Variable eccentric adjusting mechanism for metering pump

Abstract

The utility model relates to the technical field of metering pumps, in particular to a variable eccentric adjusting mechanism for a metering pump, which comprises a metering pump main body, an adjusting hand wheel is arranged on one side of the metering pump main body, an adjusting screw rod is fixed on the adjusting hand wheel, and one end of the adjusting screw rod far away from the adjusting hand wheel extends into the metering pump main body. A connecting piece and a clamping base are arranged between the adjusting hand wheel and the metering pump body, a connecting sleeve is fixed to the side, close to the clamping base, of the adjusting hand wheel, a plurality of inserting columns are integrally formed on the side, close to the adjusting hand wheel, of the clamping base, a plurality of clamping grooves matched with the inserting columns are formed in the side, close to the clamping base, of the connecting sleeve, and two clamping sleeves are fixed to the side, away from the adjusting hand wheel, of the clamping base. Guide rods are arranged in the two clamping sleeves, the two guide rods are sleeved with springs, and the ends, away from the clamping base, of the two guide rods are connected with the connecting piece; the spring can extrude the clamping sleeve, so that the clamping base is tightly attached to the connecting sleeve, the inserting column is matched with the clamping groove in the connecting sleeve, and the adjusting hand wheel can be prevented from rotating due to mistaken touch.

Description

Technical Field

[0001] The utility model relates to the technical field of metering pumps, in particular to a variable eccentricity adjustment mechanism for a metering pump. Background Art

[0002] Metering pumps are also called quantitative pumps or proportional pumps. Metering pumps are special positive displacement pumps that can meet the needs of various strict process flows. The flow rate can be adjusted steplessly within the range of 0-100% and is used to transport liquids (especially corrosive liquids). The flow rate of the pump is regulated by rotating the adjusting handwheel, which drives the adjusting screw to rotate, thereby changing the eccentricity of the moving shaft to achieve the purpose of changing the plunger (piston) stroke. During the use of the metering pump, the adjusting handwheel is easily rotated due to accidental touch, resulting in unstable flow. Therefore, a variable eccentricity adjustment mechanism for metering pumps is proposed to prevent the adjusting handwheel from rotating due to accidental touch. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides a variable eccentricity adjustment mechanism for a metering pump.

[0004] The technical solution adopted by the utility model to solve its technical problems is a variable eccentricity adjustment mechanism for a metering pump, comprising a metering pump main body, an adjusting handwheel is provided on one side of the metering pump main body, an adjusting screw is fixed on the adjusting handwheel, the end of the adjusting screw away from the adjusting handwheel extends into the metering pump main body, a connecting piece and a socket are provided between the adjusting handwheel and the metering pump main body, a connecting sleeve is fixed on the side of the adjusting handwheel close to the socket, a plurality of plug posts are integrally formed on the side of the socket close to the adjusting handwheel, a plurality of slots adapted to the plug posts are formed on the side of the connecting sleeve close to the socket, two sockets are fixed on the side of the socket away from the adjusting handwheel, guide rods are provided in the two sockets, springs are sleeved on the two guide rods, and ends of the two guide rods away from the socket are connected to the connecting piece.

[0005] By adopting the above technical solution, the spring can squeeze the sleeve so that the socket is close to the connecting sleeve, and the plug post cooperates with the slot on the connecting sleeve to prevent the adjusting handwheel from rotating due to accidental touch. When the adjusting handwheel needs to be rotated, the socket is pushed away from the adjusting handwheel, and the plug post is disengaged from the slot without affecting the rotation of the adjusting handwheel. After adjustment, the socket is released, the spring pushes the sleeve to reset, and the plug post is inserted into the slot on the connecting sleeve to prevent the adjusting handwheel from rotating due to accidental touch.

[0006] Specifically, the top and bottom ends of the card holder are integrally formed with shifting blocks.

[0007] By adopting the above technical solution and setting the shifting block, it is convenient to push the card seat.

[0008] Specifically, the side walls of the two shifting blocks away from the metering pump body are both fixed with anti-slip pads.

[0009] By adopting the above technical solution, the provision of the anti-slip pad is conducive to pushing the shifting block.

