Three-screw pump assembly tool

Abstract

The utility model provides a three-screw pump assembly tool. The three-screw pump assembly tool comprises a supporting base, a plurality of fixing plates and connecting assemblies, wherein the fixing plates and the connecting assemblies are sequentially stacked in the vertical direction. The bottom of the fixing plate located at the bottom is fixedly connected with the upper surface of the supporting seat, fixing holes are formed in the middles of the multiple fixing plates, the multiple fixing holes are coaxially formed, and the sizes of the fixing holes are gradually increased from top to bottom; the connecting assembly is used for limiting displacement of the multiple fixing plates in the horizontal direction and the vertical direction. According to the three-screw pump assembling tool, the supporting base enables the fixing plates to be erected, the fixing holes are formed in the middles of the fixing plates, the fixing holes can contain screws extending out of the pump sleeve, the fixing plates support the pump sleeve, a three-screw pump can be vertically placed, the fixing plates can erect the three-screw pump, workers can assemble parts conveniently, and the working efficiency is improved. When three-screw pumps of different types are assembled, different fixing plates are selected for supporting according to requirements, and the application range of the tool is widened.

Description

Technical Field

[0001] This utility model belongs to the field of screw pump manufacturing technology, specifically relating to a three-screw pump assembly fixture. Background Technology

[0002] A three-screw pump is a positive displacement screw pump. It utilizes the rotation of the screws to draw in and discharge liquid. The middle screw is the driving screw, driven by a prime mover, while the two outer screws are driven screws, rotating in the opposite direction to the driving screw. The meshing of the helical grooves on the driving and driven screws, along with their fit with the inner surfaces of the three holes in the bushing, creates several stages of dynamic sealing chambers between the pump inlet and outlet. These dynamic sealing chambers continuously move the liquid axially from the pump inlet to the pump outlet, gradually increasing the pressure of the pumped liquid. This results in a continuous, stable, axially moving pressurized liquid.

[0003] The assembly of a three-screw pump is generally carried out from the inside out and from top to bottom, starting with inserting the three screws into the pump sleeve. However, after the screws are inserted into the pump sleeve, the tail ends of the screws protrude outside the sleeve, making it impossible to place the screw and pump sleeve assembly upright. During assembly, the pump sleeve must be laid flat, requiring additional shims to secure it. This increases the difficulty of assembly and prolongs the assembly time of the three-screw pump. Utility Model Content

[0004] This utility model provides a three-screw pump assembly fixture, which aims to solve the technical problem that the pump sleeve cannot be placed upright after the pump sleeve and screw are assembled in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a three-screw pump assembly fixture, comprising:

[0006] Support base;

[0007] Multiple fixing plates are stacked sequentially in a vertical direction. The bottom of the bottom fixing plate is fixedly connected to the upper surface of the support base. Each fixing plate has a fixing hole in its center to accommodate the screw protruding from the pump sleeve of the three-screw pump. The fixing holes are coaxially arranged, and their size increases progressively from top to bottom.

[0008] A connecting component is disposed at the end of the plurality of fixed plates, the connecting component being used to limit the displacement of the plurality of fixed plates in the horizontal and vertical directions.

[0009] In a possible implementation, the support base comprises two support plates and two connecting plates, the two support plates are arranged in a spaced manner along a first horizontal direction, the two connecting plates are arranged in a spaced manner along a second horizontal direction, and the two ends of the connecting plates are connected to the two support plates respectively, the first horizontal direction and the second horizontal direction are perpendicular to each other; the upper surface of the connecting plate and the upper surface of the support plate are coplanar, and the two support plates and the two connecting plates enclose a rectangular avoiding space to accommodate the screw of the three-screw pump.

[0010] In a possible implementation, the support plate comprises two horizontal plates and a vertical plate arranged between the two horizontal plates, the vertical plate and the two horizontal plates are integrally formed, and the horizontal plate at the bottom is provided with a lifting hole.

[0011] In a possible implementation, the plurality of fixing plates gradually increase in size from top to bottom in the width direction of the fixing plates.

[0012] In a possible implementation, the fixing plate comprises a plurality of tooling plates arranged in a stacked manner from top to bottom, and a spacer is arranged between any two adjacent tooling plates; and the middle part of the tooling plate is provided with the fixing hole.

