Combined heat pipe type drain valve

Abstract

The invention relates to the technical field of drain valves, and discloses a combined heat pipe type drain valve which comprises a valve body, a connecting pipe is connected to the bottom of the valve body, a sewage draining and filtering assembly is arranged in the connecting pipe, and a control assembly for controlling the flow of the valve body is arranged in the valve body; the two ends of the valve body are both provided with internal threads, and the lock caps are both in threaded connection with flange plates. And a filter screen sleeve is arranged in the connecting pipe. According to the combined heat pipe type drain valve, through the arranged sewage discharging and filtering assembly, when sewage discharging or impurity discharging needs to be carried out, a ball valve is opened, impurities accumulated in a filter screen sleeve can be automatically flushed out, then rapid back flushing of the drain valve can be achieved, automatic discharging of the impurities is achieved, excessive operation is not needed in the whole process, and the working efficiency is improved. And only the ball valve needs to be controlled to be opened, so that the pollution discharge effect and the pollution discharge efficiency of the drain valve are greatly improved, and the use convenience of the drain valve is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam traps, and specifically to a combined heat pipe steam trap. Background Art

[0002] The basic function of a steam trap is to quickly discharge condensate, air and carbon dioxide gas in the steam system; at the same time, it can automatically prevent steam leakage to the greatest extent. There are many types of steam traps, each with different performances. When selecting a steam trap, first, its characteristics should meet the best operation of the steam heating equipment, and then other objective conditions can be considered.

[0003] The casting of existing heat pipe steam traps requires many kinds of molds. According to different diameters, pressures, and different national and American standards, multiple molds need to be opened.

[0004] Regarding sewage discharge, a hexagonal wrench is needed to unscrew the filter cover on-site. Because the on-site steam trap is used in conjunction with the front stop valve, this method requires closing the front stop valve first. After unscrewing the filter top cover, the filter needs to be cleaned. Then, the stop valve is opened to blow and wash the scale and impurities in the valve body. After that, the stop valve is closed, and the filter and filter cover are installed. Finally, the stop valve is opened to let the steam trap work normally. The entire sewage discharge process is too complicated, and the sewage discharge efficiency is too low. Therefore, a combined heat pipe steam trap is proposed to solve the above problems. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a combined heat pipe steam trap, which solves the problems that the sewage discharge process of the steam trap in the prior art is too cumbersome and prone to blockage of the steam trap.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the present invention provides the following technical solution: A combined heat pipe steam trap, including a valve body. A connecting pipe is connected to the bottom of the valve body. A sewage discharge and filtration assembly is arranged inside the connecting pipe. A control assembly for controlling the flow rate of the valve body is arranged inside the valve body. Internal threads are provided at both ends of the valve body. Locking nuts are threadedly connected to both ends of the valve body. Flange plates are threadedly connected to the locking nuts. A filter screen sleeve is arranged inside the connecting pipe. An inlet is provided at the left end of the valve body. An outlet is provided at the right end of the valve body. A flow channel is arranged inside the valve body. The fluid enters the inside of the flow channel from the inlet, passes through the filter screen sleeve, and is discharged from the outlet at the right end of the valve body.

[0009] Preferably, the sewage filtering component further includes a control valve component. The control valve component includes a ball valve seat. One side of the ball valve seat is threadedly connected to a connecting pipe. A wrench is rotatably connected to the ball valve seat. A sphere is connected to the wrench through a shaft rod. The sphere is located inside the ball valve seat.

[0010] Preferably, the filter sleeve is slidably connected inside the connecting pipe. A compression spring abuts against the bottom of the filter sleeve. The bottom of the compression spring abuts against the ball valve seat.

[0011] Preferably, a dirt pressing device is arranged inside the filter sleeve. The dirt pressing device includes a driving device and a reciprocating device. The driving device includes a driving gear sleeve. The driving gear sleeve is rotatably connected inside the flow channel of the valve body. A plurality of blades are installed inside the driving gear sleeve. After the fluid passes through the flow channel and through the blades, it will drive the driving gear sleeve to rotate by itself. A gear ring is meshed with the surface of the driving gear sleeve. The gear ring is connected to the filter sleeve.

[0012] Preferably, key inserts are arranged on the surface of the filter sleeve. Slots are formed inside the gear ring. The filter sleeve is inserted into the slots on the gear ring through the key inserts. A bearing ring is connected to the gear ring. The bearing ring is rotatably connected inside the valve body.

[0013] Preferably, the reciprocating device includes a sliding piece. A telescopic rod is connected to the sliding piece. The bottom of the telescopic rod is connected to a funnel cover through a connecting rod. The surface of the funnel cover is slidably connected to the inner wall of the filter sleeve.

