High-pressure horizontal pump

Abstract

The high-pressure horizontal pump comprises a pump body, a first bearing, a swash plate, a second bearing and a plunger, the middle of the swash plate is rotationally connected to the pump body through the first bearing, the second bearing is fixed to the swash plate and used for abutting against the plunger, the plunger is slidably connected into the pump body through a reset spring, and a one-way structure is located between a water inlet pipe and the plunger. The column body is slidably connected to the pump body, the mounting hole is formed in the column body and arranged in the length direction of the column body, the mounting pipe is fixed to the column head, a connecting hole coaxial with the mounting pipe is formed in the column head, the mounting pipe is slidably connected into the mounting hole, the supporting plate is fixed to the inner wall of the mounting hole, one end of the elastic piece is fixed to the supporting plate, and the other end of the elastic piece is fixed to the column head. And the round ball is rotationally connected to the end of the column head and used for abutting against the second bearing, a sponge block used for abutting against the end of the mounting pipe is fixedly connected to the supporting plate, and the purposes of reducing noise and reducing plunger abrasion are achieved.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a high-pressure horizontal pump. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN203067262U discloses a swash plate type plunger pump transmission system, including a cylinder body, a transmission shaft arranged inside the cylinder body, a plunger, a swash plate and a first bearing for supporting the transmission shaft. The swash plate is fixed to one end of the transmission shaft, the plunger is in contact with the swash plate, and a second bearing and a third bearing are respectively provided on both sides of the swash plate. The second bearing is close to one side of the plunger, and the third bearing is close to one side of the transmission shaft and fixed to the cylinder body.

[0003] This swash plate piston pump transmission system uses the third bearing to transfer the axial load to the cylinder body, thereby reducing the load on the transmission shaft and increasing the service life of the swash plate piston pump. However, during long-term use, the lubricity of the second bearing will decrease, causing the friction between the plunger and the second bearing to increase, resulting in greater noise and plunger wear. Utility Model Content

[0004] In view of this, the utility model aims to provide a high-pressure horizontal pump, which can reduce noise and plunger wear by intermittently squeezing lubricating oil out of the plunger.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a high-pressure horizontal pump, including a pump body, a first bearing, a swash plate, a second bearing and a plunger, the middle part of the swash plate is rotatably connected to the pump body through the first bearing, the second bearing is fixed on the swash plate and is used to contact the plunger, the plunger is slidably connected to the pump body through a return spring, the pump body is provided with a water inlet pipe and a water outlet pipe, the pump body is provided with a one-way structure, the one-way structure is located between the water inlet pipe and the plunger, the plunger includes a column, a column head, a mounting hole, a mounting pipe, a support plate, an elastic member, The ball is slidably connected to the pump body, the mounting hole is provided on the column and arranged along the length direction of the column, the mounting tube is fixed on the column head, a connecting hole coaxially arranged with the mounting tube is provided on the column head, the mounting tube is slidably connected in the mounting hole, the support plate is fixed on the inner wall of the mounting hole, one end of the elastic member is fixed on the support plate, and the other end is inserted into the connecting hole and contacts with the ball, the ball is rotatably connected to the end of the column head and is used to contact with the second bearing, and a sponge block for contacting with the end of the mounting tube is fixedly connected to the support plate.

[0006] To implement the above technical solution, lubricating oil is pre-injected into the mounting hole and absorbed by the sponge block. Water is injected into the pump body from the water inlet pipe. During the rotation of the swash plate, the second bearing and the plunger push the plunger to move, and the plunger is reset by the return spring. During this period, the outer wall of the second bearing contacts the ball and applies pressure to the ball, causing the stud to move towards the cylinder, the mounting pipe to move towards the support plate, the end of the mounting pipe to contact the sponge block, and the sponge block to deform. The lubricating oil in the sponge block is extruded and injected into the connecting hole along the mounting pipe, and then lubricates the ball, so that there is a good lubricating effect between the ball and the stud and between the ball and the second bearing, so as to achieve the purpose of reducing noise and reducing plunger wear, and greatly extending the service life. As the swash plate rotates, when the plunger is reset, the pressure on the plunger from the swash plate decreases, and the elastic force of the elastic member causes the stud to move away from the cylinder, so that the sponge block is restored and absorbs lubricating oil, thus realizing the effect of intermittently lubricating the ball, so as to greatly extend the time interval for adding lubricating oil and improve production efficiency.