[0013] In a possible implementation, the plurality of fixing plates are of the same size in the length direction, and the top of one end of the fixing plate is provided with a connecting hole penetrating through the fixing plate in the up-down direction, and a plurality of connecting holes are arranged in a corresponding manner in the up-down direction.

[0014] The connecting assembly comprises a first screw rod and a first nut, the bottom end of the first screw rod is fixedly connected to the lowermost fixing plate, the top end of the first screw rod penetrates through the plurality of connecting holes and is screwed with the first nut, so as to clamp the plurality of fixing plates in the up-down direction by means of the first nut.

[0015] In a possible implementation, the end face of the fixing plate away from the fixing hole is provided with a limiting groove, and a plurality of limiting grooves are arranged in a corresponding manner in the up-down direction; the connecting assembly further comprises a second screw rod and a second nut, the bottom end of the second screw rod is rotatably connected to the support base, and the rotation axis is perpendicular to the up-down direction, the second screw rod is insertedly connected to the plurality of limiting grooves, and the second nut is screwed with the second screw rod, so as to clamp the plurality of fixing plates in the up-down direction.

[0016] In a possible implementation, the fixing hole is a splayed hole, and the shape of the fixing hole is matched with the structure formed by the three screw rods of the screw pump.

[0017] In a possible implementation, a buffer pad is arranged between any two adjacent fixing plates.

[0018] In a possible implementation, a side edge of the fixed plate is provided with a pump model identifier for displaying a model of the corresponding fixed plate.

[0019] Compared with the prior art, the three-screw pump assembly tool has one supporting tool, the supporting seat spaces a plurality of fixed plates, the middle part of the fixed plate is provided with a fixing hole, the fixing hole can accommodate the screw rod extending from the pump sleeve, the fixed plate supports the pump sleeve, so that the three-screw pump can be placed vertically, the fixed plate can support the three-screw pump, the assembly of parts by workers is facilitated, the connecting assembly connects the plurality of fixed plates together, the fixed plates are prevented from moving during assembly work, the fixing holes of the plurality of fixed plates are different in size, different fixed plates are selected for support according to requirements when assembling different types of three-screw pumps, the application range of the tool is increased, the tool has high practicability, corresponding tools for different types of three-screw pumps do not need to be manufactured, and the manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0021] Figure 1 Structure diagram of the three-screw pump assembly tool provided in the present application Figure 1

[0022] Figure 2 Structure diagram of the three-screw pump assembly tool provided in the present application Figure 1

[0023] Figure 3 Structure diagram of the three-screw pump assembly tool provided in the present application Figure 1

[0024] Structure diagram of the three-screw pump assembly tool provided in the present application Figure 4 Figure 1 Structure diagram of the three-screw pump assembly tool provided in the present application Figure 2

[0025] Figure 5 Structure diagram of the three-screw pump assembly tool provided in the present application Figure 1 Explanation of reference signs:

[0026] 1, supporting seat; 11, supporting plate; 111, horizontal plate; 112, vertical plate; 113, lifting hole; 12, connecting plate

[0027] 1, supporting seat; 11, supporting plate; 111, horizontal plate; 112, vertical plate; 113, lifting hole; 12, connecting plate

[0028] ​​​​2, fixed plate; 21, tool plate; 211, fixed hole; 22, spacer; 23, connecting hole; 24, limiting groove;

[0029] 3, connecting assembly; 31, first screw rod; 32, first nut; 33, second screw rod; 34, second nut;

[0030] 4, cushion. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0032] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0033] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple", "several" is two or more, unless otherwise explicitly specified and limited.

[0035] Please see Figures 1 to 5The three-screw pump assembly tool comprises a supporting seat 1, a plurality of fixed plates 2 sequentially stacked in the up-down direction and a connecting assembly 3. The bottom fixed plate 2 is fixedly connected to the upper surface of the supporting seat 1, the middle part of each of the plurality of fixed plates 2 is provided with a fixed hole 211 for accommodating the screw rod of the three-screw pump, the plurality of fixed holes 211 are coaxially arranged, and the size of the fixed hole 211 gradually increases from top to bottom; and the connecting assembly 3 is arranged at the end of the plurality of fixed plates 2 and is used for limiting the displacement of the plurality of fixed plates 2 in the horizontal direction and the up-down direction.

