A lever cock trap with inverted bucket

Abstract

The utility model provides a kind of inverted bucket lever faucet drain valve, it includes valve body, valve cover, switch subassembly and second through pipe, the valve cover is located on the valve body;The switch subassembly is located in the first space, the switch subassembly includes inverted bucket subassembly, first through pipe and the connecting block of the outer contour being spherical, the connecting block is located in the first through pipe, first passageway is equipped on the connecting block, one end of the inverted bucket subassembly passes through the first through pipe and the connecting block is connected, the inverted bucket subassembly and the first through pipe rotationally connect, the inverted bucket subassembly and the connecting block cooperate for controlling the communication state of the first through pipe;The first through pipe and the second flow passage are communicated.The utility model solves the problem that the flow of condensate of traditional drain valve is big or small.

Description

Technical Field

[0001] This utility model relates to the field of steam trap technology, and more specifically, to a lever-operated stopcock steam trap for an inverted bucket. Background Technology

[0002] A steam trap, also known as a condensate trap or drain valve, is a valve designed to quickly discharge condensate, air, and carbon dioxide from a steam system while automatically preventing steam leakage to the greatest extent possible. There are many types of steam traps, each with different performance characteristics. Traditional steam traps suffer from inconsistent condensate flow rates. Utility Model Content

[0003] Therefore, in order to solve the problem of inconsistent condensate flow in traditional steam traps, this utility model provides an inverted bucket lever-operated stopcock steam trap, the specific technical solution of which is as follows: A lever-operated drain valve for inverted buckets, comprising: Valve body; A valve cover is disposed on the valve body, and a first space is formed between the valve body and the valve cover. The valve cover is provided with a first flow channel and a second flow channel that are both connected to the first space. A switch assembly is disposed within the first space. The switch assembly includes an inverted bucket assembly, a first through pipe, and a connecting block with a spherical outer contour. The connecting block is disposed within the through pipe and has a first channel. One end of the inverted bucket assembly passes through the through pipe and connects to the connecting block. The inverted bucket assembly and the through pipe are rotatably connected. The inverted bucket assembly and the connecting block cooperate to control the communication state of the through pipe. The through pipe communicates with the second flow channel. A second conduit is disposed within the first space, with one end of the second conduit communicating with the first flow channel and the other end extending into the inverted bucket assembly. The aforementioned inverted bucket lever-operated stopcock steam trap directly drives a spherical connecting block to rotate within the passage pipe via the inverted bucket assembly (instead of the linear motion of a traditional lever), converting sliding friction into rolling friction and reducing resistance. The spherical connecting block forms a full-circumferential seal with the inner wall of the passage pipe, ensuring uniform pressure without stress concentration. The rotational opening and closing process is free of axial impact, preventing wear on the sealing surface and extending service life. The flow rate in the first flow channel and the first passage pipe is controlled by varying the height of the bucket assembly. This inverted bucket lever-operated stopcock steam trap solves the problem of inconsistent condensate flow rates in traditional steam traps.

[0004] Furthermore, the inverted bucket assembly includes a first connecting arm and a first inverted bucket; one end of the first connecting arm is connected to the connecting block, and the other end of the first connecting arm is provided with a hook, and the first inverted bucket is hung upside down on the hook.

[0005] Furthermore, the first inverted bucket is positioned close to the inner surface of the valve body.

[0006] Furthermore, the top of the first inverted bucket is provided with a first through hole.

[0007] Furthermore, the second conduit includes a first conduit portion and a second conduit portion with an arc-shaped outer contour. The first conduit portion is arranged vertically, one end of the first conduit portion is connected to the first flow channel, the other end of the first conduit portion is connected to one end of the second conduit portion, and the other end of the second conduit portion extends into the first inverted bucket. Attached Figure Description

[0008] The present invention can be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale; rather, the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0009] Figure 1 This is a schematic diagram of the structure of the inverted bucket lever stopcock drain valve according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the inverted bucket lever stopcock drain valve according to an embodiment of the present invention; Figure 3 yes Figure 2 Enlarged view of part A.

[0010] Explanation of reference numerals in the attached figures: 1-Valve body; 2-Valve cover; 3-First space; 4-First flow channel; 5-Second flow channel; 6-Switch assembly; 61-Inverted bucket assembly; 611-First connecting arm; 612-First inverted bucket; 62-First through pipe; 63-Connecting block; 7-First channel; 8-Second through pipe; 81-First pipe section; 82-Second pipe section; 9-First through hole. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.

