CN111546285A

CN111546285A - Disassembling and assembling device and method for plunger pump sealing ring

Info

Publication number: CN111546285A
Application number: CN202010455599.3A
Authority: CN
Inventors: 李仪平; 沃春耀
Original assignee: Zhejiang Antong Auto Parts Co ltd
Current assignee: Zhejiang Antong Auto Parts Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-08-18

Abstract

The invention discloses a dismounting device and a dismounting method of a plunger pump sealing ring, wherein the dismounting device comprises the following steps: the clamp comprises a clamp body, wherein the clamp body is of a sleeve structure and comprises a cylinder wall and an inner cavity, the cylinder wall is provided with a clamping groove, and the clamping groove is provided with a sealing ring clamping opening; the core is pulled out in the dismouting, runs through the plug that sets up in anchor clamps originally, the dismouting is pulled out the core and is inserted and shut and connect in the inner chamber, the dismouting is pulled out the core and is hollow structure, dismouting is pulled out core inside and is provided with plug-type disassembly body. The core is pulled out in the dismouting of anchor clamps body through the anchor clamps body cooperation that is provided with the clamping groove and inserts to close, can realize accurate location and the quick installation of sealing washer, can utilize the plug-type disassembly body who sets up on the dismouting pull-out core again to dismantle fast the sealing washer that needs to be changed, and the function is comprehensive, and it is convenient to use.

Description

Disassembling and assembling device and method for plunger pump sealing ring

Technical Field

The invention relates to the technical field of automobile assembly, in particular to a device and a method for disassembling and assembling a sealing ring of a plunger pump.

Background

The main brake cylinder is a key component in an automobile brake system, and the main function of the main brake cylinder is to generate hydraulic pressure by pushing a piston in the main cylinder to move through displacement of pedal movement, so that the brake function is realized. In recent years, plunger pumps have been widely used in brake systems because they can satisfy the requirements of a large brake fluid flow rate, a large stroke, and a large displacement of a vehicle. As shown in fig. 1, four seal rings 1.0 are generally provided for a plunger pump 2.0 of a master cylinder, the seal rings 1.0 are fitted in seal ring grooves in a cylinder bore of the plunger pump 2.0, the seal rings have center holes, and a piston reciprocates relative to the seal rings 1.0 and the master cylinder 2.0 during operation. Because the internal diameter in jar hole is less than the external diameter of sealing washer, need before when assembling sealing washer 1.0 the sealing washer shrink deformation can only pack into in the jar hole, then need the manual work to get into the sealing washer inslot with simple and easy frock to the sealing washer extrusion, and traditional assembly mode exists and damages phenomenon such as spare part easily, assembly efficiency is low, intensity of labour is big.

The invention discloses an assembly tool and an assembly method for a sealing ring of a plunger pump cylinder body sealing ring assembly device in 2016, 4, 20 as a Chinese invention patent with the publication number of CN105500270A, wherein the assembly tool comprises a guide rod, a first guide rod and a second guide rod, wherein the guide rod can extend into a cylinder hole of a plunger pump cylinder body and can penetrate through a central hole of the sealing ring; the guide sleeve can extend into a cylinder hole of the plunger pump cylinder body, the inner diameter of the guide sleeve is larger than the outer diameter of the guide rod, and after the guide sleeve is sleeved outside the guide rod, a sealing ring sleeved on the guide rod can be accommodated in a gap between the guide sleeve and the guide rod; the sleeve can extend into a gap between the guide sleeve and the guide rod and is abutted to a sealing ring sleeved on the guide rod, and the assembling method comprises the following steps: inserting a guide rod, wherein one end of the guide rod extends into the cylinder hole, and the other end of the guide rod is exposed out of the cylinder hole; the guide sleeve is sleeved on the outer side of the guide rod, one end of the guide sleeve extends into the cylinder hole, and the other end of the guide sleeve is exposed out of the cylinder hole; sleeving a sealing ring, wherein the sealing ring is sleeved on the guide rod and is positioned in a gap between the guide rod and the guide sleeve; and pushing the sealing ring, inserting the sleeve into a gap between the guide rod and the guide sleeve, and pushing the sealing ring towards the inside of the cylinder hole until the sealing ring moves into the sealing ring groove. Although this assembly allows the gasket to be installed in the plunger pump, several problems remain:

