CN204553866U - The clear tank arrangement of a kind of slurry tank - Google Patents

Abstract

The utility model relates to a mud tank clearing device, which includes a tank bottom valve, characterized in that the tank bottom valve includes a sealing disc, a sealing seat, a shell and a lifting mechanism, and the lifting mechanism includes a hand wheel, a lifting shaft, The lifting rod and the connection are shorted, the housing is provided with a liquid inlet hole, the sealing seat is fixed at the bottom end of the housing, and the lower end of the connection short is fixedly connected with the upper part of the housing, so The lifting rod is inserted into the housing, the lower end of the lifting rod is connected to the sealing plate through a cardan shaft, and the upper end extends into the connecting short. The upper end of the lifting rod is provided with a lifting nut. The sealing disc is crimped to the sealing seat, the lifting shaft is provided with external threads, the lifting shaft is installed in the connecting short through a bearing, the upper end of the lifting shaft is connected to the handwheel, and the lower end is It is threadedly connected with the lifting nut. The beneficial effect is that the sealing of the tank bottom valve is more reliable, the operation is convenient, and zero pollution is guaranteed.

Description

A mud tank cleaning device

technical field

The utility model relates to the field of oilfield equipment, in particular to a mud tank cleaning device.

Background technique

In oil extraction, the mud circulation system usually consists of drilling fluid circulation tanks, solids control equipment, manifold valves, etc. In China, early drilling crews usually dug and buried the drilling fluid on the spot after drilling and completion, and some drilling crews even directly discharged the mud in the circulating tank to the ground, which caused great pollution to the environment. With the increasing awareness of environmental protection in the world, the previous practice of the well team is no longer allowed. The mud waste liquid after drilling and completion needs to be collected and then treated in a centralized manner. It can only be discharged after meeting the national emission standards. The current collection method is mainly to discharge the mud waste liquid out of the tank through the sand cleaning door or butterfly valve at the bottom of the tank side, and flow into the mud pit through the ground groove. In this process, there are two problems. One is that the sealing effect of the sand cleaning door or the butterfly valve is not good, and it is easy to leak; the other is that the waste liquid is easy to splash during the collection process, and it will also cause some pollution to the environment through the ground groove. Less than zero pollution. To achieve zero pollution, there must be reliable sealing valves, and the discharged waste liquid cannot contact the ground.

Utility model content

The utility model aims at the deficiencies of the above-mentioned prior art, and provides a mud tank clearing device with convenient operation and reliable operation.

The technical scheme of the utility model for solving the above-mentioned technical problems is as follows: a mud tank clearing device, including a tank bottom valve, characterized in that the tank bottom valve includes a sealing disc, a sealing seat, a housing and a lifting mechanism, and the lifting The mechanism includes a hand wheel, a lifting shaft, a lifting rod and a connecting short. The housing is provided with a liquid inlet hole. The sealing seat is fixed at the bottom of the housing. The lower end of the connecting short is connected to the The upper part of the housing is fixedly connected, the lifting rod is inserted into the housing, the lower end of the lifting rod is connected to the sealing disk shown by a cardan shaft, and the upper end extends into the connecting short, and the lifting rod The upper end of the upper end is provided with a lifting nut, the sealing disk is crimped to the sealing seat, the lifting shaft is provided with an external thread, the lifting shaft is installed in the connecting short through a bearing, and the lifting shaft The upper end is connected with the handwheel, and the lower end is threaded with the lifting nut.

The beneficial effect of the utility model is that the sealing plate and the sealing seat adopt a spherical sealing form to ensure a more reliable sealing of the tank bottom valve; it is easy to operate, and only needs to turn the handwheel on the tank top, which also plays a good role in the environment. Protective effect, to achieve zero pollution.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, the upper end of the housing is provided with a connecting flange, and the lower end of the connecting short is fixedly connected to the upper part of the housing through the connecting flange.

The beneficial effect of adopting the above further solution is to make the connection more convenient and fast.

Further, it also includes a flow channel arranged under the sealing seat, and the flow channel includes a discharge manifold.

The beneficial effect of adopting the above further solution is that it is convenient to recycle waste materials.

Further, the contact surface between the sealing disk and the sealing seat is a spherical surface.

The beneficial effect of adopting the above further solution is that it has good sealing performance when closed.

Description of drawings

Fig. 1 is a schematic diagram of the closed state structure of the utility model;

Fig. 2 is a schematic diagram of the opening state of the utility model in the mud circulation tank;

Fig. 3 is an enlarged schematic view of the sealing disc of the present invention.

