Slide valve type pump unit
By designing a slide valve pump unit, the problem of insufficient flow and pressure resistance of traditional plunger oil pumps is solved, thereby improving flow and pressure performance, reducing production costs, and enhancing the stability and applicability of the equipment.
Patent Information
- Application Number
- CN202422985072.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Traditional plunger oil pumps have low flow control and pressure resistance performance, and are prone to problems such as valve seat puncture, valve ball poor setting, and slide block misalignment, resulting in reduced pump efficiency and unsuitability for extreme environments.
The pump unit adopts a slide valve type, including a slide valve assembly and a pump body. The slide valve core replaces the cone valve core and spherical valve core. Combined with an eccentric cam and a return spring, it can improve flow and pressure performance, and reduce leakage through plug and oil outlet design.
It improves the flow and pressure performance of the pump unit, reduces production costs, enhances the stability and applicability of the equipment, prevents foreign objects from getting stuck, and extends service life.
Smart Images
Figure CN223806263U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lubrication pump technical field especially a slide valve formula pump unit. BACKGROUND
[0002] In the oilfield development process, the plunger oil pump is one of the main lifting equipment, the traditional plunger oil pump, all be equipped with fixed valve and traveler, the original structure mostly uses the valve core and the spherical valve core, its flow control performance and pressure resistance performance are lower, cannot be applicable to the extreme environment, because the well condition environment and the influence of water hammer effect, prompting the plunger oil pump operation process, prone to valve seat leak, valve ball seat seal not strictly and so on, lead to pump efficiency to reduce or failure, and easy to produce gas lock and sand card phenomenon, and the slider of traveler is slid up and down in the oil outlet cover, the oil outlet cover inner chamber top is closed, the movement of the slide valve in the oil outlet cover is easy to dislocation, lose balance, cause the equipment structure to be unstable, the valve ball valve seat occupies the cost proportion in the process of processing and manufacturing is higher. SUMMARY
[0003] The purpose of the present application is to provide a slide valve formula pump unit, aiming at solving the problems in the prior art.
[0004] The application embodiment provides a slide valve formula pump unit, which comprises a pump body and a slide valve assembly; the pump body is a columnar body and is divided into a slide valve pump body and a plunger pump body; the slide valve pump body is divided into a connecting section and a working section which are connected; the top connecting section is connected with the plunger pump body and the inner diameters of the two are the same; the slide valve pump body is provided with a slide valve assembly; the slide valve assembly comprises a valve core, a restoring spring and a plug; the plug is fixedly connected to the tail of the working section of the slide valve pump body; the plug is provided with an oil outlet gap; the valve core is slidably arranged in the center of the plug; the end of the valve core is an oil outlet cylinder; the oil outlet cylinder is located in the connecting section of the slide valve pump body; the oil outlet cylinder is arranged in close contact with the inner wall of the connecting section of the slide valve pump body; the bottom of the cylinder wall of the oil outlet cylinder is provided with an oil outlet flow guide hole; the plunger pump body is provided with a plunger rod; the outer movable end of the plunger rod is provided with a plug; a pump oil chamber is formed between the plunger rod and the oil outlet cylinder of the valve core; the plunger pump body is provided with an oil inlet hole; the plunger pump body is provided with a compression spring outside; the outer movable end of the plunger rod extends into an adjusting cylinder; the adjusting cylinder is provided with an eccentric cam.
[0005] Further, the tail of the working section of the slide valve pump body is an oil outlet; the oil outlet is connected with an external oil conveying pipe.
[0006] Further, the inner diameter of the connecting section of the slide valve pump body is smaller than the inner diameter of the working section; the valve core in the working section of the slide valve pump body is provided with a restoring spring outside.
[0007] Further, the oil outlet cylinder bottom is provided with a circular convex block; the circular convex block is located in the sliding valve pump body working section, and a flow gap exists between the circular convex block and the inner wall of the pump body working section.
