Sound insulation barrier for well site

Abstract

The utility model relates to the technical field of sound insulation barriers, and discloses a sound insulation barrier for a well site, which comprises a plurality of H-shaped steel upright posts which are distributed side by side at intervals, a plurality of sound insulation plates are longitudinally distributed between two adjacent H-shaped steel upright posts, and each sound insulation plate comprises a metal shell and a sound absorption material embedded in the metal shell. The U-shaped grooves of the adjacent H-shaped steel stand columns are oppositely arranged, and the ends of the sound insulation plates are embedded into the U-shaped grooves of the H-shaped steel stand columns. Openings are formed in the lower ends of the baffles of the H-shaped steel stand columns, movable baffles are arranged at the openings, the height of the openings is larger than or equal to the width of the sound insulation plates, and the sound insulation plates are placed in the opposite U-shaped grooves of the two adjacent H-shaped steel stand columns from the openings; according to the sound insulation barrier for the well site, the problem that a sound insulation plate of an existing metal sound insulation and absorption composite sound barrier needs to be installed in a climbing mode is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sound barrier technical field, concretely relates to a sound barrier for well site. BACKGROUND

[0002] Part of production equipment in the production process of well site produces certain noise influence to the surrounding environment, therefore, the surrounding of well site needs to install sound barrier to reduce noise pollution.

[0003] The metal sound barrier adopts steel plate cold pressure inner bending and is connected with the stand column to install, appearance is neat and beautiful, can realize complete isolation inside and outside.

[0004] The sound absorbing concrete has continuous, porous internal structure, part of incident sound waves is reflected, part is absorbed to the inside of the sound absorbing concrete through the communicating pore, the reflected sound waves are dispersed to the outside from the multi-hole sound absorbing concrete in the opposite direction again, and the noise reduction effect is obvious.

[0005] The metal sound absorbing composite sound barrier is composed of sound insulation board, sound absorbing cotton, stand column, connecting piece and the like.

[0006] But the sound insulation board in the metal sound absorbing composite sound barrier needs personnel to carry out climbing operation on the aerial platform truck, and the sound insulation board is installed on the stand column in the mode from top to bottom. In addition, the height of the stand column is generally about five meters and five, and the stand column needs to be hoisted by a crane, therefore, the on-site installation of the existing metal sound absorbing composite sound barrier needs to leave enough construction space for the crane and the aerial platform truck, and under the condition that the fracturing equipment has been installed in the well site construction site, the on-site space is limited, the crane and the aerial platform truck are difficult to enter the construction station, and the problem that the operation cannot be carried out exists. In addition, the operation cost of the crane and the aerial platform truck is high. The climbing operation needs full-time personnel, and a climbing certificate is needed. The climbing operation has high requirements for construction personnel, and the climbing operation also has certain safety hazards. Therefore, how to design a well site construction sound barrier capable of facilitating installation, reducing construction operation cost, not needing climbing operation and improving construction safety has become a problem to be solved at present. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a sound barrier for well site to solve at least one above-mentioned problem existing in the prior art.

[0008] In order to achieve the above object, the utility model adopts the following technical scheme:

[0009] A sound barrier for well site, comprising a plurality of H-shaped steel columns arranged side by side and spaced apart, a plurality of sound insulation boards are longitudinally arranged between two adjacent H-shaped steel columns, the sound insulation board comprises a metal shell and sound-absorbing material embedded in the metal shell, the U-shaped grooves of the adjacent H-shaped steel columns are oppositely arranged, and the end of the sound insulation board is embedded in the U-shaped groove of the H-shaped steel column.

