Split type screw pump

Abstract

A split screw pump, comprising an inlet cavity, a stator connected with the inlet cavity, an outlet short circuit connected with the stator, and a rotor rotatably connected in the stator, further comprising an outer fixing sleeve, an inner folding sleeve and a locking sleeve; one end of the outer fixing sleeve is detachably connected with the inlet cavity, and the other end is detachably connected with the outlet short circuit; the inner side of the end of the outer fixing sleeve connected with the outlet short circuit is connected with a threaded connecting seat; the locking sleeve is threadedly connected with the threaded connecting seat; the stator is located in the outer fixing sleeve, and is sealingly connected between the locking sleeve and the inlet cavity; one end of the inner folding sleeve is detachably connected with the outer fixing sleeve, and the other end is provided with a first flange plate; the first flange plate is detachably connected on the outer end surface of the outlet short circuit; the outer end of the locking sleeve is inserted into the inner folding sleeve. The present application has better sealing performance, and when connecting external pipelines, the first flange plate or the fifth flange plate can be used for connection, and the connection is diversified.

Description

Technical Field

[0001] This invention relates to the field of pump technology, and specifically to a split-type screw pump. Background Technology

[0002] A screw pump is a positive displacement rotor pump that relies on the rotation of a screw to form a sealed cavity to transport media. It has the core advantages of stable flow, strong self-priming ability, and adaptability to complex working conditions, and is a commonly used equipment in the field of industrial fluid transportation.

[0003] Existing screw pumps generally consist of an inlet chamber, a stator connected to the inlet chamber, an outlet short circuit connected to the stator, and a rotor rotatably connected within the stator. In operation, the outlet short circuit connects to an external pipeline. Its specific disadvantages are as follows:

[0004] 1. Existing outlet short-circuit connections for external pipelines are generally flange connections, and the position of the outlet short-circuit connection cannot be adjusted, resulting in relatively poor applicability.

[0005] 2. The flow channel of the existing screw pump consists only of the inlet chamber, the stator, and the inner cavity of the outlet short circuit. When the seal between the inlet chamber and the stator fails or the seal between the stator and the outlet short circuit fails, leakage will occur directly, and its sealing performance is relatively poor. Summary of the Invention

[0006] The present invention provides a split-type screw pump to solve the above-mentioned technical problems. This screw pump has better sealing performance and can be connected to external pipelines by a first flange or a fifth flange, allowing for various connection methods.

[0007] To solve the above-mentioned technical problems, the present invention provides a technical solution for a split-type screw pump as follows:

[0008] The device includes an inlet chamber, a stator connected to the inlet chamber, an outlet short circuit, and a rotor rotatably connected within the stator. It also includes an outer fixed sleeve, an inner folding sleeve, and a locking sleeve. One end of the outer fixed sleeve is detachably connected to the inlet chamber, and the other end is detachably connected to the outlet short circuit. A threaded connection seat is connected to the inner side of the end of the outer fixed sleeve connected to the outlet short circuit. The locking sleeve is threadedly connected to the threaded connection seat. The stator is located within the outer fixed sleeve and is sealed between the locking sleeve and the inlet chamber. One end of the inner folding sleeve is detachably connected to the outer fixed sleeve, and the other end is provided with a first flange. The first flange is detachably connected to the outer end face of the outlet short circuit. The outer end of the locking sleeve is inserted into the inner folding sleeve.

[0009] One end of the external fixed sleeve is connected to a second flange, and the other end is connected to a third flange; the second flange is connected to the inlet body by bolts; the third flange is connected to the outlet by bolts.

[0010] A first sealing ring is connected between the second flange and the inlet body; a second sealing ring is connected between the third flange and the outlet short circuit.

