Sand treatment decompression cone

Abstract

The utility model relates to a sand treatment pressure relief cone, which belongs to the field of pressure relief cones and comprises a pressure relief cone main body, the pressure relief cone main body is vertically arranged, a cleaning mechanism is arranged on the pressure relief cone main body, the cleaning mechanism comprises a scraper, the scraper is attached to the conical surface of the pressure relief cone main body, and the scraper is rotatably connected with the pressure relief cone main body. The rotating center of the scraper coincides with the vertical center line of the pressure relief cone body, a connecting piece is arranged on the scraper, and the scraper is connected with a sand conveying disc in a sand silo through the connecting piece. Cleaning is carried out in a scraper rotating mode, the cleaning reliability is higher, the cleaning effect is better, in addition, when a gap is generated between the scraper and the conical surface of the pressure relief cone body due to abrasion, the scraper is made to be attached to the conical surface of the pressure relief cone body all the time through descending of the scraper, and the reliability of the scraper for cleaning molding sand adhering to the pressure relief cone body is improved.

Description

Technical Field

[0001] The utility model relates to a sand processing pressure reducing cone, belonging to the field of pressure reducing cones. Background Art

[0002] The turbine casing is usually manufactured by casting. During the casting, the heated liquid raw material needs to be poured into the mold, and the mold is removed after cooling and forming. The mold is usually made of molding sand. During the processing of molding sand, various raw materials of molding sand need to be mixed in a sand mixer first, and then poured into the sand bin for standby. In order to reduce the load of the downstream equipment of the sand bin and prevent the molding sand from compacting, a pressure relief cone is generally set in the sand bin. During the production process, the molding sand will stick to the pressure relief cone, which will block the outlet over time and need to be cleaned regularly.

[0003] The utility model patent with announcement number CN219770712U discloses a vibrating decompression cone, including a conical cap, a vibrator fixed inside the conical cap, and a plurality of legs connected to the conical cap through a buffer block, at least one of the legs has a through hole that runs through along the length direction, and the air pipe connected to the vibrator is connected to the external air source through the through hole. The vibrating decompression cone described in the utility model is based on the original decompression cone structure, in which a vibrator is installed inside the conical cap, and legs are added at the same time. The legs are connected to the conical cap through a buffer block to avoid vibration affecting the weighing accuracy of the silo. The air pipe is routed inside the legs, and the sealing is guaranteed. However, the adhesion between the molding sand and the decompression cone is relatively strong. In the prior art, it is difficult to remove the molding sand stuck to the decompression cone by vibration, which affects the cleaning effect.

[0004] Therefore, there is a need for a sand treatment pressure relief cone to improve the cleaning effect. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, a sand treatment pressure reducing cone with improved cleaning effect is provided.

[0006] The technical solution adopted by the utility model to solve the above-mentioned problem is: a sand processing decompression cone, comprising a decompression cone main body, the decompression cone main body is arranged vertically, a cleaning mechanism is provided on the decompression cone main body, the cleaning mechanism comprises a scraper, the scraper is fitted with the conical surface of the decompression cone main body, the scraper is rotatably connected to the decompression cone main body, the rotation center of the scraper coincides with the vertical center line of the decompression cone main body, the scraper is provided with a connecting piece, and is connected to the sand feeding disc in the sand bin through the connecting piece.

[0007] Preferably, a plurality of scrapers are provided, and the plurality of scrapers are distributed circumferentially with the pressure reducing cone body as the center.

[0008] Preferably, a socket is provided on the top of the pressure reducing cone, the socket is coaxially arranged with the pressure reducing cone body, a rotating shaft is coaxially inserted into the socket, the depth of the socket is greater than the depth of the rotating shaft inserted into the socket, the scraper is fixed on the rotating shaft, and the scraper and the sand feeding disc are arranged at intervals above and below.

[0009] Preferably, the insertion hole is a blind hole, and a gap is provided between the rotating shaft and the inner bottom of the insertion hole.