[0010] In the technical scheme, the lower end of the baffle of the H-shaped steel column is provided with an opening, the height of the opening is greater than or equal to the width of the sound insulation board, and when installing, the opening facilitates the sound insulation board to be placed into the U-shaped grooves on both sides of the H-shaped steel column from the lower end of the H-shaped steel column, the U-shaped grooves on both sides of the H-shaped steel column form a lifting track, and the combination of the opening and the U-shaped groove facilitates the sound insulation board to be installed from bottom to top. Specifically, during installation, a bottom pad is arranged on the ground, the bottom pad is located between the two H-shaped steel columns, then a sound insulation board is placed into the U-shaped groove from the opening, the bottom pad supports the sound insulation board, the bottom pad can form a bottom lifting space below the sound insulation board, the lifting arm of the electric stacker truck is inserted into the bottom lifting space, then the sound insulation board is lifted by the lifting arm until the sound insulation board is lifted to a position higher than the opening, the next sound insulation board is placed from the opening, and an intermediate pad is arranged between the two sound insulation boards, so that a taking-out space is formed between the adjacent sound insulation boards for the lifting arm to take out, then the electric stacker truck moves, the lifting arm is taken out from the taking-out space, the intermediate pad is taken out (the intermediate pad can also be replaced by an air pad, which supports the pad by inflation, and after the lifting arm is taken out, the air pad is directly deflated, so that the intermediate pad does not need to be taken out, and the two sound insulation boards can be tightly connected), the lifting arm is inserted into the bottom lifting space of the next sound insulation board, then the lifting arm is lifted to lift the plurality of sound insulation boards until they are lifted to a position higher than the opening, and the above-mentioned repeated actions of placing the next sound insulation board from the opening, placing the intermediate pad, taking out the lifting arm, taking out the intermediate pad, and inserting the lifting arm into the bottom lifting space for continuous lifting are repeated, so that the sound insulation board can be installed from bottom to top. Since the opening is provided with a movable baffle, after the sound insulation board is installed, the opening can be closed by the movable baffle, the entire installation process of the sound insulation board does not need to use a climbing truck and does not need to be operated on a high place, so that the construction is convenient and fast, the construction cost is greatly reduced, and the construction safety is higher.

[0011] Further, in order to fix and install the column without the need of a crane, the H-shaped steel column comprises a lower support column and an upper support column, the lower end of the lower support column is fixed to the ground, a hinged structure and a fixed structure are arranged between the lower support column and the upper support column, the upper support column and the lower support column are rotationally connected through the hinged structure, and the upper support column and the lower support column are fixedly connected through the fixed structure.

[0012] During specific installation, a rope is tied to the upper end of the upper support column, the upper support column can be flipped upward until it is in a vertical state through pushing the upper support column on one side with a support rod and pulling the rope in cooperation with the arrangement of the hinged structure, and then the upper support column and the lower support column are fixed through the fixed structure.

[0013] Further, in order to facilitate on-site installation of the hinged structure, the hinged structure comprises a first hinge and a second hinge, the first hinge is installed at the upper end of the lower support column, the second hinge is installed at the lower end of the upper support column, and a bolt is inserted into the rotating part of the first hinge and the second hinge. The insertion timing of the bolt is when the upper support column needs to be installed.

[0014] Further, in order to maintain the preliminary stability of the upper support column and the lower support column, the inner side and the outer side of the lower support column and the upper support column are provided with the hinged structure.

[0015] Further, in order to facilitate the fixed installation of the upper support column and the lower support column, the fixed structure comprises a door-shaped plate, the hinged structure is located in the door-shaped space of the door-shaped plate, and the two ends of the door-shaped plate are respectively provided with extension plates, and the two extension plates are respectively fixedly connected with the lower support column and the upper support column.

[0016] Further, in order to facilitate construction work from the inner side of the barrier, the opening is arranged on the inner side baffle of the lower support column.

[0017] Further, in order to facilitate the connection of the rope, the upper end of the upper support column is provided with a connecting hole through which the rope passes.

[0018] Further, in order to provide stable support for the lower part of the barrier and facilitate the support point of the ground of different heights, the inner side and the outer side of the lower support column are respectively provided with lower inclined support rods, the lower inclined support rods comprise a first rod and a second rod, the first rod is fixedly connected with the upper end of the lower support column, the lower end of the second rod is fixedly connected with the ground, and a first right and left threaded adjusting structure is arranged between the first rod and the second rod.