[0012] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0014] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0015] like Figures 1-2 As shown, an embodiment of the present invention provides a lever-operated drain valve with an inverted bucket, comprising a valve body 1, a valve cover 2, a switch assembly 6, and a second passage pipe 8. The valve cover 2 is disposed on the valve body 1, and a first space 3 is formed between the valve body 1 and the valve cover 2. The valve cover 2 is provided with a first flow channel 4 and a second flow channel 5, both of which communicate with the first space 3. The switch assembly 6 is disposed within the first space 3 and includes an inverted bucket assembly 61, a first passage pipe 62, and a connecting block 63 with a spherical outer contour. The connecting block 63 is disposed on the first passage pipe 62. Inside, the connecting block 63 is provided with a first channel 7. One end of the inverted bucket assembly 61 passes through the first through pipe 62 and is connected to the connecting block 63. The inverted bucket assembly 61 and the first through pipe 62 are rotatably connected. The inverted bucket assembly 61 and the connecting block 63 cooperate to control the communication state of the first through pipe 62. The first through pipe 62 is connected to the second flow channel 5. The second through pipe 8 is provided in the first space 3. One end of the second through pipe 8 is connected to the first flow channel 4, and the other end of the second through pipe 8 extends into the inverted bucket assembly 61.

[0016] The aforementioned inverted bucket lever-operated stopcock steam trap directly drives the spherical connecting block 63 to rotate within the passage pipe via the inverted bucket assembly 61 (instead of the linear motion of a traditional lever), converting sliding friction into rolling friction and reducing resistance. The spherical connecting block 63 forms a full circumferential seal with the inner wall of the passage pipe, resulting in uniform pressure without stress concentration. The rotational opening and closing process is free of axial impact, preventing wear on the sealing surface and extending service life. The flow rate between the first flow channel 4 and the first passage pipe 62 is controlled by varying the height of the bucket assembly. This inverted bucket lever-operated stopcock steam trap solves the problem of inconsistent condensate flow rates in traditional steam traps.

[0017] like Figures 1-2 As shown, in one embodiment, the inverted bucket assembly 61 includes a first connecting arm 611 and a first inverted bucket 612; one end of the first connecting arm 611 is connected to the connecting block 63, and the other end of the first connecting arm 611 is provided with a hook, on which the first inverted bucket 612 is hung upside down; the first inverted bucket 612 is positioned close to the inner surface of the valve body 1. Thus, by keeping the first inverted bucket 612 close to the inner surface of the valve body 1, the first inverted bucket 612 is prevented from detaching from the hook.

[0018] like Figure 3 As shown, in one embodiment, the top of the first inverted bucket 612 is provided with a first through hole 9.

[0019] like Figure 3 As shown, in one embodiment, the second conduit 8 includes a first conduit portion 81 and a second conduit portion 82 with an arc-shaped outer contour. The first conduit portion 81 is arranged vertically, one end of the first conduit portion 81 is connected to the first flow channel 4, the other end of the first conduit portion 81 is connected to one end of the second conduit portion 82, and the other end of the second conduit portion 82 extends into the first inverted bucket 612.

[0020] Working principle: 1. Start-up and initial drainage status (valve open): When equipment (such as steam pipes, heat exchangers) is first started, or when there is a large amount of condensate / non-condensable gas (such as air) in the system, these fluids enter through the first flow channel 4 on the valve cover 2.

[0021] Condensate / non-condensable gas flows into the inverted first bucket 612 through the second pipe 8 (first pipe section 81 → second pipe section 82).

[0022] At this time, the first inverted bucket 612 is filled with heavy condensate and / or air, and its weight is greater than its buoyancy, so the first inverted bucket 612 is in a sinking state.

[0023] The first inverted bucket 612 sinks and pulls one end of the first connecting arm 611 downward through the hook.

[0024] The first connecting arm 611 acts as a lever, while its other end (connected to the connecting block 63) is pried upwards.

[0025] This upward prying motion causes the spherical connecting block 63 to rotate within the first conduit 62.

[0026] The rotation of the connecting block 63 aligns its internal first channel 7 with the flow path of the first through pipe 62 (i.e., the stopcock is in the "open" position).

