CN215660018U - Puller for disassembling diaphragm back plate of metering pump - Google Patents

Abstract

The utility model discloses a puller for disassembling a metering pump diaphragm back plate, and relates to a puller. Including drawing horse base and at least one and installing the drawing horse lead screw on drawing horse base, still set up on drawing horse base and supply the drawing horse lead screw to run through the male through-hole that runs through, be provided with a swivel nut on each drawing horse lead screw at least, the drawing horse lead screw is including inserting the screw portion that runs through in the through-hole and the spacing end edge of hooking on the diaphragm backplate, swivel nut and spacing end edge set up respectively in the both sides of drawing horse base to control spacing end again along drawing out the diaphragm backplate when making to compress tightly drawing horse base to the measuring pump casing through twisting swivel nut. The utility model has stable effect, effectively protects the puller, prolongs the service life of the puller to a greater extent, reduces the cost and has strong practicability.

Description

Puller for disassembling diaphragm back plate of metering pump

Technical Field

The utility model relates to a puller, in particular to a puller for disassembling a diaphragm back plate of a metering pump.

Background

In the long-term operation of the nuclear power station, the oil supplementing pipeline sealing element in the metering pump is gradually abraded along with the increase of the service life, so that the hydraulic oil in the hydraulic cavity flows back to the hydraulic oil tank, and the condition that the metering pump does not exert force or is insufficient in treatment is shown. In order to replace the seal in a metering pump, the diaphragm back plate of the metering pump must be removed. Due to the degeneration and the deterioration of substances such as hydraulic oil in the metering pump, a diaphragm back plate of the metering pump is blocked in the groove. Therefore, in the maintenance process of the metering pump, how to disassemble the diaphragm back plate becomes a key. The metering pump diaphragm back plate is in an umbrella-shaped concave shape, the surface of the metering pump diaphragm back plate has no detachable force points, four square holes which are arranged in a cross shape are only arranged on the inner ring, and the size of each square hole is 7 x 10 mm. Therefore, in order to facilitate the maintenance of the metering pump, a special tool for verification needs to be developed to realize the detachment of the diaphragm back plate of the metering pump in the case of dead locking.

In a utility model of a frame-type bag cage puller disclosed in patent No. CN201821139720.6, the puller body includes a puller lead screw, a puller base and a puller claw for pulling the bag cage, the puller claw is movably connected to the puller base, the puller base is screwed on the puller lead screw, and a puller bolt matched with the puller base is also screwed on the puller lead screw; the braced frame includes spherical lever portion and a plurality of supporting leg, and the supporting leg links together through horizontal support, and the middle part of horizontal support be provided with the trompil of drawing a horse lead screw complex, be provided with on the spherical lever portion with drawing a horse lead screw complex screw hole, the upper end of drawing a horse lead screw by supreme trompil of running through down, connect soon in the screw hole, this utility model mainly used dust removal sack pull out the change. Compared with a dust removal cloth bag, the diaphragm back plate is high in hardness and large in mass, and after the diaphragm back plate is clamped in a metering pump, a conventional single-rod puller does not adapt to the disassembly of the diaphragm back plate, and the condition that a puller screw rod is broken can occur. In addition, this utility model discloses in the application of force pole that adopts be used for the pulling to draw the in-process that the horse lead screw rises, and is not meticulous enough to the control of drawing the horse lead screw, the rising distance of lead screw is not well controlled, leads to drawing the horse lead screw atress unbalanced, shortens its metal fatigue limit, influences device life.

SUMMERY OF THE UTILITY MODEL

The utility model provides a puller for disassembling a diaphragm back plate of a metering pump, which is used for disassembling the diaphragm back plate on the metering pump.

The technical scheme for solving the problems is as follows: the utility model provides a puller for dismantling measuring pump diaphragm backplate, includes puller base and at least one and installs the puller lead screw on the puller base, still set up on the puller base and supply the puller lead screw to run through the male through-hole that runs through, be provided with a swivel nut on each puller lead screw at least, the puller lead screw is including inserting the screw portion that runs through in the through-hole and the spacing end edge of hooking on the diaphragm backplate, swivel nut and spacing end edge set up the both sides at the puller base respectively to make and control spacing end edge again when rotating swivel nut and compressing tightly puller base to the measuring pump casing and pull out the diaphragm backplate.