[0036] It should be noted that the fixed hole 211 is used for accommodating part of the three-screw pump sleeve, and the supporting seat 1 supports the fixed plate 2 in the air, so that when the three-screw pump is placed on the fixed plate 2, the protruding screw rod can extend into the fixed hole 211, and the three-screw pump can be vertically arranged, thereby facilitating the assembly of parts, the fixed plate 2 can support the pump sleeve, the existing cushion block is saved, the cost is reduced, and the preparation time is shortened.

[0037] It should be noted that the size of the fixed hole 211 gradually increases from top to bottom, so that the tool can be used for assembling three-screw pumps of different sizes, and according to the size of the screw rod of the three-screw pump, the fixed plate 2 corresponding to the fixed hole 211 of different sizes is selected, thereby increasing the application range of the tool.

[0038] In specific implementation, the bottom fixed plate 2 and the supporting seat 1 are fixedly welded, and the welding strength is high and the stability is strong.

[0039] Compared with the prior art, the three-screw pump assembly tool provided in the embodiment comprises a supporting tool, the supporting seat 1 supports the plurality of fixed plates 2 in the air, the middle part of the fixed plate 2 is provided with the fixed hole 211, the fixed hole 211 can accommodate the screw rod extending from the pump sleeve, the fixed plate 2 supports the pump sleeve, so that the three-screw pump can be vertically placed, the fixed plate 2 can support the three-screw pump, the assembly of parts by workers is facilitated, the sizes of the fixed holes 211 of the plurality of fixed plates 2 are different, different fixed plates 2 are selected according to requirements to support when assembling different types of three-screw pumps, the application range of the tool is increased, the tool has high practicability, different tools do not need to be made for different types of three-screw pumps, and the manufacturing cost is reduced.

[0040] In some embodiments, reference is made to Figure 2The support base 1 comprises two support plates 11 and two connecting plates 12. The two support plates 11 are arranged in a spaced manner along a first horizontal direction, and the two connecting plates 12 are arranged in a spaced manner along a second horizontal direction and are connected to the two support plates 11 at two ends, respectively. The first horizontal direction and the second horizontal direction are perpendicular to each other. The upper surface of the connecting plate 12 is coplanar with the upper surface of the support plate 11. The two support plates 11 and the two connecting plates 12 enclose a rectangular avoiding space to accommodate the screw rod of the three-screw rod pump.

[0041] In specific implementation, the support plate 11 and the connecting plate 12 are both channel steels. The channel steel structure is stable and has a large contact area, facilitating welding and fixing.

[0042] In some embodiments, referring to Figure 2 The support plate 11 comprises two horizontal plates 111 and a vertical plate 112 arranged between the two horizontal plates 111. The vertical plate 112 and the two horizontal plates 111 are integrally formed. The horizontal plate 111 located at the bottom is provided with a lifting hole 113. The horizontal plate 111 can increase the contact area of the support plate 11 with the ground, reduce the ground pressure, and increase the contact area of the support plate 11 and the fixing plate 2, increase the connection strength of the fixing plate 2 and the support base 1, and improve the use stability. The vertical plate 112 can arrange the two horizontal plates 111 in a spaced manner, so as to realize the aerial installation of the multiple fixing plates 2 and facilitate the assembly work. The lifting hole 113 can lift the tooling as a whole, facilitating the movement of the tooling.

[0043] In specific implementation, the horizontal plate 111 and the vertical plate 112 are integrally cast.

[0044] In some embodiments, referring to Figure 1 and Figure 4 The size of the multiple fixing plates 2 in the width direction thereof increases sequentially from top to bottom. Since the size of the fixing hole 211 increases sequentially from top to bottom, the size of the fixing plate 2 in the width direction thereof is only required to be greater than the size of the corresponding fixing hole 211. The sequential increase of the size of the multiple fixing plates 2 in the width direction thereof can reduce the overall weight of the fixing plate 2, reduce the pressure on the support base 1, and save the manufacturing cost and the manufacturing fund due to the small size of the fixing plate 2 at the top.

[0045] In specific implementation, the fixing plate 2 is a rectangular plate.

[0046] In some embodiments, referring to Figure 2 The fixing plate 2 comprises a plurality of tooling plates 21 stacked in sequence from top to bottom, and a spacer 22 is arranged between any two adjacent tooling plates 21; and the middle part of the tooling plate 21 is provided with a fixing hole 211. The spacer 22 arranged in the middle of the tooling plate 21 can reduce the friction between the two adjacent tooling plates 21, facilitating the movement of the adjacent tooling plates 21, so as to cooperate with the most suitable fixing hole 211 with the three-screw pump to be installed.