[0014] Preferably, a contact plate is fixedly connected to the surface of the telescopic rod. A protrusion is fixedly connected to the bearing ring. When the protrusion rotates with the bearing ring, it will contact and lift the contact plate, thereby driving the telescopic rod to move up and down.

[0015] Preferably, a chute is formed inside the valve body. The sliding piece is slidably connected inside the chute. Two compression springs are connected to the bottom of the sliding piece. One end of the compression spring is connected inside the valve body.

[0016] Preferably, the control component includes a valve seat. A valve seat gland is arranged on the valve seat. A valve core is arranged inside the valve seat gland. A small spring is arranged between the valve core and the valve seat gland. A graphite gasket is connected to the upper surface of the valve core. A positioning tube is slidably connected to the surface of the valve core. The positioning tube is located inside the valve body. The top of the valve core is connected to a top cover. A protective cap abuts against the top of the top cover. The protective cap is threadedly connected to the valve body.

[0017] (III) Advantageous Effects

[0018] Compared with the prior art, the present invention provides a combined heat pipe type steam trap, which has the following advantageous effects:

[0019] 1. For this combined heat pipe type steam trap, through the arranged sewage discharge and filtration assembly, when sewage discharge or impurity removal is required, by opening the ball valve, it is possible to automatically flush out the impurities accumulated inside the filter screen sleeve, and then it is possible to achieve rapid backwashing of the steam trap, realizing automatic discharge of impurities. The whole process requires little operation, only need to control the opening of the ball valve, so it greatly improves the sewage discharge effect and efficiency of the steam trap, and improves the convenience of using the steam trap.

[0020] 2. For this combined heat pipe type steam trap, by designing the flange to be thread - detachable, only one type of thread die needs to be opened for the steam trap in the future. According to different calibers and pressures, various flanges can be processed separately, enabling the steam trap to be matched with multiple calibers in the later stage. This not only saves the mold - opening cost but also improves the connection and fit of the steam trap under various calibers, thus improving its overall applicability.

[0021] 3. For this combined heat pipe type steam trap, through the arranged impurity - pressing device, when the fluid passes through the filter screen, most of the impurities can be pressed at the bottom of the filter screen sleeve, avoiding rapid blockage of the filter screen sleeve and the need to frequently control the opening and closing of the ball valve, and improving the smoothness of the fluid flowing through the steam trap from the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a combined heat pipe type steam trap proposed by the present invention;

[0023] Figure 2 It is a schematic diagram of the overall sectional structure of a combined heat pipe type steam trap proposed by the present invention;

[0024] Figure 3 It is a schematic diagram of the connection structure of the filter screen sleeve of a combined heat pipe type steam trap proposed by the present invention;

[0025] Figure 4 It is a schematic diagram of the connection structure of the gear ring of a combined heat pipe type steam trap proposed by the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the impurity - pressing device of a combined heat pipe type steam trap proposed by the present invention;

[0027] Figure 6 It is a schematic diagram of the control component structure of a combined heat pipe type steam trap proposed by the present invention.

[0028] In the figure: 1, valve body; 2, lock nut; 3, flange; 4, control valve assembly; 401, ball valve seat; 402, wrench; 403, ball; 5, connecting pipe; 6, control assembly; 601, valve seat; 602, valve seat gland; 603, valve core; 604, small spring; 605, protective cap; 606, graphite gasket; 607, top cover; 7, sewage filtering assembly; 701, filter sleeve; 702, compression spring; 703, gear ring; 704, bearing ring; 705, driving gear sleeve; 706, blade; 707, sliding piece; 708, compression spring; 709, telescopic rod; 710, abutting plate; 711, protrusion; 712, funnel cover. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-6 , a combined heat pipe type steam trap, including a valve body 1, a connecting pipe 5 is connected to the bottom of the valve body 1, a sewage filtering assembly 7 is arranged inside the connecting pipe 5, and a control assembly 6 for controlling the flow rate of the valve body 1 is arranged inside the valve body 1;

[0031] In this embodiment, internal threads are provided at both ends of the valve body 1, lock nuts 2 are threadedly connected to both ends of the valve body 1, and flange plates 3 are threadedly connected to the lock nuts 2; a filter sleeve 701 is arranged inside the connecting pipe 5, an inlet is provided at the left end of the valve body 1, an outlet is provided at the right end of the valve body 1, a flow channel is arranged inside the valve body 1, and the fluid enters the inside of the flow channel from the inlet and is discharged from the outlet at the right end of the valve body 1 after passing through the filter sleeve 701. The flange plates 3 at both ends of the entire valve body 1 are connected by a detachable threaded connection method, so the mold opening size of the entire valve body 1 does not need to consider the pipe size for cooperation. Later, as long as flange plates 3 of different sizes are threadedly connected at both ends of the valve body 1, it not only reduces the multiple mold opening costs of the traditional method but also improves the applicability of the entire valve body 1.