[0008] Further, the eccentric cam is provided with an eccentric rotating shaft; the eccentric rotating shaft is rotationally connected with the adjusting cylinder, and the eccentric rotating shaft is connected with the output end of the external motor.
[0009] The utility model discloses beneficial effect is: the utility model structure is simple, and the original cone valve core and spherical valve core are upgraded as the sliding valve valve core, improves the flow and pressure performance of pump unit, reduces production cost, and the sliding valve type plunger pump unit is sealed, can effectively reduce the leakage, and the sliding valve pump body bottom is equipped with the plug, and the valve core top is closely contacted with the pump body, and it is not easy to dislocation in the sliding process, and the equipment operation is relatively stable, and is suitable for extreme environment, prevents the card foreign matter, prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS
[0010] Fig. 1 It is the structure schematic diagram of the utility model.
[0011] Fig. 2 It is the pump body structure state schematic diagram when oiling.
[0012] Fig. 3 It is the pump body structure state schematic diagram when oiling.
[0013] In the drawing:
[0014] 1, plugging, 2, compression spring, 3, recovery spring, 4, plug, 40, oil outlet gap, 5, plunger rod, 6, pump body, 60, sliding valve pump body working section, 61, sliding valve pump body connecting section, 62, plunger pump body, 7, valve core, 70, circular convex block, 8, gasket, 9, oil inlet hole, 10, oil outlet cylinder, 11, oil outlet flow guide hole, 13, pump oil chamber, 14, oil outlet, 150, eccentric cam, 151, rotating shaft. DETAILED DESCRIPTION
[0015] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.
[0016] As Figs. 1 to 3The shown one kind of slide valve pump unit includes pump body 6 and slide valve assembly;The pump body 6 is columnar body, and is divided into slide valve pump body and plunger pump body 62 two parts;The slide valve pump body is divided into the connecting section 61 and working section 60 connected;The top connecting section 61 is connected with plunger pump body 62, and the inner diameter of both is same;The slide valve pump body is equipped with slide valve assembly;The slide valve assembly includes valve core 7, restoring spring 3 and plug 4;The plug 4 is fixedly connected in the tail of slide valve pump body working section 60;The plug 4 is equipped with oil outlet gap 40;Lubricating oil can flow out from the gap, the valve core 7 is slidably arranged in the center of plug 4;The valve core 7 end is oil outlet cylinder 10;The oil outlet cylinder 10 is located in the connecting section 61 of slide valve pump body;The oil outlet cylinder 10 is closely arranged in the inner wall of connecting section 61 of slide valve pump body;The oil outlet cylinder 10 is equipped with oil outlet guide hole 11 on the bottom of cylinder wall;The plunger pump body 62 is equipped with plunger rod 5;The plunger rod 5 is equipped with sealing 1 on the outer movable end;The plunger rod 5 and valve core oil outlet cylinder 10 form pump oil chamber 13;The plunger pump body 62 is equipped with oil inlet hole 9;The plunger pump body 62 is equipped with compression spring 2;The compression spring 2 is connected with sealing 1, controls the activity of plunger rod 5, and the outer movable end of plunger rod 5 extends into adjusting cylinder;The adjusting cylinder is equipped with eccentric cam 150.
[0017] The tail of slide valve pump body working section 60 is oil outlet 14;The oil outlet 13 is connected with external oil delivery pipe.
[0018] The inner diameter of connecting section 61 of slide valve pump body is less than the inner diameter of working section 60;The valve core 7 in the slide valve pump body working section 60 is equipped with restoring spring 3;The restoring spring 3 is equipped with gasket 8, and the restoring spring 3 is used for resetting valve core 7.
[0019] The bottom of oil outlet cylinder 10 is equipped with circular convex block 70;The circular convex block 70 is located in the slide valve pump body working section 60;There is flow gap between circular convex block 70 and the inner wall of pump body working section 60;The circular convex block 70 and plug 4 are used for limiting the position of restoring spring 3, and lubricating oil can flow from the flow gap to the tail of slide valve pump body working section 60.