[0047] In specific implementation, the bottom of the spacer 22 is welded and fixed on the tooling plate 21, and the spacers 22 are arranged on both sides of the upper surface of the same tooling plate 21 to balance and support the tooling plate 21 above.

[0048] In some embodiments, referring to Figure 4 and Figure 5 The plurality of fixing plates 2 have the same size in the length direction of the fixing plates 2, the top of one end of the fixing plate 2 is provided with a connecting hole 23 penetrating through the fixing plate 2 in the up-down direction, and a plurality of connecting holes 23 are arranged in the up-down direction in correspondence; the connecting assembly 3 comprises a first screw 31 and a first nut 32, the bottom end of the first screw 31 is fixedly connected with the lowermost fixing plate 2, the top end of the first screw 31 penetrates through the plurality of connecting holes 23 and is screwed with the first nut 32 to clamp the plurality of fixing plates 2 in the up-down direction in cooperation with the first nut 32. The first screw 31 penetrates through the plurality of connecting holes 23 to fix the plurality of fixing plates 2 together, avoiding the movement of the fixing plate 2 during assembly, ensuring the normal assembly of the three-screw pump, and the first screw 31 can also be horizontally limited to limit the movement of the fixing plate 2 in the horizontal direction, the bottom of the first screw 31 is connected with the support base 1, and the first nut 32 is used to limit the displacement of the fixing plate 2 in the up-down direction, thereby improving the stability of the tooling.

[0049] Optionally, the first nut 32 is a butterfly nut, which has a force arm to facilitate the staff to twist the first nut 32, thereby increasing the convenience of use, and a hexagonal nut can also be selected.

[0050] In some embodiments, referring to Figure 5 and Figure 1The end face of the fixing plate 2 away from the fixing hole 211 is provided with a limiting groove 24, and a plurality of limiting grooves 24 are arranged correspondingly up and down; the connecting assembly 3 further comprises a second screw rod 33 and a second nut 34, the bottom end of the second screw rod 33 is rotatably connected with the support base 1, and the rotation axis is perpendicular to the up-down direction, the second screw rod 33 is inserted and matched with the plurality of limiting grooves 24, and the second nut 34 is screwed with the second screw rod 33, so as to clamp the plurality of fixing plates 2 up and down. In order to accelerate the movement of the fixing plate 2, the first screw rod 31 is arranged on one side to limit the up-down position of the plurality of fixing plates, and the second screw rod 33 is arranged on the other side to cooperate with the limiting groove 24 to limit the horizontal position, when the upper fixing plate 2 needs to be rotated, the second nut 34 is loosened, the second screw rod 33 swings outward to be separated from the limiting groove 24, and the plurality of fixing plates 2 can swing around the long axis of the first screw rod 31 until the required fixing plate 2 is exposed, and the upper fixing plate 2 does not affect the three-screw rod pump and the fixing of the fixing plate 2. Then the second screw rod 33 is reset to be inserted and matched with the remaining limiting grooves 24, and the second nut 34 abuts against the upper surface of the nearest fixing plate 2, so as to clamp and fix the remaining fixing plates 2, facilitate the rotation of the fixing plate 2, accelerate the assembly efficiency, and improve the use convenience.

[0051] It should be noted that the bottom of the horizontal plate 111 located on the upper side in the support plate 11 is provided with a screw sleeve, the rotation axis of the screw sleeve is perpendicular to the up-down direction, the internal hexagonal cylindrical head screw is inserted into the screw sleeve, and the internal hexagonal cylindrical head screw is fixed with the bottom end of the second screw rod 33, so that the second screw rod 22 can swing around the axis of the screw sleeve.

[0052] Specifically, the second nut 34 and the first nut 32 adopt the same nut, and can also be different.

[0053] In some embodiments, referring to Figure 5 The fixing hole 211 is an eight-shaped hole, and the shape of the fixing hole 211 is matched with the structure shape formed by the three screw rods of the screw rod pump. The shape of the fixing hole 211 is matched with the structure shape formed by the three screw rods, after the screw rod and the fixing hole 211 are inserted and matched, the screw rod will not move greatly, and the fixing plate 2 can stably support the pump sleeve, so that the assembly work of the staff can be stably carried out.