Fig. 4 is a schematic diagram of the cardan shaft of the present invention.

In Fig. 1 to Fig. 4, 1, hand wheel; 2, bearing; 3, bearing seat; 4, connecting short circuit; 5, lifting shaft; 6, lifting nut; 7, lifting rod; 8, cardan shaft; 9 1, sealing plate; 10, sealing seat; 11, flow channel; 12, discharge manifold; 13, mud circulation tank; 14, sewage; 15, liquid inlet hole; 16, shell.

detailed description

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figures 1 to 4, a mud tank cleaning device includes a tank bottom valve, the tank bottom valve includes a sealing disc 9, a sealing seat 10, a housing 16 and a lifting mechanism, and the lifting mechanism includes a hand wheel 1. The lifting shaft 5, the lifting rod 7 and the connecting short 4, the housing is provided with a liquid inlet 15, the sealing seat 10 is fixed at the bottom of the housing, and the lower end of the connecting short 4 It is fixedly connected with the upper part of the housing, the lifting rod 7 is inserted into the housing, the lower end of the lifting rod is connected with the sealing disc 9 through the cardan shaft 8, and the upper end extends to the connecting short-circuit 4, the upper end of the lifting rod 7 is provided with a lifting nut 6, the sealing disc 9 is crimped to the sealing seat, the lifting shaft is installed in the connecting short 4 through a bearing, and the lifting shaft The upper end is connected with the hand wheel, and the lower end is threaded with the lifting nut 6 . The hand wheel 1 is connected with the connecting short 4 through the bearing 2 and the bearing seat 3 .

The upper end of the housing is provided with a connecting flange, and the lower end of the connecting short 4 is fixedly connected to the upper part of the housing through the connecting flange.

It also includes a flow channel 11 arranged under the sealing seat, and the flow channel includes a discharge manifold 12 .

The contact surface between the sealing disk 9 and the sealing seat 10 is a spherical surface.

When the utility model is in use, by manually rotating the hand wheel 1, the lifting nut 6 rises along the lifting shaft, and the lifting rod 7 and all the follower parts at the bottom can be lifted or lowered, so that the sealing disc 9 and the sealing seat 10 are relatively Movement, so as to realize the opening or closing of the bottom valve of the tank. The outer surface of the novel tank bottom valve sealing disc 9 is a spherical structure, the main material is a steel body, the bottom surface and the outer ring are wrapped with a layer of rubber, connected by adhesives, and tightened by bolts. The sealing surface of the sealing seat 10 is a spherical structure, and their sealing form is similar to that of a pipeline D-type joint. Even if the sealing disk 9 and the sealing seat 10 are eccentric, the cardan shaft 8 can adjust the eccentricity to ensure that the sealing disk 9 is vertically downward. Even if the center line of the sealing disk 9 and the sealing seat 10 do not coincide, the spherical sealing can ensure the reliability of the sealing.

The mud tank cleaning device is fixed on the sewage outlet of the mud circulation tank 13 through the sealing seat 10. When the tank bottom valve is opened, the sewage 14 and dregs in the tank flow through the flow channel 11, flow into the discharge manifold 12, and pass through the collecting pipe. Finally arrive at the centralized collection place for centralized processing.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. A tank clearing device for a mud tank, comprising a tank bottom valve, characterized in that the tank bottom valve comprises a sealing disc, a sealing seat, a housing and a lifting mechanism, and the lifting mechanism comprises a hand wheel, a lifting shaft, a lifting rod and connection short circuit, the housing is provided with a liquid inlet hole, the sealing seat is fixed on the bottom end of the housing, the lower end of the connection short circuit is fixedly connected to the upper part of the housing, the lifting The rod is inserted into the housing, the lower end of the lifting rod is connected to the sealing plate through a cardan shaft, and the upper end extends into the connecting short. The upper end of the lifting rod is provided with a lifting nut. The disk is crimped to the sealing seat, the lifting shaft is provided with external threads, the lifting shaft is installed in the connecting short through the bearing, the upper end of the lifting shaft is connected to the handwheel, and the lower end is connected to the The lift nuts are threaded. 2. The mud tank cleaning device according to claim 1, characterized in that, the upper end of the housing is provided with a connecting flange, and the lower end of the connecting short-circuit and the upper part of the housing pass through the connecting flange Fixed connection. 3 . The mud tank cleaning device according to claim 1 or 2 , further comprising a flow passage provided under the sealing seat, and the flow passage includes a discharge manifold. 4 . 4. The mud tank cleaning device according to claim 1 or 2, characterized in that, the contact surface between the sealing disc and the sealing seat is a spherical surface.