Automatic drainage device of instrument air buffer tank

Abstract

The utility model discloses an automatic drainage device of an instrument air buffer tank, and particularly relates to the field of drainage structures of instrument air buffer tanks. The drainage mechanism comprises a sight glass structure, a stop valve and a drainage line, the drainage line is used for communicating the buffer tank and the collection pool, and the sight glass structure is installed on the drainage line; the sight glass structure comprises a connector, a ferrule, a transparent pipe, a resistance wire and a transmission part, the connector is installed in the drainage line, the transparent pipe is fixed to the connector, the ferrule is elastically and rotationally connected to the connector, the resistance wire located on the outer side of the transparent pipe is fixedly connected with the ferrule, and the resistance wire is electrically connected with the mains supply. The transmission part is used for driving the ferrule to rotate on the connector under the driving of torque, the steam trap is additionally arranged in the drainage line, the on-off condition of the drainage line is automatically controlled, then the resistance wire can rotate on the transparent pipe by changing the structure of the sight glass structure, the sight glass structure gives consideration to visibility and heat uniform distribution in the using process, and therefore the safety of the drainage line is improved. The practicability of the sight glass structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of drainage structures of instrument air buffer tanks. More specifically, the utility model relates to an automatic drainage device for an instrument air buffer tank. Background Art

[0002] The instrument air buffer tank is located on the outlet pipeline of the air compressor and is a temporary storage and buffer tank for instrument air. After the air is pressurized and compressed by the air compressor, it first enters the instrument air buffer tank. Some of the moisture contained in the instrument air will deposit at the bottom of the instrument air buffer tank, and the water needs to be drained in time.

[0003] During the drainage process, a sight glass is generally added to the drainage line to observe the drainage situation. In order to reduce the fogging of the inner wall of the sight glass, users generally add a heating device around the sight glass to reduce the fogging probability by maintaining the temperature consistency between the inner and outer walls of the sight glass.

[0004] The heating device cannot balance visibility and heating uniformity during use, so the existing heating device still needs to be improved. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an automatic drainage device for an instrument air buffer tank. The technical problem to be solved by the utility model is: how to solve the problem that the existing heating device cannot balance visibility and heating uniformity during use.

[0006] To achieve the above object, the utility model provides the following technical solution: an automatic drainage device for an instrument air buffer tank, including a buffer tank; a drainage mechanism, including a sight glass structure, a cut-off valve and a drainage line, the drainage line is used to connect the buffer tank and the collection pool, and the sight glass structure is installed on the drainage line; wherein, the sight glass structure includes a joint, a ferrule, a transparent tube, a resistance wire and a transmission member, the joint is installed in the drainage line, the transparent tube is fixed to the joint, the ferrule is elastically rotatably connected to the joint and is located outside the transparent tube, the resistance wire is fixedly connected to the ferrule, the resistance wire is electrically connected to the mains electricity, and the transmission member is used to drive the ferrule to rotate on the joint under the drive of torque.

[0007] In a preferred embodiment, the transmission member includes a transmission wheel, a ratchet unit, a bevel gear one and a bevel gear two. The transmission wheel is rotatably connected to the joint. The transmission wheel and the bevel gear one rotate synchronously in a single rotation direction through the ratchet unit. The bevel gear one and the bevel gear two are in meshing transmission, and the bevel gear two is fixedly connected to the ferrule.

[0008] In a preferred embodiment, the ratchet unit includes a connecting rod one, a ratchet, a connecting rod two and a pawl. The transmission wheel, the connecting rod one and the ratchet are fixedly connected. The connecting rod two is fixedly connected to the bevel gear one. The pawl is elastically hinged inside the connecting rod two, and the ratchet and the pawl interfere with each other.

[0009] In a preferred embodiment, a cut-off valve is installed on the drain line. The cut-off valve includes a valve body and a handle. The valve body is used to connect the drain line and the joint. The handle is rotatably connected to the valve body and is used to control the on-off state of the valve body. The drive wheel and the handle are connected by a belt drive.

