Negative pressure balancing device for automatic water drain

Abstract

The utility model discloses a negative pressure balance device for automatic water drainer, including connecting seat and sealing plug, connecting seat is the cylindrical of inside cavity, install on the lid of automatic water drainer top, and the top and bottom of connecting seat are equipped with first baffle and second baffle respectively, and a plurality of negative pressure balance holes are evenly arranged on first baffle and second baffle along circumference, and the central hole is set, and the upper portion of connecting rod is slidably connected in connecting seat through the through -hole and the top end of connecting seat and sealing plug fixed connection is stretched out, and the lower part of connecting rod is fixedly connected with float ball, and when float ball sinks, connecting rod goes down, and the bottom end of sealing plug is tightly connected with the top end of connecting seat and seals it. In the process of the up and down movement of connecting rod, connecting seat has the guiding effect to connecting rod, is favorable to keep the vertical movement of connecting rod, avoids the wobble of float ball in the process of rising and causes the deviation of connecting rod and further influences the effect of the upper top of sealing plug.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine gas extraction technology, specifically relating to a negative pressure balancing device for an automatic water drainer. Background Technology

[0002] In coal mine gas drainage systems, water accumulation in the gas drainage pipelines can cause significant discrepancies between measured and actual data, affecting measurement accuracy. It can also lead to improper negative pressure distribution in the gas drainage pipelines, impacting drainage efficiency and the pump's capacity; in severe cases, it can even damage the pump. Therefore, an automatic water drainer is needed to remove the water from the gas drainage pipelines.

[0003] The currently used automatic water drainer includes a tank with a cover at the top. A connecting pipe is fixed to the top of the cover, and a connecting rod is slidably connected inside the connecting pipe. A plug that seals the upper end of the connecting rod is fixed to the upper end of the connecting pipe, and a float is fixed to the lower end of the connecting rod. A negative pressure balance pipe is connected to the upper part of the tank, and a first one-way valve is installed on the negative pressure balance pipe. A water inlet pipe is connected to the lower part of the tank, and a second one-way valve is installed on the water inlet pipe. A water drain pipe is connected to the bottom of the tank, and a third one-way valve is installed on the water drain pipe. The negative pressure balance pipe is connected to the high point of the gas drainage pipeline, and the water inlet pipe is connected to the low point of the gas drainage pipeline.

[0004] The connecting pipe, connecting rod, float, and stopper constitute the negative pressure balancing device of the automatic water dispenser. It relies on the float's buoyancy to rise and open the stopper, allowing air to flow between the inside of the tank and the outside, thereby increasing the internal air pressure and enabling automatic water discharge. However, during the float's ascent, it is easily affected by water flow and may sway, making it difficult for the connecting rod to maintain a consistently vertical upward movement. Furthermore, severe swaying can cause the float to collide and be damaged, which is highly detrimental to the normal operation of the automatic water dispenser. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a negative pressure balancing device for an automatic water dispenser.

[0006] The technical solution adopted in this utility model is a negative pressure balancing device for an automatic water dispenser, including a connecting seat and a sealing plug. The connecting seat is a cylindrical shape with an internal cavity and is installed on the cover at the top of the automatic water dispenser. The top and bottom of the connecting seat are respectively provided with a first baffle and a second baffle. Several negative pressure balancing holes are evenly provided on the first and second baffles along the circumference. A through hole is opened in the center of the first and second baffles. The upper part of the connecting rod is slidably connected to the connecting seat through the through hole and the top end extends out of the connecting seat and is fixedly connected to the sealing plug. The lower part of the connecting rod is fixedly connected to a float. When the float sinks, the connecting rod moves down and the bottom end of the sealing plug is tightly connected to the top end of the connecting seat to seal it.

[0007] Furthermore, the aforementioned float is provided with a connecting hole, which passes through the center of the float and extends through both ends of the float. The lower part of the connecting rod passes through the connecting hole and extends through the float, and nuts are used to fasten the rod near the float at both ends.

[0008] Furthermore, a spring is fitted on the connecting rod above the float.

[0009] Furthermore, the thickness of the first baffle is 30-50mm, and the thickness of the second baffle is 5-10mm.

[0010] Furthermore, the top surface of the first baffle is concave arc-shaped, and the bottom end of the sealing plug is provided with an arc-shaped sealing part that matches the first baffle. Above the sealing part is a connecting part, which is cylindrical and its outer diameter is adapted to the inner diameter of the connecting seat.

[0011] Furthermore, the diameter of the aforementioned negative pressure balance hole is 8-12mm.

[0012] Furthermore, the sealing plug has a threaded hole in the center of its bottom, and the top of the connecting rod is threadedly connected to the sealing plug through the threaded hole.