[0019] Further, in order to provide stable support for the upper part of the barrier and facilitate the support point of the ground of different height, the outer side of the upper support column is provided with an upper inclined support rod, the upper inclined support rod comprises a third rod and a fourth rod, the third rod is fixedly connected with the middle part of the upper support column, the lower end of the fourth rod is fixedly connected with the ground, and the second positive and negative screw adjusting structure is arranged between the third rod and the fourth rod.

[0020] Further, the lower end of the movable baffle is rotationally connected with the lower end of the opening, and the upper end of the movable baffle is provided with a locking piece between the upper end of the opening. The movable baffle is provided in the opened state, and can be turned to a state of not shielding the opening, thereby facilitating the placement of the sound insulation board.

[0021] The utility model discloses the beneficial effect is: because the baffle lower end of H type steel stand is equipped with the opening, the height of opening is greater than or equal to the width of sound insulation board, when installing, the opening is convenient for the sound insulation board from the lower end of H type steel stand is put into the U groove of both sides of H type steel stand, and the U groove of both sides of H type steel stand forms the lifting track, and the combination of opening and U groove is convenient for the sound insulation board from below to above in turn installation. When installing specifically, first, set up the bottom pad on the ground, and the bottom pad is located between the two H type steel stand supports, then put a sound insulation board into the U groove from the opening, and the bottom pad supports the sound insulation board, and the bottom pad can form a bottom lifting space below the sound insulation board, so that the lifting arm of the electric stacker truck is inserted into the bottom lifting space, then the sound insulation board is lifted through the lifting arm until the sound insulation board is lifted to a position higher than the opening, and the next sound insulation board is put into the opening from the opening, and the intermediate pad is placed between the two sound insulation boards, so that the adjacent sound insulation boards form a taking-out space convenient for the lifting arm to take out, then the electric stacker truck moves, the lifting arm is taken out from the taking-out space, and the intermediate pad is taken out (the intermediate pad can also be replaced by an air pad, and the pad supporting effect is realized through inflation, after the lifting arm is taken out, the air pad is directly deflated, so that the air pad does not need to be taken out, and the close connection of the two sound insulation boards can also be realized), and the lifting arm is inserted into the bottom lifting space of the next sound insulation board, then the lifting arm is lifted, and the multiple sound insulation boards are lifted until the sound insulation boards are lifted to a position higher than the opening, and the above-mentioned repeated actions of putting the next sound insulation board into the opening, placing the intermediate pad, taking out the lifting arm, taking out the intermediate pad and inserting the lifting arm into the bottom lifting space for continuous lifting can realize the installation of the sound insulation board from below to above. Since the opening is provided with a movable baffle, after the sound insulation board is installed, the opening can be closed through the movable baffle, and the whole installation process of the sound insulation board does not need to use a climbing truck and does not need to perform a climbing operation, so that the construction is convenient and fast, the construction cost is greatly reduced, and the construction safety is higher. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the utility model;

[0023] Figure 2 for Figure 1 partial enlarged structural schematic view of A in the middle;

[0024] Figure 3 for Figure 1 partial enlarged structural schematic view of D in the middle;

[0025] Figure 4 structure schematic view of another view of the utility model;

[0026] Figure 5 for Figure 4 partial enlarged structural schematic view of B in the middle;

[0027] Figure 6 for Figure 4 partial enlarged structural schematic view of C in the middle;

[0028] Figure 7 structure schematic view of the utility model in the upper support column installation state;

[0029] Figure 8 structure schematic view of the utility model in the upper support column and the lower support column preliminary positioning installation state;

[0030] Figure 9 partial structure schematic view of the utility model in the soundproof board is lifted state;

[0031] Figure 10 structure schematic view of the utility model in the intermediate spacer between adjacent soundproof board is placed.