firstly, the operation is inconvenient, and the process of pushing the sealing ring is quite difficult in consideration of the friction force between the sealing ring and the inner wall of the plunger pump, so that the assembly efficiency is low;

secondly, a guide device is not arranged, and the valve rubber is inclined in the assembling process, so that the valve rubber is locally damaged or pulled; thirdly, two to three persons are needed in the assembly process, and the tool needs to be knocked manually to install the valve rubber into the valve body;

no axial positioning is adopted during assembly, and the valve rubber mounting surface of the valve body is easily damaged during knocking and assembling, so that the use performance of parts is influenced;

fifthly, when the sealing ring is damaged and needs to be replaced, the assembly tool cannot be completed, and the universality is poor.

Disclosure of Invention

Aiming at various problems of a sealing ring assembling tool in the background technology, the invention provides a disassembling device and a disassembling method of a plunger pump sealing ring.

In order to achieve the purpose, the invention adopts the following technical scheme:

a device and a method for disassembling and assembling a sealing ring of a plunger pump comprise the following steps: the clamp comprises a clamp body, wherein the clamp body is of a sleeve structure and comprises a cylinder wall and an inner cavity, the cylinder wall is provided with a clamping groove, and the clamping groove is provided with a sealing ring clamping opening; the core is pulled out in the dismouting, runs through the plug that sets up in anchor clamps originally, the dismouting is pulled out the core and is inserted and shut and connect in the inner chamber, the dismouting is pulled out the core and is hollow structure, dismouting is pulled out core inside and is provided with plug-type disassembly body. The clamp body is a bearing part of the sealing ring, when the sealing ring is installed, the sealing ring is sleeved on a clamping groove which is slightly wider than the sealing ring, the part of the sealing ring corresponding to a clamping opening of the sealing ring is pressed into an inner cavity of the clamp body, and the pressing state of the sealing ring is maintained through inserting and closing a dismounting and pulling core of the inner cavity of the clamp body. When the clamp body is inserted into the plunger pump, the sealing ring can be carried into the plunger pump. Because the distance between the clamping groove and the tail of the clamp body is known, and the depth of the installation position of the sealing ring is known, the relative position of the sealing ring and the installation position can be adjusted by adjusting the depth of the clamp body entering the plunger pump, so that the sealing ring corresponds to the installation position. The core is disassembled and assembled, the sealing ring with elasticity is recovered to the original state and enters the installation position to realize quick installation, and the clamp body is disassembled again to finish the quick installation of the sealing ring;

when the sealing ring in the plunger pump needs to be dismantled, the dismounting pull core is only required to be inserted into the plunger pump, the push-pull dismounting mechanism is utilized to realize fixation and contraction of the sealing ring to be dismantled, and then the dismounting pull core carrying the sealing ring is pulled out to complete the dismounting.

The dismounting device for the plunger pump sealing ring is convenient to operate, does not need to be operated by multiple persons in a matching mode, avoids knocking and other operations on parts in the dismounting process, avoids the parts from being damaged, and can be convenient and fast. The disassembly and assembly work of the sealing ring is efficiently and reasonably completed.

Preferably, the clamp body comprises a front section, a middle section and a rear section, the clamping groove is arranged between the front section and the middle section, and the outer wall of the middle section is provided with scale marks. The anchor clamps body is the thin wall spare, forms the clamping groove of indent between anterior segment and the middle section, through set up the scale mark that digit increases along anterior segment to back end direction on the middle section for operating personnel can judge the depth degree in clamping groove according to the scale mark when using dismouting device to carry out the sealing washer installation, so that compare the degree of depth of mounted position, make the sealing washer correspond with the mounted position, improve the installation effectiveness. In this embodiment, the rear section is a base section, and when the step surface of the rear section abuts against the bottom surface of the plunger pump, the top surface of the front section abuts against the deepest section of the plunger pump.