[0007] As a preferred solution of the present utility model, a quick-release ring is threadedly connected to the end of the connecting hole. An arc-shaped card slot is provided on the inner wall of the quick-release ring, and the ball is rotatably connected in the arc-shaped card slot. A limiting structure is provided between the quick-release ring and the connecting hole.

[0008] To implement the above technical solution, when the ball is damaged, the quick-release ring is screwed out of the connecting hole, and the ball can be removed from the stud. After heating the quick-release ring, the quick-release ring expands, and the ball is smoothly placed in the quick-release ring. As the quick-release ring cools and contracts, the ball is stably located in the quick-release ring. Threading the quick-release ring onto the connecting hole can achieve the installation of the ball, which is convenient and fast. Through the setting of the limiting structure, the quick-release ring is not easily removed from the connecting hole during the movement of the plunger.

[0009] As a preferred solution of the present utility model, the limiting structure includes a first sliding groove, a second sliding groove, and a T-shaped slider. The first sliding groove is provided on the outer wall of the quick-release ring and is arranged along the radial direction of the quick-release ring. The second sliding groove is provided on the inner wall of the connecting hole and is arranged along the radial direction of the connecting hole. The T-shaped slider moves along the first sliding groove and is partially embedded in the second sliding groove.

[0010] To implement the above technical solution, the T-shaped slider moves along the first sliding groove and is partially embedded in the second sliding groove. By the contact of a part of the T-shaped slider with the inner wall of the first sliding groove and the contact of another part of the T-shaped slider with the inner wall of the second sliding groove, the rotation of the quick-release ring is restricted, so that the quick-release ring is not easily detached from the connecting hole.

[0011] As a preferred solution of the present utility model, a positioning block is fixedly connected to the outer wall of the installation pipe. A sealing ring is sleeved on the installation pipe. The side wall of the sealing ring abuts against the positioning block, and the outer wall of the sealing ring abuts against the inner wall of the installation hole.

[0012] By implementing the above technical solution, through the setting of the sealing ring, the sealing performance between the installation hole and the installation pipe is improved, so that the problem of a large amount of lubricating oil leakage is not likely to occur.

[0013] As a preferred solution of the present utility model, the one-way structure includes a positioning frame, a sealing plate, a connecting spring, and a locking bolt. The positioning frame is fixed on the pump body. A water inlet hole is provided on the positioning frame. The sealing plate is slidably connected to the positioning frame and is used to block the water inlet hole. The locking bolt is fixed at the end of the positioning frame and is arranged opposite to the water inlet hole. The connecting spring is located in the positioning frame, with one end abutting against the sealing plate and the other end abutting against the locking bolt.

[0014] By implementing the above technical solution, when the plunger moves away from the positioning frame, a negative pressure is generated in the pump body. The sealing plate moves along the positioning frame towards the plunger, so that water can enter the pump body along the water inlet hole and the positioning frame. When the plunger moves towards the positioning frame, the sealing plate blocks the water inlet hole under the elastic force of the connecting spring, so as to discharge the water from the water outlet pipe.

[0015] As a preferred solution of the present utility model, a limiting protrusion is fixedly connected to the locking bolt. A guiding inclined surface is provided on the outer wall of the limiting protrusion. The connecting spring is sleeved on the outer wall of the limiting protrusion.

[0016] By implementing the above technical solution, the connecting spring is not likely to be separated from the locking bolt. Through the setting of the limiting protrusion, it is convenient to embed the locking bolt into the end of the positioning frame.