[0010] In a preferred embodiment, a steam trap is installed inside the drain line, and the steam trap is located downstream of the sight glass structure.

[0011] In a preferred embodiment, auxiliary line valves are connected in parallel on both sides of the steam trap.

[0012] The technical effects and advantages of the present utility model are as follows:

[0013] By adding a steam trap inside the drain line, the on-off state of the drain line can be automatically controlled. By changing the structure of the sight glass structure, the resistance wire can rotate on the transparent tube, enabling the sight glass structure to take into account visibility and heat distribution uniformity during use, thereby improving the practicality of the sight glass structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the technical solutions of the present utility model, and form a part of the present utility model. The embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0015] Figure 1 It is a structural diagram of the automatic drain device of the instrument air buffer tank of the present utility model.

[0016] Figure 2 It is a perspective view of the sight glass structure of the present utility model.

[0017] Figure 3 It is a structural diagram of the sight glass structure of the present utility model.

[0018] Figure 4 It is a simplified structural diagram of the transmission member of the present utility model.

[0019] Figure 5 It is a structural diagram of the ratchet unit of the present utility model.

[0020] Figure 6 It is a top view of the ratchet unit of the present utility model.

[0021] The reference numerals in the drawings are: 1, steam trap; 2, sight glass structure; 21, joint; 22, ferrule; 23, transparent tube; 24, resistance wire; 25, transmission member; 251, drive wheel; 252, ratchet unit; 2521, first connecting rod; 2522, ratchet; 2523, second connecting rod; 2524, pawl; 253, first bevel gear; 254, second bevel gear; 3, cut-off valve; 31, valve body; 32, handle; 4, drain line; 5, auxiliary line valve. Detailed Implementation Modes

[0022] Example implementation modes will now be described more fully with reference to the accompanying drawings. However, the example implementation modes can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these example implementation modes are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example implementation modes to those skilled in the art. The accompanying drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

[0023] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more example implementation modes. In the following description, numerous specific details are provided to give a thorough understanding of the example implementation modes of the present disclosure. However, those skilled in the art will realize that one or more of the specific details can be omitted in practicing the technical solutions of the present disclosure, or other methods, components, steps, etc. can be adopted. In other cases, well-known structures, methods, implementations, or operations are not shown or described in detail so as not to obscure the various aspects of the present disclosure.

[0024] In actual situations, if the accumulated water in the instrument air buffer tank is not drained in time, a series of hazards will occur. This is mainly due to the condensed water formed by the moisture in the compressed air after cooling. The hazards involved include but are not limited to:

[0025] The presence of moisture will accelerate the oxidation and corrosion of metal components, shorten the service life of the equipment, and increase the maintenance cost.

[0026] The condensed water will occupy the volume of the buffer tank, reducing the amount of compressed air effectively stored, thereby reducing the efficiency of the system.

[0027] The moisture may enter pneumatic devices such as valves, actuators, and sensors, resulting in a decline in the performance of these precision instruments and even damage.

[0028] The moisture will affect the dryness of the compressed air and reduce its quality, which will have an adverse impact on applications that require dry air, such as painting, pneumatic tools, medical equipment, etc.

[0029] Therefore, in view of the above hazards, the present application solves the above problems by designing the following structure.

[0030] Example 1

[0031] As Figure 1, An automatic drainage device for an instrument air buffer tank, mainly including a steam trap 1, a sight glass structure 2, a shut-off valve 3, a drainage line 4, and a bypass valve 5, aiming to utilize automatic control to drain water and solve the problem of inaccurate timing of manual drainage.

[0032] Both ends of the drainage line 4 are connected to the bottom of the buffer tank and the collection pool respectively, and are used to drain the water in the buffer tank to the collection pool.

[0033] The shut-off valve 3 is connected to the drainage line 4 and is used to control the on-off situation of the drainage line 4.

