Flange for shale gas exploitation plunger pump

Abstract

The invention relates to the technical field of shale gas exploitation equipment, and discloses a flange for a shale gas exploitation plunger pump, which comprises a first pipeline and a second pipeline, the two connecting ring plates are fixedly arranged on the surface of the first pipeline and the surface of the second pipeline in a sleeving mode correspondingly; the male flange and the female flange are fixedly connected to the right side face of the first pipeline and the left end face of the second pipeline respectively; the assembling plate is located between the male flange and the female flange, a through groove is formed in the left side face of the assembling plate in a penetrating mode, the right side face of the male flange and the left end face of the female flange slidably penetrate through the left side face and the right side face of the assembling plate respectively and extend into the through groove, and a cavity is formed in the assembling plate. According to the flange for the shale gas exploitation plunger pump, the connecting block slides into the sliding groove through the connecting assembly, the connecting plate is pushed through the push rod, so that the clamping block slides into the clamping groove, the male flange and the female flange are connected, the male flange and the female flange can be connected without other tools, and the connecting efficiency of the flange for the shale gas exploitation plunger pump is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shale gas mining equipment, in particular to a flange for a shale gas mining plunger pump. Background Art

[0002] Shale gas refers to unconventional natural gas that occurs in reservoir rock systems dominated by organic-rich shales. It is a continuously generated biochemical gas, thermogenic gas, or a mixture of the two. It can exist in a free state in natural cracks and pores, in an adsorbed state on the surface of kerogen and clay particles, and a very small amount is stored in a dissolved state in kerogen and asphaltene. A large number of plunger pumps are used in shale gas extraction. The plunger pump is an important device in the hydraulic system. It relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve oil suction and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and easy flow regulation. It is widely used in high pressure, large flow and flow adjustment occasions, such as hydraulic presses, engineering machinery and ships. A large number of flanges are used when using plunger pumps.

[0003] According to the flange for shale gas extraction plunger pumps published by China Patent, the publication number is CN209990624U, which includes a female flange, a pipe connector, a first connecting plate, fixing bolts, and a second connecting plate. The first connecting plate is installed at one end of the female flange, an extension plate is installed on one side of the first connecting plate, and the second connecting plate is installed on the upper and lower sides of the first connecting plate by fixing bolts. The interior of the second connecting plate is installed with an empty groove, a male flange is installed on one side of the second connecting plate, and a second sealing strip is installed on one side of the outer side of the male flange. The second connecting plate and one side of the first connecting plate are installed with a pipe connector, and a shell is installed at one end of the pipe connector, and two sets of protrusions are provided on the shell. This solution effectively improves the strength of the device by installing a stainless steel layer to prevent problems such as deformation under high pressure. The pipe connector and the connecting plate are connected more tightly by using a connecting block. This device utilizes bolt holes to install bolts, thereby connecting its second connecting plate to the first connecting plate. However, existing devices still have the following problems: when using bolts to connect the first and second connecting plates, additional tools are required for installation, and the bolts are prone to thread stripping and rusting, which affects the connection between the male and female flanges. Therefore, a flange for a shale gas extraction plunger pump is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a flange for a shale gas production plunger pump to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a flange for a shale gas extraction plunger pump, comprising a first pipe and a second pipe; Two connecting ring plates are fixedly sleeved on the surfaces of the first pipe and the second pipe respectively; A male flange and a female flange are fixedly connected to the right side of the first pipeline and the left end face of the second pipeline respectively; and an assembly plate located between the male flange and the female flange, wherein a through groove is formed on the left side of the assembly plate, and the right side of the male flange and the left end face of the female flange slide through the left and right sides of the assembly plate and extend into the through groove respectively; a cavity is formed inside the assembly plate, and a connecting component is provided inside the cavity; a connecting ring plate facilitates positioning of the male flange and the female flange after sliding into the through groove, thereby facilitating connection between the male flange and the female flange; A locking component is provided on the surface of the connecting component; A shock absorbing component is arranged below the assembly plate.