[0017] As a preferred solution of the present utility model, an anti-slip protrusion is fixedly connected to the outer wall of the locking bolt. A water passing hole is provided in the middle of the locking bolt. The water passing hole penetrates into the interior of the positioning frame.

[0018] By implementing the above technical solution, water can enter the pump body from the water passing hole to increase the water intake. Moreover, the negative pressure generated by the movement of the plunger can act on the sealing plate through the water passing hole, increasing the acting force on the sealing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the external structure of the embodiment;

[0020] Figure 2 It is a schematic diagram showing the position of the key groove;

[0021] Figure 3Schematic diagram of the explosion structure of the present utility model;

[0022] Figure 4 Schematic diagram showing the positions of the water inlet pipe and the water outlet pipe;

[0023] Figure 5 Stereoscopic diagram showing the one-way structure;

[0024] Figure 6 Schematic diagram showing the position of the water inlet hole;

[0025] Figure 7 Side view of the sealing plate;

[0026] Figure 8 Schematic diagram showing the position of the sponge block;

[0027] Figure 9 Schematic diagram showing the position of the T-shaped slider.

[0028] Reference numerals: 11, pump body; 12, first bearing; 13, swash plate; 131, keyway; 14, second bearing; 15, return spring; 2, plunger; 21, cylinder body; 22, plunger head; 221, connection hole; 23, mounting hole; 24, mounting pipe; 25, support plate; 26, elastic member; 27, ball; 31, water inlet pipe; 32, water outlet pipe; 4, one-way structure; 41, positioning frame; 411, water inlet hole; 42, sealing plate; 421, arc convex part; 43, connection spring; 44, locking bolt; 441, limit projection; 442, guiding inclined surface; 45, anti-slip projection; 5, quick installation ring; 51, arc-shaped card slot; 6, limit structure; 61, first sliding groove; 62, second sliding groove; 63, T-shaped slider; 71, positioning block; 72, sealing ring; 8, water through hole; 9, sponge block. Detailed description of the specific implementation

[0029] The following further details the specific implementation of the present utility model in conjunction with the accompanying drawings, so that the technical solution of the present utility model can be more easily understood and mastered.

[0030] A high-pressure horizontal pump includes a pump body 11, a first bearing 12, a swash plate 13, a second bearing 14 and a plunger 2. A keyway 131 is provided at the end of the swash plate 13. The middle of the swash plate 13 is rotatably connected to the pump body 11 through the first bearing 12, and the second bearing 14 is fixed to the end of the swash plate 13.

[0031] The plunger 2 is slidably connected to the inside of the pump body 11 through a return spring 15. One end of the return spring 15 is connected to the pump body 11, and the other end is connected to the outer wall of the plunger 2, so that the plunger 2 can always maintain a contact connection state with the second bearing 14.

[0032] A water inlet pipe 31 and a water outlet pipe 32 are provided on the pump body 11, and a one-way structure 4 is provided on the pump body 11; the one-way structure 4 is located between the water inlet pipe 31 and the plunger 2.

[0033] The one-way structure 4 includes a positioning frame 41, a sealing plate 42, a connecting spring 43, and a locking bolt 44. The positioning frame 41 is fixed to the pump body 11, and a water inlet hole 411 is opened in the center of the positioning frame 41. The sealing plate 42 is slidably connected to the positioning frame 41 and is used to block the water inlet hole 411. In order to improve the sealing performance, an arc-shaped convex part 421 is provided on the surface of the sealing plate 42, and the surface of the arc-shaped convex part 421 abuts against the inner wall of the water inlet hole 411. The locking bolt 44 is fixed to the end of the positioning frame 41 and is arranged opposite to the water inlet hole 411.

[0034] The connecting spring 43 is located in the positioning frame 41, one end thereof abuts against the sealing plate 42, and the other end abuts against the locking bolt 44.

