Anti-play pump head assembly for emulsion pump

Abstract

The utility model relates to an anti-play pump head assembly for an emulsion pump, which comprises a pump head body, the pump head body is provided with two spaced and parallel holes in the vertical direction, the two holes are respectively a liquid discharge hole and a liquid suction hole, a liquid discharge assembly is installed in the liquid discharge hole, a liquid suction assembly is installed in the liquid suction hole, and the structures of the liquid discharge assembly and the liquid suction assembly are the same. A transverse hole is formed in one end of the lower part of the pump head body and is communicated with the liquid discharge hole and the liquid suction hole; the liquid suction assembly structurally comprises a valve seat connected with the pump head body, a liquid suction press plug is installed in a liquid suction hole through an O-shaped sealing ring, a valve element is installed at the bottom of the liquid suction press plug through a fastener, the valve element is sleeved with a guide sleeve, the outer wall face of the guide sleeve is matched with the liquid suction press plug, and the valve element is further sleeved with a spring. The bottom of the valve element is located on the top face of the valve seat, the bottom of the suction hydraulic plug presses the valve seat, and work is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsion pumps, in particular to a pump head assembly for an emulsion pump capable of preventing movement. Background Art

[0002] Emulsion pumps are used in coal mining operations to provide emulsion for hydraulic supports. Their operating principle is to pump and discharge liquid by rotating the crankshaft, driving the plunger in reciprocating motion. Hydraulic supports support the roof, providing space for shearers to cut coal and preventing roof collapse. The emulsion is composed of 95% water and 5% emulsified oil. The hydraulic supports extend and retract using hydraulic cylinders driven by the high-pressure emulsion provided by the emulsion pump.

[0003] The pump head assembly of the emulsion pump in the prior art has a compact overall structure, but the pressure plug used has no contact with the valve seat, and the valve seat and the pump head use an interference fit. During installation, it needs to be hammered in, making the overall installation difficult and placing high demands on the operator. Utility Model Content

[0004] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a pump head assembly for an emulsion pump that prevents movement, thereby changing the structure of the pressure plug so that the pressure plug can directly abut against the valve seat, ensuring the stability of the valve seat, while also effectively preventing the possibility of movement, greatly improving the reliability of the entire pump head assembly and extending its service life.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A pump head assembly for an emulsion pump that prevents movement includes a pump head body. The pump head body has two parallel holes spaced apart in a vertical direction, namely a drainage hole and a suction hole. A drainage assembly is installed in the drainage hole, and a suction assembly is installed in the suction hole. The drainage assembly and the suction assembly have the same structure. A transverse hole is opened at one end below the pump head body, and the transverse hole is connected to the drainage hole and the suction hole.

[0007] The structure of the liquid suction assembly is as follows: it includes a valve seat connected to the pump head body, a liquid suction plug is installed in the liquid suction hole through an O-ring, a valve core is installed at the bottom of the liquid suction plug through a fastener, a guide sleeve is sleeved on the outside of the valve core, the outer wall surface of the guide sleeve cooperates with the liquid suction plug, a spring is also sleeved on the outside of the valve core, the bottom of the valve core is located on the top surface of the valve seat, and at the same time, the bottom of the liquid suction plug presses the valve seat.

[0008] As a further improvement of the above technical solution:

[0009] The structure of the liquid suction plug is as follows: it includes a straight rod section, the top surface of the straight rod section is provided with an upper convex structure, the bottom of the straight rod section is provided with a lower convex structure, the outer surfaces of the upper convex structure and the lower convex structure match the inner wall surface of the liquid suction hole, a bolt hole is provided in the middle position of the upper convex structure, the outer wall surface of the lower convex structure is provided with a sealing ring installation groove for installing an O-ring, and a pit is provided in the middle position of the bottom of the lower convex structure, an annular protrusion is formed on the outside of the pit, and the outer ring of the annular protrusion forms a pressing portion for pressing the valve seat.

[0010] The guide sleeve is installed in the pit.

[0011] The outside of the annular protrusion and the outside of the valve core are both covered with springs.