[0013] Furthermore, the upper part of the aforementioned connecting seat protrudes outward to form a limiting part, and an external thread is provided below the limiting part in the middle of the connecting seat. The connecting seat is threadedly connected to the cover of the automatic water dispenser through the external thread.

[0014] Compared with the prior art, the beneficial effects of this utility model are that by setting through holes at the top and bottom of the connecting seat, the upper part of the connecting rod passes through the through holes and slides through the connecting seat to it. During the up and down movement of the connecting rod, the connecting seat has a guiding effect on the connecting rod, which helps to keep the connecting rod moving vertically and avoids the connecting rod shifting due to the swaying of the float during the rise, thus affecting the lifting effect on the sealing plug. At the same time, with the connecting rod and the float fixedly connected and the upper part of the connecting rod always vertical, the connecting rod has a restraining force on the float, preventing the float from shaking violently due to the water flow and thus causing collision damage. Attached Figure Description

[0015] Figure 1 A schematic diagram of the negative pressure balancing device for an automatic water dispenser;

[0016] Figure 2 This is a schematic diagram of the connector structure;

[0017] Figure 3 This is a sectional view of the connector.

[0018] Figure 4 This is a cross-sectional view of the sealing plug;

[0019] Figure 5 This is a top view of the first baffle.

[0020] Figure 6 This is a top view of the second baffle.

[0021] Figure 7 This is the main view of the link;

[0022] Figure 8 This is a cross-sectional view of the float.

[0023] Figure 9 This is a plan view of an automatic water dispenser. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0025] Example 1

[0026] like Figure 1-9 As shown, the negative pressure balancing device for an automatic water dispenser includes a connecting seat 1, a sealing plug 2, a first baffle 3, a second baffle 4, a connecting rod 5, and a float 6. The connecting seat 1, sealing plug 2, first baffle 3, and second baffle 4 are all made of stainless steel. The connecting seat 1 is a cylindrical shape with an internal cavity and is installed on the cover at the top of the automatic water dispenser. The top and bottom ends of the connecting seat 1 are respectively provided with a first baffle 3 and a second baffle 4. Several negative pressure balancing holes 7 are evenly distributed along the circumference of the first baffle 3 and the second baffle 4. In this embodiment, there are 6 negative pressure balancing holes 7. A through hole 8 is opened in the center of plate 4. The upper part of the connecting rod 5 passes through the through hole 8, passes through the first baffle 3 and the second baffle 4, and is slidably connected to the connecting seat 1. The top of the connecting rod 5 extends out of the connecting seat 1 and is fixedly connected to the sealing plug 2. The lower part of the connecting rod 5 is fixedly connected to the float 6. When the float 6 sinks, the connecting rod 5 moves down and pulls the sealing plug 2 down. The bottom end of the sealing plug 2 is tightly connected to the first baffle 3 at the top of the connecting seat 1 to seal the connecting seat 1. When the float 6 floats up, the connecting rod moves up and the connecting rod 5 pushes the sealing plug 2 upward. The external gas enters the tank through the negative pressure balance hole 7, which increases the internal pressure of the tank and realizes automatic water discharge. During the up-and-down movement of the connecting rod 5, the connecting seat 1 has a limiting and guiding function for the connecting rod 5, which helps to keep the connecting rod 5 moving vertically and avoids the floating ball 6 from shaking during its ascent, which would cause the connecting rod 5 to deviate and thus affect the lifting effect on the sealing plug 2. At the same time, with the connecting rod 5 and the floating ball 6 fixedly connected and the upper part of the connecting rod 5 always vertical, the connecting rod 5 has a restraining force on the floating ball 6, preventing the floating ball 6 from shaking violently due to the water flow and thus causing collision damage.

[0027] Furthermore, the float 6 has a connecting hole 601 inside, which passes through the center of the float and extends through both ends of the float 6. The lower part of the connecting rod 5 is externally threaded and passes through the connecting hole 601 through the float 6. Nuts are used to fasten the connecting rod 5 near the float 6 at both ends. The connecting rod 5 is designed to be a through-type connection to the float 6. When the upper part of the connecting rod 5 is restricted in movement, the constraint effect of the connecting rod 5 on the float 6 is improved, and the damage frequency of the float 6 during use is greatly reduced. In order to prevent the float 6 from colliding with the connecting seat after rising, a spring is sleeved on the connecting rod 5 above the float 6.

[0028] The connecting seat 1 has a length of at least 70mm, the first baffle 3 has a thickness of 30mm, and the second baffle has a thickness of 5mm. This ensures that the through hole on the first baffle 3 and the distance between the first baffle and the second baffle have sufficient length to limit the vertical movement of the connecting rod 5, so that the connecting rod 5 always maintains vertical movement.