[0035] A limiting protrusion 441 is fixedly connected to the locking bolt 44, and the limiting protrusion 441 is located on the side of the locking bolt 44 facing the water inlet hole 411. A guiding inclined surface 442 is opened on the outer wall of the limiting protrusion 441, and the connecting spring 43 is sleeved on the outer wall of the limiting protrusion 441.

[0036] An anti-slip protrusion 45 is fixedly connected to the outer wall of the locking bolt 44. A water passing hole 8 is opened in the middle of the locking bolt 44, and the water passing hole 8 penetrates into the inside of the positioning frame 41.

[0037] The plunger 2 includes a column body 21, a column head 22, a mounting hole 23, a mounting pipe 24, a support plate 25, an elastic member 26, and a round bead 27. The column body 21 is slidably connected to the pump body 11, and the above-mentioned return spring 15 is connected to the outer wall of the column body 21. The mounting hole 23 is opened on the column body 21 and is arranged along the length direction of the column body 21, and the mounting hole 23 is coaxially arranged with the column body 21. A support plate 25 is fixedly connected to the inner wall of the mounting hole 23, and a sponge block 9 is fixedly connected to the support plate 25.

[0038] The mounting pipe 24 is fixed to the column head 22, and the mounting pipe 24 is coaxially arranged with the column head 22. A connection hole 221 coaxially arranged with the mounting pipe 24 is opened on the column head 22.

[0039] The mounting pipe 24 is slidably connected in the mounting hole 23 and is used to abut against the sponge block 9 to deform the sponge block 9 and squeeze out lubricating oil. One end of the elastic member 26 is fixed to the support plate 25, and the other end penetrates into the connection hole 221 and abuts against the round bead 27. The round bead 27 is rotatably connected to the end of the column head 22 and is used to abut against the second bearing 14.

[0040] In order to facilitate the loading and unloading of the ball 27, a quick-release ring 5 is threadedly connected to the end of the connection hole 221, and an arc-shaped groove 51 is opened on the inner wall of the quick-release ring 5. After the quick-release ring 5 is heated and expanded, the ball 27 is placed inside the quick-release ring 5. After the quick-release ring 5 is cooled and shrunk, the ball 27 can be stably rotated and connected to the arc-shaped groove 51, and it is not easy to be separated from the quick-release ring 5. A limiting structure 6 is set between the quick-release ring 5 and the connection hole 221.

[0041] The limiting structure 6 includes a first sliding groove 61, a second sliding groove 62, and a T-shaped slider 63. The first sliding groove 61 is provided on the outer wall of the quick-mounting ring 5 and is arranged along the radial direction of the quick-mounting ring 5; the second sliding groove 62 is provided on the inner wall of the connecting hole 221 and is arranged along the radial direction of the connecting hole 221. The T-shaped slider 63 moves along the first sliding groove 61 and is partially embedded in the second sliding groove 62 to limit the rotation of the quick-mounting ring 5.

[0042] A positioning block 71 is fixedly connected to the outer wall of the mounting tube 24; a sealing ring 72 is sleeved on the mounting tube 24, the side wall of the sealing ring 72 abuts against the positioning block 71, and the outer wall of the sealing ring 72 abuts against the inner wall of the mounting hole 23. The sealing ring 72 is located between the two positioning blocks 71. Lubricating oil is injected into the mounting hole 23 from the connecting hole 221 and the sponge block 9 absorbs the lubricating oil, and finally the quick-release ring 5 is installed at the end of the connecting hole 221.

[0043] The second bearing 14 pushes the column head 22 to move, and the column head 22 drives the mounting tube 24 to move, so that the mounting tube 24 squeezes the sponge block 9 and moves the column 21 along its own length direction. When the second bearing 14 moves away from the column head 22, the return spring 15 returns the column 21, and the elastic member 26 returns the column head 22.