[0012] A small hole is opened on one side of the pump head body, and a steel ball is installed in the small hole and locked with a screw.

[0013] The valve core is in a convex shape.

[0014] The length of the liquid suction plug is greater than the length of the liquid discharge plug in the liquid discharge assembly.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model has a compact and reasonable structure and is easy to operate. By redesigning the structure of the pressure plug, the pressure plug can directly abut against the valve seat, ensuring the stability of the valve seat, while also effectively preventing the possibility of movement, greatly improving the reliability of the entire pump head assembly and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of the entire pump head assembly of the utility model installed on the emulsion pump.

[0018] Figure 2 This is a schematic structural diagram of the pump head assembly of the utility model.

[0019] Figure 3 for Figure 2 Full cross-sectional view along section AA.

[0020] Figure 4 It is a structural diagram of the hydraulic pressure plug of the utility model.

[0021] Including: 1. Emulsion pump; 2. Pump head assembly;

[0022] 201. Pump head body; 202. Discharge assembly; 203. Discharge hole; 204. Suction hole; 205. Suction plug; 206. O-ring; 207. Guide sleeve; 208. Spring; 209. Steel ball; 210. Screw; 211. Valve core; 212. Valve seat; 213. Horizontal hole;

[0023] 20501. Bolt hole; 20502. Upper protruding structure; 20503. Straight rod section; 20504. Lower protruding structure; 20505. Sealing ring mounting groove; 20506. Concave pit; 20507. Annular protrusion; 20508. Holding portion. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0025] like Figures 1-4 As shown, the pump head assembly for the emulsion pump for preventing movement of this embodiment includes a pump head body 201. The pump head body 201 has two parallel holes spaced apart in the vertical direction, namely a discharge hole 203 and a suction hole 204. The discharge hole 203 is installed with a discharge assembly 202, and the suction hole 204 is installed with a suction assembly. The discharge assembly 202 and the suction assembly have the same structure. A transverse hole 213 is opened at one end below the pump head body 201, and the transverse hole 213 is connected to the discharge hole 203 and the suction hole 204.

[0026] The structure of the liquid suction component is as follows: it includes a valve seat 212 connected to the pump head body 201, a liquid suction plug 205 is installed in the liquid suction hole 204 through an O-ring 206, a valve core 211 is installed at the bottom of the liquid suction plug 205 through fasteners, a guide sleeve 207 is sleeved on the outside of the valve core 211, the outer wall surface of the guide sleeve 207 cooperates with the liquid suction plug 205, a spring 208 is also sleeved on the outside of the valve core 211, the bottom of the valve core 211 is located on the top surface of the valve seat 212, and at the same time, the bottom of the liquid suction plug 205 presses the valve seat 212.

[0027] The structure of the liquid suction plug 205 is as follows: it includes a straight rod section 20503, the top surface of the straight rod section 20503 is provided with an upper convex structure 20502, the bottom of the straight rod section 20503 is provided with a lower convex structure 20504, the outer surfaces of the upper convex structure 20502 and the lower convex structure 20504 match the inner wall surface of the liquid suction hole 204, a bolt hole 20501 is provided in the middle position of the upper convex structure 20502, the outer wall surface of the lower convex structure 20504 is provided with a sealing ring installation groove 20505 for installing an O-ring 206, a pit 20506 is provided in the middle position of the bottom of the lower convex structure 20504, an annular protrusion 20507 is formed on the outside of the pit 20506, and the outer ring of the annular protrusion 20507 is formed with a pressing portion 20508 for pressing the valve seat 212.

[0028] The guide sleeve 207 is installed in the pit 20506.

[0029] The outside of the annular protrusion 20507 and the outside of the valve core 211 are both covered with a spring 208.

[0030] A small hole is opened on one side of the pump head body 201 , and a steel ball 209 is installed in the hole and locked with a screw 210 .

[0031] The valve core 211 is in a convex shape.

[0032] The length of the suction plug 205 is greater than the length of the discharge plug in the discharge assembly 202 .