[0010] Specifically, the connecting member includes a clamping seat and a locking bolt. The clamping seat is sleeved on the metering pump body, and two screw holes adapted to the locking bolt are provided on the clamping seat.

[0011] By adopting the above technical solution, the arrangement of the locking bolt and the clamping seat can support the guide rod.

[0012] Specifically, a protective pad is fixed in the clamp seat.

[0013] By adopting the above technical solution and providing the protective pad, it is possible to prevent the clamping seat from clamping the metering pump body.

[0014] Beneficial effects of the utility model:

[0015] (1) The utility model discloses a variable eccentric adjustment mechanism for a metering pump. The spring can squeeze the clamping sleeve so that the clamping seat is tightly attached to the connecting sleeve. The plug post cooperates with the card slot on the connecting sleeve to prevent the adjusting hand wheel from rotating due to accidental touch. When the adjusting hand wheel needs to be rotated, the clamping seat is pushed away from the adjusting hand wheel, and the plug post is disengaged from the card slot without affecting the rotation of the adjusting hand wheel. After adjustment, the clamping seat is released, the spring pushes the clamping sleeve to reset, and the plug post is inserted into the card slot on the connecting sleeve to prevent the adjusting hand wheel from rotating due to accidental touch.

[0016] (2) The variable eccentricity adjustment mechanism for a metering pump described in the utility model, the arrangement of the locking bolt and the clamping seat can support the guide rod, and the arrangement of the protective pad can prevent the clamping seat from clamping the metering pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified view of the structure at center A;

[0020] Figure 3 It is a structural schematic diagram of the card holder of the utility model.

[0021] In the figure: 1. metering pump body; 2. adjusting hand wheel; 3. connecting piece; 30. clamping seat; 31. protective pad; 32. locking bolt; 4. adjusting screw; 5. connecting sleeve; 6. clamping seat; 60. plug post; 61. shift block; 7. clamping sleeve; 8. spring; 9. guide rod; 10. anti-slip pad. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In order to prevent the adjusting hand wheel 2 from rotating accidentally, as an embodiment of the present utility model, Figure 1 , Figure 2 , Figure 3 As shown, the utility model describes a variable eccentricity adjustment mechanism for a metering pump, comprising a metering pump body 1, an adjusting handwheel 2 is provided on one side of the metering pump body 1, an adjusting screw 4 is welded and fixed on the adjusting handwheel 2, the adjusting screw 4 extends into the metering pump body 1 at one end away from the adjusting handwheel 2, a connecting piece 3 and a holder 6 are provided between the adjusting handwheel 2 and the metering pump body 1, a connecting sleeve 5 is welded and fixed on the side of the adjusting handwheel 2 close to the holder 6, a plurality of plug posts 60 are integrally formed on the side of the holder 6 close to the adjusting handwheel 2, a plurality of slots matching the plug posts 60 are formed on the side of the connecting sleeve 5 close to the holder 6, two sleeves 7 are welded and fixed on the side of the holder 6 close to the adjusting handwheel 2, guide rods 9 are provided in the two sleeves 7, springs 8 are sleeved on the two guide rods 9, and the ends of the two guide rods 9 away from the holder 6 are welded and connected to the connecting piece 3.

[0024] When in use, the spring 8 can squeeze the sleeve 7 so that the holder 6 is close to the connecting sleeve 5, and the plug post 60 cooperates with the slot on the connecting sleeve 5 to prevent the adjusting hand wheel 2 from rotating due to accidental touch. When the adjusting hand wheel 2 needs to be rotated, the holder 6 is pushed away from the adjusting hand wheel 2, and the plug post 60 comes out of the slot without affecting the rotation of the adjusting hand wheel 2. The adjusting hand wheel 2 is rotated, and the adjusting hand wheel 2 drives the adjusting screw 4 to rotate, thereby changing the eccentricity of the moving shaft to achieve the purpose of changing the stroke of the plunger (piston) (prior art). After adjustment, the holder 6 is released, and the spring 8 pushes the sleeve 7 to reset, the holder 6 is close to the connecting sleeve 5, and the plug post 60 is inserted into the slot on the connecting sleeve 5 to prevent the adjusting hand wheel 2 from rotating due to accidental touch.