Preferably, the clamping groove is a ring groove, and the depth of the clamping groove is greater than the thickness of the section of the sealing ring. The annular clamping groove is used for installing the sealing ring, and compared with the situation that the groove is only formed in the clamping opening of the sealing ring to enable the sealing ring to be attached to the clamp body, the depth of the clamping groove is larger than the section thickness of the sealing ring, so that when the sealing ring enters the plunger pump along with the clamp body, the outer contour of the clamping groove can not exceed the outer diameter of the middle section of the clamping groove to cause the sealing ring to scrape the inner wall of the plunger pump, even the outer contour of the clamping groove collides with the sealing ring groove before the installation position to cause damage of parts.

Preferably, the outer contour line of the cross section of the detachable core drawer is of a runway structure, and the detachable core drawer is inserted into the semi-open clamping opening. The half open-type clamping opening is used for bringing the bending contraction of the sealing ring into the clamp body, so that the clamp body can smoothly carry the sealing ring when entering the interior of the plunger pump. The dismouting is pulled out the core and is compressed tightly the piece as the sealing washer, and runway type structure can realize the compressing tightly of maximum to the sealing washer, can guarantee that the sealing washer is stably cup jointed in the clamping groove before reacing the target mounted position, only pulls out when the dismouting and resumes elastic deformation from the back to the card realizes swift accurate installation in the mounting groove.

Preferably, the push-pull disassembly mechanism comprises a push rod arranged inside the disassembly and assembly pull core, and a pressure spring is arranged between the top end of the push rod and the disassembly and assembly pull core; the push rod is connected with the dismounting pull core in a sliding way; the push rod is hinged to the push rod, the movable piece is arranged on the side wall of the dismounting core, and one end, far away from the push rod, of the push rod is hinged to the movable piece. The side wall of the dismounting core is of a hollow structure and is provided with a movable sheet which is unfolded towards the side. An operator pushes a push rod in the dismounting pull core, so that a push rod with one end arranged on the movable sheet is unfolded towards the lateral upper side, the movable sheet is further pushed to be unfolded in an umbrella cover shape, and a sealing ring to be dismounted is inserted and combined through the tail end of the movable sheet, so that the first work of positioning and connection in the dismounting process is realized; the push rod is released from pushing, the pressure spring recovers deformation, the push rod drives the movable piece to draw close to the axis of the dismounting core-pulling, the sealing ring connected to the tail end of the movable piece in an inserting mode contracts and is separated from the original mounting groove, and the dismounting core-pulling is pulled out to finish the dismounting of the sealing ring.

Preferably, the outer wall of the dismounting pull core is provided with scale marks. The scale mark of core outer wall can be pulled out in the dismouting to the supplementary operating personnel and accomplish sealing washer dismantlement work, can judge the relative position relation of movable piece and waiting to dismantle the sealing washer through the scale, and then ensure that the movable piece can accurately insert to close and wait to dismantle the sealing washer.

Preferably, the free end of the movable sheet far away from the push rod is provided with an inserting tip. The splicing tip is used for ensuring that the movable sheet is stably connected with the sealing ring to be disassembled, the sealing ring is used as an elastic piece, the splicing tip extrudes the sealing ring to improve the connection strength of the movable sheet and the sealing ring, when the movable sheet is drawn back along with the push rod, the sealing ring can be separated from the original installation position, and the plunger pump can be smoothly separated from the plunger pump along with the dismounting and mounting core.