[0029] The top surface of the first baffle 3 is concave and arc-shaped. The bottom end of the sealing plug 2 matches the first baffle and has an arc-shaped sealing part 201. Above the sealing part 201 is a connecting part 202, which is cylindrical and its outer diameter matches the inner diameter of the connecting seat 1. When the sealing plug 2 contacts the connecting seat 1, the sealing part 201 is embedded in the top of the first baffle 3. The connecting part 202 has a certain gravity to keep the sealing plug stable, which helps to seal the negative pressure balance hole 7 on the first baffle 3 and maintain the negative pressure inside the tank of the automatic water dispenser.

[0030] Because the tank of the automatic water dispenser is under negative pressure, it generates a certain suction force on the sealing plug 2. That is, the sealing plug 2 creates resistance to the float 6. The larger the diameter of the negative pressure balance hole 7, the greater the resistance to the float 6, which increases the required water level for the float 6 to float and poses a risk of submerging the negative pressure balance pipe. Therefore, the diameter of the negative pressure balance hole 7 should not exceed 12mm. Also, since the tank is connected to the outside through the negative pressure balance hole 7 of the connecting seat 1, the diameter of the negative pressure balance hole 7 should not be less than 8mm to ensure normal water discharge.

[0031] To facilitate the replacement of parts, the bottom center of the sealing plug 2 is provided with a threaded hole 203, and the top of the connecting rod 5 is threadedly connected to the sealing plug 2 through the threaded hole 203.

[0032] The upper part of the connecting seat 1 protrudes outward to form a limiting part 101. The lower part of the limiting part 101 is provided with an external thread 102 in the middle of the connecting seat. A limiting plate 103 is provided between the limiting part 101 and the external thread to facilitate the accurate connection position with the automatic water dispenser cover. The connecting seat 1 is threadedly connected to the cover of the automatic water dispenser through the external thread 102.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. A negative pressure equalizing device for an automatic water drain, characterized in that, The device includes a connecting seat (1) and a sealing plug (2). The connecting seat (1) is a cylindrical shape with an internal cavity and is installed on the cover at the top of the automatic water dispenser. The top and bottom of the connecting seat (1) are respectively provided with a first baffle (3) and a second baffle (4). The first baffle (3) and the second baffle (4) are evenly provided with several negative pressure balance holes (7) along the circumference and a through hole (8) is opened in the center. The upper part of the connecting rod (5) passes through the through hole (8) and slides through the first baffle (3) and the second baffle (4) and is slidably connected to the connecting seat (1). The top end extends out of the connecting seat (1) and is fixedly connected to the sealing plug (2). The lower part of the connecting rod (5) is fixedly connected to the float (6). When the float (6) sinks, the connecting rod (5) moves down and the bottom end of the sealing plug (2) is tightly connected to the top end of the connecting seat (1) to seal it.

2. The negative pressure equalizing device for an automatic water drain according to claim 1, characterized by, The float (6) has a connecting hole (601) inside. The connecting hole (601) passes through the center of the ball and both ends pass through the float (6). The lower part of the connecting rod (5) passes through the connecting hole (601) and the two ends are fastened with nuts near the float (6).

3. The negative pressure equalizing device for an automatic water drain according to claim 2, characterized by, A spring is fitted on the connecting rod (5) above the float (6).

4. The negative pressure equalizing device for an automatic water drain according to claim 1, wherein The thickness of the first baffle (3) is 30-50mm, and the thickness of the second baffle (4) is 5-10mm.

5. The negative pressure balancing device for an automatic water dispenser according to claim 1, characterized in that, The top surface of the first baffle (3) is concave arc shape, and the bottom end of the sealing plug (2) matches the first baffle (3) and is provided with an arc-shaped sealing part (201). Above the sealing part (201) is a connecting part (202), which is cylindrical and its outer diameter is adapted to the inner diameter of the connecting seat (1).

6. The negative pressure balancing device for an automatic water dispenser according to claim 1, characterized in that, The diameter of the negative pressure balance hole is 8-12mm.

7. The negative pressure balancing device for an automatic water dispenser according to claim 1, characterized in that, The sealing plug (2) has a threaded hole (203) in the center of its bottom, and the top of the connecting rod (5) is threadedly connected to the sealing plug (2) through the threaded hole (203).

8. The negative pressure balancing device for an automatic water dispenser according to claim 1, characterized in that, The upper part of the connecting seat (1) protrudes outward to form a limiting part (101), and the lower part of the limiting part (101) is provided with an external thread (103) in the middle of the connecting seat (1). The connecting seat (1) is threadedly connected to the cover of the automatic water dispenser through the external thread (103).

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