[0011] A support assembly is installed on the outside of the outer fixing sleeve; the support assembly includes a sleeve frame, a base frame, and two legs; each of the two legs is connected to a threaded connecting rod; the sleeve frame is fitted onto the outer fixing sleeve and is connected to the base frame by bolts; the outer fixing sleeve is located between the sleeve frame and the base frame; support seats corresponding to the two legs are respectively connected below the sleeve frame; the support seats are threadedly connected to the threaded connecting rods above their corresponding legs.

[0012] The outer fixing sleeve is connected to a plug; the sleeve frame is provided with a corresponding insertion hole; the plug is inserted into the corresponding insertion hole.

[0013] The stator is connected to the inlet cavity body by a plug sleeve; the plug sleeve is inserted into the inlet cavity body, and a third sealing ring is connected between the plug sleeve and the inlet cavity body; a fourth sealing ring is connected between the locking sleeve and the stator.

[0014] The outlet short circuit is connected to a fourth flange at one end and a fifth flange at the other end; the fourth flange and the third flange are connected by bolts.

[0015] One end of the inner folding sleeve is connected to the outer fixed sleeve by bolts; the first flange is connected to the outer end face of the fifth flange by bolts.

[0016] A fifth sealing ring connects the inner folding sleeve and the outer fixed sleeve, and a sixth sealing ring connects the first flange and the fifth flange.

[0017] The outer end of the locking sleeve is connected to a rotating head in the shape of a regular hexagon.

[0018] The technical effects that this invention can achieve are:

[0019] 1. When the external pipe is connected to the fifth flange, the present invention has two sealing structures. The first sealing structure is composed of the outer fixed sleeve and the outlet short connection. The second sealing ring is composed of the stator, the locking sleeve and the inner folding sleeve. Leakage will only occur when both sealing structures fail, and its sealing performance is stronger.

[0020] 2. Regarding the connection of the external pipe, the external pipe can be connected to the fifth flange of the outlet short connection or to the first flange of the inner folding sleeve. Both connection methods can be used. When the external pipe is connected to the first flange of the inner folding sleeve, the first flange needs to be removed from the fifth flange first. At this time, due to the presence of the inner folding sleeve, the first flange can change its installation position at will, making it more versatile.

[0021] 3. The external fixing sleeve of the present invention has a support component designed so that its height can be adjusted by rotating the support legs. Attached Figure Description

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is a schematic diagram of the structure of a split-type screw pump according to the present invention;

[0024] Figure 2 yes Figure 1 Enlarged view of part A;

[0025] Figure 3 This is a partial cross-sectional view of a split-type screw pump according to the present invention;

[0026] Figure 4 yes Figure 3 Enlarged view of part B;

[0027] Figure 5 yes Figure 4 Enlarged view of part C;

[0028] Figure 6 This is a cross-sectional view of a split-type screw pump according to the present invention;

[0029] Figure 7 This is a schematic diagram of the locking sleeve. Detailed Implementation

[0030] The invention will now be described in further detail with reference to the accompanying drawings.

[0031] See Figures 1 to 7 .

[0032] A split-type screw pump includes an inlet chamber 1, a stator 2 connected to the inlet chamber 1, an outlet short-connector 3, and a rotor 4 rotatably connected within the stator 2. It also includes an outer fixing sleeve 5, an inner folding sleeve 6, and a locking sleeve 7. One end of the outer fixing sleeve 5 is detachably connected to the inlet chamber 1, and the other end is detachably connected to the outlet short-connector 3. Specifically, one end of the outer fixing sleeve 5 is connected to a second flange 11, and the other end is connected to a third flange 12. The second flange 11 is bolted to the inlet chamber 1, and the third flange 12 is bolted to the outlet short-connector 3. Preferably, a first sealing ring 13 is connected between the second flange 11 and the inlet chamber 1, and a second sealing ring 14 is connected between the third flange 12 and the outlet short-connector 3. The invention ensures a seal between the second flange 11 and the inlet chamber 1 through the first sealing ring 13, and a seal between the third flange 12 and the outlet short-connector 3 through the second sealing ring 14.

