T-shaped puller tool for maintenance of Roots flow meter

Abstract

The utility model discloses a T-shaped puller tool for Roots flowmeter maintenance, which comprises a puller block and a top pressing rod, a placing groove is arranged at the bottom of the puller block, a groove opening of the placing groove faces downwards, and top pressing blocks are symmetrically arranged on two sides of the groove opening of the placing groove, so that a T-shaped cavity structure is formed. A connecting hole is formed in the center of the groove bottom of the containing groove in a penetrating mode, the top pressing rod is in threaded connection with the interior of the connecting hole, the top pressing rod and the top pressing block are perpendicularly arranged, and one end of the top pressing rod is arranged in the containing groove; the gear dismounting device can easily solve the problem of dismounting the gear, and compared with manual direct dismounting, the gear dismounting device can ensure that the end face of the gear is complete and not damaged, so that the dismounting and mounting processes are smoother and more efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to flowmeter maintenance tool technical field, concretely relates to a T type pull code tool for roots flowmeter maintenance. BACKGROUND

[0002] Roots flowmeter is a commonly used flow measuring instrument, and is widely applied to various industrial fluid measurement. Roots flowmeter needs to be regularly maintained and overhauled in the process of use due to reasons such as impact of fluid, deposition of impurities and abrasion of mechanical components. The maintenance work directly influences the performance and service life of roots flowmeter. If not properly maintained, roots flowmeter may be caused to have decreased measurement accuracy, frequent faults and even influence the measurement accuracy of flowmeter.

[0003] When the gas roots flowmeter is disassembled and maintained for inspection and cleaning, the coupling gear is generally difficult to disassemble; the existing roots flowmeter is directly pulled apart manually, which is easy to cause damage to the gear, influence the measurement safety, and cause flowmeter measurement failure and other phenomena.

[0004] In view of the above defects, the utility model creator finally obtains the utility model after long-term research and practice. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical defects, the utility model adopts the technical scheme, and provides a T type pull code tool for roots flowmeter maintenance, which comprises a pull code block and a top pressure rod, the bottom of the pull code block is provided with a placing groove, the groove opening of the placing groove is downward, and the both sides of the groove opening of the placing groove are symmetrically provided with top pressure blocks, so as to form a T type cavity structure, the center of the groove bottom of the placing groove is provided with a connecting hole in penetration, the top pressure rod is screw connected in the connecting hole, the top pressure rod and the top pressure block are vertically arranged, and one end of the top pressure rod is arranged in the placing groove.

[0006] Preferably, the groove width size of the placing groove is greater than the tooth top circle diameter size of the coupling gear on the roots flowmeter.

[0007] Preferably, the groove width size of the placing groove is greater than the tooth top circle diameter size of the coupling gear on the roots flowmeter by 3mm to 5mm.

[0008] Preferably, the distance size between the two top pressure blocks is greater than the rod diameter size of the roots table shaft rod on the roots flowmeter.

[0009] Preferably, the distance size between the two top pressure blocks is greater than the rod diameter size of the roots table shaft rod on the roots flowmeter by 3cm to 5cm.

[0010] Preferably, the end part of the top pressure rod arranged outside the pull code block is provided with an adjusting hole, and the adjusting hole is a hexagonal hole matched with a wrench.

[0011] Preferably, the T-shaped pull code tool for Roots flowmeter maintenance further comprises a clamping frame, the clamping frame comprises a guide rod, a connecting rod and a clamping spring, two clamping holes are symmetrically arranged on the pull code block, the guide rod is arranged in the two clamping holes, the guide rod is arranged in parallel with the top pressing rod, and the two guide rods are connected through the connecting rod; the guide rod and the top pressing block are arranged in one-to-one correspondence, one end of the guide rod is fixedly connected with the connecting rod, the other end is arranged in the placing groove, a limiting ring is arranged on the guide rod, the limiting ring is arranged in the placing groove, the clamping spring is sleeved on the guide rod and arranged between the limiting ring and the bottom of the placing groove, and the end of the guide rod is abutted on the corresponding top pressing block through the elastic repulsive force provided by the clamping spring.

[0012] Preferably, a dismounting rod is arranged on the end portion of the top pressing rod outside the pull code block, and the dismounting rod is arranged in perpendicular to the top pressing rod.