The invention also discloses a seal ring dismounting method of the dismounting device for the plunger pump seal ring, which comprises the following steps:

when the sealing ring is installed, the sealing ring sleeved in the clamping groove is pressed into the inner cavity through the sealing ring clamping opening, the dismounting pulling core is inserted into the inner cavity from the rear-section opening and is pressed on the sealing ring, the dismounting pulling core and the clamp body are inserted into the plunger pump, the insertion depth of the clamp body is adjusted according to the depth of the installation groove of the plunger pump, and the dismounting pulling core is pulled out after the clamping groove corresponds to the installation groove;

when dismantling the sealing washer, in pulling out the core and inserting the plunger pump with the dismouting, according to the depth adjustment dismouting of waiting to dismantle the sealing washer and pulling out the depth of insertion of core, when the free end degree of depth of activity piece surpassed the degree of depth of sealing washer, promote the dismouting and pull out the inside push rod of core, the push rod expandes the activity piece, the most advanced puncture of grafting that the activity piece free end set up is inserted and is closed and wait to dismantle the sealing washer, reset the activity piece and drive and wait to dismantle the sealing washer shrink through the pressure spring after the sealing washer is waited to dismantle in the activity piece connection, pull out the dismouting that has the sealing washer from.

The mounting method and the dismounting method are realized by dismounting and mounting the pull core, and are convenient and quick.

Therefore, the invention has the following beneficial effects: (1) the clamp body provided with the clamping groove is matched with the dismounting pull core connected to the clamp body in an inserting manner, so that the accurate positioning and the quick installation of the sealing ring can be realized; (2) fixing and contracting the sealing ring to be disassembled by using a push-pull type disassembling mechanism, and then, removing the disassembling pull core carrying the sealing ring to complete the disassembling of the sealing ring; (3) the dismounting core drawer with the runway-shaped outer contour line of the cross section can enable the sealing ring pressed into the semi-open type clamping opening to be completely attached to the inner cavity of the clamp body, so that the sealing ring is tightly matched with the clamping groove, and the smoothness of the dismounting core drawer entering the interior of the plunger pump is ensured; (4) the pressure spring is matched with the push rod to realize the opening and closing action of the movable sheet, so that the sealing ring to be disassembled is fixed and folded conveniently and efficiently, and the disassembling work of the sealing ring is further completed; (5) the dismouting device structure is exquisite, and the function is abundant, and the simple operation can realize the dismouting of sealing washer by accurate efficient.

Drawings

Fig. 1 is a schematic structural view of a cylinder type brake master cylinder in the related art.

Fig. 2 is a schematic structural view of a jig body in embodiment 1.

Fig. 3 is a cross-sectional view taken at a-a in fig. 2.

Fig. 4 is a schematic structural view of the core pulling assembly shown in fig. 3.

Fig. 5 is a working state diagram of the dismounting core-pulling in fig. 3 in the dismounting work of the sealing ring.

In the figure: 1. the clamp comprises a clamp body, 101, an inner cavity, 11, a front section, 12, a middle section, 13, a rear section, 2, a clamping groove, 21, a sealing ring clamping opening, 3, a dismounting core, 31, a movable sheet, 32, a plug tip, 4, a push-pull dismounting mechanism, 41, a push rod, 42, a pressure spring, 43 and a push rod.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

As shown in fig. 2 and 3, a device and a method for assembling and disassembling a plunger pump seal ring includes: the clamp comprises a clamp body 1, wherein the clamp body 1 is of a sleeve structure and comprises a cylinder wall and an inner cavity 101, a clamping groove 2 is formed in the cylinder wall, and a sealing ring clamping opening 21 is formed in the clamping groove 2; the core 3 is inserted into the inner cavity 101, the core 3 is of a hollow structure, and the inner cavity 101 of the core 3 is provided with a push-pull type dismounting mechanism 4. The clamp body 1 is a bearing part of the sealing ring, when the sealing ring is installed, the sealing ring is sleeved on the clamping groove 2 which is slightly wider than the sealing ring, the part of the sealing ring corresponding to the clamping opening 21 of the sealing ring is pressed into the inner cavity 101 of the clamp body 1, and the pressing state of the sealing ring is maintained through the dismounting pull core 3 inserted in the inner cavity 101 of the clamp body 1. When the clamp body 1 is inserted into the plunger pump, the sealing ring can be carried into the plunger pump. Because the distance between the clamping groove 2 and the tail part of the clamp body 1 is known, and the depth of the installation position of the sealing ring is known, the relative position of the sealing ring and the installation position can be adjusted by adjusting the depth of the clamp body 1 entering the plunger pump, so that the sealing ring corresponds to the installation position. The dismounting core 3 is pulled away, the sealing ring with elasticity is recovered to the original state and enters the mounting position to realize quick mounting, and the clamp body 1 is pulled away at the moment to finish the quick mounting of the sealing ring;