[0010] Preferably, the cleaning mechanism further comprises an auxiliary cone, the cone surface of the auxiliary cone is arranged upward, and the auxiliary cone is fixedly arranged on the top of the scraper.

[0011] Preferably, the connecting member comprises a transmission rod, the transmission rod vertically passes through the scraper, and the bottom end of the transmission rod is fixedly arranged on the sand feeding disc.

[0012] Preferably, the scraper and the sand feeding disc are arranged with an interval up and down, an elastic member is provided on the transmission rod, the transmission rod is connected to the scraper through the elastic member, and the scraper is subjected to a downward force through the elastic member.

[0013] Preferably, the elastic member is a spring and a connecting block, the connecting block is arranged on the transmission rod, the spring is sleeved on the transmission rod, the spring is located between the connecting block and the scraper, the two ends of the spring are respectively connected to the connecting block and the scraper, and the spring is in a deformed state.

[0014] Preferably, the connecting block is a nut, and the nut is threadedly connected to the transmission rod.

[0015] Preferably, the scraper includes an inclined section and a horizontal section, the inclined section fits with the conical surface of the pressure reducing cone body, and the horizontal section is located at the bottom end of the inclined section and on a side of the inclined section away from the pressure reducing cone body.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The utility model discloses a sand processing decompression cone, which adopts a scraper rotating mode to perform cleaning, has higher cleaning reliability and better cleaning effect, and when a gap is generated between the scraper and the conical surface of the decompression cone body due to wear, the scraper is lowered so that the scraper is always in contact with the conical surface of the decompression cone body, thereby improving the reliability of the scraper in cleaning the molding sand adhered to the decompression cone body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of a sand processing pressure relief cone in working state according to the utility model;

[0019] Figure 2 for Figure 1 The main view;

[0020] Figure 3 for Figure 1 Left view of;

[0021] Figure 4 for Figure 1 A top view of

[0022] Figure 5 for Figure 2 A magnified view of part A;

[0023] Figure 6 for Figure 3 BB direction cross-sectional view;

[0024] Figure 7 A three-dimensional diagram of a scraper;

[0025] Figure 8 It is a three-dimensional diagram of the main body of the pressure relief cone.

[0026] in:

[0027] Decompression cone body 1, cleaning mechanism 2, sand feeding disc 3;

[0028] Scraper 21, socket 22, rotating shaft 23, auxiliary cone 24, transmission rod 25, spring 26, connecting block 27;

[0029] Inclined section 211 and horizontal section 212 . DETAILED DESCRIPTION

[0030] like Figure 1-8 As shown, a sand processing decompression cone in this embodiment includes a decompression cone body 1, the decompression cone body 1 is arranged vertically, and a cleaning mechanism 2 is provided on the decompression cone body 1, and the cleaning mechanism 2 is used to remove the molding sand adhered to the decompression cone body 1;

[0031] The cleaning mechanism 2 includes a scraper 21, which is fitted with the conical surface of the decompression cone body 1, and the scraper 21 is rotatably connected to the decompression cone body 1, and the rotation center of the scraper 21 coincides with the vertical center line of the decompression cone body 1. A connecting piece is provided on the scraper 21, which is connected to the sand feeding disc 3 in the sand bin through the connecting piece. During operation, the decompression cone body 1 is fixedly connected to the sand bin, and the sand feeding disc 3 is connected to the driving system, and the sand feeding disc 3 is rotated around the vertical center line of the decompression cone body 1 in the sand bin through the driving system. The rotation of the sand feeding disc 3 drives the scraper 21 to rotate synchronously on the conical surface of the decompression cone body 1 through the connecting piece, so that the scraper 21 scrapes off the molding sand adhered to the decompression cone body 1, so as to clean the molding sand adhered to the decompression cone body 1. Compared with the prior art that uses vibration to clean, the scraper 21 is used to clean by rotating, which has higher cleaning reliability and better cleaning effect.