[0033] The outer fixed sleeve 5 has a threaded connecting seat 8 connected to the inner side of its connection end with the outlet short connector 3, and the locking sleeve 7 is threadedly connected to the threaded connecting seat 8; the stator 2 is located inside the outer fixed sleeve 5, and the stator 2 is sealed between the locking sleeve 7 and the inlet cavity 1; specifically, the connection end between the stator 2 and the inlet cavity 1 is connected to a plug sleeve 41, the plug sleeve 41 is plugged into the inlet cavity 1, and a third sealing ring 42 is connected between the plug sleeve 41 and the inlet cavity 1, and a fourth sealing ring 43 is connected between the locking sleeve 7 and the stator 2; preferably, the outer end of the locking sleeve 7 is connected to a hexagonal rotating head 71, and the present invention rotates the locking sleeve 7 by rotating the rotating head 71, so that the locking sleeve 7 and the stator 2 are tightly attached, and the fourth sealing ring 43 ensures the sealing between the locking sleeve 7 and the stator 2, while the plug sleeve 41 and the inlet cavity 1 are sealed by the third sealing ring 42.

[0034] One end of the inner folding sleeve 6 is detachably connected to the outer fixed sleeve 5, and the other end is provided with a first flange 9. The first flange 9 is detachably connected to the outer end face of the outlet short connector 3, and the outer end of the locking sleeve 7 is inserted into the inner folding sleeve 6. Specifically, one end of the outlet short connector 3 is connected to a fourth flange 61, and the other end is connected to a fifth flange 62. The fourth flange 61 and the third flange 12 are connected by bolts. One end of the inner folding sleeve 6 is connected to the outer fixed sleeve 5 by bolts, and the first flange 9 is connected to the outer end face of the fifth flange 62 by bolts. A fifth sealing ring 51 is connected between the inner folding sleeve 6 and the outer fixed sleeve 5, and a sixth sealing ring 52 is connected between the first flange 9 and the fifth flange 62. The present invention ensures the sealing between the inner folding sleeve 6 and the outer fixed sleeve 5 through the fifth sealing ring 51, and ensures the sealing between the first flange 9 and the fifth flange 62 through the sixth sealing ring 52.

[0035] The present invention employs the aforementioned connection structure, which forms two sealing structures when the external pipe is connected to the fifth flange 62. The first sealing structure is formed by the outer fixing sleeve 5 and the outlet short connection 3, and the second sealing structure is composed of the stator 2, the locking sleeve 7, and the inner folding sleeve 6. Leakage will only occur when both sealing structures fail, resulting in stronger sealing performance compared to existing technologies. Furthermore, the first flange 9 is fixed to the fifth flange 62 with bolts, and the external pipe can also be installed on the first flange 9. Since the first flange 9 is connected to the inner folding sleeve 6, the position of the fifth flange 62 can be changed arbitrarily after the first flange 9 is removed from the fifth flange 62, making it more convenient to connect the external pipe.

[0036] The present invention has a support assembly installed on the outside of the outer fixing sleeve 5. The support assembly includes a sleeve frame 21, a base frame 22, and two support legs 23. Each of the two support legs 23 is connected to a threaded connecting rod 24. The sleeve frame 21 is fitted onto the outer fixing sleeve 5 and is connected to the base frame 22 by bolts. The outer fixing sleeve 5 is located between the sleeve frame 21 and the base frame 22. Support seats 25 corresponding to the two support legs 23 are respectively connected below the sleeve frame 21. The support seats 25 are threadedly connected to the threaded connecting rod 24 above the corresponding support leg 23. Preferably, a plug 31 is connected above the outer fixing sleeve 5. The sleeve frame 21 has a plug hole corresponding to the plug 31. The plug 31 is inserted into the plug hole corresponding to itself.