Further, the pore wall that runs through the through-hole is smooth, and the diameter that runs through the through-hole is greater than the diameter of puller lead screw, so that the puller lead screw can also move in running through the through-hole when inserting the through-hole, runs through the through-hole and can not hinder the removal formation of puller lead screw yet, changes the spacing end of puller lead screw one end and follows the distance to the puller base.

Furthermore, the outer diameter of the rotary nut is larger than the diameter of the through hole, the rotary nut can limit the puller wire rod at the through hole, and the puller wire rod tightly pulls the diaphragm back plate when the rotary nut rotates so as to pull out the diaphragm back plate.

Furthermore, the puller base is arranged to be a cross truss, the four ends of the puller base extending out of the cross truss structure are lapped on the shell of the metering pump, and the puller screw rod is convenient to disassemble the diaphragm back plate on the shell of the metering pump by means of force. And the puller base of the cross truss structure can reduce the material consumption and the cost on the premise of ensuring the structural strength of the base to the maximum extent.

Further, still including setting up the guide sleeve of the central point department of drawing the horse base, guide sleeve and spacing end edge are located the same side of drawing the horse base. The guide sleeve is inserted into the through hole in the middle of the diaphragm backboard, so that when the limiting end edge of the puller screw rod is inserted into the clamping groove in the side wall of the through hole in the middle of the diaphragm backboard, the guide sleeve can limit the limiting end edge to be inserted into the clamping groove, the limiting end edge cannot be easily separated from the clamping groove in the diaphragm backboard, and the normal pulling function of the puller screw rod is guaranteed.

Further, the outer wall of the guide sleeve is attached to the side wall of the wire rod part. The guide sleeve clamps the screw rod part through the hole wall at the middle through hole of the outer wall matched with the diaphragm backboard, so that the screw rod part is prevented from shaking and deviating.

Furthermore, an embedding groove for embedding one end of the guide sleeve is further formed in the center of the puller base. When the puller works, the end of the guide sleeve is embedded into the embedding groove so as to further stabilize the position of the guide sleeve and prevent the puller base or the puller screw rod from being bent due to deviation.

Furthermore, the puller base and the puller screw rod are both made of hard alloy materials, and the puller base and the puller screw rod made of the hard alloy materials have the characteristic of high hardness, are not easy to deform and ensure the using effect of the puller.

Furthermore, friction lines are further arranged on the surface, contacting the metering pump shell, of the puller base. The puller base is tightly attached to the metering pump shell through the puller working, and the friction lines can prevent the puller base and the metering pump shell from generating relative motion, so that the puller screw rod and the guide sleeve are deformed and lose efficacy.

The utility model has the beneficial effects that: the utility model relates to a puller for disassembling a diaphragm back plate of a metering pump. The utility model discloses an adopt the drawing horse base of cross truss structure many drawing horse lead screws of cooperation in order to dismantle the diaphragm backplate, when pulling the diaphragm backplate, many drawing horse lead screws send forth force simultaneously, and the pulling distance of drawing horse lead screw is relatively meticulous under the control of swivel nut in addition, and the atress can not increase suddenly when can guaranteeing to draw horse lead screw pulling diaphragm backplate, but slowly increases progressively under swivel nut's control, still protected drawing horse itself when guaranteeing to take off the diaphragm backplate to promote the life of drawing horse.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the utility model. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

Fig. 1 is a schematic overall structural diagram of a puller for detaching a diaphragm back plate of a metering pump according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a puller base for detaching a back plate of a diaphragm of a metering pump according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a puller base for detaching a back plate of a diaphragm of a metering pump according to another embodiment of the present invention;

fig. 4 is a schematic structural view of a screw rod of a puller for detaching a diaphragm back plate of a metering pump according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a screw rod of a puller for detaching a diaphragm back plate of a metering pump according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a diaphragm back plate of a puller for detaching a diaphragm back plate of a metering pump according to an embodiment of the present invention;

fig. 7 is a schematic diagram of an operating principle of a puller for detaching a diaphragm back plate of a metering pump according to an embodiment of the present invention.