[0032] There are two scrapers 21, and the two scrapers 21 are evenly distributed around the decompression cone body 1;

[0033] A socket 22 is provided at the top of the decompression cone, and the socket 22 is coaxially arranged with the decompression cone body 1. A rotating shaft 23 is coaxially inserted into the socket 22. The diameter of the rotating shaft 23 is equal to the aperture of the socket 22. The bottom end of the rotating shaft 23 is provided with a chamfer. The depth of the socket 22 is greater than the depth of the rotating shaft 23 inserted into the socket 22. The scraper 21 is fixedly arranged on the rotating shaft 23. The scraper 21 and the sand feeding disc 3 are arranged at intervals up and down. During the rotation of the scraper 21, the rotating shaft 23 is driven to rotate synchronously in the socket 22. When the scraper 21 has a gap with the conical surface of the decompression cone body 1 due to wear, the scraper 21 moves downward due to its own gravity, and drives the rotating shaft 23 to move downward in the socket 22, so that the scraper 21 is always in contact with the conical surface of the decompression cone body 1, thereby improving the reliability of the scraper 21 in cleaning the sticking molding sand on the decompression cone body 1;

[0034] The insertion hole 22 is a blind hole, and a gap is provided between the rotating shaft 23 and the bottom of the insertion hole 22;

[0035] The cleaning mechanism 2 further includes an auxiliary cone 24, which is coaxially arranged with the pressure reducing cone body 1, with the cone surface of the auxiliary cone 24 facing upward, and the auxiliary cone 24 is fixedly arranged on the top of the scraper 21, so that the molding sand can slide down through the auxiliary cone 24, thereby preventing the molding sand from remaining on the top of the scraper 21;

[0036] The connecting member includes a transmission rod 25, the transmission rod 25 vertically passes through the scraper 21, and the bottom end of the transmission rod 25 is fixedly arranged on the sand feeding disc 3. During the rotation of the sand feeding disc 3, the scraper 21 is driven to rotate synchronously through the transmission rod 25;

[0037] There are two transmission rods 25, and the two transmission rods 25 are arranged side by side;

[0038] The transmission rod 25 is provided with an elastic member, and the transmission rod 25 is connected to the scraper 21 through the elastic member, and the scraper 21 is subjected to a downward force through the elastic member. When a gap is generated between the scraper 21 and the conical surface of the decompression cone body 1 due to wear, the force generated by the elastic member facilitates the scraper 21 to move downward, so that the scraper 21 is always in contact with the conical surface of the decompression cone body 1;

[0039] The elastic member is a spring 26 and a connecting block 27. The connecting block 27 is arranged on the transmission rod 25. The spring 26 is sleeved on the transmission rod 25. The spring 26 is located between the connecting block 27 and the scraper 21. The two ends of the spring 26 are respectively connected to the connecting block 27 and the scraper 21. The spring 26 is in a deformed state.

[0040] Here, when the connection block 27 is located above the scraper 21, the spring 26 is in a compressed state, and when the connection block 27 is located below the scraper 21, the spring 26 is in a stretched state;

[0041] When a gap is formed between the scraper 21 and the conical surface of the decompression cone body 1 due to wear, the scraper 21 is pushed downward by the elastic action of the spring 26;

[0042] The connecting block 27 is a nut, which is threadedly connected to the transmission rod 25. When the nut is rotated, the deformation of the spring 26 is adjusted, thereby adjusting the elastic force of the spring 26 pushing the scraper 21;

[0043] The scraper 21 includes an inclined section 211 and a horizontal section 212, wherein the inclined section 211 is fitted with the conical surface of the decompression cone body 1, and the horizontal section 212 is located at the bottom end of the inclined section 211 and at a side of the inclined section 211 away from the decompression cone body 1, wherein the inclined section 211 is fixedly connected to the rotating shaft 23, and the horizontal section 212 is connected to the transmission rod 25. During the rotation of the scraper 21, the molding sand adhered to the decompression cone body 1 is cleaned by the inclined section 211. In fact, the yarn feeding disc 3 is annular, and the rotation of the horizontal section 212 facilitates the molding sand to be discharged from the annular hole on the sand feeding disc 3, thereby realizing the discharge of the sand bin;