[0032] Furthermore, the sewage filtering component 7 further includes a control valve component 4. The control valve component 4 includes a ball valve seat 401. One side of the ball valve seat 401 is threadedly connected to the connecting pipe 5. A wrench 402 is rotatably connected to the ball valve seat 401. A ball 403 is connected to the wrench 402 through a shaft rod. The ball 403 is located inside the ball valve seat 401. The operator can open the control valve component 4, and the control valve component 4 is actually a ball valve structure as a whole. After the ball valve is opened, at this time, the fluid will not penetrate from the surface of the filter screen sleeve 701, but will flow along the oblique direction of the filter screen sleeve 701 for pressure discharge and discharge from the end position of the ball valve seat 401. Therefore, the impurities accumulated or attached inside the filter screen sleeve 701 will be flushed out with the fluid or gas, thereby achieving the effect of automatic sewage cleaning.

[0033] Furthermore, the filter screen sleeve 701 is slidably connected inside the connecting pipe 5. A compression spring 702 abuts against the bottom of the filter screen sleeve 701, and the bottom of the compression spring 702 abuts against the ball valve seat 401. When it is necessary to remove, replace, and repair the filter screen sleeve 701, the ball valve seat 401 needs to be removed by threaded rotation, and then the compression spring 702 is removed. The filter screen sleeve 701 will slide out due to gravity, and the operator can replace and maintain the filter screen sleeve 701.

[0034] In addition, a impurity pressing device is provided inside the filter screen sleeve 701. The impurity pressing device includes a driving device and a reciprocating device; the driving device includes a driving gear sleeve 705. The driving gear sleeve 705 is rotatably connected inside the flow channel of the valve body 1. A plurality of blades 706 are installed inside the driving gear sleeve 705. After the fluid passes through the flow channel and passes through the blades 706, it will drive the driving gear sleeve 705 to rotate by itself; a gear ring 703 is meshed with the surface of the driving gear sleeve 705, and the gear ring 703 is connected to the filter screen sleeve 701. When the fluid or gas passes through the middle of the driving gear sleeve 705, it will drive the rotation of the blades 706, and then drive the rotation of the driving gear sleeve 705. The driving gear sleeve 705 will drive the rotation of the gear ring 703 through the meshing of gears, using the flow of the fluid or gas as the power source to realize the rotation of the filter screen sleeve 701 and the operation of the subsequent impurity pressing device.

[0035] In addition, insertion keys are provided on the surface of the filter screen sleeve 701, and slots are formed inside the gear ring 703. The filter screen sleeve 701 is inserted into the slots on the gear ring 703 through the insertion keys. A bearing ring 704 is connected to the gear ring 703, and the bearing ring 704 is rotatably connected inside the valve body 1. Since the entire filter screen sleeve 701 is required to have a detachable function for easy later maintenance, an indirect insertion method is adopted. The rotation of the gear ring 703 drives the rotation of the filter screen sleeve 701, and the rotation of the gear ring 703 will drive the inserted filter screen sleeve 701 to rotate in real time. Therefore, at this time, with the flow of the fluid, the rotation of the filter screen sleeve 701 will be automatically controlled, thereby preventing the filtering position of the filter screen sleeve 701 from being at the same position.

[0036] It should be noted that the reciprocating device includes a sliding piece 707. A telescopic rod 709 is connected to the sliding piece 707. The bottom of the telescopic rod 709 is connected to a funnel cover 712 through a connecting rod. The surface of the funnel cover 712 is slidably connected to the inner wall of the filter screen sleeve 701. A contact plate 710 is fixedly connected to the surface of the telescopic rod 709, and a protrusion 711 is fixedly connected to the bearing ring 704. When the protrusion 711 rotates with the bearing ring 704, it will contact and lift the contact plate 710, thereby driving the telescopic rod 709 to move up and down. When the bearing ring 704 rotates, it will drive the two protrusions 711 to rotate synchronously. On the rotation path of the protrusion 711, it will contact the contact plate 710. Using the set surface inclined plane, it will slide into contact with the contact plate 710, thereby lifting the contact plate 710 and driving the telescopic rod 709 to move obliquely up and down. After that, the telescopic rod 709 slides obliquely up and down, which will drive the funnel cover 712 to move up and down. The funnel cover 712 has two functions. One is to scrape impurities on the inner wall of the filter screen sleeve 701 during the sliding process to prevent the filter screen sleeve 701 from being blocked. The other is to isolate a larger part of the impurities. Because when the fluid or gas flows, with the reciprocating movement of the funnel cover 712, it will control the floating impurities to enter below the funnel cover 712, ensuring the cleanliness of the fluid flow path.