[0006] The two lever of the two rear ends have the upper and lower ends of the shafts connected to the front of the two guide rails, the lower ends of the two guide rails are connected with the support rails of the two rear ends respectively. The worm gear is fixedly mounted on the support frame of the first rotating shaft and the support frame of the second rotating shaft is fixedly mounted on the support frame of the second rotating shaft.

[0007] Preferably, a sealing ring is fixedly connected to the inner wall of the through groove, and the surface of the female flange is sealed and extruded with the inner wall of the through groove through the sealing ring, thereby improving the sealing performance of the connection between the female flange and the male flange.

[0008] Preferably, a hollow groove is opened through the left side of the male flange, and a slide is fixedly connected to the inner wall of the hollow groove. A connecting rod is fixedly connected to the left end face of the female flange. The left end face of the connecting rod slides through the right side of the slide and extends to the inside of the slide. The slide and the connecting rod have a positioning effect on the connection between the male flange and the female flange.

[0009] Preferably, the locking assembly includes a rotating plate fixedly connected to the left end face of the second rotating rod, the rotating plate surface is fixedly connected to the support rod, the right end face of the support rod is fixedly connected to the fixed plate, the right side of the fixed plate is slidably connected to the left side of the support plate, an insertion rod is provided on the left side of the fixed plate, and a slot adapted for the insertion rod is opened through the left side of the support plate, the right end face of the insertion rod slides through the left side of the fixed plate and the left side of the support plate and extends into the inside of the slot, and the fixed plate is locked by using the insertion rod, thereby locking the rotating plate and the second rotating rod.

[0010] Preferably, a pull plate is provided on the left side of the insertion rod, and the right side of the pull plate is fixedly connected to the left end face of the insertion rod, so that the pull plate facilitates pulling the insertion rod.

[0011] Preferably, the shock-absorbing assembly includes a connecting frame located below the assembly plate, the bottom end surface of the assembly plate slides through the top surface of the connecting frame and extends to the inside of the connecting frame, the bottom surface of the assembly plate is fixedly connected to an elastic arc plate, and the left and right bottom surfaces of the elastic arc plate are fixedly connected to moving blocks, the two moving blocks are symmetrically arranged, and a sliding rod is provided on the left side of the two moving blocks, and the right end surface of the sliding rod slides through the left sides of the two moving blocks and extends to the right side of the two moving blocks, the left and right end surfaces of the sliding rod are respectively fixedly connected to the inner side surface of the connecting frame, the surface of the sliding rod is provided with a spring, and the left and right end surfaces of the spring are respectively fixedly connected to the inner side surface of the connecting frame and the side surface of the moving block, and the sliding rod supports the moving block.

[0012] Preferably, the front and back surfaces of the movable block are fixedly connected to L-shaped plates, and rollers are installed on the inner sides of the two L-shaped plates. The side surfaces of the rollers are rotatably connected to the inner sides of the L-shaped plates through bearing seats, and the inner bottom surface of the connecting frame is fixedly connected to a damping plate. The bottom surface of the roller is in contact with the top surface of the damping plate, and the damper reduces the vibration of the roller, thereby reducing the shock of the assembly plate.

