Sliding block sealing structure of emulsion pump

Abstract

The utility model relates to the technical field of sealing, in particular to an emulsion pump sliding block sealing structure which comprises a sliding block seat, a sliding cavity hole used for being in sliding fit with a sliding block is formed in the sliding block seat, a containing groove located on the outer side of the sliding cavity hole is formed in one side face of the sliding block seat, and an oil seal pressing plate is arranged on the other side face of the sliding block seat. A first open groove is formed in the inner side wall of the sliding cavity hole, a second open groove is formed in the side, close to the oil seal pressing plate, of the first open groove, the first open groove is provided with an inner sealing ring, a side sealing ring with the U-shaped section is arranged in the second open groove and tightly attached to the oil seal pressing plate, and a second oil guide hole communicated with the sliding cavity hole is formed between the first open groove and the second open groove. Due to the arrangement of the inner sealing ring and the side sealing ring, the sealing effect is improved, through the arrangement of the second oil guide hole, it is guaranteed that lubricating oil circulates in the sliding cavity hole and the side, away from the oil seal pressing plate, of the sliding block base, reliable lubrication between the sliding block and the sliding cavity hole is guaranteed, and friction is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, in particular to a slider sealing structure of an emulsion pump. Background Art

[0002] The emulsion pump is the power source of the support system in coal mining production. Its working state is closely related to safe production and plays an important role in the safe production of coal mines.

[0003] For example, on February 27, 2013, a patent with the publication number CN202756223U and the name of a sealing device for an emulsion pump was published. It includes a pump housing and a slider. The pump housing is provided with a slider cavity hole, and an oil seal is arranged outside the slider cavity hole. The slider reciprocates in the slider cavity hole. It also includes a sealing baffle plate that cooperates with the pump housing. The sealing baffle plate is provided with a slider hole. The sealing baffle plate is fixed to the pump housing by bolts. The slider hole on the sealing baffle plate is concentric with the slider cavity hole, and the slider cavity hole can be effectively sealed. However, the applicant found that during the operation of the emulsion pump, due to the high-speed reciprocating motion of the plunger, it is easy to cause the sealing effect of the slider cavity to decrease, and the sealing effect needs to be improved. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a slider sealing structure of an emulsion pump to solve the problem that the sealing effect needs to be improved.

[0005] Based on the above purpose, the present utility model provides a slider sealing structure of an emulsion pump, including a slider seat. A sliding cavity hole for slidingly cooperating with the slider is opened in the slider seat. The slider reciprocates in the sliding cavity hole. An annular receiving groove located outside the sliding cavity hole is opened on one side surface of the slider seat. An oil seal pressing plate is arranged on the other side surface of the slider seat. A first slot is opened on the inner side wall of the sliding cavity hole. A second slot opened on the inner side wall of the sliding cavity hole is arranged on one side of the first slot close to the oil seal pressing plate. An inner sealing ring is arranged in the first slot. A side sealing ring with a U-shaped cross-section is arranged in the second slot. The U-shaped opening of the side sealing ring faces the first slot. The side sealing ring is closely attached to the oil seal pressing plate. A second oil guide hole communicating with the sliding cavity hole is arranged between the first slot and the second slot. The second oil guide hole communicates with the receiving groove.

[0006] Optionally, at least one third slot opened on the inner side wall of the sliding cavity hole is arranged on the other side of the first slot. A guide ring is arranged in the third slot.

[0007] Optionally, a first oil guide hole connected to the sliding cavity hole is provided between the first slot and the third slot, and an oil guide port connected to the first oil guide hole is provided on a side surface of the slider seat, and the oil guide port is located between the sliding cavity hole and the accommodating groove.

[0008] Optionally, a first oil groove communicating with the first oil guide hole is provided on the inner side wall of the sliding cavity hole.

[0009] Optionally, an annular sealing groove is provided on the outer side wall of the slider seat, and an O-ring is provided in the sealing groove.

[0010] Optionally, a second oil-passing groove formed on an inner side wall of the sliding cavity hole is provided on a side of the second slot facing the first slot, and the second oil-conducting hole is connected to the sliding cavity hole through the second oil-passing groove.

[0011] Optionally, the inner sealing ring is a Step seal.