[0037] It should be noted that a chute is formed inside the valve body 1, and the sliding piece 707 is slidably connected inside the chute. Two compression springs 708 are connected to the bottom of the sliding piece 707, and one end of the compression spring 708 is connected inside the valve body 1. The set chute can limit the sliding direction of the sliding piece 707. After the protrusion 711 disengages after the sliding piece 707 moves upward, the compression spring 708 contracts to drive the sliding piece 707 to reset.

[0038] It is worth mentioning that the control component 6 includes a valve seat 601, on which a valve seat gland 602 is provided. Inside the valve seat gland 602, there is a valve core 603. A small spring 604 is arranged between the valve core 603 and the valve seat gland 602. A graphite gasket 606 is connected to the upper surface of the valve core 603. A positioning tube is slidably connected to the surface of the valve core 603, and the positioning tube is located inside the valve body 1. The top of the valve core 603 is connected to a top cover 607, and a protective cap 605 abuts against the top of the top cover 607. The protective cap 605 is threadedly connected to the valve body 1. The entire control component 6 belongs to the prior art, and the valve core 603 is made of a corrugated pipe filled with a volatile liquid inside. When encountering steam, it expands to close the valve; when encountering condensed water, it contracts to open the valve.

[0039] Working principle: First, the flanges 3 at both ends of the entire valve body 1 are connected by a detachable threaded connection method. Therefore, the mold opening size of the entire valve body 1 does not need to consider the pipe size for mating. Later, as long as flanges 3 of different sizes are connected by threads at both ends of the valve body 1, which not only reduces the multiple mold opening costs of the traditional method but also improves the applicability of the entire valve body 1. When the entire valve body 1 is in use, the fluid will enter the internal flow channel from the left inlet of the valve body 1. Then the fluid enters the inside of the filter sleeve 701, passes through the pores on the surface, and then flows upward to the position of the valve seat 601, and then is discharged from the right outlet. Therefore, through the setting of the filter sleeve 701, effective impurity filtration of the fluid or gas can be achieved. After a period of use, the operator can open the control valve assembly 4. The control valve assembly 4 is actually a ball valve structure as a whole. After opening the ball valve, at this time, the fluid will not penetrate from the surface of the filter sleeve 701, but will flow along the oblique direction of the filter sleeve 701 for pressure discharge and be discharged from the end position of the ball valve seat 401. Therefore, the impurities previously accumulated or attached inside the filter sleeve 701 will be flushed out with the fluid or gas, thus achieving the effect of automatic sewage discharge and cleaning. In order to prevent the working surface of the filter sleeve 701 from always being in one plane, a driving gear sleeve 705 is provided for the entire device. When the fluid or gas passes through the middle of the driving gear sleeve 705, it will drive the rotation of the blade 706, and then drive the rotation of the driving gear sleeve 705. The driving gear sleeve 705 will drive the rotation of the gear ring 703 through the meshing of gears. The rotation of the gear ring 703 will drive the filter sleeve 701 inserted therewith to rotate in real time. Therefore, at this time, with the flow of the fluid, the rotation of the filter sleeve 701 will be automatically controlled, thus avoiding the filtering position of the filter sleeve 701 being in the same position. Then when the bearing ring 704 rotates, it will drive the two protrusions 711 to rotate synchronously. On the path of the rotation of the protrusions 711, they will abut against the abutting plate 710. Using the inclined surface of the avoidance, they will be in sliding contact with the abutting plate 710, thus lifting the abutting plate 710 and driving the telescopic rod 709 to move obliquely up and down. Then the telescopic rod 709 slides obliquely up and down, which will drive the funnel cover 712 to move up and down. The funnel cover 712 has two functions. One is to scrape impurities on the inner wall of the filter sleeve 701 during the sliding process to prevent the filter sleeve 701 from being blocked. The other is that it can isolate a larger part of the impurities. Because when the fluid or gas is flowing, with the reciprocating movement of the funnel cover 712, it will control the floating impurities to enter below the funnel cover 712 to ensure the cleanliness of the fluid flow path. The overall principle is like a "fish basket". When the fish enters the inside of the basket, due to the structural shape of the funnel, it is not easy to come out of the basket. And such is this technical solution. After the impurities pass through the funnel cover 712, it is very difficult to flow back above the funnel cover 712, so that the impurities accumulate in the lower space of the filter sleeve 701. Then, with the opening of the ball valve, the impurities are flushed out.The whole process can effectively improve the flow smoothness of the valve body and avoid the blockage of the filter sleeve 701.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A combined heat pipe steam trap, characterized in that: include A valve body (1), wherein the bottom of the valve body (1) is connected to a connecting pipe (5), a sewage filter assembly (7) is arranged inside the connecting pipe (5), and a control assembly (6) for controlling the flow of the valve body (1) is arranged inside the valve body (1); Both ends of the valve body (1) are provided with internal threads, both ends of the valve body (1) are threadedly connected with lock caps (2), and both ends of the lock caps (2) are threadedly connected with flanges (3); The connecting pipe (5) is provided with a filter sleeve (701) inside, the left end of the valve body (1) is provided with an inlet, the right end of the valve body (1) is provided with an outlet, and the valve body (1) is provided with a flow channel inside. The fluid enters the flow channel from the inlet, passes through the filter sleeve (701), and is discharged from the outlet at the right end of the valve body (1).