The device comprises a puller base 1, a puller screw rod 2, a through hole 3, a rotary nut 4, a screw rod part 5, a limiting end edge 6, a guide sleeve 7, an embedding groove 8, a friction line 9, a metering pump shell 10 and a diaphragm back plate 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Referring to fig. 1, fig. 2, fig. 4, and fig. 6, a puller for detaching a back plate of a diaphragm of a metering pump according to an embodiment of the present invention is disclosed. In this embodiment, the puller base 1 is provided as a cross truss, four rod ends of the cross truss extend out of the diaphragm back plate 11, and the four rod ends of the cross truss are provided with the friction lines 9. In addition, the middle position of the puller base 1 is uniformly distributed with four through holes 3 around the center circumference of the puller base 1, and four puller screws 2 are respectively inserted into the four through holes 3.

The major diameter of the thread of the puller screw rod 2 is smaller than the diameter 1mm of the through hole 3, and the inner wall of the through hole 3 is smooth.

The puller lead screw 2 comprises a lead screw part 5 of a threaded shaft rod structure and a limiting end edge 6 of a block structure, wherein the limiting end edge 6 is arranged at one end of the lead screw part 5, the limiting end edge 6 and the lead screw part 5 are integrally formed, a rotating nut 4 is further arranged on the lead screw part 5, the rotating nut 4 is in threaded connection with the lead screw part 5, and the rotating nut 4 and the limiting end edge 6 are respectively positioned on two sides of the puller base 1.

The side surface of the puller base 1 facing the limiting end edge 6 is also provided with an embedding groove 8, the embedding groove 8 is arranged at the central position of the puller base 1, and the embedding groove 8 is arranged to be a circular groove; the width, the inner diameter and the outer diameter of the embedding groove 8 are equal to the wall thickness, the inner diameter and the outer diameter of the guide sleeve 7.

The specific working principle of the embodiment is explained below, firstly, the four puller wires 2 are respectively inserted into the clamping groove at the position of the through hole in the middle of the diaphragm backboard 11 by the limiting end edges 6, then the guide sleeve 7 is inserted into the middle of the enclosed area of the four puller wires 2, and when the guide sleeve 7 is inserted into the through hole in the middle of the diaphragm backboard 11, the outer side wall of the guide sleeve 7 is matched with the hole wall of the through hole in the middle of the diaphragm backboard 11 to clamp each puller wire 2, so that the puller wires 2 are kept in a clamping state with the diaphragm backboard 11.

Then the puller base 1 is installed, the screw rod parts 5 of the four puller screw rods 2 are respectively inserted into the four through holes 3 on the puller base 1, at the moment, the rotating nuts 4 on the screw rod parts 5 are screwed through tools such as a wrench and the like, so that the puller base 1 and the limiting end edge 6 are gradually close to each other, but the puller base 1 is abutted against the shell of the metering pump by the four extending ends, therefore, the puller screw rods 2 are really moved, and the diaphragm back plate 11 is pulled out by the aid of the puller screw rods 2.

Referring to fig. 1, fig. 3, fig. 5 and fig. 6, as another embodiment of the present invention, an inner wall thread that is connected with the puller screw rod 2 in a matching threaded manner is disposed on the hole wall of the through hole 3 in the present embodiment; one end of the screw rod part 5 is provided with a hinged part, a hinged through hole is arranged on the limiting end edge 6, so that the limiting end edge 6 is hinged and connected with the screw rod part 5, and the limiting end edge 6 rotates around the axis of the screw rod part 5.

Further, a first nut area is provided at the other end of the screw portion 5, and a second nut area is provided on the screw portion 5, both of which have the same shape as the outer peripheral shape of the rotating nut 4. And the second nut area and the limiting end edge 6 are positioned on the same side of the puller base 1, and the distance from the second nut area to the limiting end edge 6 is greater than the thickness of the diaphragm back plate 11. In addition, the length of the through hole on the puller base 1 (the thickness of the puller base 1) is also larger than the axial length of the nut area corresponding to the screw rod part 5; the diameter of the rod body of the threaded part on the screw rod part 5 is larger than that of the rod body of the nut area part (the large diameter of the nut).