[0013] Preferably, a connecting sleeve is arranged on the connecting rod, the connecting sleeve is sleeved on the top pressing rod, and the two clamping holes are symmetrically arranged on the two sides of the connecting hole.

[0014] Preferably, the clamping frame further comprises a positioning sleeve, the positioning sleeve is fixedly connected with the two limiting rings on the two sides respectively, a positioning hole is arranged in the positioning sleeve, and the positioning hole is coaxially arranged with the top pressing rod.

[0015] Compared with the prior art, the utility model has the advantages that: the utility model can easily solve the problem of dismounting the gear, compared with directly dismounting the gear manually, the end face of the gear is guaranteed to be complete and not damaged, and the dismounting and mounting process is more smooth and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure front view of the T-shaped pull code tool for Roots flowmeter maintenance embodiment one;

[0017] Figure 2 It is a three-dimensional structure view of the T-shaped pull code tool for Roots flowmeter maintenance embodiment one;

[0018] Figure 3 It is a structure front view of the T-shaped pull code tool for Roots flowmeter maintenance embodiment two;

[0019] Figure 4 It is a structure front view of the T-shaped pull code tool for Roots flowmeter maintenance embodiment three.

[0020] Numerals in the drawing represent:

[0021] 1 - top pressure rod; 2 - pull code block; 3 - placement slot; 4 - top pressure block; 5 - guide rod; 6 - connecting rod; 7 - clamping spring; 8 - limit ring; 9 - disassembly rod; 10 - connecting sleeve; 11 - positioning sleeve. DETAILED DESCRIPTION

[0022] The above and other technical features and advantages of the present application will be more apparent from the following detailed description of the application, taken in conjunction with the accompanying drawings.

[0023] Example One

[0024] As shown in Figure 1 and Figure 2 , Figure 1 is a front view of the structure of the T-shaped pull code tool for Roots flowmeter maintenance of the present embodiment; Figure 2 is a perspective view of the structure of the T-shaped pull code tool for Roots flowmeter maintenance of the present embodiment.

[0025] The T-shaped pull code tool for Roots flowmeter maintenance comprises a pull code block 2 and a top pressure rod 1, the bottom of the pull code block 2 is provided with a placement slot 3, the slot opening of the placement slot 3 is downward, and the slot opening of the placement slot 3 is symmetrically provided with a top pressure block 4 on both sides, thereby forming a T-shaped cavity structure, the center of the slot bottom of the placement slot 3 is provided with a connecting hole, the top pressure rod 1 is threadedly connected in the connecting hole, the top pressure rod 1 and the top pressure block 4 are vertically arranged, and one end of the top pressure rod 1 is arranged in the placement slot 3.

[0026] By arranging the coupling gear of the Roots flowmeter in the placement slot 3, and arranging the top pressure block 4 and the top pressure rod 1 on the upper and lower sides of the coupling gear respectively, the two top pressure blocks 4 are symmetrically arranged at the bottom of the coupling gear, the top pressure rod 1 is coaxially arranged with the Roots meter shaft, by screwing the top pressure rod 1, the position of the end of the top pressure rod 1 in the placement slot 3 is adjusted, so that the top pressure rod 1 presses the Roots meter shaft, and the top pressure block 4 presses the two sides of the coupling gear, so as to pull and disassemble the coupling gear from the Roots meter shaft.

[0027] Preferably, the slot width size of the placement slot 3 is greater than the addendum circle diameter size of the coupling gear on the Roots flowmeter, specifically, the slot width size of the placement slot 3 is greater than the addendum circle diameter size of the coupling gear on the Roots flowmeter by 3mm-5mm, so that after the coupling gear is placed in the placement slot 3, the coaxial arrangement of the top pressure rod 1 and the Roots meter shaft is facilitated, so as to reduce the debugging time.

[0028] The distance between the two top pressing blocks 4 is greater than the rod diameter of the Roots meter shaft rod on the Roots flow meter, specifically, the distance between the two top pressing blocks 4 is greater than the rod diameter of the Roots meter shaft rod on the Roots flow meter by 3-5 cm, which ensures the smooth setting of the Roots meter shaft rod between the two top pressing blocks 4, and also ensures that the top pressing block 4 has a larger contact surface with the bottom of the coupling gear, avoiding local excessive pressure and damage.