[0033] like Figure 1 As shown, the pump head assembly 2 of the present invention is installed in the emulsion pump 1 , and the plunger of the emulsion pump 1 cooperates with the transverse hole 213 .

[0034] In actual work process:

[0035] When the emulsion pump 1 is sucking liquid (the plunger in the transverse hole 213 moves backward), the suction component is opened, the discharge component 202 is closed, and the liquid enters the plunger cavity. When the emulsion pump 1 is discharging liquid (the plunger in the transverse hole 213 moves forward), the suction component is closed, the discharge component 202 is opened, and the liquid enters the high-pressure cavity. The switching is smooth.

[0036] The utility model adjusts the structure of the pressure plug, so that the working reliability of the entire pump head assembly 2 is greatly improved. The pressure plug can directly contact the valve seat 212 and fix the valve seat 212, avoiding the possibility of its up and down movement.

[0037] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the scope of protection of the utility model.

Claims

1. A pump head assembly for an emulsion pump that prevents movement, characterized in that: The pump head body (201) comprises a pump head body (201), wherein the pump head body (201) is provided with two parallel holes spaced apart in a vertical direction, namely a liquid discharge hole (203) and a liquid suction hole (204); a liquid discharge component (202) is installed in the liquid discharge hole (203), and a liquid suction component is installed in the liquid suction hole (204); the liquid discharge component (202) and the liquid suction component have the same structure; a transverse hole (213) is provided at one end below the pump head body (201), and the transverse hole (213) is communicated with the liquid discharge hole (203) and the liquid suction hole (204); The structure of the liquid suction component is as follows: it includes a valve seat (212) connected to the pump head body (201), a liquid suction plug (205) is installed in the liquid suction hole (204) through an O-ring (206), a valve core (211) is installed at the bottom of the liquid suction plug (205) through a fastener, a guide sleeve (207) is sleeved on the outside of the valve core (211), the outer wall surface of the guide sleeve (207) cooperates with the liquid suction plug (205), a spring (208) is further sleeved on the outside of the valve core (211), the bottom of the valve core (211) is located on the top surface of the valve seat (212), and at the same time, the bottom of the liquid suction plug (205) presses the valve seat (212).

2. The pump head assembly for an emulsion pump that prevents movement according to claim 1, characterized in that: The structure of the liquid suction plug (205) is as follows: it includes a straight rod section (20503), the top surface of the straight rod section (20503) is provided with an upper convex structure (20502), the bottom of the straight rod section (20503) is provided with a lower convex structure (20504), the outer surfaces of the upper convex structure (20502) and the lower convex structure (20504) match the inner wall surface of the liquid suction hole (204), and the middle position of the upper convex structure (20502) is provided with a There is a bolt hole (20501), and the outer wall surface of the lower convex structure (20504) is provided with a sealing ring installation groove (20505) for installing an O-ring (206). A pit (20506) is provided in the middle position of the bottom of the lower convex structure (20504), and an annular protrusion (20507) is formed on the outside of the pit (20506). The outer ring of the annular protrusion (20507) is formed with a holding portion (20508) that presses the valve seat (212).

3. The pump head assembly for an emulsion pump that prevents movement according to claim 2, characterized in that: The recess (20506) is provided with a guide sleeve (207).

4. The pump head assembly for an emulsion pump that prevents movement according to claim 2, characterized in that: The outside of the annular protrusion (20507) and the outside of the valve core (211) are both covered with a spring (208).

5. The pump head assembly for an emulsion pump that prevents movement according to claim 1, characterized in that: A small hole is opened on one side of the pump head body (201), and a steel ball (209) is installed in the small hole and locked with a screw (210).

6. The pump head assembly for an emulsion pump that prevents movement according to claim 1, characterized in that: The valve core (211) is in a "convex" shape.

7. The pump head assembly for an emulsion pump that prevents movement according to claim 1, characterized in that: The length of the liquid suction plug (205) is greater than the length of the liquid discharge plug in the liquid discharge assembly (202).

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