[0013] Preferably, a damper is provided on the front side of the damping plate, the bottom end surface of the damper is fixedly connected to the inner bottom surface of the connecting frame, and the top end surface of the damper output rod is fixedly connected to the bottom surface of the assembly plate. The damping property of the damper itself has a shock-absorbing effect on the assembly plate, thereby reducing the vibration between the male flange and the female flange.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The flange for the shale gas extraction plunger pump uses a connecting assembly to slide the connecting block into the slide groove, and the connecting plate is pushed by a push rod to make the clamping block slide into the clamping groove, thereby connecting the male flange and the female flange. The male flange and the female flange can be connected without the help of other tools, thereby improving the connection efficiency of the flange for the shale gas extraction plunger pump; 2. The flange for the shale gas extraction plunger pump is secured by inserting a rod into a slot to lock the fixed plate, thereby locking the rotating plate and the second rotating rod, thereby preventing the male flange and the female flange from separating after connection, thereby improving the connection effect of the flange for the shale gas extraction plunger pump; 3. The flange for the shale gas extraction plunger pump uses a shock-absorbing assembly and an elastic arc plate to push the moving block to slide on the slide rod, so that the spring is squeezed and the roller slides on the damping plate. The damping properties of the damper and the damper themselves, as well as the spring force, reduce the vibration of the assembly plate, thereby reducing the vibration of the male and female flanges and improving the stability of the connection between the male and female flanges. 4. The flange for the shale gas extraction plunger pump realizes the positioning when connecting the male flange and the female flange by connecting the ring plate, the sliding cylinder and the connecting rod, which facilitates the connection of the male flange and the female flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a left side sectional perspective view of the double-threaded rod of the present invention; Figure 2 This is the overall main perspective view of the present invention; Figure 3 It is a rear perspective view of the whole invention; Figure 4 It is a right perspective view of the double-threaded rod of the present invention; Figure 5 This is a frontal sectional perspective view of the connecting rod of the present invention; Figure 6 This is a cutaway perspective view of the right side of the card block of the present invention; Figure 7 This is a front perspective view of the connecting rod of the present invention; Figure 8 This is a front perspective view of the slide bar of the present invention; Figure 9 For the present invention Figure 5 Enlarged stereogram of area A in the middle.

[0016] In the figure: first pipe 1, second pipe 2, connecting ring plate 3, male flange 4, female flange 5, connecting assembly 60, slide 601, connecting rod 602, connecting block 603, double-headed threaded rod 604, slider 605, push rod 606, connecting plate 607, clamping block 608, first rotating rod 609, worm gear 6010, worm 6011, connecting seat 6012, support plate 6013, second rotating rod 6014, first bevel gear 6015, second bevel gear 6016, sealing ring 6017, locking assembly 61, rotating plate 611, support rod 612, fixing plate 613, inserting rod 614, pulling plate 615, shock absorbing assembly 62, connecting frame 621, damper 622, elastic arc plate 623, moving block 624, sliding rod 625, spring 626, L-shaped plate 627, roller 628, damping plate 629, assembly plate 7. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1 - Figure 9 , the present invention provides a technical solution: a flange for a shale gas extraction plunger pump, comprising a first pipeline 1 and a second pipeline 2; Two connecting ring plates 3 are fixedly sleeved on the surface of the first pipe 1 and the surface of the second pipe 2 respectively; A male flange 4 and a female flange 5 are fixedly connected to the right side of the first pipe 1 and the left end face of the second pipe 2 respectively; and an assembly plate 7 located between the male flange 4 and the female flange 5. A through slot is formed on the left side of the assembly plate 7. The right side of the male flange 4 and the left end face of the female flange 5 slide through the left and right sides of the assembly plate 7 and extend into the through slot. A cavity is formed inside the assembly plate 7, and a connecting assembly 60 is provided inside the cavity. A locking component 61 is provided on the surface of the connecting component 60; A shock absorbing assembly 62 is provided below the assembly plate 7 .