[0012] Optionally, the side sealing ring is a pan seal.

[0013] The beneficial effects of the utility model: the utility model provides an emulsion pump slider sealing structure, the arrangement of the inner sealing ring and the side sealing ring improves the sealing effect, when the slider slides in the sliding cavity hole in the slider seat, lubricating oil is provided between the slider and the inner wall of the slider seat, and the second oil guide hole is arranged to ensure the circulation of the lubricating oil in the sliding cavity hole and on the side of the slider seat away from the oil seal pressure plate, thereby ensuring reliable lubrication between the slider and the sliding cavity hole, reducing friction, further ensuring that the slider can reciprocate better in the sliding cavity hole, ensuring a longer service life, and improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a side structural schematic diagram of the utility model.

[0017] In the figure: 1. guide ring; 2. slider seat; 3. step seal; 4. outer sealing ring; 5. oil seal pressure plate; 6. pan seal; 7. screw; 8. first oil guide hole; 9. second oil guide hole. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the following further elaborates on the present utility model in detail with reference to specific embodiments and the accompanying drawings.

[0019] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present utility model should have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model pertains. The "first", "second", and similar terms used in the present utility model do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0020] As Figures 1 to 2 shown, an emulsion pump slider sealing structure includes a slider seat 2. A sliding cavity hole for slidingly mating with the slider is provided in the slider seat 2. The slider reciprocates in the sliding cavity hole. An annular receiving groove located outside the sliding cavity hole is provided on one side surface of the slider seat 2. An oil seal pressing plate 5 is provided on the other side surface of the slider seat 2. The oil seal pressing plate 5 is fixed to the slider seat 2 by screws 7. A first groove is provided on the inner side wall of the sliding cavity hole. A second groove provided on the inner side wall of the sliding cavity hole is provided on one side of the first groove close to the oil seal pressing plate 5. An inner sealing ring is provided in the first groove. A side sealing ring with a U-shaped cross-section is provided in the second groove. The U-shaped opening of the side sealing ring faces the first groove. The side sealing ring is in close contact with the oil seal pressing plate 5. A second oil guiding hole 9 communicating with the sliding cavity hole is provided between the first groove and the second groove. The second oil guiding hole 9 communicates with the receiving groove.

[0021] One end of the slider is hinged to a connecting rod. The connecting rod is located on the side of the slider seat 2 away from the oil seal pressing plate 5. The other end of the slider is connected to a plunger. The plunger is located on the side of the slider seat 2 close to the oil seal pressing plate 5. During the operation of the emulsion pump, the motor drives the crankshaft to rotate, and the crankshaft drives the connecting rod to move, causing the connecting rod to pull the slider to perform a reciprocating linear motion along the sliding cavity hole, thereby driving the plunger to perform a reciprocating linear motion.

[0022] The setting of the inner sealing ring and the side sealing ring improves the sealing effect. When the slider slides in the sliding cavity hole of the slider seat 2, there is lubricating oil between the slider and the inner wall of the slider seat 2. By setting the second oil guiding hole 9, the circulation of the lubricating oil in the sliding cavity hole and on the side of the slider seat 2 away from the oil seal pressing plate 5 is ensured, the reliable lubrication between the slider and the sliding cavity hole is ensured, the friction is reduced, and further the better reciprocating movement of the slider in the sliding cavity hole is ensured, and a longer service life is ensured.

[0023] At least one third slot is provided on the inner side wall of the sliding cavity hole on the other side of the first slot. A guiding ring 1 is arranged in the third slot. By arranging the guiding ring 1, the radial force generated during the reciprocating movement of the slider can be supported, and a guiding function can be achieved, avoiding the contact between the slider and the inner wall of the slider seat 2 and scratching the slider.

[0024] A first oil guiding hole 8 communicating with the sliding cavity hole is provided between the first slot and the third slot. An oil guiding port communicating with the first oil guiding hole 8 is provided on one side surface of the slider seat 2. The oil guiding port is located between the sliding cavity hole and the receiving groove. Through the first oil guiding hole 8, the lubricating oil can be further introduced between the guiding ring 1 and the inner sealing ring, further realizing the lubrication effect between the slider and the slider seat 2, ensuring the better reciprocating sliding of the slider, and ensuring a longer service life.