[0029] Generally, the top pressing rod 1 is provided with an adjusting hole at the end portion outside the pull code block 2, and the adjusting hole is a hexagonal hole, which is convenient for rotating the top pressing rod 1 by using a wrench or the like in cooperation with the adjusting hole.

[0030] The thickness of the pull code block 2 at the connecting hole is increased to compensate for the loss of structural strength due to punching.

[0031] The utility model discloses solve the difficult problem of disassembling gear easily, guarantee gear end face integrity not to be damaged, confirm the practicability of the utility model. Meanwhile, the design of the utility model fully considers the structural characteristics of the pull code of the Roots flow meter, so that the disassembling and installing process are more smooth and efficient. The traditional tool or manual drawing often because with gear end face shape does not match, leading to disassembly difficult, consumes a lot of time and energy. And the utility model can closely fit the gear end face, through reasonable lever effect, so that the operator can easily, quickly complete the disassembly and installation work, thereby the maintenance efficiency of the Roots flow meter is improved significantly.

[0032] In the maintenance process of the Roots flow meter, the damage of the gear end face is a common problem. The traditional tool or manual drawing often because of uneven force or improper operation, leading to deformation, crack or even fracture. And the utility model is through its unique design, so that the force is more uniform, avoids the damage of the pull code due to improper operation. Meanwhile, the tool is also made of corrosion-resistant material, further improves its durability and reliability, reduces the damage risk.

[0033] Example two

[0034] As Figure 3 shown, Figure 3 the structure front view of the T-shaped pull code tool for the maintenance of the Roots flow meter.

[0035] The T-type pull-code tool for maintaining a Roots flowmeter according to this utility model also includes a clamping frame, which includes a guide rod 5, a connecting rod 6, and a clamping spring 7. Two clamping holes are symmetrically arranged on the pull-code block 2, and the guide rod 5 is disposed in each of the two clamping holes. The guide rod 5 is arranged parallel to the top pressure rod 1, and the two guide rods 5 are connected by the connecting rod 6. The guide rod 5 and the top pressure block 4 are arranged in a one-to-one correspondence. One end of the guide rod 5 is fixedly connected to the connecting rod 6, and the other end is disposed in the placement groove 3. A limit ring 8 is provided on the guide rod 5, and the limit ring 8 is disposed in the placement groove 3. The clamping spring 7 is sleeved on the guide rod 5 and disposed between the limit ring 8 and the bottom of the placement groove 3. The clamping spring 7 provides an elastic repulsive force to make the end of the guide rod 5 abut against the corresponding top pressure block 4.

[0036] By pulling the connecting rod 6, the guide rod 5 can be moved away from the top pressure block 4, and the coupling gear is positioned between the guide rod 5 and the top pressure block 4. The elastic force provided by the clamping spring 7 achieves the clamping and fixing effect of the coupling gear on the T-type pull-code tool used for Roots flow meter maintenance, maintaining the stability of the coupling gear during disassembly. It also facilitates the initial positioning of the present invention and the coupling gear, preventing the coupling gear from slipping off after disassembly.

[0037] Generally, in this embodiment, the top pressure rod 1 is provided with a disassembly rod 9 on the end outside the pull block 2. The disassembly rod 9 is arranged perpendicular to the top pressure rod 1, so as to facilitate the disassembly operation by twisting the top pressure rod 1.

[0038] Preferably, the connecting rod 6 is provided with a connecting sleeve 10, which is sleeved on the top pressing rod 1. The two clamping holes are symmetrically arranged on both sides of the connecting hole. With this structure, at the beginning, the operator can press the disassembly rod 9 against the inside of his hand and apply force with his fingers to pull the connecting rod 6 closer to the disassembly rod 9, thereby moving the guide rod 5 and the top pressing block 4 away from each other.

[0039] It is worth noting that the ends of the top pressure rod 1, the end of the guide rod 5, and the top pressure block 4 are all provided with rubber layers. The end of the top pressure rod 1 contacts the end of the Roots gauge shaft through the rubber layer, and the ends of the guide rod 5 and the top pressure block 4 contact the coupling gear through the rubber layer, thereby avoiding scratches on the components.

[0040] Example 3

[0041] like Figure 4 As shown, Figure 4 This is a front view of the T-type puller tool used for maintaining Roots flow meters in this embodiment.

