Inverted spraying under-pressure dredger

Abstract

The utility model relates to the technical field of maintenance tools, in particular to an inverted spraying under-pressure dredger which comprises a screw rod, a pipe cap matched with an inverted spraying pipe orifice is sleeved on the screw rod, the pipe cap is fixedly connected with a nut, the nut is in threaded connection with the screw rod, and the nut drives the pipe cap to perform linear displacement relative to the screw rod. One end of the screw rod is fixedly connected with a hollow pipe which is coaxial with the screw rod, the hollow pipe is used for being inserted into a shower guiding pipe opening and abutting against a valve element of the inverted shower hand valve, and an exhaust groove is formed in the hollow pipe. The dredging device disclosed by the utility model can dredge the guide shower under pressure, and blockages in the guide shower are temporarily stored in the hollow pipe and are drawn out along with the dredging device, so that the blockages are prevented from being sprayed out during dredging, and the safety of operators is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tools, in particular to a backwash pressure dredging device. Background Art

[0002] Backflow blockage is a common problem in chemical production. If the pipeline contains high-temperature, high-pressure, flammable, or explosive media, it is very dangerous to clear the backflow under pressure. The commonly used method is to slightly open the valve and poke it inside with a thin wire. When the backflow is opened, the medium will spray out from the backflow, which can easily cause personal injury and environmental pollution. Summary of the Invention

[0003] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to provide a backwash pressure dredging device, which can dredge the backwash under pressure and ensure the safety of the operator.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a backwash pressure dredge, comprising a screw, a pipe cap adapted to the backwash pipe outlet is mounted on the screw, the pipe cap is fixedly connected to a nut, the nut is threadedly connected to the screw, the nut drives the pipe cap to perform linear displacement relative to the screw, one end of the screw is fixedly connected to a hollow tube coaxial with the screw, the hollow tube is used to be inserted into the shower pipe outlet, against the valve core of the backwash hand valve, and an exhaust groove is provided on the hollow tube.

[0005] Furthermore, the outer diameter of the hollow tube is larger than the diameter of the screw, and the nut is limited by the hollow tube to prevent the nut from separating from the screw.

[0006] Furthermore, the hollow tube is a metal hollow tube, which is welded to the screw rod; the hollow part in the hollow tube is used to buffer the blockage in the shower guide.

[0007] Furthermore, the pipe cap is marked with a pipe cap rotation warning line. After the pipe cap is tightened on the pouring pipe mouth, the pipe cap rotation warning line marks the circumferential position of the pipe cap to avoid the pipe cap and the screw from rotating synchronously when the screw is rotated.

[0008] Furthermore, the exhaust groove is opened along the axial direction of the hollow tube.

[0009] Furthermore, a center hole is opened on the cap cover at the bottom of the pipe cap, and the nut is welded and connected in the center hole.

[0010] Furthermore, a handle for rotating the screw is provided at one end of the screw away from the hollow tube.

[0011] Furthermore, the handle is welded to the screw.

[0012] Furthermore, the screw and hollow tube above the pipe cap are inserted into the drain pipe outlet, the hollow tube rests against the valve core of the back-drain hand valve, the pipe cap is screwed tightly to the outlet end of the drain pipe outlet, the back-drain hand valve is fully opened, the screw is rotated forward, the screw drives the hollow tube to push the valve core, the blockage in the drain pipe is squeezed into the hollow tube, and the air in the hollow tube is discharged from the exhaust groove. The screw is rotated in the reverse direction until the hollow tube is completely withdrawn from the back-drain hand valve, the back-drain hand valve is closed, and the pipe cap is rotated to pull out the dredge.

[0013] The beneficial effects of the utility model are as follows: the dredge of the utility model can dredge the drain under pressure, and buffer the blockage in the drain in the hollow tube, which is drawn out together with the dredge, so as to avoid the blockage from being sprayed out during dredging and ensure the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure: 1. Screw, 2. Cap, 3. Nut, 4. Hollow tube, 5. Handle, 6. Exhaust groove, 7. Cap rotation warning line. DETAILED DESCRIPTION

[0016] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] See also Figure 1 A backwash pressure dredge comprises a screw 1, which is fitted with a cap 2 adapted for the backwash pipe outlet. The cap 2 is screwed onto the outlet of the backwash pipe outlet. The cap 2 is fixedly connected to a nut 3, which is threaded onto the screw 1. The nut 3 drives the cap 2 to move linearly relative to the screw 1. One end of the screw 1 is welded to a hollow tube 4 coaxial with the screw. The outer diameter of the hollow tube 4 is smaller than the inner diameter of the backwash pipe outlet. The hollow tube 4 is inserted into the guide pipe outlet and presses against the valve core of the backwash hand valve. An exhaust groove 6 is provided on the hollow tube 4. The other end of the screw 1 is welded to a handle 5 for rotating the screw 1.

[0018] Furthermore, the outer diameter of the hollow tube 4 is larger than the diameter of the screw 1 , and the nut 3 is limited by the hollow tube 4 to prevent the nut 3 from separating from the screw 1 .