[0054] In some embodiments, referring to Figure 2 The adjacent fixing plates 2 are provided with a buffer pad 4. The buffer pad 4 can make the adjacent fixing plates 2 have a certain gap, reduce the friction between the fixing plates 2, avoid the difficulty of moving the upper fixing plate 2 when the lower fixing plate 2 is used by the staff, save the physical strength of the staff, and cause unnecessary physical strength loss.

[0055] In specific implementation, the buffer pad 4 and the spacer 22 adopt the same material and have the same size, and the buffer pad is also welded and fixed with the fixing plate 2 at the bottom.

[0056] In some embodiments, the side edge of the fixed plate 2 is provided with a pump model identification for displaying the model of the corresponding fixed plate 2. The pump model identification corresponds to the type of three-screw pump, and the arrangement of multiple pump model identifications facilitates the staff to quickly find the position of the fixed plate 2 required to be used according to the size information on the label, thereby improving the assembly efficiency.

[0057] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tri-screw pump assembly tool characterized by, The utility model relates to a three screw rod pump fixing device, comprising: a support base; a plurality of fixing plates stacked in sequence along the up-down direction, the bottom of the fixing plate at the bottom is fixedly connected with the upper surface of the support base, the middle part of each of the plurality of fixing plates is provided with a fixing hole for accommodating the screw rod of the protruding pump sleeve of the three screw rod pump, the fixing holes are coaxially arranged, and the size of the fixing holes gradually increases from top to bottom; and a connecting assembly arranged at the end of the plurality of fixing plates, the connecting assembly is used to limit the displacement of the plurality of fixing plates in the horizontal direction and the up-down direction.

2. The tri-screw pump assembly tool of claim 1, wherein, The support base comprises two support plates and two connecting plates, the two support plates are arranged at intervals along a first horizontal direction, the two connecting plates are arranged at intervals along a second horizontal direction, and the two ends of the connecting plates are connected with the two support plates respectively, the first horizontal direction and the second horizontal direction are perpendicular to each other; the upper surface of the connecting plate and the upper surface of the support plate are coplanar, and the two support plates and the two connecting plates enclose a rectangular avoidance space to accommodate the screw rod of the protruding pump sleeve of the three screw rod pump.

3. The tri-screw pump assembly tool of claim 2, wherein, The support plate comprises two horizontal plates and a vertical plate arranged between the two horizontal plates, the vertical plate and the two horizontal plates are integrally formed, and the horizontal plate at the bottom is provided with a lifting hole.

4. The tri-screw pump assembly tool of claim 1, wherein, The size of the plurality of fixing plates in the width direction gradually increases from top to bottom.

5. The tri-screw pump assembly tool of claim 1, wherein, The fixing plate comprises a plurality of tooling plates stacked in sequence from top to bottom, and a spacer is arranged between any two adjacent tooling plates; the middle part of the tooling plate is provided with the fixing hole.

6. The tri-screw pump assembly tool of claim 1, wherein, The size of the plurality of fixing plates in the length direction is the same, the top of one end of the fixing plate is provided with a connecting hole penetrating through the up-down direction, and the connecting holes are arranged in correspondence with each other in the up-down direction. The connecting assembly comprises a first screw rod and a first nut, the bottom end of the first screw rod is fixedly connected with the fixing plate at the bottom, the top end of the first screw rod penetrates through the connecting holes, and the first screw rod is screwed with the first nut to clamp the plurality of fixing plates in the up-down direction.

7. The tri-screw pump assembly tool of claim 6, wherein, The end face of the fixing plate away from the fixing hole is provided with a limiting groove, and the limiting grooves are arranged in correspondence with each other in the up-down direction; the connecting assembly further comprises a second screw rod and a second nut, the bottom end of the second screw rod is rotatably connected with the support base, and the rotation axis is perpendicular to the up-down direction, the second screw rod is insertedly connected with the limiting grooves, and the second nut is screwed with the second screw rod to clamp the plurality of fixing plates in the up-down direction.

8. The tri-screw pump assembly tool of claim 1, wherein, The fixing hole is a fishtail-shaped hole, and the shape of the fixing hole is matched with the structure formed by the three screw rods of the screw rod pump.

9. The tri-screw pump assembly tool of claim 1, wherein, A buffer pad is arranged between any two adjacent fixing plates.

10. The tri-screw pump assembly tool of claim 1, wherein, The side edge of the fixing plate is provided with a pump model identifier, and the pump model identifier is used to display the model of the corresponding fixing plate.

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