[0044] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A high-pressure horizontal pump, comprising a pump body (11), a first bearing (12), a swash plate (13), a second bearing (14) and a plunger (2), wherein the middle portion of the swash plate (13) is rotatably connected to the pump body (11) via the first bearing (12), the second bearing (14) is fixed to the swash plate (13) and is used to contact the plunger (2), the plunger (2) is slidably connected to the pump body (11) via a return spring (15), the pump body (11) is provided with a water inlet pipe (31) and a water outlet pipe (32), the pump body (11) is provided with a one-way structure (4), the one-way structure (4) is located between the water inlet pipe (31) and the plunger (2), and is characterized in that: The plunger (2) comprises a column (21), a column head (22), a mounting hole (23), a mounting tube (24), a support plate (25), an elastic member (26), and a ball (27); the column (21) is slidably connected to the pump body (11); the mounting hole (23) is formed on the column (21) and arranged along the length direction of the column (21); the mounting tube (24) is fixed on the column head (22); and the column head (22) is provided with a connecting hole (221) coaxially arranged with the mounting tube (24). The mounting tube (24) is slidably connected to the mounting hole (23), the support plate (25) is fixed to the inner wall of the mounting hole (23), one end of the elastic member (26) is fixed to the support plate (25), and the other end is inserted into the connecting hole (221) and contacts with the ball (27), the ball (27) is rotatably connected to the end of the column head (22) and is used to contact with the second bearing (14), and a sponge block (9) is fixedly connected to the support plate (25) for contacting the end of the mounting tube (24).

2. A high pressure horizontal pump according to claim 1, characterized in that: The end of the connecting hole (221) is threadedly connected with a quick-release ring (5), an arc-shaped slot (51) is provided on the inner wall of the quick-release ring (5), the ball (27) is rotatably connected in the arc-shaped slot (51), and a limiting structure (6) is provided between the quick-release ring (5) and the connecting hole (221).

3. A high pressure horizontal pump according to claim 2, characterized in that: The limiting structure (6) comprises a first slide groove (61), a second slide groove (62), and a T-shaped slider (63); the first slide groove (61) is formed on the outer wall of the quick-release ring (5) and is arranged along the radial direction of the quick-release ring (5); the second slide groove (62) is formed on the inner wall of the connecting hole (221) and is arranged along the radial direction of the connecting hole (221); the T-shaped slider (63) moves along the first slide groove (61) and is partially embedded in the second slide groove (62).

4. A high pressure horizontal pump according to claim 3, characterized in that: A positioning block (71) is fixedly connected to the outer wall of the mounting tube (24), a sealing ring (72) is sleeved on the mounting tube (24), a side wall of the sealing ring (72) abuts against the positioning block (71), and an outer wall of the sealing ring (72) abuts against the inner wall of the mounting hole (23).

5. A high pressure horizontal pump according to claim 1, characterized in that: The one-way structure (4) comprises a positioning frame (41), a sealing plate (42), a connecting spring (43), and a locking bolt (44); the positioning frame (41) is fixed on the pump body (11); a water inlet hole (411) is provided on the positioning frame (41); the sealing plate (42) is slidably connected to the positioning frame (41) and is used to block the water inlet hole (411); the locking bolt (44) is fixed to the end of the positioning frame (41) and is arranged opposite to the water inlet hole (411); the connecting spring (43) is located on the positioning frame (41) and one end thereof contacts the sealing plate (42), and the other end contacts the locking bolt (44).

6. A high-pressure horizontal pump according to claim 5, characterized in that: The locking bolt (44) is fixedly connected to a limiting protrusion (441), an outer wall of the limiting protrusion (441) is provided with a guiding inclined surface (442), and the connecting spring (43) is sleeved on the outer wall of the limiting protrusion (441).

7. A high pressure horizontal pump according to claim 5 or 6, characterized in that: An anti-slip protrusion (45) is fixedly connected to the outer wall of the locking bolt (44), and a water hole (8) is opened in the middle of the locking bolt (44), and the water hole (8) penetrates into the interior of the positioning frame (41).

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