[0042] The embodiment is further improved on the basis of embodiment two, and the improvement lies in that the clamping frame further comprises a positioning sleeve 11, the positioning sleeve 11 is fixedly connected with the two limiting rings 8 respectively on both sides, the positioning sleeve 11 is provided with a positioning hole, the positioning hole is coaxially arranged with the top pressing rod 1, the clamping frame forms a mouth-shaped frame structure through the connection of the positioning sleeve 11, so that the stability of the whole is improved, and synchronous and stable movement of the two guide rods 5 is facilitated.

[0043] Meanwhile, the positioning sleeve 11 is arranged, the positioning sleeve 11 is sleeved on the upper end of the Roots table shaft rod at the beginning, the positioning of the Roots table shaft rod and the top pressing rod 1 is directly realized through the clamping of the clamping frame on the coupling gear, and the disassembly efficiency of the coupling gear is greatly improved.

[0044] The above is only the preferred embodiment of the present application, which is only illustrative but not limiting for the present application. It is understood by those skilled in the art that many changes, modifications and even equivalents can be made to the present application within the spirit and scope of the present application, but all will fall within the protection scope of the present application.

Claims

1. A T-dial tool for Roots flow meter maintenance, characterized by, The pull code block and the top pressure rod, the pull code block bottom is provided with the placement slot, the slot mouth of the placement slot is downward, and the slot mouth of the placement slot is symmetrically provided with the top pressure block on both sides, the center of the slot bottom of the placement slot is provided with the connecting hole, the top pressure rod is screwed in the connecting hole, the top pressure rod and the top pressure block are vertically arranged, one end of the top pressure rod is arranged in the placement slot. It also includes a clamping frame, the clamping frame includes a guide rod, a connecting rod and a clamping spring, two clamping holes are symmetrically arranged on the pull code block, the guide rod is arranged in the two clamping holes, the guide rod is arranged in parallel with the top pressure rod, and the two guide rods are connected through the connecting rod; the guide rod and the top pressure block are arranged one by one, one end of the guide rod is fixedly connected with the connecting rod, the other end is arranged in the placement slot, a limiting ring is arranged on the guide rod, the limiting ring is arranged in the placement slot, the clamping spring is arranged on the guide rod and between the limiting ring and the bottom of the placement slot, and the end of the guide rod is abutted on the corresponding top pressure block through the elastic repulsive force provided by the clamping spring.

2. The T-puller tool for Roots flowmeter maintenance of claim 1, wherein, The slot width of the placement slot is greater than the diameter of the top circle of the coupling gear on the Roots flowmeter.

3. The T-puller tool for Roots flowmeter maintenance of claim 2, wherein, The slot width of the placement slot is greater than the diameter of the top circle of the coupling gear on the Roots flowmeter by 3mm-5mm.

4. The T-puller tool for Roots flowmeter maintenance of claim 1, wherein, The distance between the two top pressure blocks is greater than the rod diameter of the Roots table shaft on the Roots flowmeter.

5. The T-puller tool for Roots flowmeter maintenance of claim 4, wherein, The distance between the two top pressure blocks is greater than the rod diameter of the Roots table shaft on the Roots flowmeter by 3cm-5cm.

6. The T-puller tool for Roots flowmeter maintenance of claim 1, wherein, The end of the top pressure rod arranged outside the pull code block is provided with an adjusting hole, and the adjusting hole is a hexagonal hole matched with a wrench.

7. The T-puller tool for Roots flowmeter maintenance of claim 1 wherein, The end of the top pressure rod arranged outside the pull code block is provided with a dismounting rod, and the dismounting rod is arranged vertically with the top pressure rod.

8. The T-puller tool for Roots flowmeter maintenance of claim 7, wherein, The connecting sleeve is arranged on the connecting rod, the connecting sleeve is sleeved on the top pressure rod, and the two clamping holes are symmetrically arranged on both sides of the connecting hole.

9. The T-puller tool for Roots flowmeter maintenance of claim 8, wherein, The clamping frame further includes a positioning sleeve, the positioning sleeve is fixedly connected with the two limiting rings on both sides, a positioning hole is arranged in the positioning sleeve, and the positioning hole is coaxially arranged with the top pressure rod.

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