[0025] A first oil through groove communicating with the first oil guiding hole 8 is provided on the inner side wall of the sliding cavity hole. The first oil guiding hole 8 communicates with the sliding cavity hole through the first oil through groove. The setting of the first oil through groove facilitates the lubricating oil in the first oil through groove and facilitates the lubrication between the slider and the slider seat 2.

[0026] An annular sealing groove is provided on the outer side wall of the slider seat 2. An O-shaped outer sealing ring 4 is arranged in the sealing groove, improving the sealing effect.

[0027] A second oil through groove is provided on the inner side wall of the sliding cavity hole on the side of the second slot facing the first slot. The second oil guiding hole 9 communicates with the sliding cavity hole through the second oil through groove. The setting of the second oil through groove facilitates the lubricating oil in the second oil through groove and facilitates the lubrication between the slider and the slider seat 2.

[0028] The inner sealing ring is a Step seal 3. The Step seal 3 is composed of a rubber O-ring and a polytetrafluoroethylene ring. The rubber O-ring is a force-applying element, providing sufficient sealing force, improving the sealing effect, and compensating for the polytetrafluoroethylene ring.

[0029] The side sealing ring is a U-shaped integral O-ring. The integral O-ring has extremely low compression set characteristics and good sealing effect. The side sealing ring can be a Flexiseal 6. The Flexiseal 6 is a high-performance sealing element with a U-shaped Teflon inner special spring, improving the sealing effect.

[0030] Those of ordinary skill in the art should understand that any discussion of the above embodiments is merely exemplary and is not intended to imply that the scope of the present utility model is limited to these examples; under the concept of the present utility model, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present utility model as described above, which are not provided in detail for the sake of brevity.

[0031] The embodiments of the present utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An emulsifying liquid pump slider sealing structure, including a slider seat, a sliding cavity hole for sliding cooperation with the slider is provided in the slider seat, and the slider reciprocates in the sliding cavity hole, characterized in that, An annular receiving groove located outside the sliding cavity hole is formed on one side surface of the slider seat. An oil seal pressing plate is arranged on the other side surface of the slider seat. A first slot is formed on the inner side wall of the sliding cavity hole. A second slot is formed on the inner side wall of the sliding cavity hole and is arranged on the side close to the oil seal pressing plate of the first slot. An inner sealing ring is arranged in the first slot. A side sealing ring with a U-shaped cross section is arranged in the second slot. The U-shaped opening of the side sealing ring faces the first slot. The side sealing ring is in close contact with the oil seal pressing plate. A second oil guiding hole communicating with the sliding cavity hole is arranged between the first slot and the second slot. The second oil guiding hole communicates with the receiving groove.

2. The slider sealing structure of an emulsion pump according to claim 1, wherein, At least one third slot is formed on the inner side wall of the sliding cavity hole and is arranged on the other side of the first slot. A guiding ring is arranged in the third slot.

3. The slider sealing structure of an emulsion pump according to claim 2, characterized in that, A first oil guiding hole communicating with the sliding cavity hole is arranged between the first slot and the third slot. An oil guiding port communicating with the first oil guiding hole is formed on one side surface of the slider seat. The oil guiding port is located between the sliding cavity hole and the receiving groove.

4. A slider seal structure of an emulsion pump according to claim 3, characterized in that, A first oil through groove communicating with the first oil guiding hole is formed on the inner side wall of the sliding cavity hole.

5. The slider sealing structure of an emulsion pump according to claim 1, wherein, An annular sealing groove is formed on the outer side wall of the slider seat. An O-ring is arranged in the sealing groove.

6. The slider sealing structure of an emulsion pump according to claim 1, characterized in that A second oil through groove is formed on the inner side wall of the sliding cavity hole and is arranged on the side of the second slot facing the first slot. The second oil guiding hole communicates with the sliding cavity hole through the second oil through groove.

7. A slider seal structure of an emulsion pump according to claim 1, characterized in that The inner sealing ring is a Strugl seal.

8. The sliding block sealing structure of an emulsion pump according to claim 1, characterized in that The side sealing ring is a TTO seal.

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