The specific working method and principle of the embodiment are further explained as follows: in this embodiment, insert 11 middle part through-holes department of diaphragm backplate with the one end of spacing end edge 6 with four puller lead screws 2, insert the draw-in groove on the through-holes lateral wall of middle part with spacing end edge 6, insert the guide sleeve 7 in the middle of the enclosure region of four puller lead screws 2, when the guide sleeve 7 inserted the middle part through-hole on the diaphragm backplate 11, the lateral wall of guide sleeve 7 still cooperates the pore wall of 11 middle part through-holes of diaphragm backplate to press from both sides tight each puller lead screw 2, make puller lead screw 2 keep with the chucking state of diaphragm backplate 11.

Then the puller base 1 is installed, a tool is used for rotating the puller screw rod 2 at the second nut area on the puller screw rod 2, the puller screw rod 2 is inserted into the through hole 3 on the puller base 1 in a threaded connection mode, and after one end of the puller screw rod 2 penetrates out of the puller base 1 to the other side of the puller base 1, the puller screw rod 2 is screwed at the first nut area on the puller screw rod 2 by using the tool. The four screw rods 2 are rotated one by one to enable the screw base 1 to move towards the metering pump until the screw base 1 abuts against the metering pump shell 10, and the friction grains 9 arranged on the screw base 1 enable the screw base 1 not to slide at the metering pump shell 10 by means of the abutting force of the screw base 1. And continuously screwing the puller screw rod 2, so that the puller screw rod 2 pulls the diaphragm back plate 11, and the diaphragm back plate 11 is pulled down and detached.

In this embodiment, the screw rod 2 and the base 1 are integrally made of hard alloy material, so as to improve the deformation resistance of the screw device.

Where not mentioned above, all are applicable to the prior art.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. The utility model provides a draw horse for dismantling measuring pump diaphragm backplate which characterized in that: comprises a puller base (1) and at least one puller screw rod (2) arranged on the puller base (1), the puller base (1) is also provided with a through hole (3) for the puller screw rod (2) to penetrate and insert, each puller screw rod (2) is at least provided with a rotating nut (4), the outer end of the puller base (1) extends to the position of a metering pump shell (10) outside a diaphragm back plate (11), the puller lead screw (2) comprises a lead screw part (5) inserted into the through hole (3) and a limiting end edge (6) hooked on the diaphragm back plate (11), the rotating nut (4) and the limiting end edge (6) are respectively arranged at two sides of the puller base (1), so that the puller base (1) is pressed on the metering pump shell (10) by screwing the rotary nut (4), and the limiting end edge (6) is controlled to pull out the diaphragm back plate (11).

2. The puller for disassembling a diaphragm back plate of a metering pump according to claim 1, wherein: the hole wall of the through hole (3) is smooth, and the diameter of the through hole (3) is larger than that of the puller screw rod (2).

3. The puller for disassembling a diaphragm back plate of a metering pump according to claim 1, wherein: the outer diameter of the rotating nut (4) is larger than the diameter of the through hole (3).

4. The puller for disassembling a diaphragm back plate of a metering pump according to claim 1, wherein: the puller base (1) is arranged to be a cross truss.

5. The puller for disassembling a diaphragm back plate of a metering pump according to claim 1, wherein: the tool is characterized by further comprising a guide sleeve (7) arranged at the center of the tool base (1), wherein the guide sleeve (7) and the limiting end edge (6) are located on the same side of the tool base (1).

6. The puller for disassembling a diaphragm back plate of a metering pump according to claim 5, wherein: the outer wall of the guide sleeve (7) is attached to the side wall of the wire rod part (5).

7. The puller for disassembling a diaphragm back plate of a metering pump according to claim 6, wherein: the central position of the puller base (1) is also provided with an embedding groove (8) for embedding one end of the guide sleeve (7).

8. The puller for disassembling a diaphragm back plate of a metering pump according to claim 1, wherein: the puller base (1) and the puller screw rod (2) are both made of hard alloy materials.

9. The puller for disassembling a diaphragm back plate of a metering pump according to claim 4, wherein: the surface of the puller base (1) contacting the metering pump shell (10) is also provided with friction lines (9).

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