[0019] Furthermore, the hollow tube 4 is a metal hollow tube, which is welded to the screw 1; the hollow portion of the hollow tube 4 is used to buffer blockages in the showerhead.

[0020] Furthermore, the pipe cap 2 is marked with a pipe cap rotation warning line 7. After the pipe cap 2 is tightened on the pouring pipe mouth, the pipe cap rotation warning line 7 marks the circumferential position of the pipe cap to prevent the pipe cap 2 from rotating synchronously with the screw 1 when the screw 1 is rotated.

[0021] Furthermore, the exhaust groove 6 is opened along the axial direction of the hollow tube 4 to facilitate uniform exhaust of gas.

[0022] Furthermore, a center hole is opened on the cap cover at the bottom of the pipe cap 2, and the nut 3 is welded and connected in the center hole.

[0023] This embodiment of the dredge uses a flush-fitting pipe cap 2. A center hole larger than the outer diameter of the screw is drilled in the center of the cap 2. A nut 3, matching the screw 1, is welded to the center of the bottom of the cap 2. A handle 5 is welded to one end of the screw 1. After the nut 3 is inserted into the other end of the screw 1, a hollow metal tube 4 slightly larger than the screw's outer diameter is welded to the cap. A longitudinal venting slot 6 is cut in the metal hollow tube 4 near the weld, and a cap rotation warning line 7 is affixed to the side wall of the cap 2.

[0024] Directions:

[0025] 1. Rotate the pipe cap 2 to adjust the length of the screw exposed above the pipe cap to be less than the distance from the pouring pipe mouth to the valve, then insert the metal hollow tube 4 into the pouring pipe and tighten the pipe cap 2.

[0026] 2. Fully open the pour-over hand valve and rotate the dredge handle 5 so that the screw 1 drives the metal hollow tube 4 to push into the valve core. Continue to push upward, and the blockage in the shower guide is squeezed into the metal hollow tube 4. The air in the metal hollow tube 4 is discharged from the exhaust groove 6 until the metal hollow tube 4 is filled with the blockage.

[0027] 3. Rotate the handle 5 in the opposite direction and pay attention to the pipe cap rotation warning line 7. If you find that the pipe cap 2 is rotating, stop rotating the handle 5 and tighten the pipe cap 2 to prevent the screw 1 and the pipe cap 2 from being locked and rotating synchronously, so that the pipe cap 2 can be unscrewed from the screw mouth of the pouring pipe, and the medium in the pouring can be sprayed out and hurt people. Rotate the handle 5 until the metal hollow tube 4 is completely withdrawn from the pouring hand valve, and then close the pouring hand valve. Because the outer diameter of the metal hollow tube 4 is larger than the outer diameter of the screw 1, it acts as a limiter. When the handle 5 is rotated outward, the screw 1 will not be completely unscrewed from the nut 3, thereby preventing the medium in the pipeline from being sprayed out from the nut 3 and hurting the operator. After the pouring hand valve is completely closed, rotate the pipe cap 2 to pull out the drainpipe, slightly open the drain valve, and confirm whether the drain is open. If not, clear the blockage in the metal tube of the drainpipe and repeat the above steps until the drain is open.

[0028] It should be noted that the parts not described in detail in the present invention are prior art.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] The above examples are merely preferred embodiments of the present invention. Obviously, the present invention is not limited to the above examples and is subject to numerous variations. Any variations that can be directly derived or conceived by a person skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A pouring pressure dredge, characterized by: It includes a screw rod, on which a pipe cap adapted to the pouring pipe outlet is mounted, the pipe cap is fixedly connected to a nut, the nut is threadedly connected to the screw rod, the nut drives the pipe cap to perform linear displacement relative to the screw rod, one end of the screw rod is fixedly connected to a hollow tube coaxial with the screw rod, the hollow tube is used to be inserted into the pouring pipe outlet and against the valve core of the pouring hand valve, and an exhaust groove is provided on the hollow tube.

2. The pouring pressure dredge according to claim 1, characterized in that: The outer diameter of the hollow tube is greater than the diameter of the screw, and the nut is limited by the hollow tube to prevent the nut from separating from the screw.

3. The pouring pressure dredge according to claim 1, characterized in that: The hollow tube is a metal hollow tube, which is welded to the screw rod; the hollow part in the hollow tube is used to buffer the blockage in the shower guide.

4. The pouring pressure dredge according to claim 1, characterized in that: The pipe cap is marked with a pipe cap rotation warning line. After the pipe cap is tightened on the pouring pipe mouth, the pipe cap rotation warning line marks the circumferential position of the pipe cap to avoid the pipe cap and the screw rotating synchronously when the screw is rotated.

5. The pouring pressure dredge according to claim 1, characterized in that: The exhaust groove is opened along the axial direction of the hollow tube.

6. The pouring pressure dredge according to claim 1, characterized in that: A central hole is provided on the cap cover at the bottom of the pipe cap, and the nut is welded and connected in the central hole.

7. The pouring pressure dredge according to claim 1, characterized in that: A handle for rotating the screw is provided at one end of the screw away from the hollow tube.

8. The pouring pressure dredge according to claim 7, characterized in that: The handle is welded to the screw rod.

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