[0044] To sum up, the cleaning is performed by rotating the scraper 21, which has higher cleaning reliability and better cleaning effect. Moreover, when a gap is generated between the scraper 21 and the conical surface of the decompression cone body 1 due to wear, the scraper 21 is lowered so that the scraper 21 is always in contact with the conical surface of the decompression cone body 1, thereby improving the reliability of the scraper 21 in cleaning the sticking molding sand on the decompression cone body 1.

[0045] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A sand treatment decompression cone, comprising a decompression cone body (1), wherein the decompression cone body (1) is arranged vertically, and a cleaning mechanism (2) is provided on the decompression cone body (1), characterized in that: The cleaning mechanism (2) comprises a scraper (21), the scraper (21) is fitted with the conical surface of the decompression cone body (1), the scraper (21) is rotatably connected to the decompression cone body (1), the rotation center of the scraper (21) coincides with the vertical center line of the decompression cone body (1), and the scraper (21) is provided with a connecting piece, which is connected to the sand feeding disc (3) in the sand bin through the connecting piece.

2. A sand processing pressure relief cone according to claim 1, characterized in that: A plurality of scrapers (21) are provided, and the plurality of scrapers (21) are distributed circumferentially with the pressure reducing cone body (1) as the center.

3. A sand processing decompression cone according to claim 1, characterized in that: A plug hole (22) is provided at the top of the pressure reducing cone, the plug hole (22) is coaxially arranged with the pressure reducing cone body (1), a rotating shaft (23) is coaxially inserted into the plug hole (22), the depth of the plug hole (22) is greater than the depth of the rotating shaft (23) inserted into the plug hole (22), the scraper (21) is fixedly arranged on the rotating shaft (23), and the scraper (21) and the sand feeding disc (3) are arranged at intervals up and down.

4. A sand processing pressure relief cone according to claim 3, characterized in that: The insertion hole (22) is a blind hole, and a gap is provided between the rotating shaft (23) and the inner bottom of the insertion hole (22).

5. A sand processing pressure relief cone according to claim 1, characterized in that: The cleaning mechanism (2) further comprises an auxiliary cone (24), the cone surface of the auxiliary cone (24) being arranged upwards, and the auxiliary cone (24) being fixedly arranged on the top of the scraper (21).

6. A sand processing pressure relief cone according to claim 1, characterized in that: The connecting member comprises a transmission rod (25), the transmission rod (25) vertically passes through the scraper (21), and the bottom end of the transmission rod (25) is fixedly arranged on the sand feeding disc (3).

7. A sand processing pressure relief cone according to claim 6, characterized in that: The scraper (21) and the sand feeding disc (3) are arranged at intervals up and down, and an elastic member is arranged on the transmission rod (25). The transmission rod (25) is connected to the scraper (21) through the elastic member, and the scraper (21) is subjected to a downward force through the elastic member.

8. A sand processing pressure relief cone according to claim 7, characterized in that: The elastic member comprises a spring (26) and a connecting block (27); the connecting block (27) is arranged on the transmission rod (25); the spring (26) is sleeved on the transmission rod (25); the spring (26) is located between the connecting block (27) and the scraper (21); two ends of the spring (26) are respectively connected to the connecting block (27) and the scraper (21); and the spring (26) is in a deformed state.

9. A sand processing pressure relief cone according to claim 8, characterized in that: The connection block (27) is a nut, and the nut is threadedly connected to the transmission rod (25).

10. A sand processing pressure relief cone according to claim 1, characterized in that: The scraper (21) comprises an inclined section (211) and a horizontal section (212); the inclined section (211) is in contact with the conical surface of the pressure reducing cone body (1); and the horizontal section (212) is located at the bottom end of the inclined section (211) and at a side of the inclined section (211) away from the pressure reducing cone body (1).

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