression spring from vibrating and deviating, thereby ensuring the working stability of the compression spring.

[0011] Furthermore, a spring top slot is provided at the lower end of the push plate, and the inner wall of the spring top slot abuts against the upper end of the compression spring. The spring top slot facilitates the fixation of the upper end of the compression spring and prevents the upper end of the compression spring from vibrating and deviating, thereby making the horizontal position of the push plate more stable.

[0012] Furthermore, an anti-overflow opening is fixedly connected to the lower end of the barrel body. The anti-overflow opening is an annular structure with the lower end bent inwardly. The anti-overflow opening can prevent steam from escaping from the bottom of the barrel body.

[0013] Furthermore, the guide rod is a rectangular parallelepiped structure, and the guide rod insertion hole is a square through hole. The cooperation between the guide rod and the guide rod insertion hole can prevent the push plate from rotating, ensuring that the insertion rod is aligned with the exhaust hole of the barrel body.

[0014] Furthermore, the lower end of the insertion rod is a hemispherical structure, which facilitates the insertion of the insertion rod into the exhaust hole of the barrel body, and when the insertion rod is inserted downward into the exhaust hole of the barrel body, the air circulation area in the exhaust hole of the barrel body gradually decreases, reducing the resistance to the insertion of the insertion rod.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This solution can improve the exhaust speed of the inverted bucket while reducing the amount of steam escaping. By cooperating with the push plate, the exhaust hole of the barrel body can be opened and closed in coordination with the plug rod when the barrel body moves up and down, which greatly improves the exhaust speed of the barrel body and reduces the amount of steam escaping from inside the barrel body. The compression spring at the upper end of the barrel body replaces the lever, ensuring that the barrel body provides sufficient thrust to the valve core during use, preventing the reduction of elastic force due to lever fatigue, which makes the valve core unable to fit tightly with the valve seat, and improving the working stability of the steam trap.

[0018] (2) A spring bottom clamp is fixedly connected near the edge of the upper end of the barrel body, and the inner wall of the spring bottom clamp abuts against the lower end of the compression spring. The spring bottom clamp facilitates the fixation of the lower end of the compression spring and prevents the lower end of the compression spring from vibrating and deviating, thereby ensuring the working stability of the compression spring.

[0019] (3) A spring top slot is provided at the lower end of the push plate, and the inner wall of the spring top slot abuts against the upper end of the compression spring. The spring top slot facilitates the fixation of the upper end of the compression spring and prevents the upper end of the compression spring from vibrating and deviating, thereby making the horizontal position of the push plate more stable.

[0020] (4) The lower end of the barrel body is fixedly connected with an anti-overflow opening, which is a ring-shaped structure with the lower end bent inward. The anti-overflow opening can prevent steam from escaping from the bottom of the barrel body.

[0021] (5) The guide rod is a rectangular parallelepiped structure, and the guide rod insertion hole is a square through hole. The cooperation between the guide rod and the guide rod insertion hole can prevent the push plate from rotating, ensuring that the insertion rod is aligned with the exhaust hole of the barrel body.

[0022] (6) The lower end of the plug rod is a hemispherical structure, which facilitates the insertion of the plug rod into the exhaust hole of the barrel body. When the plug rod is inserted downward into the exhaust hole of the barrel body, the air flow area in the exhaust hole of the barrel body gradually decreases, reducing the resistance to the insertion of the plug rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 3 It is a cross-sectional view of the push plate in the utility model;

[0026] Figure 4 It is a schematic diagram of the top view of the push plate in the utility model.

[0027] Description of the numbers in the figure:

[0028] 1 barrel body, 2 spring bottom clamp ring, 3 compression spring, 4 push plate, 5 guide rod, 6 valve core fixing seat, 7 plug rod, 8 barrel body exhaust hole, 9 guide rod plug hole, 10 anti-air lock vent hole, 11 valve core fixing hole, 12 valve core installation groove, 13 spring top slot, 14 anti-overflow closing mouth. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 utility model can be understood according to specific circumstances.

[0032] Embodiment 1:

[0033] See also Figure 1-4 , an inverted bucket for air-operated steam traps to facilitate exhaust, see Figure 1 and Figure 2, including a barrel body 1, the barrel body 1 is a hollow cylindrical structure, and its lower end is open. The upper end of the barrel body 1 is fixedly connected to a compression spring 3. The upper end of the barrel body 1 is fixedly connected to a spring bottom clamp ring 2 near the edge. The inner wall of the spring bottom clamp ring 2 is against the lower end of the compression spring 3. The spring bottom clamp ring 2 facilitates the fixation of the lower end of the compression spring 3 and prevents the lower end of the compression spring 3 from vibrating and deviating, thereby ensuring the working stability of the compression spring 3. The elastic force of the compression spring 3 is much smaller than the buoyancy generated by the steam in the barrel body 1. The lower end of the barrel body 1 is fixedly connected to an anti-overflow closure 14, which is an annular structure with its lower end bent inward. The anti-overflow closure 14 can prevent steam from escaping from the bottom of the barrel body 1, and the upper end of the compression spring 3 is fixedly connected to a push plate 4;

[0034] See also Figure 3 and Figure 4 The lower end of the push plate 4 is provided with a spring top slot 13, the inner wall of the spring top slot 13 abuts against the upper end of the compression spring 3, the spring top slot 13 facilitates the fixation of the upper end of the compression spring 3 and prevents the upper end of the compression spring 3 from vibrating and deviating, thereby making the horizontal position of the push plate 4 more stable;