[0034] The sight glass structure 2 is connected to the drainage line 4 and is used to facilitate the user to observe the drainage situation of the water in the drainage line 4.

[0035] The steam trap 1 is connected to the drainage line 4 and is used to automatically drain water from the drainage line 4 while minimizing gas loss. The working principle of the steam trap 1: The drainage line 4 can sense the presence of condensed water and automatically open to let the water flow out, and when there is no water, it will automatically close. The steam trap 1 works by detecting the density or temperature difference between the liquid and the gas to ensure that only water is drained without excessive air loss.

[0036] The bypass valve 5 is connected in parallel at both ends of the steam trap 1 and is used to detect the integrity of the steam trap 1.

[0037] Through the above design, the automatic on-off control of the entire flow path of the drainage line 4 can be realized through the additionally added steam trap 1, solving the drainage problem of the instrument air buffer tank. It can not only achieve the purpose of automatic drainage of the buffer tank, but also drain the water completely, prevent misoperation by personnel, and ensure the normal dew point temperature of the instrument air. Thus, it ensures the normal pressure of the instrument air pipeline and protects the normal operation of the air compressor equipment.

[0038] Furthermore, a local and remote level gauge can also be installed on the instrument air buffer tank, and a high-level alarm can be set to remind the operator to drain the instrument air buffer tank in time. Since it is a prior art, it will not be elaborated here.

[0039] Embodiment 2

[0040] Such as Figure 2 - Figure 6 , On the basis of Embodiment 1, by setting and changing the specific internal structure of the sight glass structure 2, the permeability of observing the water in the drainage line 4 through the sight glass structure 2 is improved.

[0041] Generally speaking, the shut-off valve 3 in this embodiment is a manual or a structure with a rotatable opening member. The shut-off valve 3 includes a valve body 31 and a handle 32.

[0042] The sight glass structure 2 includes a connector 21, a ferrule 22, a transparent tube 23, a heating wire 24, and a transmission member 25. The connector 21 is threadedly connected to the output end of the valve body 31. The transparent tube 23 is fixed to the connector 21. The ferrule 22 is elastically and dampingly rotatably connected to the connector 21. The heating wire 24 is fixed to the ferrule 22, and the heating wire 24 is electrically connected to the mains through a wire. When the current is switched on, the heating wire 24 is energized to generate heat. When the handle 32 rotates, it can drive the ferrule 22 and the heating wire 24 to rotate around the outside of the transparent tube 23 through the transmission member 25, so that the heat is evenly distributed on the outside of the transparent tube 23. The space exposed between the two heating wires 24 allows the user to observe the moisture condition inside the transparent tube 23 through the transparent tube 23.

[0043] Specifically, the transmission member 25 includes a transmission wheel 251, a ratchet unit 252, a first bevel gear 253, and a second bevel gear 254. The transmission wheel 251 can rotate synchronously in a single direction through the ratchet unit 252 and the first bevel gear 253. The first bevel gear 253 and the second bevel gear 254 are in meshing transmission, and the second bevel gear 254 is fixedly connected to the ferrule 22.

[0044] Further, the ratchet unit 252 includes a first connecting rod 2521, a ratchet 2522, a second connecting rod 2523, and a pawl 2524. The first connecting rod 2521 is fixedly connected to the transmission wheel 251. The transmission wheel 251 and the handle 32 are connected by a belt drive. The ratchet 2522 is fixedly connected to the first connecting rod 2521. The pawl 2524 is elastically hinged inside the second connecting rod 2523. A one-way rotation structure of the ratchet group is formed between the ratchet 2522 and the pawl 2524. When in use, when the user rotates the handle 32 to open the valve body 31, the first connecting rod 2521 rotates synchronously with the handle 32. Interference occurs between the ratchet 2522 and the pawl 2524 to drive the second connecting rod 2523 to drive the first bevel gear 253 to rotate, so that the heating wire 24 can rotate on the outside of the transparent tube 23. When the user stops rotating the handle 32, the damping and elastic rotational connection characteristic between the ferrule 22 and the connector 21 will perform a slow reset rotation under the drive of the elastic force, thereby driving the heating wire 24 to rotate in the reverse direction on the transparent tube 23.