when the sealing ring in the plunger pump needs to be dismantled, the dismounting pull core 3 is only needed to be inserted into the plunger pump, the push-pull dismounting mechanism 4 is utilized to realize the fixation and the contraction of the sealing ring to be dismantled, and then the dismounting pull core 3 carrying the sealing ring is pulled out to complete the dismounting.

The clamp body 1 comprises a front section 11, a middle section 12 and a rear section 13, the clamping groove 2 is arranged between the front section 11 and the middle section 12, and scale marks are arranged on the outer wall of the middle section 12. Anchor clamps body 1 is the thin wall spare, forms the clamping groove 2 of indent between anterior segment 11 and the middle section 12, through set up the scale mark that digit increases along anterior segment 11 to 13 directions in back end on middle section 12 for operating personnel can judge the depth degree in clamping groove 2 according to the scale mark when using dismouting device to carry out the sealing washer installation, so that compare the degree of depth of mounted position, make the sealing washer correspond with the mounted position, improve the installation effectiveness. The clamping groove 2 is a ring groove, and the groove depth of the clamping groove 2 is larger than the section thickness of the sealing ring. Annular clamping groove 2 is used for installing the sealing washer, compares in only setting up the recess in sealing washer clamping mouth 21 department and makes the sealing washer attach to anchor clamps body 1 outward, and 2 groove depths in clamping groove are greater than sealing washer cross-section thickness and can guarantee that the sealing washer gets into the plunger pump when inside along with anchor clamps body 1, can not lead to the sealing washer scraping plunger pump inner wall because of the outline surpasss middle section 12 external diameters, and the collision is even deepened and is caused spare part impaired to the sealing washer groove before the mounted position, has effectively improved the security in the installation.

As shown in fig. 3, the outer contour line of the cross section of the detachable core 3 is a track-type structure, and the detachable core 3 is inserted into the semi-open clamping opening. The half open-type clamping opening is used for bringing the bending contraction of the sealing ring into the clamp body 1, so that the clamp body 1 can smoothly carry the sealing ring when entering the interior of the plunger pump. The dismounting pull core 3 is used as a sealing ring pressing piece, the runway-type structure can realize the maximum pressing of the sealing ring, the sealing ring can be ensured to be stably sleeved in the clamping groove 2 before reaching a target mounting position, only the dismounting pull core 3 is pulled away and then elastic deformation is recovered, and the dismounting pull core is clamped into the mounting groove to realize quick and accurate mounting.