[0035] See also Figure 1 and Figure 2 A guide rod insertion hole 9 is provided at the center of the upper end of the barrel body 1, and a guide rod 5 is fixedly connected to the center of the lower end of the push plate 4. The lower end of the guide rod 5 is inserted into the guide rod insertion hole 9, and an anti-gas lock vent 10 is provided at the center of the guide rod 5. The anti-gas lock vent 10 can prevent the occurrence of gas lock in the barrel body 1 while discharging a small amount of steam. The guide rod 5 is a rectangular parallelepiped structure, and the guide rod insertion hole 9 is a square through hole. The cooperation of the guide rod 5 and the guide rod insertion hole 9 can prevent the push plate 4 from rotating, ensuring that the insertion rod 7 is aligned with the barrel body exhaust hole 8. Four barrel body exhaust holes 8 are provided at the upper end of the barrel body 1, and the four barrel body exhaust holes 8 are equidistantly arranged around The guide rod socket 9 is arranged around, and four plug rods 7 are fixedly connected to the lower end of the push plate 4, and the four plug rods 7 are matched with the four barrel exhaust holes 8 respectively. The lower end of the plug rod 7 is a hemispherical structure, and the hemispherical lower end is convenient for the plug rod 7 to be inserted into the barrel exhaust hole 8, and when the plug rod 7 is inserted downward into the barrel exhaust hole 8, the air circulation area in the barrel exhaust hole 8 gradually decreases, reducing the resistance to the insertion of the plug rod 7, and the upper end of the push plate 4 is provided with a valve core mounting groove 12, and a valve core fixing seat 6 is fixedly connected in the valve core mounting groove 12, and the valve core fixing seat 6 is a circular ring structure, and the upper end of the valve core fixing seat 6 is provided with a plurality of valve core fixing holes 11 distributed at equal intervals.

[0036] When in use, when air and low-temperature condensed water enter the barrel body 1, they are directly discharged from the barrel body exhaust hole 8. When steam enters the barrel body 1, the steam pushes the barrel body 1 up, and the top of the valve core fixed on the valve core fixing seat 6 at the upper end of the push plate 4 abuts against the valve seat, closing the water outlet valve, and the barrel body 1 continues to rise, and the compression spring 3 contracts, so that the plug rod is inserted into the barrel body exhaust hole, blocking the barrel body exhaust hole 8, so that the steam can only be discharged through the anti-gas lock vent 10 in the center of the guide rod 5. When a part of the steam is discharged from the anti-gas lock vent 10, the other part of the steam generates condensed water, and the barrel body 1 loses buoyancy and relies on itself to The weight of the body sinks, and the push plate 4 is reset under the action of the compression spring 3, and the exhaust hole 8 of the barrel body is opened again, which can improve the exhaust speed of the inverted bucket while reducing the escape amount of steam. Through the cooperation of the push plate, when the barrel body moves up and down, the exhaust hole of the barrel body can cooperate with the plug rod to open and close, which greatly improves the exhaust speed of the barrel body and reduces the escape amount of steam inside the barrel body. The compression spring at the upper end of the barrel body replaces the lever to ensure that the barrel body provides sufficient thrust to the valve core during use, prevents the elastic force from being reduced due to lever fatigue, and makes the valve core unable to fit closely with the valve seat, thereby improving the working stability of the steam trap.

[0037] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An inverted bucket for air-operated steam trap, comprising a bucket body (1), characterized in that: The upper end of the barrel body (1) is fixedly connected to a compression spring (3), the upper end of the compression spring (3) is fixedly connected to a push plate (4), the upper end center of the barrel body (1) is provided with a guide rod insertion hole (9), and the lower end center of the push plate (4) is fixedly connected to a guide rod (5), the lower end of the guide rod (5) is inserted into the guide rod insertion hole (9), and the center of the guide rod (5) is provided with an anti-gas lock vent (10), the upper end of the barrel body (1) is provided with four barrel body exhaust holes (8), and the four barrel exhaust holes (8) are provided at the upper end of the barrel body (1). The exhaust holes (8) of the barrel body are arranged at equal intervals around the guide rod insertion hole (9); the lower end of the push plate (4) is fixedly connected with four insertion rods (7), and the four insertion rods (7) are respectively matched with the four exhaust holes (8) of the barrel body; the upper end of the push plate (4) is provided with a valve core installation groove (12); the valve core installation groove (12) is fixedly connected with a valve core fixing seat (6); the valve core fixing seat (6) is a circular ring structure, and the upper end of the valve core fixing seat (6) is provided with a plurality of valve core fixing holes (11) distributed at equal intervals.

2. The inverted bucket for venting air for a pneumatic steam trap according to claim 1, characterized in that: A spring bottom clamp ring (2) is fixedly connected to the upper end of the barrel body (1) near the edge, and the inner wall of the spring bottom clamp ring (2) abuts against the lower end of the compression spring (3).

3. The inverted bucket for venting air for a pneumatic steam trap according to claim 1, characterized in that: A spring top slot (13) is provided at the lower end of the push plate (4), and the inner wall of the spring top slot (13) abuts against the upper end of the compression spring (3).

4. The inverted bucket for venting air for a pneumatic steam trap according to claim 1, characterized in that: The lower end of the barrel body (1) is fixedly connected with an anti-overflow opening (14), and the anti-overflow opening (14) is an annular structure with the lower end bent inwards.

5. The inverted bucket for venting air for a pneumatic steam trap according to claim 1, characterized in that: The guide rod (5) is a rectangular parallelepiped structure, and the guide rod insertion hole (9) is a square through hole.

6. The inverted bucket for venting air for a pneumatic steam trap according to claim 1, characterized in that: The lower end of the insertion rod (7) is a hemispherical structure.

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