[0019] The connecting assembly 60 includes a double-headed threaded rod 604 and two sliders 605 located inside the cavity. The thread on the bottom end face of the double-headed threaded rod 604 passes through the top surface of the two sliders 605 and extends to the bottom of the two sliders 605. The rear side faces of the two sliders 605 are slidably connected to the inner wall of the cavity. The front end faces of the two sliders 605 are hinged with push rods 606. The front sides of the two push rods 606 are provided with connecting plates 607. The front side faces of the connecting plates 607 are fixedly connected with a clamping block 608. The left side face of the female flange 5 is fixedly connected with the connecting block 603. The right side face of the male flange 4 is provided with a sliding groove adapted to the connecting block 603. The left end face of the connecting plate 607 slides through the male flange 4 The right side extends to the inside of the slide groove, and a through groove is opened on the surface of the male flange 4. A slot adapted to the block 608 is opened on the side of the connecting plate 607. The front end surface of the block 608 slides through the inner wall of the cavity, the male flange 4 and the side of the connecting plate 607 extend to the inside of the slot. The top end surface of the double-headed threaded rod 604 is fixedly connected to the first rotating rod 609, and the top end surface of the first rotating rod 609 slides through the inner wall of the cavity and extends to the top of the assembly plate 7. The bottom end surface of the double-headed threaded rod 604 and the surface of the first rotating rod 609 are respectively rotatably connected to the inner wall of the cavity through the bearing seat. A worm gear 6010 is fixedly sleeved on the surface of the first rotating rod 609. The right side of the worm gear 6010 A worm 6011 and a connecting seat 6012 are provided on the side, the surface of the worm 6011 is meshed with the side of the worm wheel 6010, the front end surface of the worm 6011 passes through the rear side of the connecting seat 6012 and extends to the front side of the connecting seat 6012, a support plate 6013 and a second rotating rod 6014 are provided on the left side of the connecting seat 6012, the bottom end surface of the connecting seat 6012 and the support plate 6013 are fixedly connected to the top surface of the assembly plate 7, the right end surface of the second rotating rod 6014 passes through the left side of the support plate 6013 and extends to the right side of the support plate 6013, the surface of the second rotating rod 6014 is rotatably connected to the inner wall of the support plate 6013 through the bearing seat, and the surface of the worm 6011 is provided. The bearing seat is rotatably connected to the inner wall of the connecting seat 6012, and a first bevel gear 6015 is fixedly sleeved on the surface of the second rotating rod 6014. A second bevel gear 6016 is fixedly sleeved on the surface of the worm 6011. The side surface of the first bevel gear 6015 is meshed with the side surface of the second bevel gear 6016. Through the connecting assembly 60, the connecting block 603 is used to slide into the slide groove, and the connecting plate 607 is pushed by the push rod 606 to make the clamping block 608 slide into the clamping groove, thereby connecting the male flange 4 and the female flange 5. The male flange 4 and the female flange 5 can be connected without the aid of other tools, thereby improving the connection efficiency of the flange for the shale gas extraction plunger pump.

[0020] A sealing ring 6017 is fixedly connected to the inner wall of the through groove, and the surface of the female flange 5 is sealed and extruded with the inner wall of the through groove through the sealing ring 6017.

[0021] An empty groove is opened through the left side of the male flange 4, and a slide 601 is fixedly connected to the inner wall of the empty groove. A connecting rod 602 is fixedly connected to the left end face of the female flange 5. The left end face of the connecting rod 602 slides through the right side of the slide 601 and extends to the inside of the slide 601. By connecting the ring plate 3, the slide 601 and the connecting rod 602, the positioning of the male flange 4 and the female flange 5 is achieved when they are connected, which facilitates the connection of the male flange 4 and the female flange 5.

[0022] Example 2: Based on Example 1, a preferred embodiment of a flange for a shale gas extraction plunger pump provided by the present invention is as follows: Figure 3 、 Figure 5 and Figure 9 As shown: the locking assembly 61 includes a rotating plate 611 fixedly connected to the left end face of the second rotating rod 6014, a support rod 612 fixedly connected to the surface of the rotating plate 611, and a fixed plate 613 fixedly connected to the right end face of the support rod 612, the right side of the fixed plate 613 is slidably connected to the left side of the support plate 6013, and an insertion rod 614 is provided on the left side of the fixed plate 613, and a slot adapted to the insertion rod 614 is opened on the left side of the support plate 6013, and the right end face of the insertion rod 614 slides through the left side of the fixed plate 613 and the left side of the support plate 6013 and extends into the inside of the slot, and the fixing plate 613 is locked by inserting the insertion rod 614 into the slot through the stabilizing assembly 61, thereby locking the rotating plate 611 and the second rotating rod 6014, avoiding separation of the male flange 4 and the female flange 5 after connection, and improving the connection effect of the flange for the shale gas extraction plunger pump.