[0027] At this time, condensate and air can smoothly enter the first pipe 62 from the first space 3 where the first inverted bucket 612 is located, through the first channel 7 of the opened connecting block 63, and then be discharged outside the valve through the second flow channel 5 connected to it. The valve is in the open drainage state.

[0028] 2. Steam enters and valve closes: As the condensate is gradually discharged, steam begins to enter the interior of the first inverted bucket 612 through the first flow channel 4 and the second through pipe 8.

[0029] Steam has a much lower density than condensate and therefore has a high buoyancy. After entering the first inverted bucket 612, the steam quickly accumulates at its top (because steam is lighter than condensate).

[0030] The buoyancy generated by the accumulated steam is greater than the weight of the first inverted bucket 612 and the residual condensate inside it.

[0031] Therefore, the first inverted bucket 612 began to rise.

[0032] The first inverted bucket 612, which floats upward, pushes one end of the first connecting arm 611 upward through the hook.

[0033] The connecting block 63 rotates to displace the first channel 7 inside it from the flow path of the first pipe 62 (i.e., the stopcock is in the "closed" position).

[0034] At this point, the passage between the first space 3 (valve chamber) and the second flow channel 5 (outlet) is closed, and steam cannot leak through the valve. The valve is in the closed state.

[0035] 3. Condensation and Restart Preparation: Although the valve is closed, the first inverted bucket 612 is not completely sealed. It has a first through-hole 9 at its top.

[0036] The steam that accumulates at the top of the first inverted bucket 612 will slowly diffuse through the first through hole 9 into the first space 3 (valve chamber) outside the first inverted bucket 612.

[0037] Meanwhile, the steam that diffuses into the valve cavity will come into contact with the lower temperature valve body 1 wall and gradually condense into water.

[0038] As steam inside the bucket continuously escapes through the through-hole and condenses, the amount of steam inside the first inverted bucket 612 decreases, the pressure decreases, and the buoyancy also decreases.

[0039] At the same time, new condensate continuously flows into the first inverted bucket 612 through the second pipe 8 (although the valve is closed, the inlet pressure will cause condensate to continuously enter and accumulate).

[0040] When the condensate in the bucket accumulates to a certain level, its weight once again exceeds the buoyancy generated by the residual steam in the bucket, the first inverted bucket 612 begins to sink again.

[0041] The sinking action pulls the first connecting arm 611 again, which in turn rotates the connecting block 63 to open the channel (returning to the state of step 1) and starts a new round of drainage cycle.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lever-operated stopcock drain valve for an inverted bucket, characterized in that, include: Valve body; A valve cover is disposed on the valve body, and a first space is formed between the valve body and the valve cover. The valve cover is provided with a first flow channel and a second flow channel that are both connected to the first space. A switch assembly is disposed within the first space. The switch assembly includes an inverted bucket assembly, a first through pipe, and a connecting block with a spherical outer contour. The connecting block is disposed within the first through pipe and has a first channel. One end of the inverted bucket assembly passes through the first through pipe and connects to the connecting block. The inverted bucket assembly and the first through pipe are rotatably connected. The inverted bucket assembly and the connecting block cooperate to control the communication state of the first through pipe. The first through pipe is connected to the second flow channel. The second pipe is located within the first space, with one end connected to the first flow channel and the other end extending into the inverted bucket assembly.

2. The inverted bucket lever stopcock drain valve according to claim 1, characterized in that, The inverted bucket assembly includes a first connecting arm and a first inverted bucket; one end of the first connecting arm is connected to the connecting block, and the other end of the first connecting arm is provided with a hook, and the first inverted bucket is hung upside down on the hook.

3. The inverted bucket lever stopcock drain valve according to claim 2, characterized in that, The first inverted bucket is positioned close to the inner surface of the valve body.

4. The inverted bucket lever stopcock drain valve according to claim 2, characterized in that, The top of the first inverted bucket is provided with a first through hole.

5. The inverted bucket lever stopcock drain valve according to claim 2, characterized in that, The second conduit includes a first conduit portion and a second conduit portion with an arc-shaped outer contour. The first conduit portion is arranged vertically. One end of the first conduit portion is connected to the first flow channel, and the other end of the first conduit portion is connected to one end of the second conduit portion. The other end of the second conduit portion extends into the first inverted bucket.

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