As shown in fig. 4 and 5, the push-pull type detaching mechanism 4 includes a push rod 41 disposed inside the detaching core 3, and a pressure spring 42 is disposed between the top end of the push rod 41 and the detaching core 3; the push rod 41 is connected with the dismounting pull core 3 in a sliding way; the push rod 41 is hinged with a push rod 43, the side wall of the dismounting core 3 is provided with a movable sheet 31, and one end of the push rod 43, which is far away from the push rod 41, is hinged with the movable sheet 31. The side wall of the dismounting core 3 is a hollow structure and is provided with a movable sheet 31 which is unfolded towards the side. An operator pushes the push rod 41 in the dismounting pull core 3, so that a push rod 43 with one end arranged on the movable sheet 31 can be unfolded towards the lateral upper side, the movable sheet 31 is further pushed to be unfolded like an umbrella cover, and a sealing ring to be dismounted is inserted and combined through the tail end of the movable sheet, so that the first work of positioning and connection in the dismounting process is realized; the pushing of the pushing rod 41 is released, the pressure spring 42 recovers deformation, the pushing rod 43 drives the movable plate 31 to approach the axis of the dismounting pull-out core 3, the sealing ring inserted and connected at the tail end of the movable plate 31 contracts and is separated from the original mounting groove, and the dismounting of the sealing ring can be completed by pulling out the dismounting pull-out core 3. The outer wall of the dismounting pull core 3 is provided with scale marks. The scale mark of 3 outer walls of dismouting pull core can assist operating personnel to accomplish sealing washer dismantlement work, can judge the relative position relation of movable piece 31 and waiting to dismantle the sealing washer through the scale, and then ensure that movable piece 31 can accurately insert and close and wait to dismantle the sealing washer. The free end of the movable piece 31 away from the push rod 41 is provided with a plugging tip 32. The plug tip 32 is used for ensuring that the movable sheet 31 and the sealing ring to be disassembled are stably connected, the sealing ring is used as an elastic part, the plug tip 32 extrudes the sealing ring to improve the connection strength of the seal ring and the movable sheet, when the movable sheet 31 is drawn back along with the push rod 43, the seal ring can be separated from the original installation position, and the plug pump can be smoothly separated from the plunger pump along with the disassembly and assembly of the pull core 3.

when the sealing ring is installed, an operator vertically presses down the part, corresponding to the sealing ring clamping opening 21, of the sealing ring sleeved in the clamping groove 2 by utilizing the elasticity of the sealing ring, because the lower part of the section of the sealing ring is in a cavity unsupported state, the part, corresponding to the sealing ring clamping opening 21, of the sealing ring is pressed into the inner cavity 101, the dismounting pull core 3 is inserted into the inner cavity 101 from the opening of the rear section 13 and presses the sealing ring, the dismounting pull core 3 and the clamp body 1 are inserted into the plunger pump, the insertion depth of the clamp body 1 is adjusted according to the depth of the installation groove of the plunger pump, and the dismounting pull core 3 is pulled out after the clamping groove 2 corresponds to the installation groove;

when dismantling the sealing washer, in pulling out core 3 with the dismouting and inserting the plunger pump, according to the depth adjustment dismouting of waiting to dismantle the sealing washer and pulling out the depth of insertion of core 3, when the free end degree of depth of activity piece 31 surpassed the degree of depth of sealing washer, promote the dismouting and pull out the inside push rod 41 of core 3, push rod 43 expandes activity piece 31, the grafting pointed end 32 puncture that the free end of activity piece 31 set up is inserted and is closed waiting to dismantle the sealing washer, connect when activity piece 31 and wait to dismantle behind the sealing washer through pressure spring 42 reset activity piece 31 and drive and wait to dismantle the sealing washer shrink, pull out the dismouting that has the sealing washer from plunger pump inside at last and pull out. In this embodiment, the dismouting is pulled out core 3 and is adopted the aluminum alloy material, and intensity is higher and plasticity is good, and the movable plate 31 degree of difficulty that forms at the processing surface fretwork is low.

Example 2

Different from embodiment 1, the hinge structure is cancelled at the joint of the movable plate 31 and the dismounting core 3 in this embodiment to directly utilize the elastic characteristic of aluminum alloy to convert the movable plate 31 into a shifting plate, and the shifting plate can be pushed by the push rod 43 and can perform fixing work on the sealing ring, when the push rod 41 returns to the initial position, the movable plate 31 can return to the initial position of the attaching dismounting core 3 by virtue of elasticity, and then groove-removing retraction work on the sealing ring is completed, so as to realize quick dismounting of the sealing ring.

The mounting method and the dismounting method are both realized by using the dismounting pull core 3, the mounting and dismounting device is convenient and quick, the dismounting device disclosed by the invention is exquisite in structure, rich in functions and convenient and fast to operate, and the dismounting of the sealing ring can be accurately and efficiently realized.