2. A combined heat pipe steam trap according to claim 1, characterized in that: The sewage filter assembly (7) also includes a control valve assembly (4), the control valve assembly (4) includes a ball valve seat (401), one side of the ball valve seat (401) is threadedly connected to the connecting pipe (5), a wrench (402) is rotatably connected to the ball valve seat (401), and a ball (403) is connected to the wrench (402) via a shaft, and the ball (403) is located inside the ball valve seat (401).

3. A combined heat pipe steam trap according to claim 2, characterized in that: The filter sleeve (701) is slidably connected to the inside of the connecting pipe (5), the bottom of the filter sleeve (701) is in contact with a pressing spring (702), and the bottom of the pressing spring (702) is in contact with the ball valve seat (401).

4. The combined heat pipe steam trap according to claim 1, characterized in that: The filter sleeve (701) is provided with a compacting device inside, and the compacting device includes a driving device and a reciprocating device; The driving device comprises a driving gear sleeve (705), the driving gear sleeve (705) is rotatably connected to the inside of the flow channel of the valve body (1), a plurality of blades (706) are installed inside the driving gear sleeve (705), and after the fluid passes through the flow channel and the blades (706), it will drive the driving gear sleeve (705) to rotate. The surface of the driving gear sleeve (705) is meshed with a gear ring (703), and the gear ring (703) is connected to the filter sleeve (701).

5. The combined heat pipe steam trap according to claim 4, characterized in that: The surface of the filter sleeve (701) is provided with an insertion key, and the interior of the gear ring (703) is provided with a slot, and the filter sleeve (701) is inserted into the slot on the gear ring (703) through the insertion key. The gear ring (703) is connected to a bearing ring (704), and the bearing ring (704) is rotatably connected to the interior of the valve body (1).

6. The combined heat pipe steam trap according to claim 5, characterized in that: The reciprocating device comprises a sliding plate (707), the sliding plate (707) is connected to a telescopic rod (709), the bottom of the telescopic rod (709) is connected to a funnel cover (712) via a connecting rod, and the surface of the funnel cover (712) is slidably connected to the inner wall of the filter sleeve (701).

7. The combined heat pipe steam trap according to claim 6, characterized in that: The surface of the telescopic rod (709) is fixedly connected with an abutment plate (710), and the bearing ring (704) is fixedly connected with a protrusion (711). When the protrusion (711) rotates with the bearing ring (704), it will contact and lift up with the abutment plate (710), thereby driving the telescopic rod (709) to move up and down.

8. The combined heat pipe steam trap according to claim 7, characterized in that: The valve body (1) is provided with a sliding groove inside, and the sliding sheet (707) is slidably connected inside the sliding groove. Two compression springs (708) are connected to the bottom of the sliding sheet (707), and one end of the compression spring (708) is connected to the inside of the valve body (1).

9. The combined heat pipe steam trap according to claim 1, characterized in that: The control component (6) includes a valve seat (601), a valve seat cover (602) is arranged on the valve seat (601), a valve core (603) is arranged inside the valve seat cover (602), a small spring (604) is arranged between the valve core (603) and the valve seat cover (602), a graphite pad (606) is connected to the upper surface of the valve core (603), a positioning tube is slidably connected to the surface of the valve core (603), and the positioning tube is located inside the valve body (1), the top of the valve core (603) is connected to a top cover (607), the top of the top cover (607) is abutted against a protective cap (605), and the protective cap (605) is threadedly connected to the valve body (1).

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