[0037] The support component of the present invention is fixed to the outer fixing sleeve 5 by the sleeve 21 and the base frame 22, and is limited by the insert post 31; the height of the support component itself and the outer fixing sleeve 5 can be adjusted by rotating the support leg 23, which makes it more versatile.

Claims

1. A split-type screw pump, comprising an inlet chamber (1), a stator (2) connected to the inlet chamber (1), an outlet short circuit (3), and a rotor (4) rotatably connected within the stator (2), characterized in that: It also includes an outer fixing sleeve (5), an inner folding sleeve (6), and a locking sleeve (7); one end of the outer fixing sleeve (5) is detachably connected to the inlet cavity body (1), and the other end is detachably connected to the outlet short connector (3); the inner side of the connection end of the outer fixing sleeve (5) with the outlet short connector (3) is connected to a threaded connecting seat (8); the locking sleeve (7) is threadedly connected to the threaded connecting seat (8); the stator (2) is located inside the outer fixing sleeve (5), and the stator (2) is sealed between the locking sleeve (7) and the inlet cavity body (1); one end of the inner folding sleeve (6) is detachably connected to the outer fixing sleeve (5), and the other end is provided with a first flange (9); the first flange (9) is detachably connected to the outer end face of the outlet short connector (3); the outer end of the locking sleeve (7) is inserted into the inner folding sleeve (6).

2. A split-type screw pump according to claim 1, characterized in that: The outer fixing sleeve (5) is connected to a second flange (11) at one end and a third flange (12) at the other end; the second flange (11) is connected to the inlet body (1) by bolts; the third flange (12) is connected to the outlet short circuit (3) by bolts.

3. A split-type screw pump according to claim 2, characterized in that: A first sealing ring (13) is connected between the second flange (11) and the inlet body (1); a second sealing ring (14) is connected between the third flange (12) and the outlet short circuit (3).

4. A split-type screw pump according to claim 1, characterized in that: A support assembly is installed on the outside of the outer fixing sleeve (5); the support assembly includes a sleeve frame (21), a base frame (22) and two legs (23); each of the two legs (23) is connected to a threaded connecting rod (24); the sleeve frame (21) is fitted onto the outer fixing sleeve (5) and is connected to the base frame (22) by bolts; the outer fixing sleeve (5) is located between the sleeve frame (21) and the base frame (22); a support seat (25) corresponding to the two legs (23) is connected to the lower part of the sleeve frame (21); the support seat (25) is threadedly connected to the threaded connecting rod (24) above its corresponding leg (23).

5. A split-type screw pump according to claim 4, characterized in that: The outer fixing sleeve (5) is connected to a plug (31); the sleeve frame (21) has a corresponding insertion hole for the plug (31); the plug (31) is inserted into the corresponding insertion hole.

6. A split-type screw pump according to claim 1, characterized in that: The stator (2) is connected to the inlet cavity body (1) by a plug sleeve (41); the plug sleeve (41) is inserted into the inlet cavity body (1), and a third sealing ring (42) is connected between the plug sleeve (41) and the inlet cavity body (1); a fourth sealing ring (43) is connected between the locking sleeve (7) and the stator (2).

7. A split-type screw pump according to claim 2 or 3, characterized in that: The outlet short connector (3) is connected to a fourth flange (61) at one end and a fifth flange (62) at the other end; the fourth flange (61) and the third flange (12) are connected by bolts.

8. A split-type screw pump according to claim 7, characterized in that: One end of the inner folding sleeve (6) is connected to the outer fixed sleeve (5) by bolts; the first flange (9) is connected to the outer end face of the fifth flange (62) by bolts.

9. A split-type screw pump according to claim 8, characterized in that: A fifth sealing ring (51) is connected between the inner folding sleeve (6) and the outer fixed sleeve (5), and a sixth sealing ring (52) is connected between the first flange (9) and the fifth flange (62).

10. A split-type screw pump according to claim 1, characterized in that: The locking sleeve (7) has a hexagonal rotating head (71) connected to its outer end.

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