[0020] The eccentric cam 150 is equipped with eccentric rotating shaft 151;The eccentric rotating shaft 151 is rotatably connected with adjusting cylinder, and is connected with the output end of external motor, which is the existing eccentric wheel structure, and the shape of eccentric cam is not limited;Two different running lengths are generated when the eccentric wheel rotates, to control the compression and rebound of plunger rod 5;When the long end of eccentric cam 150 contacts with the movable end of plunger rod 5 due to rotation, the plunger rod 5 and compression spring 2 are compressed inward;When the long end of eccentric cam 150 moves away from the movable end of plunger rod 5, the short end of eccentric cam 150 does not contact with plunger rod 5, and plunger rod 5 moves outward under the action of compression spring 2.
[0021] When the pump body is filled with oil, the eccentric cam 150 rotates and does not contact the plunger rod 5, the plunger rod 5 moves outward under the action of the compression spring 2, the oil inlet hole 9 on the plunger pump body 62 is opened, the spool valve core 7 is restored to the original position under the action of the restoring spring 3, the pump oil chamber 13 generates a vacuum degree, and the lubricating oil enters the pump oil chamber 13 from the oil inlet hole 9; when the eccentric cam 150 rotates to the long shaft end and contacts the plunger rod 5 to extrude the plunger rod 5, the plunger rod 5 moves inward, driving the pump oil chamber 13 and the spool valve core 7 to move synchronously in the same direction, after the bottom of the valve core end oil outlet cylinder 10 moves away from the slide valve pump body connecting section 61, the oil outlet guide hole 11 is opened, the lubricating oil flows from the pump oil chamber 13 to the inner cavity of the slide valve pump body working section 60 through the oil outlet guide hole 11, and then flows to the oil outlet 14 from the oil outlet gap 40 on the plug 4, and enters the external oil delivery pipe.
[0022] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. A slide valve pump unit, characterized by The utility model relates to a pump, which comprises a pump body and a slide valve assembly; the pump body is a columnar body and is divided into a slide valve pump body and a plunger pump body; the slide valve pump body is divided into a connecting section and a working section; the connecting section is in communication with the plunger pump body, and the inner diameters of the two sections are the same; the slide valve pump body is provided with the slide valve assembly; the slide valve assembly comprises a valve core, a restoring spring and a plug; the plug is fixedly connected to the tail of the working section of the slide valve pump body; the plug is provided with an oil outlet gap; the valve core is slidably arranged in the center of the plug; the end of the valve core is an oil outlet cylinder; the oil outlet cylinder is arranged in the connecting section of the slide valve pump body; the oil outlet cylinder is arranged in close contact with the inner wall of the connecting section of the slide valve pump body; the bottom of the cylinder wall of the oil outlet cylinder is provided with an oil outlet flow guide hole; the plunger pump body is provided with a plunger rod; the outer movable end of the plunger rod is provided with a plug; the plunger rod and the oil outlet cylinder of the valve core form a pump oil chamber; the plunger pump body is provided with an oil inlet hole; the plunger pump body is provided with a compression spring; the outer movable end of the plunger rod extends into an adjusting cylinder; the adjusting cylinder is provided with an eccentric cam.
2. The slipper pump unit of claim 1, wherein, The tail of the working section of the slide valve pump body is an oil outlet; the oil outlet is in communication with an external oil conveying pipe.
3. The slipper pump unit of claim 1, wherein, The inner diameter of the connecting section of the slide valve pump body is smaller than the inner diameter of the working section; the valve core in the working section of the slide valve pump body is provided with a restoring spring.
4. The slipper pump unit of claim 1, wherein, The bottom of the oil outlet cylinder is provided with a circular convex block; the circular convex block is arranged in the working section of the slide valve pump body, and a flow gap exists between the circular convex block and the inner wall of the working section of the pump body.
5. The slipper pump unit of claim 1, wherein, The eccentric cam is provided with an eccentric rotating shaft; the eccentric rotating shaft is rotatably connected to the adjusting cylinder, and the eccentric rotating shaft is connected to the output end of an external motor.