[0023] A pull plate 615 is provided on the left side of the insertion rod 614 , and the right side of the pull plate 615 is fixedly connected to the left end face of the insertion rod 614 .

[0024] Example 3: Based on Example 1, a preferred embodiment of a flange for a shale gas extraction plunger pump provided by the present invention is as follows: Figure 1 、 Figure 2 、 Figure 6 and Figure 8As shown: the shock absorbing assembly 62 includes a connecting frame 621 located below the assembly plate 7, the bottom end surface of the assembly plate 7 slides through the top surface of the connecting frame 621 and extends to the inside of the connecting frame 621, the bottom surface of the assembly plate 7 is fixedly connected to an elastic arc plate 623, and the left and right bottom surfaces of the elastic arc plate 623 are fixedly connected to moving blocks 624, the two moving blocks 624 are symmetrically arranged, and a sliding rod 625 is provided on the left side of the two moving blocks 624. The right end surface of the sliding rod 625 slides through the left side of the two moving blocks 624 and extends to the right side of the two moving blocks 624, and the left and right end surfaces of the sliding rod 625 are respectively fixed to the inner side surface of the connecting frame 621 The sliding rod 625 is connected with a spring 626, and the left and right end faces of the spring 626 are fixedly connected to the inner side of the connecting frame 621 and the side of the moving block 624 respectively. Through the shock absorbing component 61, the elastic arc plate 623 is used to push the moving block 624 to slide on the sliding rod 625, so that the spring 626 is squeezed, and the roller 628 slides on the damping plate 629. The damping properties of the damper plate 629 and the damper 622 themselves and the action of the spring 626 are used to reduce the vibration of the assembly plate 7, thereby reducing the vibration of the male flange 4 and the female flange 5, and improving the stability of the connection between the male flange 4 and the female flange 5.

[0025] The front and back surfaces of the moving block 624 are fixedly connected to L-shaped plates 627, and rollers 628 are installed on the inner sides of the two L-shaped plates 627. The sides of the rollers 628 are rotatably connected to the inner sides of the L-shaped plates 627 through bearing seats. The inner bottom surface of the connecting frame 621 is fixedly connected to a damping plate 629, and the bottom surface of the rollers 628 is in contact with the top surface of the damping plate 629.

[0026] A damper 622 is provided on the front side of the damping plate 629 , the bottom end surface of the damper 622 is fixedly connected to the inner bottom surface of the connecting frame 621 , and the top end surface of the output rod of the damper 622 is fixedly connected to the bottom surface of the assembly plate 7 .