[0032] In the drawing: H-shaped steel column 1;Lower support column 1.1;Upper support column 1.2;Soundproof board 2;U-shaped groove 3;Baffle 4;Inner baffle 4.1;Opening 5;Movable baffle 6;Hinge structure 7;First hinge 7.1;Second hinge 7.2;Latches 7.3;Fixed structure 8;Door type space 8.1;Extension plate 8.2;Connecting hole 9;Lower inclined support rod 10;First rod 10.1;Second rod 10.2;First positive and negative screw adjusting structure 11;Upper inclined support rod 12;Third rod 12.1;Fourth rod 12.2;Second positive and negative screw adjusting structure 13;Locking piece 14;Crossbeam 15;Corner column 16;Bottom spacer 17;Lifting arm 18;Bottom lifting space 19;Intermediate spacer 20;Take out space 21. DETAILED DESCRIPTION

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0034] Example 1:

[0035] like Figures 1-10 As shown, this embodiment provides a sound barrier for well sites, including multiple H-shaped steel columns 1 arranged side by side at intervals. Several sound insulation panels 2 are longitudinally distributed between two adjacent H-shaped steel columns 1. The sound insulation panel 2 includes a metal shell and sound-absorbing material embedded in the metal shell. The metal shell can be made of aluminum, and the sound-absorbing material can be sound-absorbing cotton. The U-shaped grooves 3 of adjacent H-shaped steel columns 1 are arranged facing each other, and the ends of the sound insulation panels 2 are embedded in the U-shaped grooves 3 of the H-shaped steel columns 1. The lower end of the baffle 4 of the H-shaped steel column 1 is provided with an opening 5, and a movable baffle 6 is provided at the opening 5. The height of the opening 5 is greater than or equal to the width of the sound insulation panel 2. The sound insulation panel 2 is placed into the U-shaped grooves 3 of two adjacent H-shaped steel columns 1 from the opening 5.

[0036] In this technical solution, because the lower end of the baffle 4 of the H-shaped steel column 1 has an opening 5, the height of which is greater than or equal to the width of the sound insulation panel 2, the opening 5 facilitates the insertion of the sound insulation panel 2 from the lower end of the H-shaped steel column 1 into the U-shaped grooves 3 on both sides of the H-shaped steel column 1. The U-shaped grooves 3 on both sides of the H-shaped steel column 1 form a lifting track, and the combination of the opening 5 and the U-shaped grooves 3 facilitates the sequential installation of the sound insulation panel 2 from bottom to top. Specifically, during installation, as follows... Figure 9 As shown, first, a bottom pad 17 is placed on the ground between two H-shaped steel columns. Then, a sound insulation board 2 is placed into the U-shaped groove 3 through the opening 5. The bottom pad 17 supports the sound insulation board 2, and the bottom pad 17 allows a bottom lifting space 19 to be formed below the sound insulation board 2, facilitating the insertion of the lifting arm 18 of an electric stacker or hydraulic forklift into the bottom lifting space 19. Then, the sound insulation board 2 is lifted by the lifting arm 18 until it is higher than the opening 5. Then, another sound insulation board 2 is placed through the opening 5, and an intermediate pad 20 is placed between the two sound insulation boards 2. Figure 10As shown, the intermediate pad 20 adopts a wedge-shaped pad, so that a taking-out space 21 is formed between adjacent sound insulation boards 2 for the lifting arm 18 to take out, then the electric lift truck moves, the lifting arm 18 is taken out from the taking-out space 21, and then the intermediate pad 20 is taken out (the intermediate pad 20 can also be replaced by an air pad, which realizes the supporting effect of the pad by inflation, and after the lifting arm 18 is taken out, the air pad is directly deflated, so that the air pad does not need to be taken out, and the close connection of the two sound insulation boards 2 can also be realized), and then the lifting arm 18 is inserted into the bottom lifting space 19 of the next sound insulation board 2, and then the lifting arm 18 is lifted to lift the sound insulation boards 2 until the sound insulation boards 2 are lifted to a position higher than the opening 5, and the above-mentioned repeated actions of placing the next sound insulation board 2 at the opening 5, placing the intermediate pad 20, taking out the lifting arm 18, taking out the intermediate pad 20, and inserting the lifting arm 18 into the bottom lifting space 19 for continuous lifting are repeated, so that the sound insulation boards 2 can be installed from bottom to top. Since the movable baffle 6 is arranged at the opening 5, after the sound insulation boards 2 are installed, the opening 5 can be closed through the movable baffle 6, and the entire installation process of the sound insulation boards 2 does not need the aerial platform truck and does not need to be operated on the aerial platform, so that the construction is convenient and fast, the construction cost is greatly reduced, and the construction safety is higher.