[0025] In order to facilitate pushing the card holder 6, exemplary, as Figure 3 As shown, the top and bottom ends of the holder 6 are integrally formed with a shifting block 61 .

[0026] In order to facilitate pushing the dial block 61, for example, Figure 3 As shown, the side walls of the two shifting blocks 61 away from the metering pump body 1 are fixed with anti-slip pads 10 by adhesive.

[0027] In order to support the guide rod 9, for example, Figure 2As shown, the connecting member 3 includes a clamping seat 30 and a locking bolt 32 . The clamping seat 30 is sleeved on the metering pump body 1 . The clamping seat 30 is provided with two screw holes adapted to the locking bolt 32 .

[0028] In order to protect the metering pump body 1, for example, Figure 2 As shown, a protective pad 31 is fixed in the clamp seat 30 by adhesive.

[0029] When the utility model is in use, the spring 8 can squeeze the clamping sleeve 7, so that the clamping seat 6 is tightly attached to the connecting sleeve 5, and the plug 60 cooperates with the clamping groove on the connecting sleeve 5, which can prevent the adjusting hand wheel 2 from rotating due to accidental touch;

[0030] When the adjusting hand wheel 2 needs to be rotated, the push block 61 is pushed away from the adjusting hand wheel 2, and the clamping seat 6 moves away from the adjusting hand wheel 2 accordingly, and the plug column 60 is disengaged from the clamping slot, which does not affect the rotation of the adjusting hand wheel 2. The adjusting hand wheel 2 is rotated, and the adjusting hand wheel 2 drives the adjusting screw 4 to rotate, thereby changing the eccentricity of the moving shaft to achieve the purpose of changing the plunger (piston) stroke (existing technology);

[0031] After adjustment, release the clamping seat 6, the spring 8 pushes the clamping sleeve 7 to return to its original position, the clamping seat 6 is tightly attached to the connecting sleeve 5, and the plug post 60 is inserted into the slot on the connecting sleeve 5 to prevent the adjusting hand wheel 2 from rotating due to accidental touch.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents. The contents not described in detail in the utility model belong to the prior art known to those skilled in the art.

Claims

1. A variable eccentricity adjustment mechanism for a metering pump, characterized in that: The invention comprises a metering pump body (1), wherein an adjusting hand wheel (2) is provided on one side of the metering pump body (1), an adjusting screw (4) is fixed on the adjusting hand wheel (2), an end of the adjusting screw (4) away from the adjusting hand wheel (2) extends into the metering pump body (1), a connecting piece (3) and a holder (6) are provided between the adjusting hand wheel (2) and the metering pump body (1), a connecting sleeve (5) is fixed on the side of the adjusting hand wheel (2) close to the holder (6), and the holder (6) A plurality of plug posts (60) are integrally formed on the side close to the adjusting hand wheel (2); a plurality of slots adapted to the plug posts (60) are provided on the side of the connecting sleeve (5) close to the clamping seat (6); two clamping sleeves (7) are fixed on the side of the clamping seat (6) away from the adjusting hand wheel (2); guide rods (9) are provided in the two clamping sleeves (7); springs (8) are sleeved on the two guide rods (9); and the ends of the two guide rods (9) away from the clamping seat (6) are connected to the connecting piece (3).

2. A variable eccentricity adjustment mechanism for a metering pump according to claim 1, characterized in that: The top and bottom ends of the card seat (6) are integrally formed with a shifting block (61).

3. A variable eccentricity adjustment mechanism for a metering pump according to claim 2, characterized in that: Anti-slip pads (10) are fixed to the side walls of the two shifting blocks (61) away from the metering pump body (1).

4. A variable eccentricity adjustment mechanism for a metering pump according to claim 1, characterized in that: The connecting member (3) comprises a clamping seat (30) and a locking bolt (32); the clamping seat (30) is sleeved on the metering pump body (1); and the clamping seat (30) is provided with two screw holes adapted to the locking bolt (32).

5. A variable eccentricity adjustment mechanism for a metering pump according to claim 4, characterized in that: A protective pad (31) is fixed inside the clamp seat (30).

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