[0027] When in use, insert the two ends of the male flange 4 and the female flange 5 into the through grooves respectively, slide the connecting rod 602 into the slide cylinder 601, and slide the connecting block 603 into the slide groove. When the connecting ring plate 3 contacts the assembly plate 7, slide the insert rod 614 out of the slot, rotate the rotating plate 611, and the rotating plate 611 drives the second rotating rod 6014, so that the second rotating rod 6014 drives the first bevel gear 6015 to rotate, and the first bevel gear 6015 and the second bevel gear 6016 are engaged to make the worm 6011 rotate, and the worm 6011 drives the meshing worm gear 6 010 rotates, thereby causing the first rotating rod 609 to rotate and drive the double-headed threaded rod 604 to rotate. The double-headed threaded rod 604 drives the two sliders 605 to approach each other, causing the push rod 606 to drive the connecting plate 607 to move forward. The connecting plate 607 drives the clamping block 608 to slide forward into the clamping groove, thereby connecting the male flange 4 and the female flange 5. After the male flange 4 and the female flange are connected, the insertion rod 614 is inserted into the slot. The insertion rod 614 locks the fixed plate 613, and then locks the rotating plate 611 and the second rotating rod 6014. When the first pipe 1 and the second pipe 2 vibrate, the male flange 3 and the female flange 5 vibrate, thereby causing the assembly plate 7 to vibrate. The assembly plate 7 squeezes the elastic arc plate 623 and the damper 622. The elastic arc plate 623 squeezes the moving block 624 downward. The moving block 624 drives the roller 628 to move. The roller 628 slides on the damping plate 629. The damping plate 629 reduces the vibration of the roller 628. The moving block 624 slides on the slide rod 625 and squeezes the spring 626. The force of the spring 626 and the damping property of the damper 622 itself have a shock-absorbing effect on the assembly plate 7.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A flange for a shale gas extraction plunger pump, comprising a first pipe (1) and a second pipe (2); Two connecting ring plates (3) are fixedly sleeved on the surface of the first pipe (1) and the surface of the second pipe (2), respectively; A male flange (4) and a female flange (5) fixedly connected to the right side of the first pipe (1) and the left end face of the second pipe (2), respectively; and an assembly plate (7) located between the male flange (4) and the female flange (5), wherein a through slot is provided on the left side of the assembly plate (7), and the right side of the male flange (4) and the left end face of the female flange (5) respectively slide through the left and right sides of the assembly plate (7) and extend into the through slot, characterized in that: A cavity is provided inside the assembly plate (7), and a connecting component (60) is provided inside the cavity; A locking component (61) is provided on the surface of the connecting component (60); A shock absorbing component (62) is provided below the assembly plate (7).

2. The flange for a shale gas extraction plunger pump according to claim 1, characterized in that: The connecting assembly (60) includes a double-headed threaded rod (604) and two sliders (605) located inside the cavity. The bottom end surface of the double-headed threaded rod (604) is threaded through the top surfaces of the two sliders (605) and extends to the bottom of the two sliders (605). The rear side surfaces of the two sliders (605) are slidably connected to the inner wall of the cavity. The front ends of the two sliders (605) are hinged with push rods (606). The front sides of the two push rods (606) are provided with connecting plates (607). The front side surfaces of the connecting plates (607) are fixedly connected with a clamping block (608). The left side surface of the female flange (5) is fixedly connected with the connecting block (603). The right side surface of the male flange (4) is penetrated. A sliding groove is provided which is adapted to the connecting block (603); the left end face of the connecting plate (607) slides through the right side face of the male flange (4) and extends to the inside of the sliding groove; a through groove is provided on the surface of the male flange (4); a clamping groove which is adapted to the clamping block (608) is provided on the side face of the connecting plate (607); the front end face of the clamping block (608) slides through the inner wall of the cavity, the male flange (4) and the side face of the connecting plate (607) and extends to the inside of the clamping groove; the top end face of the double-headed threaded rod (604) is fixedly connected to the first rotating rod (609); the top end face of the first rotating rod (609) slides through the inner wall of the cavity and extends to the top of the assembly plate (7); the double-headed threaded rod (604) ) bottom end surface and the surface of the first rotating rod (609) are respectively connected to the inner wall of the cavity through the bearing seat, and the surface of the first rotating rod (609) is fixedly provided with a worm wheel (6010) on the surface of the first rotating rod (609), and a worm (6011) and a connecting seat (6012) are provided on the right side of the worm wheel (6010), and the surface of the worm (6011) is engaged with the side surface of the worm wheel (6010), and the front end surface of the worm (6011) passes through the rear side surface of the connecting seat (6012) and extends to the front side of the connecting seat (6012), and a support plate (6013) and a second rotating rod (6014) are provided on the left side of the connecting seat (6012), and the bottom end surface of the connecting seat (6012) and the support plate (6013) are connected to the bottom end surface of the connecting seat (6012) and the support plate (6013). ) are fixedly connected to the top surface of the assembly plate (7), the right end surface of the second rotating rod (6014) passes through the left side of the support plate (6013) and extends to the right side of the support plate (6013), the surface of the second rotating rod (6014) is rotatably connected to the inner wall of the support plate (6013) through a bearing seat, the surface of the worm (6011) is rotatably connected to the inner wall of the connecting seat (6012) through a bearing seat, the surface of the second rotating rod (6014) is fixedly provided with a first bevel gear (6015), the surface of the worm (6011) is fixedly provided with a second bevel gear (6016), and the side surface of the first bevel gear (6015) is meshed with the side surface of the second bevel gear (6016).