[0045] Furthermore, the tooth number ratio of the first bevel gear 253 and the second bevel gear 254 is not 1. When the first bevel gear 253 rotates one circle, the number of rotations of the second bevel gear 254 is greater than one circle, so that the ferrule 22 can drive the heating wire 24 to rotate more circles.

[0046] The working principle of the present utility model:

[0047] By adding a steam trap 1 into the drain line 4, the on-off situation of the drain line 4 is automatically controlled. Then, by changing the structure of the sight glass structure 2, the heating wire 24 can rotate on the transparent tube 23, so that the sight glass structure 2 takes into account visibility and heat even distribution during use, thereby improving the practicability of the sight glass structure 2.

[0048] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

[0049] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change.

[0050] Second: In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0051] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic drainage device for an instrument air buffer tank, characterized in that include: Buffer tank; A drainage mechanism comprises a sight glass structure (2), a cut-off valve (3) and a drainage line (4), wherein the drainage line (4) is used to connect the buffer tank and the collection tank, and the sight glass structure (2) is installed on the drainage line (4); The viewing mirror structure (2) comprises a joint (21), a ferrule (22), a transparent tube (23), a resistance wire (24) and a transmission member (25); the joint (21) is installed in the drainage line (4); the transparent tube (23) and the joint (21) are fixed; the ferrule (22) is elastically rotatably connected to the joint (21); the resistance wire (24) located outside the transparent tube (23) is fixedly connected to the ferrule (22); the resistance wire (24) is electrically connected to the mains; and the transmission member (25) is used to drive the ferrule (22) to rotate on the joint (21) under the drive of torque.

2. The automatic drainage device for an instrument air buffer tank according to claim 1, characterized in that: The transmission member (25) comprises a transmission wheel (251), a ratchet unit (252), a bevel gear one (253) and a bevel gear two (254); the transmission wheel (251) is rotatably connected to the joint (21); the transmission wheel (251) rotates synchronously in a single-side rotation direction through the ratchet unit (252) and the bevel gear one (253); the bevel gear one (253) and the bevel gear two (254) are meshed for transmission; and the bevel gear two (254) and the ring (22) are fixedly connected.

3. The automatic drainage device for an instrument air buffer tank according to claim 2, characterized in that: The ratchet unit (252) comprises a connecting rod 1 (2521), a ratchet wheel (2522), a connecting rod 2 (2523) and a pawl (2524); the transmission wheel (251), the connecting rod 1 (2521) and the ratchet wheel (2522) are fixedly connected; the connecting rod 2 (2523) and the bevel gear 1 (253) are fixedly connected; the pawl (2524) is elastically hinged in the connecting rod 2 (2523); and the ratchet wheel (2522) and the pawl (2524) interfere with each other.

4. The automatic drainage device for an instrument air buffer tank according to claim 3 is characterized in that: The drain line (4) is provided with a shut-off valve (3), the shut-off valve (3) comprising a valve body (31) and a handle (32), the valve body (31) being used to connect the drain line (4) and the joint (21), the handle (32) being rotatably connected to the valve body (31) and being used to control the on and off of the valve body (31), and the transmission wheel (251) and the handle (32) being connected via a belt drive.

5. The automatic drainage device for an instrument air buffer tank according to claim 1 is characterized in that: A steam trap (1) is installed in the drainage line (4), and the steam trap (1) is located downstream of the sight glass structure (2).

6. The automatic drainage device for an instrument air buffer tank according to claim 5, characterized in that: Sub-line valves (5) are connected in parallel on both sides of the steam trap (1).

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