[0037] Embodiment 2

[0038] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0039] In order to fix and install the column without the need of a crane, the H-shaped steel column 1 includes a lower support column 1.1 and an upper support column 1.2, the lower end of the lower support column 1.1 is fixed to the ground, a hinge structure 7 and a fixing structure 8 are arranged between the lower support column 1.1 and the upper support column 1.2, the upper support column 1.2 is rotationally connected to the lower support column 1.1 through the hinge structure 7, and the upper support column 1.2 is fixedly connected to the lower support column 1.1 through the fixing structure 8.

[0040] During specific installation, a rope (not shown in the figure) is tied to the upper end of the upper support column 1.2, due to the arrangement of the hinge structure 7, the upper support column 1.2 can be flipped upward by pushing it on one side with a support rod (not shown in the figure) and cooperating with the pulling of the rope, until the upper support column 1.2 is flipped and pulled to a vertical state, and then the upper support column 1.2 and the lower support column 1.1 are fixed through the fixing structure 8.

[0041] Embodiment 3

[0042] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0043] In order to facilitate the on-site installation of the hinged structure 7, the hinged structure 7 comprises a first hinge 7.1 and a second hinge 7.2, the first hinge 7.1 is installed at the upper end of the lower support column 1.1, the second hinge 7.2 is installed at the lower end of the upper support column 1.2, and the rotating part of the first hinge 7.1 and the second hinge 7.2 is inserted with a pin 7.3, as shown in Figure 8 The insertion timing of the pin 7.3 is to insert it when the upper support column 1.2 needs to be installed.

[0044] Embodiment 4:

[0045] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0046] In order to maintain the preliminary stability of the upper support column 1.2 and the lower support column 1.1, so as to facilitate the subsequent installation of the fixing structure 8, the inner side and the outer side of the lower support column 1.1 and the upper support column 1.2 are provided with the hinged structure 7. First insert one side of the pin 7.3, and then insert the other side of the pin 7.3 after the upper support column 1.2 is erected, so as to maintain the preliminary positioning of the upper support column 1.2.

[0047] Embodiment 5:

[0048] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0049] In order to facilitate the fixed installation of the upper support column 1.2 and the lower support column 1.1, the fixing structure 8 comprises a door-shaped plate, the hinged structure 7 is located in the door-shaped space 8.1 of the door-shaped plate, and the two ends of the door-shaped plate are respectively provided with extension plates 8.2, and the two extension plates 8.2 are respectively fixedly connected with the lower support column 1.1 and the upper support column 1.2.

[0050] Embodiment 6:

[0051] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0052] In order to facilitate the construction work from the inner side of the screen, the opening 5 is arranged on the inner side baffle 4.1 of the lower support column 1.1.

[0053] Embodiment 7:

[0054] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0055] In order to facilitate the connection of the rope, the upper end of the upper support column 1.2 is provided with a connecting hole 9 for facilitating the passing of the rope.

[0056] Embodiment 8:

[0057] This embodiment is an optimization based on the above-mentioned embodiment 1.

[0058] In order to provide stable support for the lower part of the barrier and facilitate the support point of the ground of different height, the inner side and the outer side of the lower support column 1.1 are respectively provided with a lower inclined support rod 10, the lower inclined support rod 10 comprises a first rod 10.1 and a second rod 10.2, the first rod 10.1 is fixedly connected with the upper end of the lower support column 1.1, the lower end of the second rod 10.2 is fixedly connected with the ground, and the first rod 10.1 and the second rod 10.2 are provided with a first positive and negative screw thread adjusting structure 11.

[0059] Embodiment 9:

[0060] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0061] In order to provide stable support for the upper part of the barrier and facilitate the support point of the ground of different height, the outer side of the upper support column 1.2 is provided with an upper inclined support rod 12, the upper inclined support rod 12 comprises a third rod 12.1 and a fourth rod 12.2, the third rod 12.1 is fixedly connected with the middle part of the upper support column, the lower end of the fourth rod 12.2 is fixedly connected with the ground, and the third rod 12.1 and the fourth rod 12.2 are provided with a second positive and negative screw thread adjusting structure 13.