3. The flange for a shale gas extraction plunger pump according to claim 2, characterized in that: A sealing ring (6017) is fixedly connected to the inner wall of the through groove, and the surface of the female flange (5) is sealed and extruded with the inner wall of the through groove via the sealing ring (6017).

4. The flange for a shale gas extraction plunger pump according to claim 2, characterized in that: The left side of the male flange (4) is provided with an empty slot, and the inner wall of the empty slot is fixedly connected to a slide cylinder (601). The left end face of the female flange (5) is fixedly connected to a connecting rod (602), and the left end face of the connecting rod (602) slides through the right side face of the slide cylinder (601) and extends into the interior of the slide cylinder (601).

5. The flange for a shale gas extraction plunger pump according to claim 2, characterized in that: The locking assembly (61) comprises a rotating plate (611) fixedly connected to the left end face of the second rotating rod (6014); a support rod (612) is fixedly connected to the surface of the rotating plate (611); a fixing plate (613) is fixedly connected to the right end face of the support rod (612); the right side face of the fixing plate (613) is slidably connected to the left side face of the supporting plate (6013); an insertion rod (614) is provided on the left side of the fixing plate (613); a slot adapted to the insertion rod (614) is provided through the left side face of the supporting plate (6013); the right end face of the insertion rod (614) slides through the left side faces of the fixing plate (613) and the supporting plate (6013) and extends into the interior of the slot.

6. The flange for a shale gas extraction plunger pump according to claim 5, characterized in that: A pull plate (615) is provided on the left side of the insertion rod (614), and the right side of the pull plate (615) is fixedly connected to the left end face of the insertion rod (614).

7. The flange for a shale gas extraction plunger pump according to claim 1, characterized in that: The shock absorbing component (62) includes a connecting frame (621) located below the assembly plate (7), the bottom end surface of the assembly plate (7) slides through the top surface of the connecting frame (621) and extends to the inside of the connecting frame (621), the bottom surface of the assembly plate (7) is fixedly connected to an elastic arc plate (623), and the left and right bottom surfaces of the elastic arc plate (623) are fixedly connected to moving blocks (624), the two moving blocks (624) are symmetrically arranged, and a sliding rod (625) is provided on the left side of the two moving blocks (624), the right end surface of the sliding rod (625) slides through the left side of the two moving blocks (624) and extends to the right side of the two moving blocks (624), the left and right end surfaces of the sliding rod (625) are respectively fixedly connected to the inner side surface of the connecting frame (621), and a spring (626) is sleeved on the surface of the sliding rod (625), and the left and right end surfaces of the spring (626) are respectively fixedly connected to the inner side surface of the connecting frame (621) and the side surface of the moving block (624).

8. The flange for a shale gas extraction plunger pump according to claim 7, characterized in that: The front and rear surfaces of the moving block (624) are fixedly connected to L-shaped plates (627), and rollers (628) are installed on the inner sides of the two L-shaped plates (627). The sides of the rollers (628) are rotatably connected to the inner sides of the L-shaped plates (627) through bearing seats. The inner bottom surface of the connecting frame (621) is fixedly connected to a damping plate (629), and the bottom surface of the rollers (628) is in contact with the top surface of the damping plate (629).

9. The flange for a shale gas extraction plunger pump according to claim 8, characterized in that: A damper (622) is provided on the front side of the damping plate (629), the bottom end surface of the damper (622) is fixedly connected to the inner bottom surface of the connection frame (621), and the top end surface of the output rod of the damper (622) is fixedly connected to the bottom surface of the assembly plate (7).

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