In addition to the above embodiments, the technical features of the present invention can be re-selected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention which are not described in detail should be regarded as the specific embodiments of the present invention and are within the protection scope of the present invention.

Claims

1. The utility model provides a dismouting device of plunger pump sealing washer which characterized in that includes:

the clamp comprises a clamp body (1), wherein the clamp body (1) is of a sleeve structure and comprises a cylinder wall and an inner cavity (101), a clamping groove (2) is formed in the cylinder wall, and a sealing ring clamping opening (21) is formed in the clamping groove (2);

the core (3) is pulled out in the dismouting, runs through the plug that sets up in anchor clamps body (1), core (3) is pulled out in the dismouting plug and is connected in inner chamber (101), core (3) are hollow structure in the dismouting, be provided with plug-type disassembly body (4) in the dismouting plug (3).

2. The device for disassembling and assembling the sealing ring of the plunger pump according to claim 1, wherein the fixture body (1) comprises a front section (11), a middle section (12) and a rear section (13), the clamping groove (2) is disposed between the front section (11) and the middle section (12), and the outer wall of the middle section (12) is provided with scale marks.

3. The device for disassembling and assembling the sealing ring of the plunger pump according to claim 1, characterized in that the clamping groove (2) is a ring groove, and the depth of the clamping groove (2) is larger than the thickness of the cross section of the sealing ring.

4. The device for disassembling and assembling the sealing ring of the plunger pump according to claim 1, characterized in that the outer contour line of the cross section of the disassembling and assembling core (3) is a track-type structure, and the disassembling and assembling core (3) is inserted into the sealing ring clamping opening (21).

5. The dismounting device for the sealing ring of the plunger pump according to any one of claims 1 to 4, characterized in that the push-pull dismounting mechanism (4) comprises a push rod (41) arranged inside the dismounting core (3), and a pressure spring (42) is arranged between the top end of the push rod (41) and the dismounting core (3); the push rod (41) is connected with the dismounting pull core (3) in a sliding way; the push rod (41) is hinged to a push rod (43), the side wall of the dismounting pull core (3) is provided with a movable sheet (31), and one end, far away from the push rod (41), of the push rod (43) is hinged to the movable sheet (31).

6. The device for disassembling and assembling the sealing ring of the plunger pump according to claim 5, characterized in that the outer wall of the disassembling and assembling core (3) is provided with scale marks.

7. The device for disassembling and assembling the sealing ring of the plunger pump according to claim 5, characterized in that the free end of the movable piece (31) far away from the push rod (41) is provided with a plugging tip (32).

8. A method for dismounting a device for dismounting a sealing ring of a plunger pump, which adopts the device for dismounting a sealing ring of a plunger pump as claimed in claims 1-6, and comprises the following steps:

when the sealing ring is installed, the sealing ring sleeved in the clamping groove (2) is pressed into the inner cavity (101) through the sealing ring clamping opening (21), the dismounting pulling core (3) is inserted into the inner cavity (101) from the opening of the rear section (13) and is pressed on the sealing ring, the dismounting pulling core (3) and the fixture body (1) are inserted into the plunger pump, the insertion depth of the fixture body (1) is adjusted according to the mounting groove depth of the plunger pump, and the dismounting pulling core (3) is pulled out after the clamping groove (2) corresponds to the mounting groove;

when dismantling the sealing washer, in pulling out core (3) with the dismouting and inserting the plunger pump, according to the depth adjustment dismouting of waiting to dismantle the sealing washer and pull out the depth of insertion of core (3), when the free end degree of depth of activity piece (31) surpassed the degree of depth of sealing washer, promote dismouting and pull out the push rod (41) of core (3) inside, push rod (43) expand activity piece (31), the sealed washer of waiting to dismantle is inserted in grafting pointed end (32) puncture that activity piece (31) free end set up, dismantle behind the sealing washer through pressure spring (42) activity piece (31) and drive and wait to dismantle the sealing washer shrink when activity piece (31) connecting band, pull out dismouting that has the sealing washer from plunger pump inside at last and pull out core (3).