[0062] Embodiment 10:

[0063] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0064] The lower end of the movable baffle 6 is rotationally connected with the lower end of the opening 5, and the upper end of the movable baffle 6 is provided with a locking piece 14 between the upper end of the opening 5. The locking piece 14 can be any buckle locking structure in the prior art. The movable baffle 6 in this arrangement can be turned to a state of not blocking the opening 5 in the open state, facilitating the placement of the sound insulation board 2.

[0065] In order to improve the structural stability of the barrier, the outer side and the inner side of the two adjacent H-shaped steel columns 1 are provided with a cross beam 15.

[0066] It should be noted that in order to realize the adaptation of the corner column 16, the corner of the barrier is provided with a corner column 16, and the two adjacent surfaces of the corner column 16 are provided with grooves opposite to the U-shaped grooves 3 of the adjacent H-shaped steel columns 1.

[0067] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sound barrier for a well site, characterized by: The utility model provides a sound insulation board and H-shaped steel column are arranged in parallel, and the U-shaped groove of the adjacent H-shaped steel column is arranged oppositely, and the end of the sound insulation board is embedded in the U-shaped groove of the H-shaped steel column, the lower end of the baffle of the H-shaped steel column is equipped with an opening, and the opening is equipped with a movable baffle, the height of the opening is greater than or equal to the width of the sound insulation board, and the sound insulation board is put into the U-shaped groove of the adjacent two H-shaped steel columns from the opening.

2. A sound barrier for a well site according to claim 1, characterized in that: The H-shaped steel column comprises a lower support column and an upper support column, the lower end of the lower support column is fixed to the ground, the hinge structure and the fixed structure are arranged between the lower support column and the upper support column, the upper support column and the lower support column are rotatably connected through the hinge structure, and the upper support column and the lower support column are fixedly connected through the fixed structure.

3. A sound barrier for a well site according to claim 2, characterized in that: The hinge structure comprises a first hinge and a second hinge, the first hinge is installed at the upper end of the lower support column, the second hinge is installed at the lower end of the upper support column, and the rotating part of the first hinge and the second hinge is inserted into the bolt.

4. A sound barrier for a well site according to claim 3, characterized in that: The inner side and the outer side of the lower support column and the upper support column are provided with the hinge structure.

5. A sound barrier for a well site according to claim 3, characterized in that: The fixed structure comprises a door-shaped plate, the hinge structure is located in the door-shaped space of the door-shaped plate, and the two ends of the door-shaped plate are respectively provided with extension plates, and the two extension plates are fixedly connected with the lower support column and the upper support column respectively.

6. A sound barrier for a well site according to claim 2, characterized in that: The opening is arranged on the inner side baffle of the lower support column.

7. A sound barrier for a well site according to claim 2, characterized in that: The upper end of the upper support column is provided with a connecting hole for facilitating the passage of a rope.

8. A sound barrier for a well site according to claim 2, characterized in that: The inner side and the outer side of the lower support column are respectively provided with lower inclined support rods, the lower inclined support rods comprise a first rod and a second rod, the first rod is fixedly connected with the upper end of the lower support column, the lower end of the second rod is fixedly connected with the ground, and a first right and left screw adjusting structure is arranged between the first rod and the second rod.

9. A sound barrier for a well site according to claim 8, characterized in that: The outer side of the upper support column is provided with an upper inclined support rod, the upper inclined support rod comprises a third rod and a fourth rod, the third rod is fixedly connected with the middle part of the upper support column, the lower end of the fourth rod is fixedly connected with the ground, and a second right and left screw adjusting structure is arranged between the third rod and the fourth rod.

10. A sound barrier for a well site according to claim 1, characterized in that: The lower end of the movable baffle is rotatably connected with the lower end of the opening, and a locking piece is arranged between the upper end of the movable baffle and the upper end of the opening.

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